{"product_id":"stulz-telair-telecom-shelter-equipment-room-cooling-australia","title":"STULZ TelAir Indoor Telecom Shelter and Equipment Room Cooling Australia","description":"\u003cdiv style=\"box-sizing:border-box;max-width:960px;margin:0 auto;padding:28px 20px;font-family:Arial,Helvetica,sans-serif;font-size:17px;line-height:1.6;color:#222222;\"\u003e\n\n\u003cp style=\"font-size:15px;color:#888888;text-transform:uppercase;letter-spacing:0.5px;margin:0 0 10px 0;\"\u003eHome \/ Precision Cooling \/ STULZ \/ Shelter and Container Cooling \/ TelAir\u003c\/p\u003e\n\n\u003cdiv style=\"background-color:#fafafa;border-left:4px solid #d9590c;border-radius:6px;padding:16px 20px;margin-bottom:28px;\"\u003e\n  \u003cp style=\"margin:0;font-size:19px;\"\u003e\n    \u003cstrong\u003eThe STULZ TelAir is an indoor installed precision cooling unit for telecommunications shelters, equipment rooms and containers, delivering 4 kW to 16 kW of cooling in two cabinet sizes and four air conduction directions across Australia.\u003c\/strong\u003e\n    Because the unit is installed inside the shelter rather than on the outside wall, it is protected from weather and vandalism and it keeps externally radiated noise to a minimum. STULZ rates Mixed and Free Cooling operation at up to 83 per cent savings on energy costs. Indigi Power and Cooling supplies, installs, commissions and maintains STULZ TelAir units nationally from hubs in Brisbane, Sydney and Melbourne.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eTelecommunications shelters, equipment rooms and modular containers are a different cooling problem to a data hall. The heat load is small in absolute terms, usually somewhere between 3 kW and 15 kW, but it is constant, the room is unoccupied for most of the year, and the consequence of losing cooling is a base station, an exchange or a signalling system dropping out. The STULZ TelAir is built specifically for that duty. It is a floor standing, indoor installed unit covering 4 kW to 16 kW in two cabinet sizes, with a Free Cooling capability that lets it run for long periods without engaging the compressor at all.\u003c\/p\u003e\n\n\u003cp\u003eThe distinguishing feature of the TelAir within the STULZ shelter cooling range is that it goes inside the box. STULZ states in the shelter cooling brochure that TelAir units are designed for installation in telecommunications containers, equipment rooms and server rooms, and that because they are installed indoors, noise is kept to a minimum and the units are protected against environmental influences and vandalism. For Australian operators that matters in three specific situations: sites where an external unit cannot be mounted at all, such as heritage listed buildings, leased tenancies and cyclone rated structures in northern Australia; unattended remote sites where anything reachable from the ground eventually gets interfered with; and sites where the acoustic assessment measures noise at the boundary rather than inside the room.\u003c\/p\u003e\n\n\u003cp\u003eThe TelAir is also the model in the range with the widest choice of air conduction. Upflow, Downflow and Displacement are all available, and the Displacement variant with adjustable fins lets the airflow be directed horizontally or vertically entirely as required to suit the equipment layout. That flexibility is what usually decides a retrofit, because in an existing shelter you rarely get to choose where the racks sit.\u003c\/p\u003e\n\n\u003cp\u003eIndigi Power and Cooling is an Indigenous and Veteran owned critical power and cooling specialist, registered with Supply Nation and ICN Gateway. We supply, install, commission and maintain STULZ shelter and container cooling equipment across Australia, and we also service the installed base of shelter cooling units already running on Australian telecommunications, rail and utility sites.\u003c\/p\u003e\n\n\u003cp style=\"font-size:15px;color:#555555;background-color:#fafafa;border-radius:6px;padding:12px 16px;margin-bottom:28px;\"\u003eNote on the name: TelAir is also used by an unrelated manufacturer of caravan and recreational vehicle air conditioners. This page covers the STULZ TelAir, which is industrial precision cooling equipment for telecommunications shelters and equipment rooms. It is not a recreational vehicle product and the two ranges have nothing in common.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eSee STULZ shelter cooling in operation\u003c\/h2\u003e\n\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:8px;margin-bottom:10px;background:#111111;\"\u003e\n  \u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-fzfhYF0uiE\" title=\"STULZ Shelter Cooling (english)\" frameborder=\"0\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\"\u003e\u003c\/iframe\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;color:#888888;margin:0 0 28px 0;\"\u003eSTULZ Shelter Cooling (english), 2 minutes 47 seconds. The video covers the full STULZ shelter and container cooling range, so it shows the outdoor mounted models as well as the indoor installed TelAir.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eWhy the STULZ TelAir leads its class\u003c\/h2\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin-bottom:28px;\"\u003e\n  \u003cdiv style=\"background-color:#111111;border-radius:8px;padding:18px 20px;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#d9590c;margin:0 0 8px 0;\"\u003eInstalled inside the shelter\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#e8e8e8;margin:0;\"\u003eThe whole unit sits within the container or equipment room envelope, so it is shielded from rain, UV, salt air, dust and physical interference. Nothing on the outside of the shelter identifies it as plant worth attacking.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background-color:#111111;border-radius:8px;padding:18px 20px;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#d9590c;margin:0 0 8px 0;\"\u003eFour airflow directions\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#e8e8e8;margin:0;\"\u003eUpflow, Downflow, Displacement, and Displacement with adjustable fins that direct the air horizontally or vertically as required. This is the widest air conduction choice in the STULZ shelter range.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background-color:#111111;border-radius:8px;padding:18px 20px;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#d9590c;margin:0 0 8px 0;\"\u003eUp to 83 per cent energy saving\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#e8e8e8;margin:0;\"\u003eSTULZ rates Mixed and Free Cooling operation at up to 83 per cent savings on energy costs, and notes that TelAir units reach maximum EER values in Free Cooling because of their high airflow in Free Cooling and Mixed modes.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background-color:#111111;border-radius:8px;padding:18px 20px;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#d9590c;margin:0 0 8px 0;\"\u003eSmall footprint, two sizes\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#e8e8e8;margin:0;\"\u003eSize 1 is 650 mm wide and 650 mm deep, Size 2 is 900 mm wide and 750 mm deep, both 2,050 mm high. A 4 kW to 16 kW range covers almost every shelter and equipment room load in one product family.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background-color:#111111;border-radius:8px;padding:18px 20px;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#d9590c;margin:0 0 8px 0;\"\u003eLow refrigerant charge\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#e8e8e8;margin:0;\"\u003eCharge sizes sit below ten tonnes of CO2 equivalent, in a hermetically sealed refrigerant circuit that is standard with the EC compressor and optional with the On\/Off compressor. Less charge means less leak risk and a lighter compliance burden.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"background-color:#111111;border-radius:8px;padding:18px 20px;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#d9590c;margin:0 0 8px 0;\"\u003eBuilt for unattended sites\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#e8e8e8;margin:0;\"\u003eSEC.blue control, monitoring and remote access through a web interface, an optional Ethernet port, and backup operation on 48 V DC or 230 V single phase so cooling survives a mains outage on the site battery plant.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eHeadline specification\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x:auto;border-radius:8px;border:1px solid #2a2a2a;margin-bottom:28px;\"\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.4;\"\u003e\n    \u003ccaption style=\"caption-side:top;text-align:left;font-size:14px;color:#777777;padding:0 0 8px 2px;\"\u003eTable: STULZ TelAir headline specification, from the STULZ Shelter Cooling brochure 2311 EN\u003c\/caption\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color:#111111;color:#ffffff;\"\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eParameter\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eApplication\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eFree Cooling solution for equipment rooms and telecommunication containers\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eInstallation position\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eIndoors, inside the telecommunications container, equipment room or server room\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eCooling capacity\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003e4 kW to 16 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eSizes\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003e2 sizes. Size 1 is 650 x 2,050 x 650 mm, Size 2 is 900 x 2,050 x 750 mm (width x height x depth)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eAir conduction\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eUpflow, Downflow and Displacement. Displacement with adjustable fins directs air horizontally or vertically to suit the server layout\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eCompressor\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eOn\/Off compressor (TX series) or EC compressor (TN series), both with soft start for low start-up currents\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eRefrigerants\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eR410A (GWP 2,088) with EC compressor, R407C (GWP 1,774) with On\/Off compressor, R513A (GWP 631) for high temperature operation\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eRefrigerant charge\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eLow charge, below ten tonnes CO2 equivalent. Hermetically sealed circuit standard with EC compressor, optional with On\/Off compressor\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eEnergy saving\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eUp to 83 per cent savings on energy costs with Mixed and Free Cooling modes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eOutside air conditions\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eMinus 20 degrees Celsius winter to plus 50 degrees Celsius summer. Optional winter kit to minus 40 degrees Celsius. Optional high temperature operation to 55 degrees Celsius with R513A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eFiltration\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eZigzag filter, ISO 16890 class ePM10 50 per cent, with filter monitor and airflow alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eCondenser\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eMicrochannel technology, with condensation pressure control\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eControl\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eSEC.blue control system with inside and outside temperature sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eConnectivity\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eMonitoring and remote access via a web interface, with an optional Ethernet port\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eBackup operation\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003e48 V DC or 230 V \/ 50 Hz \/ 1 Ph\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eElectrical connection\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003ePlug and play wiring with connector\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;\"\u003eOptions\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;\"\u003eExternal operator terminal, electric heater, humidity sensor, Ethernet port, winter kit, high temperature operation\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eHow to read a STULZ TelAir model code\u003c\/h2\u003e\n\n\u003cp\u003eTelAir model codes are readable once you know the pattern. The code is built from the range letter, the compressor type, the airflow direction and the nominal capacity, in that order. Getting the airflow letter right at order stage matters more than anything else on this range, because it is the one thing that cannot be changed on site.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;border-radius:8px;border:1px solid #2a2a2a;margin-bottom:20px;\"\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.4;\"\u003e\n    \u003ccaption style=\"caption-side:top;text-align:left;font-size:14px;color:#777777;padding:0 0 8px 2px;\"\u003eTable: STULZ TelAir nomenclature. Model code reads as TelAir plus compressor type plus airflow direction plus capacity.\u003c\/caption\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color:#111111;color:#ffffff;\"\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003ePosition\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eCode\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;\"\u003eMeaning\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e1. Range\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eT\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eTelAir, the indoor installed shelter and equipment room unit\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e2. Compressor\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eX or N\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eTX is the On\/Off compressor. TN is the variable speed EC compressor\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e3. Airflow direction\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eD, U, F or G\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eD is Downflow. U is Upflow. F is Displacement. G is Displacement with adjustable fins\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e4. Capacity code\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e40 to A6\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003e40 is 4 kW, 60 is 6 kW, 80 is 8 kW, 90 is 9 kW, A1 is 10 kW, A4 is 14 kW, A6 is 16 kW nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;\"\u003eWorked example\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;\"\u003eTNG A6\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;\"\u003eTelAir, EC compressor, Displacement with adjustable fins, 16 kW nominal capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eModel tables: TelAir with On\/Off compressor (TX series)\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x:auto;border-radius:8px;border:1px solid #2a2a2a;margin-bottom:24px;\"\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;line-height:1.4;\"\u003e\n    \u003ccaption style=\"caption-side:top;text-align:left;font-size:14px;color:#777777;padding:0 0 8px 2px;\"\u003eTable: STULZ TelAir TX series, On\/Off compressor. Operating conditions are inside temperature 30 degrees Celsius at 30 per cent relative humidity, outside temperature 35 degrees Celsius. Each capacity code is available in all four airflow directions.\u003c\/caption\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color:#111111;color:#ffffff;\"\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eCapacity code\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eModel codes\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eCooling capacity kW\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eSize\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;\"\u003eW x H x D mm\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e40\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTXD 40, TXF 40, TXG 40, TXU 40\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e4.3\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e650 x 2,050 x 650\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e60\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTXD 60, TXF 60, TXG 60, TXU 60\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e5.7\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e650 x 2,050 x 650\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e80\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTXD 80, TXF 80, TXG 80, TXU 80\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e7.8\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e650 x 2,050 x 650\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e90\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTXD 90, TXF 90, TXG 90, TXU 90\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e9.5\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e650 x 2,050 x 650\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eA1\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTXD A1, TXF A1, TXG A1, TXU A1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e11.4\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e900 x 2,050 x 750\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eA4\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTXD A4, TXF A4, TXG A4, TXU A4\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e14.1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e900 x 2,050 x 750\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;\"\u003eA6\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;\"\u003eTXD A6, TXF A6, TXG A6, TXU A6\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;\"\u003e16.1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;\"\u003e900 x 2,050 x 750\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eModel tables: TelAir with EC compressor (TN series)\u003c\/h2\u003e\n\n\u003cdiv style=\"overflow-x:auto;border-radius:8px;border:1px solid #2a2a2a;margin-bottom:20px;\"\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;line-height:1.4;\"\u003e\n    \u003ccaption style=\"caption-side:top;text-align:left;font-size:14px;color:#777777;padding:0 0 8px 2px;\"\u003eTable: STULZ TelAir TN series, variable speed EC compressor with R410A and a hermetically sealed refrigerant circuit as standard.\u003c\/caption\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color:#111111;color:#ffffff;\"\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eCapacity code\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eModel codes\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eCooling capacity kW\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eSize\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:12px 14px;text-align:left;font-weight:700;\"\u003eW x H x D mm\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e80\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTND 80, TNF 80, TNG 80, TNU 80\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e8.2\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e650 x 2,050 x 650\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eA1\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eTND A1, TNF A1, TNG A1, TNU A1\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e11.4\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-bottom:1px solid #e3e3e3;\"\u003e900 x 2,050 x 750\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:10px 14px;font-weight:700;border-right:1px solid #e3e3e3;\"\u003eA6\u003c\/th\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;\"\u003eTND A6, TNF A6, TNG A6, TNU A6\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;\"\u003e15.5\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;border-right:1px solid #e3e3e3;\"\u003e2\u003c\/td\u003e\n\u003ctd style=\"padding:10px 14px;\"\u003e900 x 2,050 x 750\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cp style=\"font-size:15px;color:#555555;margin-bottom:28px;\"\u003eCapacity codes 40 through 90 are Size 1 cabinets and codes A1 through A6 are Size 2 cabinets. Choose the TX series where the load is stable and first cost matters, and the TN series where the load varies through the day or across seasons, because the EC compressor modulates rather than cycling and it brings the hermetically sealed circuit as standard. Send us the shelter dimensions, the equipment load and the site location and we will confirm the selection against real conditions rather than nominal ones.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eFour air conduction options, and why they decide the job\u003c\/h2\u003e\n\n\u003cp\u003eAir conduction is the single most important selection decision on an indoor installed shelter unit, and it is the reason the TelAir often wins a job against the outdoor mounted alternatives. In an outdoor wall mounted unit the air enters and leaves through one wall aperture, so the throw pattern is largely fixed. The TelAir stands inside the room, which means the discharge can be pointed wherever the equipment actually is.\u003c\/p\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-bottom:24px;\"\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:16px 18px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:0 0 6px 0;\"\u003eDownflow (D)\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#555;margin:0;\"\u003eCooled air is discharged downwards, low into the room or into a floor void where one exists. Suits shelters where the equipment draws air at the bottom of the rack and the return path runs high.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:16px 18px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:0 0 6px 0;\"\u003eUpflow (U)\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#555;margin:0;\"\u003eDischarge from the top of the unit, free blowing or ducted. The usual choice in a container with no floor void, and where a duct has to carry air over the top of a rack line.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:16px 18px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:0 0 6px 0;\"\u003eDisplacement (F)\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#555;margin:0;\"\u003eLow velocity displacement of cool air into the occupied zone rather than a high velocity throw. Reduces short circuiting and mixing in a small room where a jet of cold air would simply loop back to the return.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:16px 18px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:0 0 6px 0;\"\u003eDisplacement with fins (G)\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#555;margin:0;\"\u003eThe airflow can be directed horizontally or vertically entirely as required via adjustable fins, so the discharge is aimed at the server layout rather than the layout being built around the unit. The most adaptable option in the range.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe practical value of the G variant shows up in retrofit work, which is most of what happens in Australia. An existing exchange room or base station shelter already has its racks, its cable trays and its DC plant in fixed positions, often installed decades apart by different contractors. Being able to aim the discharge at the equipment after the unit is in place, rather than accepting whatever the geometry gives you, is what keeps rack inlet temperatures inside the ASHRAE TC 9.9 recommended envelope of 18 to 27 degrees Celsius without adding ductwork.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eFree Cooling, Mixed Cooling and what it saves in Australia\u003c\/h2\u003e\n\n\u003cp\u003eA TelAir does not have to run its compressor to cool a shelter. When the outside air is cooler than the room, the unit can reject heat without mechanical cooling, and STULZ rates the resulting operating cost reduction at up to 83 per cent savings on energy costs across the Mixed and Free Cooling modes. The brochure notes that TelAir units are especially efficient in Free Cooling mode, achieving maximum EER values because of their high airflow in Free Cooling and Mixed modes. Airflow is the lever: moving more air at low fan power displaces more compressor hours.\u003c\/p\u003e\n\n\u003cp\u003eOperation moves between three states. In Free Cooling the compressor is off and the cooling is done by outside air conditions alone. In Mixed Cooling the compressor runs at part load to top up the shortfall, which is where a large share of the annual hours actually sit in most Australian locations. In mechanical cooling the unit runs conventionally, which is what happens through a Brisbane or Darwin summer afternoon.\u003c\/p\u003e\n\n\u003cp\u003eHow much of the year lands in each mode depends entirely on where the shelter is. A signalling hut on the Victorian regional network, a Canberra exchange, a Tasmanian repeater site or an inland New South Wales base station will spend a large part of the year in Free Cooling or Mixed Cooling. A Pilbara or Top End site will not, and there the honest argument for the TelAir is different: reliability, the minus 20 to plus 50 degrees Celsius standard operating envelope, the optional high temperature package to 55 degrees Celsius using R513A, and condensation pressure control that keeps the refrigerant circuit stable when the ambient swings hard between night and day.\u003c\/p\u003e\n\n\u003cp\u003eTwo options matter at the extremes of the Australian range. The optional winter kit extends operation down to minus 40 degrees Celsius, which is well beyond anything on the mainland but relevant to alpine and sub-antarctic work. The optional high temperature operation to 55 degrees Celsius with R513A is the one that comes up repeatedly on mine sites, remote telecommunications repeaters and unshaded rooftop plant rooms in the north.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eRefrigerant charge and Australian compliance\u003c\/h2\u003e\n\n\u003cp\u003eThe TelAir carries a low refrigerant charge, below ten tonnes of CO2 equivalent, in a hermetically sealed refrigerant circuit. The sealed circuit is standard on EC compressor models and optional on On\/Off compressor models. STULZ points out in the brochure that this removes the requirement for the annual leak test under the European F-gas Regulation. That exemption is a European provision and it does not carry across to Australia, so it should not be relied on when writing an Australian maintenance specification.\u003c\/p\u003e\n\n\u003cp\u003eIn Australia the governing regime is the Ozone Protection and Synthetic Greenhouse Gas Management Act 1989 and its regulations. Under that framework, anyone handling fluorocarbon refrigerant needs an ARCtick refrigerant handling licence issued by the Australian Refrigeration Council, and any business that acquires, stores or disposes of refrigerant needs a Refrigerant Trading Authorisation. Those obligations apply regardless of charge size, and they apply to a 3 kg shelter unit exactly as they apply to a data hall chiller.\u003c\/p\u003e\n\n\u003cp\u003eWhat the low charge does change is the practical cost and risk. A smaller charge means less refrigerant to lose in a leak event, a smaller recovery and recharge job when a component is replaced, a lower embodied carbon exposure if your organisation reports on it, and a lighter leak checking burden in a maintenance regime that is written on a risk basis rather than a fixed schedule. On a national base station fleet with hundreds of shelters, that difference is material across the asset life. The refrigerant options themselves also matter to a long term specification: R410A at GWP 2,088 with the EC compressor, R407C at GWP 1,774 with the On\/Off compressor, and R513A at GWP 631 where high temperature operation is specified.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eControl, monitoring and unattended site operation\u003c\/h2\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-bottom:24px;\"\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:16px;background-color:#fafafa;text-align:center;\"\u003e\n    \n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:0 0 6px 0;\"\u003eSEC.blue control\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#555;margin:0;text-align:left;\"\u003eThe SEC.blue controller manages the changeover between Free Cooling, Mixed Cooling and mechanical cooling using inside and outside temperature sensors, and drives the filter monitor and airflow alarm. An external operator terminal is available as an option where the display needs to be readable without opening the unit.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:16px;background-color:#fafafa;text-align:center;\"\u003e\n    \n    \u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:0 0 6px 0;\"\u003eRemote access and alarms\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;color:#555;margin:0;text-align:left;\"\u003eMonitoring and remote access run through a web interface, with an optional Ethernet port available on the TelAir. On an unattended shelter this is the difference between finding out about a filter alarm from the network operations centre and finding out about it from a thermal shutdown.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eBackup operation is the other feature that matters on a telecommunications site. The TelAir can be arranged to run on 48 V DC or on 230 V \/ 50 Hz single phase, which lets cooling ride through a mains outage on the same DC plant that keeps the radio equipment alive. Compressor soft start keeps start-up currents low, which is exactly what you want when the unit restarts onto a generator or an inverter rather than onto the grid. Plug and play electrical wiring with a connector shortens the licensed electrical work at each site, which is worth real money when the same install is being repeated across a fleet.\u003c\/p\u003e\n\n\u003cp\u003eFiltration is ISO 16890 class ePM10 50 per cent using a zigzag filter element, monitored so that a blocked filter raises an alarm rather than quietly eroding capacity. Because a shelter unit runs unattended between visits, and because Australian sites bring red dust, pollen, coastal salt and bushfire smoke, filter condition is the single most common cause of a gradual loss of cooling capacity on this class of equipment. Pair that with our \u003ca href=\"\/pages\/server-room-heat-load-calculator\" style=\"color:#d9590c;\"\u003eserver room heat load calculator\u003c\/a\u003e to sanity check the load before selection.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eAustralian applications\u003c\/h2\u003e\n\u003cul style=\"font-size:17px;padding-left:22px;margin-bottom:28px;\"\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eTelecommunications exchanges and equipment rooms, where the plant must sit inside the building because there is nowhere compliant to mount it outside\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eMobile network base station shelters and containers, including unattended greenfield sites where external plant is a vandalism and theft target\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eRail signalling equipment rooms and trackside relay huts with continuous duty and restricted access windows\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eRemote mine site communications rooms, where high ambient conditions and dust drive the selection toward high temperature operation and monitored filtration\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eWater and power utility RTU and SCADA rooms operating under APRA CPS 230 style resilience and continuity expectations\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eSmall \u003ca href=\"\/pages\/server-room-cooling-australia\" style=\"color:#d9590c;\"\u003eserver rooms and comms rooms inside existing buildings\u003c\/a\u003e, including heritage listed and leased premises where an external unit is not permitted\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eModular edge compute containers and prefabricated plant rooms, where the cooling is fitted out at the factory and shipped as part of the module\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003eSites where cooling and power must be planned together, covered on our \u003ca href=\"\/pages\/server-room-ups-cooling-australia\" style=\"color:#d9590c;\"\u003eserver room UPS and cooling\u003c\/a\u003e page\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eSTULZ TelAir compared with STULZ WallAir\u003c\/h2\u003e\n\n\u003cp\u003eThe closest comparison for a TelAir is not a competitor product. It is the WallAir, the outdoor wall mounted unit in the same STULZ shelter cooling range. Both cover the same 4 kW to 16 kW band and both offer Free Cooling, so the decision is really about where the box goes and what that costs you in space, noise, exposure and access. The table below sets out the trade in both directions.\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;border-radius:8px;border:1px solid #2a2a2a;margin-bottom:28px;\"\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;font-size:15px;line-height:1.4;\"\u003e\n    \u003ccaption style=\"caption-side:top;text-align:left;font-size:14px;color:#777777;padding:0 0 8px 2px;\"\u003eTable: STULZ TelAir indoor installed compared with the outdoor wall mounted STULZ WallAir in the same shelter cooling range\u003c\/caption\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background-color:#111111;color:#ffffff;\"\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eAttribute\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;border-right:1px solid #333;\"\u003eSTULZ TelAir\u003c\/th\u003e\n        \u003cth scope=\"col\" style=\"padding:13px 16px;text-align:left;font-weight:700;\"\u003eSTULZ WallAir\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eMounting position\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eInside the container, equipment room or server room, standing on the floor against an internal wall\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eEntirely on the outside face of the container wall, fixed through a wall cutout\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eInternal space consumed\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eCabinet footprint of 650 x 650 mm or 900 x 750 mm, plus front access clearance for service\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eNone. Zero internal footprint and no internal service clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eNoise\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eQuieter externally, because the whole unit is inside the shelter envelope. STULZ states noise is kept to a minimum for this reason. Sound is generated inside an unoccupied room\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eQuieter inside the shelter, but compressor and condenser fan noise is radiated to the site boundary\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eWeather exposure\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eProtected by the shelter envelope. Rain, UV, salt air and wind loading are not design drivers for the unit itself\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eFully exposed. Weatherproof construction, with coastal corrosion and wind loading to be specified at design stage\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eVandalism and interference\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eProtected. STULZ lists protection against vandalism as a direct benefit of indoor installation, and the unit sits behind the shelter door and site security\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003ePhysically reachable at unattended sites. Managed with siting, guarding and remote alarming\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eAir conduction options\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eFour. Upflow, Downflow, Displacement, and Displacement with adjustable fins that aim the air horizontally or vertically to suit the server layout\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eFixed by the wall aperture, so the throw pattern is largely determined by where the cutout is\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#fafafa;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eServiceability\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;border-bottom:1px solid #e3e3e3;\"\u003eServiced from inside at floor level, in the dry and out of the sun, but the technician works alongside live equipment in a confined space\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;border-bottom:1px solid #e3e3e3;\"\u003eServiced from outside so the shelter stays closed, but working at height or from a platform may apply on elevated mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr style=\"background-color:#ececec;\"\u003e\n\u003cth scope=\"row\" style=\"padding:11px 16px;font-weight:700;border-right:1px solid #e3e3e3;\"\u003eBest fit\u003c\/th\u003e\n\u003ctd style=\"padding:11px 16px;border-right:1px solid #e3e3e3;\"\u003eShelters and equipment rooms with spare internal floor space, sites with high vandalism or theft risk, severe external exposure, external mounting restrictions, or an awkward equipment layout that needs directed airflow\u003c\/td\u003e\n\u003ctd style=\"padding:11px 16px;\"\u003eSpace constrained shelters, retrofit into an existing wall cutout, and sites where nothing can be given up inside the room. See the \u003ca href=\"\/products\/stulz-wallair-outdoor-container-cooling-australia\" style=\"color:#d9590c;\"\u003eSTULZ WallAir page\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eInstallation, commissioning and maintenance in Australia\u003c\/h2\u003e\n\n\u003cp\u003eA TelAir installation is licensed work on two fronts. All electrical work must be carried out by a licensed electrician to AS\/NZS 3000, covering the supply to the unit, termination of the plug and play connector, and any interface to the site DC plant where 48 V backup operation is used. All work on the refrigerant circuit requires an ARCtick licensed refrigeration technician under the Ozone Protection and Synthetic Greenhouse Gas Management Act and its regulations, and the business carrying out the work needs a Refrigerant Trading Authorisation. Where the unit forms part of a mechanical ventilation arrangement, the hygiene obligations in AS\/NZS 3666 apply to the air path, the filters and the condensate arrangement. Indigi carries out all of this in house rather than subcontracting the critical path.\u003c\/p\u003e\n\n\u003cp\u003eA typical installation scope covers heat load verification against the actual equipment draw rather than the nameplate, confirmation that the chosen air conduction direction suits the existing rack and cable tray layout, floor loading and access route checks for a 2,050 mm tall cabinet, positioning and fixing, condenser air path and any wall penetrations, refrigerant charge check and leak test, electrical connection and isolation, SEC.blue configuration including Free Cooling changeover strategy and alarm thresholds, remote access and Ethernet setup where specified, and witness commissioning with a documented handover. Indicative pricing for server room and shelter cooling design and installation runs from $8,000 to $15,000 for small rooms and single shelter jobs, $25,000 to $45,000 for medium installations and $45,000 to $60,000 plus for large projects. On a multi site rollout the per site figure typically falls once the design is settled and mobilisations are planned in blocks, so ask us for a programme price rather than a single site price.\u003c\/p\u003e\n\n\u003cp\u003eOnce running, a TelAir needs a maintenance regime built around unattended continuous duty. Filters come first, and the filter monitor will flag them, but the schedule should also cover microchannel condenser coil cleanliness, condensate management, refrigerant charge and leak inspection, compressor and fan health, damper and fin operation where the Displacement with fins variant is fitted, verification of the Free Cooling changeover, backup operation testing on the 48 V DC or 230 V supply, and a review of controller alarm history since the last visit. See our \u003ca href=\"\/pages\/crac-unit-maintenance-services\" style=\"color:#d9590c;\"\u003eCRAC unit maintenance services\u003c\/a\u003e and \u003ca href=\"\/pages\/dx-crac-servicing-brisbane-sydney-melbourne\" style=\"color:#d9590c;\"\u003eDX CRAC servicing\u003c\/a\u003e pages for how we structure visits, and our \u003ca href=\"\/pages\/crac-installation-commissioning-australia\" style=\"color:#d9590c;\"\u003eCRAC installation and commissioning\u003c\/a\u003e page for the install process in detail.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eFrequently asked questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:24px 0 8px 0;\"\u003eWhat is the STULZ TelAir and where is it installed?\u003c\/h3\u003e\n\u003cp\u003eThe STULZ TelAir is a Free Cooling air conditioning unit for equipment rooms and telecommunication containers, covering 4 kW to 16 kW in two cabinet sizes. Unlike the outdoor mounted models in the STULZ shelter range, the TelAir is installed indoors, inside the telecommunications container, equipment room or server room. STULZ states that because the units are installed indoors, noise is kept to a minimum and the units are protected against environmental influences and vandalism.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:24px 0 8px 0;\"\u003eWhat cooling capacity does the STULZ TelAir cover?\u003c\/h3\u003e\n\u003cp\u003eThe range covers 4 kW to 16 kW in two sizes. The On\/Off compressor TX series runs 4.3, 5.7, 7.8, 9.5, 11.4, 14.1 and 16.1 kW at capacity codes 40, 60, 80, 90, A1, A4 and A6. The EC compressor TN series runs 8.2, 11.4 and 15.5 kW at codes 80, A1 and A6. Figures are quoted at 30 degrees Celsius inside at 30 per cent relative humidity with 35 degrees Celsius outside. Size 1 cabinets are 650 x 2,050 x 650 mm and Size 2 cabinets are 900 x 2,050 x 750 mm.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:24px 0 8px 0;\"\u003eWhat air conduction options does the STULZ TelAir offer?\u003c\/h3\u003e\n\u003cp\u003eFour. Upflow, Downflow, Displacement, and Displacement with adjustable fins. In the Displacement model with fins the airflow can be directed horizontally or vertically entirely as required to suit the server layout. This is the widest choice of air conduction in the STULZ shelter cooling range, and it is the main technical reason to choose a TelAir over an outdoor wall mounted unit in a retrofit where the rack layout is already fixed.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:24px 0 8px 0;\"\u003eHow much can Free Cooling save on a STULZ TelAir?\u003c\/h3\u003e\n\u003cp\u003eSTULZ rates Mixed and Free Cooling operation at up to 83 per cent savings on energy costs, and notes that TelAir units are especially efficient in Free Cooling mode, achieving maximum EER values because of their high airflow in Free Cooling and Mixed modes. Actual savings depend entirely on site location. Cooler sites in Victoria, Tasmania, the ACT and inland New South Wales capture far more Free Cooling hours than Darwin, Cairns or the Pilbara.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:24px 0 8px 0;\"\u003eWhich refrigerants does the STULZ TelAir use and what does Australian regulation require?\u003c\/h3\u003e\n\u003cp\u003eR410A at GWP 2,088 with the EC compressor, R407C at GWP 1,774 with the On\/Off compressor, and R513A at GWP 631 where high temperature operation to 55 degrees Celsius is specified. Charge sizes sit below ten tonnes of CO2 equivalent in a hermetically sealed circuit, standard with the EC compressor and optional with the On\/Off compressor. In Australia the applicable regime is the Ozone Protection and Synthetic Greenhouse Gas Management Act, which requires ARCtick licensing for refrigerant handling and a Refrigerant Trading Authorisation for the business. The European F-gas exemption from annual leak testing does not apply here, although a low charge does reduce the practical compliance and leak checking burden.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:24px 0 8px 0;\"\u003eShould I specify a STULZ TelAir or a STULZ WallAir?\u003c\/h3\u003e\n\u003cp\u003eChoose the TelAir where there is internal floor space to give up and the site benefits from having the plant protected: high vandalism or theft risk, severe coastal or high UV exposure, restrictions on external mounting such as heritage listed or leased premises, cyclone rated structures, or an awkward equipment layout that needs directed airflow. Choose the WallAir where internal space is the binding constraint or an existing wall cutout is being reused. Both cover 4 kW to 16 kW and both offer Free Cooling.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:19px;font-weight:700;color:#111111;margin:24px 0 8px 0;\"\u003eWho installs and services STULZ TelAir units in Australia?\u003c\/h3\u003e\n\u003cp\u003eIndigi Power and Cooling supplies, installs, commissions and maintains STULZ shelter and container cooling equipment across Australia from hubs in Brisbane, Sydney and Melbourne. Electrical work is carried out to AS\/NZS 3000 by licensed electricians, refrigerant work by ARCtick licensed technicians, and hygiene obligations under AS\/NZS 3666 are covered where mechanical ventilation applies. We also service existing shelter cooling units installed by others, and we can plan multi site programmes in blocks to control travel cost.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eWhere we install and service\u003c\/h2\u003e\n\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px;margin-bottom:32px;\"\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:18px 20px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:800;color:#111111;margin:0 0 6px 0;\"\u003e\u003ca href=\"\/pages\/ups-battery-crac-maintenance-brisbane\" style=\"color:#111111;text-decoration:none;\"\u003eBrisbane and QLD\u003c\/a\u003e\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;margin:0 0 5px 0;color:#555;\"\u003eBrisbane CBD, Woolloongabba, Eight Mile Plains, Port of Brisbane, Gold Coast, Sunshine Coast, Ipswich, Townsville, Cairns\u003c\/p\u003e\n    \u003cp style=\"font-size:14px;margin:0;color:#888888;\"\u003eNational HQ at Tingalpa. Cyclone rated structures north of Rockhampton often rule out external plant entirely, which is where the indoor installed TelAir becomes the only compliant option.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:18px 20px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:800;color:#111111;margin:0 0 6px 0;\"\u003e\u003ca href=\"\/pages\/ups-data-centre-cooling-maintenance-sydney\" style=\"color:#111111;text-decoration:none;\"\u003eSydney and NSW\u003c\/a\u003e\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;margin:0 0 5px 0;color:#555;\"\u003eSydney CBD, Parramatta, North Ryde, Macquarie Park, Western Sydney, Newcastle, Wollongong, Canberra (ACT)\u003c\/p\u003e\n    \u003cp style=\"font-size:14px;margin:0;color:#888888;\"\u003eDense exchange and equipment room estate, plus a large rail signalling footprint. Leased tenancies and heritage listed buildings are the usual reason external mounting is refused here.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:18px 20px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:800;color:#111111;margin:0 0 6px 0;\"\u003e\u003ca href=\"\/pages\/critical-power-crac-maintenance-melbourne\" style=\"color:#111111;text-decoration:none;\"\u003eMelbourne and VIC\u003c\/a\u003e\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;margin:0 0 5px 0;color:#555;\"\u003eMelbourne CBD, Port Melbourne, Docklands, Dandenong, Tullamarine, Geelong, Ballarat, regional Victoria\u003c\/p\u003e\n    \u003cp style=\"font-size:14px;margin:0;color:#888888;\"\u003eThe strongest Free Cooling case on the mainland. Regional Victorian signalling and utility sites spend a large share of the year in Free Cooling or Mixed Cooling mode.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:18px 20px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:800;color:#111111;margin:0 0 6px 0;\"\u003ePerth and WA\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;margin:0 0 5px 0;color:#555;\"\u003ePerth CBD, Fremantle, Kalgoorlie, Pilbara, regional WA\u003c\/p\u003e\n    \u003cp style=\"font-size:14px;margin:0;color:#888888;\"\u003eRemote mine site communications rooms with high ambient design conditions and heavy dust loading. High temperature operation with R513A and monitored filtration are the two options to discuss.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:18px 20px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:800;color:#111111;margin:0 0 6px 0;\"\u003eAdelaide and SA\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;margin:0 0 5px 0;color:#555;\"\u003eAdelaide CBD, Port Adelaide, Salisbury, Mount Gambier, Whyalla, regional SA\u003c\/p\u003e\n    \u003cp style=\"font-size:14px;margin:0;color:#888888;\"\u003eGood Free Cooling hours through the cooler months across the utility RTU and SCADA room estate, served from the Melbourne hub.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #e3e3e3;border-radius:8px;padding:18px 20px;background-color:#fafafa;\"\u003e\n    \u003ch3 style=\"font-size:19px;font-weight:800;color:#111111;margin:0 0 6px 0;\"\u003eDarwin and NT\u003c\/h3\u003e\n    \u003cp style=\"font-size:15px;margin:0 0 5px 0;color:#555;\"\u003eDarwin CBD, Palmerston, Katherine, Alice Springs, remote NT sites\u003c\/p\u003e\n    \u003cp style=\"font-size:14px;margin:0;color:#888888;\"\u003eFree Cooling hours are limited, so the case is built on protection and reliability. Latent load and condensate handling need specific attention at selection stage.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color:#111111;border-radius:8px;padding:16px 20px;margin-bottom:32px;\"\u003e\n  \u003cp style=\"color:#ffffff;margin:0;\"\u003e\n    \u003cstrong\u003eWestern Australia, Tasmania and Pacific Islands:\u003c\/strong\u003e shelter and equipment room work in these regions is scheduled in planned blocks to keep travel and mobilisation costs down, and we can combine TelAir cooling work with UPS and battery service into a single site visit.\n    \u003ca href=\"\/pages\/contact\" style=\"color:#d9590c;\"\u003eContact us to discuss scheduling.\u003c\/a\u003e\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2 style=\"font-size:22px;font-weight:800;color:#111111;margin:34px 0 16px 0;\"\u003eRelated products and services\u003c\/h2\u003e\n\u003cul style=\"font-size:17px;padding-left:22px;margin-bottom:28px;\"\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/products\/stulz-wallair-outdoor-container-cooling-australia\" style=\"color:#d9590c;\"\u003eSTULZ WallAir outdoor wall mounted container cooling\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/pages\/crac-unit-maintenance-services\" style=\"color:#d9590c;\"\u003eCRAC unit maintenance services Australia\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/pages\/dx-crac-servicing-brisbane-sydney-melbourne\" style=\"color:#d9590c;\"\u003eDX CRAC servicing across Brisbane, Sydney and Melbourne\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/pages\/crac-installation-commissioning-australia\" style=\"color:#d9590c;\"\u003eCRAC installation and commissioning\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/pages\/server-room-cooling-australia\" style=\"color:#d9590c;\"\u003eServer room cooling Australia\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/pages\/server-room-heat-load-calculator\" style=\"color:#d9590c;\"\u003eServer room heat load calculator\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/pages\/crac-topology-selector-australia\" style=\"color:#d9590c;\"\u003eCRAC topology selector: DX, CHW or CDW\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli style=\"margin-bottom:8px;\"\u003e\u003ca href=\"\/pages\/server-room-ups-cooling-australia\" style=\"color:#d9590c;\"\u003eServer room UPS and cooling packages\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ctable style=\"width:100%;border-collapse:collapse;\" role=\"presentation\"\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"background-color:#111111;border-radius:10px;padding:28px 24px;text-align:center;\"\u003e\n      \u003cp style=\"color:#ffffff;font-size:21px;font-weight:800;margin-top:0;margin-bottom:10px;\"\u003eGet a STULZ TelAir selection for your shelter or equipment room\u003c\/p\u003e\n      \u003cp style=\"color:#cfcfcf;font-size:16px;margin-top:0;margin-bottom:18px;\"\u003eSend us the equipment load, the internal dimensions, the rack layout and the site location and we will come back with a sized selection, the right air conduction variant and an installed price. Indigi Power and Cooling is Indigenous and Veteran owned, and registered with Supply Nation and ICN Gateway.\u003c\/p\u003e\n      \u003ca href=\"\/pages\/contact\" style=\"display:inline-block;background-color:#d9590c;color:#ffffff;font-weight:700;text-decoration:none;padding:12px 28px;border-radius:6px;\"\u003eContact Indigi Power and Cooling\u003c\/a\u003e\n    \u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Product\",\"name\":\"STULZ TelAir Indoor Telecom Shelter and Equipment Room Cooling Unit\",\"description\":\"Indoor installed Free Cooling air conditioning unit for telecommunications shelters, containers, equipment rooms and server rooms. 4 kW to 16 kW in two cabinet sizes, with Upflow, Downflow and Displacement air conduction including Displacement with adjustable fins. Up to 83 per cent energy cost savings in Mixed and Free Cooling modes. Supplied, installed and serviced across Australia by Indigi Power and Cooling.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"STULZ\"},\"category\":\"Telecommunications shelter and equipment room cooling\",\"offers\":{\"@type\":\"Offer\",\"availability\":\"https:\/\/schema.org\/InStock\",\"seller\":{\"@type\":\"Organization\",\"name\":\"Indigi Power and Cooling\",\"url\":\"https:\/\/www.indigipc.com.au\",\"telephone\":\"1800046344\",\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"10\/240 New Cleveland Road\",\"addressLocality\":\"Tingalpa\",\"addressRegion\":\"QLD\",\"postalCode\":\"4173\",\"addressCountry\":\"AU\"}},\"areaServed\":\"AU\"},\"model\":[\"TXD 40\",\"TXF 40\",\"TXG 40\",\"TXU 40\",\"TXD 60\",\"TXF 60\",\"TXG 60\",\"TXU 60\",\"TXD 80\",\"TXF 80\",\"TXG 80\",\"TXU 80\",\"TXD 90\",\"TXF 90\",\"TXG 90\",\"TXU 90\",\"TXD A1\",\"TXF A1\",\"TXG A1\",\"TXU A1\",\"TXD A4\",\"TXF A4\",\"TXG A4\",\"TXU A4\",\"TXD A6\",\"TXF A6\",\"TXG A6\",\"TXU A6\",\"TND 80\",\"TNF 80\",\"TNG 80\",\"TNU 80\",\"TND A1\",\"TNF A1\",\"TNG A1\",\"TNU A1\",\"TND A6\",\"TNF A6\",\"TNG A6\",\"TNU A6\"],\"additionalProperty\":[{\"@type\":\"PropertyValue\",\"name\":\"Cooling capacity\",\"value\":\"4 kW to 16 kW\"},{\"@type\":\"PropertyValue\",\"name\":\"Installation position\",\"value\":\"Indoors, inside the telecommunications container or equipment room\"},{\"@type\":\"PropertyValue\",\"name\":\"Air conduction\",\"value\":\"Upflow, Downflow, Displacement, Displacement with adjustable fins\"},{\"@type\":\"PropertyValue\",\"name\":\"Sizes\",\"value\":\"Size 1 650 x 2050 x 650 mm, Size 2 900 x 2050 x 750 mm\"},{\"@type\":\"PropertyValue\",\"name\":\"Refrigerants\",\"value\":\"R410A, R407C, R513A\"},{\"@type\":\"PropertyValue\",\"name\":\"Energy saving\",\"value\":\"Up to 83 per cent with Mixed and Free Cooling modes\"},{\"@type\":\"PropertyValue\",\"name\":\"Filtration\",\"value\":\"ISO 16890 ePM10 50 per cent zigzag filter with filter monitor\"},{\"@type\":\"PropertyValue\",\"name\":\"Control\",\"value\":\"SEC.blue with web interface and optional Ethernet port\"}]}\n\u003c\/script\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is the STULZ TelAir and where is it installed?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The STULZ TelAir is a Free Cooling air conditioning unit for equipment rooms and telecommunication containers, covering 4 kW to 16 kW in two cabinet sizes. Unlike the outdoor mounted models in the STULZ shelter range, the TelAir is installed indoors, inside the telecommunications container, equipment room or server room. STULZ states that because the units are installed indoors, noise is kept to a minimum and the units are protected against environmental influences and vandalism.\"}},\n{\"@type\":\"Question\",\"name\":\"What cooling capacity does the STULZ TelAir cover?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The range covers 4 kW to 16 kW in two sizes. The On\/Off compressor TX series runs 4.3, 5.7, 7.8, 9.5, 11.4, 14.1 and 16.1 kW at capacity codes 40, 60, 80, 90, A1, A4 and A6. The EC compressor TN series runs 8.2, 11.4 and 15.5 kW at codes 80, A1 and A6. Figures are quoted at 30 degrees Celsius inside at 30 per cent relative humidity with 35 degrees Celsius outside. Size 1 cabinets are 650 x 2,050 x 650 mm and Size 2 cabinets are 900 x 2,050 x 750 mm.\"}},\n{\"@type\":\"Question\",\"name\":\"What air conduction options does the STULZ TelAir offer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Four. Upflow, Downflow, Displacement, and Displacement with adjustable fins. In the Displacement model with fins the airflow can be directed horizontally or vertically entirely as required to suit the server layout. This is the widest choice of air conduction in the STULZ shelter cooling range, and it is the main technical reason to choose a TelAir over an outdoor wall mounted unit in a retrofit where the rack layout is already fixed.\"}},\n{\"@type\":\"Question\",\"name\":\"How much can Free Cooling save on a STULZ TelAir?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"STULZ rates Mixed and Free Cooling operation at up to 83 per cent savings on energy costs, and notes that TelAir units are especially efficient in Free Cooling mode, achieving maximum EER values because of their high airflow in Free Cooling and Mixed modes. Actual savings depend entirely on site location. Cooler sites in Victoria, Tasmania, the ACT and inland New South Wales capture far more Free Cooling hours than Darwin, Cairns or the Pilbara.\"}},\n{\"@type\":\"Question\",\"name\":\"Which refrigerants does the STULZ TelAir use and what does Australian regulation require?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"R410A at GWP 2,088 with the EC compressor, R407C at GWP 1,774 with the On\/Off compressor, and R513A at GWP 631 where high temperature operation to 55 degrees Celsius is specified. Charge sizes sit below ten tonnes of CO2 equivalent in a hermetically sealed circuit, standard with the EC compressor and optional with the On\/Off compressor. In Australia the applicable regime is the Ozone Protection and Synthetic Greenhouse Gas Management Act, which requires ARCtick licensing for refrigerant handling and a Refrigerant Trading Authorisation for the business. The European F-gas exemption from annual leak testing does not apply here, although a low charge does reduce the practical compliance and leak checking burden.\"}},\n{\"@type\":\"Question\",\"name\":\"Should I specify a STULZ TelAir or a STULZ WallAir?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Choose the TelAir where there is internal floor space to give up and the site benefits from having the plant protected: high vandalism or theft risk, severe coastal or high UV exposure, restrictions on external mounting such as heritage listed or leased premises, cyclone rated structures, or an awkward equipment layout that needs directed airflow. Choose the WallAir where internal space is the binding constraint or an existing wall cutout is being reused. Both cover 4 kW to 16 kW and both offer Free Cooling.\"}},\n{\"@type\":\"Question\",\"name\":\"Who installs and services STULZ TelAir units in Australia?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Indigi Power and Cooling supplies, installs, commissions and maintains STULZ shelter and container cooling equipment across Australia from hubs in Brisbane, Sydney and Melbourne. Electrical work is carried out to AS\/NZS 3000 by licensed electricians, refrigerant work by ARCtick licensed technicians, and hygiene obligations under AS\/NZS 3666 are covered where mechanical ventilation applies. Indigi also services existing shelter cooling units installed by others.\"}}\n]}\n\u003c\/script\u003e","brand":"STULZ","offers":[{"title":"Default Title","offer_id":52961701429568,"sku":null,"price":0.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/8375\/5840\/files\/TelAir_800x800px.jpg?v=1786199009","url":"https:\/\/www.indigipc.com.au\/products\/stulz-telair-telecom-shelter-equipment-room-cooling-australia","provider":"Indigi  Power \u0026 Cooling","version":"1.0","type":"link"}