{"product_id":"thermopompe-monobloc-tosot-rooftop-r32-de-3-tonnes-montreal-laval-longueuil-rive-sud-et-rive-nord","title":"Packaged Heat Pump System Tosot Rooftop R32 3 Ton | Montreal, Laval, Longueuil, South Shore and North Shore","description":"\u003ch2\u003eReplacing a gas or propane rooftop unit with a 100% electric heat pump\u003c\/h2\u003e\n\u003cp\u003eOn many commercial roofs in Montreal, Laval and Longueuil, the heating still comes from a natural gas or propane rooftop unit. When that unit reaches the end of its life, the question comes up: replace it with the same type of equipment, or switch to electricity. The \u003cstrong\u003eTOSOT TK-H03TC\/NhA-D(U)\u003c\/strong\u003e model answers the second option. TOSOT, a brand of the Gree group, describes it as a \"DC Inverter Rooftop Ultra Heat Fully Electric Heat Pump\": an all-electric \u003cstrong\u003epackaged heat pump\u003c\/strong\u003e, which needs no gas, and which delivers heating as well as air conditioning from a single outdoor cabinet.\u003c\/p\u003e\n\u003cp\u003eLike the old rooftop unit, this cabinet brings together the compressor, the coils and the fan, then connects to the building's duct system. The difference lies in the heat source: instead of a burner, an \u003cstrong\u003eR-32\u003c\/strong\u003e refrigeration cycle draws heat from the outdoor air to move it inside in winter, and reverses the process in summer. This 3 ton \u003cstrong\u003eRooftop R32\u003c\/strong\u003e posts a rated capacity of \u003cstrong\u003e36,000 BTU\/h\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat the conversion changes for your building\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo more gas supply or propane tank for this unit: the heat pump runs on electricity alone.\u003c\/li\u003e\n\u003cli\u003eNo combustion in the cabinet, so no combustion products to vent on the roof.\u003c\/li\u003e\n\u003cli\u003eA \u003cstrong\u003e208-230 V single-phase\u003c\/strong\u003e supply (1 phase, 60 Hz), which suits buildings with no three-phase service, with an MCA of 35.0 A and an MOCP of 40.0 A according to the spec sheet.\u003c\/li\u003e\n\u003cli\u003eAir conditioning in the same unit, from -5 °C to 52 °C outdoors, with a \u003cstrong\u003eSEER2 of 18.0\u003c\/strong\u003e and an EER2 of 11.2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe old gas or propane connection stops being used. Taking it out of service is planned with the qualified trades before the heat pump goes in, and we factor that into the project schedule.\u003c\/p\u003e\n\u003ch3\u003e36,000 BTU\/h nominal: reading \"3 ton\" correctly\u003c\/h3\u003e\n\u003cp\u003eThe name \"3 ton\" refers to the rated capacity of 36,000 BTU\/h. The certified values, the ones that appear on AHRI certificate 218471411 and ENERGY STAR certificate 4624791, are 34,000 BTU\/h in cooling at 35 °C and 34,000 BTU\/h in heating at 8.3 °C. We base our calculations on the certified values; the rated value mainly serves to name the size.\u003c\/p\u003e\n\u003cp\u003eBecause the compressor uses DC Inverter technology, capacity varies with demand. The TOSOT sheet publishes a range of 8,600 to 36,100 BTU\/h in cooling and 9,000 to 39,600 BTU\/h in heating at 8.3 °C. On the mild days of spring and fall, the unit can therefore run at the bottom of its range instead of starting and stopping endlessly.\u003c\/p\u003e\n\u003cp\u003eOne point deserves particular attention during a conversion: the capacity of the old burner must not be copied over as is. A gas rooftop unit was often chosen on other criteria, sometimes with a generous margin. We calculate the real heat losses of the space instead, then we check that the 3 ton, with or without backup heat, covers those needs.\u003c\/p\u003e\n\u003ch3\u003eHeating without gas through the Quebec winter\u003c\/h3\u003e\n\u003cp\u003eThe main worry for owners leaving gas behind is the deep cold. This model is \u003cstrong\u003eENERGY STAR Cold Climate certified\u003c\/strong\u003e and runs in heating mode at outdoor temperatures from -30 °C to 24 °C. The certified data gives two reference points:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e21,800 BTU\/h at -8.3 °C (17 °F), the certified rated capacity at that temperature;\u003c\/li\u003e\n\u003cli\u003e29,000 BTU\/h at -15 °C (5 °F), measured at maximum compressor speed, with a COP of 1.90.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe second figure is higher than the first because it does not measure the same thing: one is a rated value, the other corresponds to the compressor pushed to its maximum speed, as the ENERGY STAR Cold Climate criterion requires. The COP of 1.90 indicates that at -15 °C the unit delivers 1.90 units of heat for every unit of electricity it draws. The Inverter rotary compressor with vapour injection (EVI) is part of the equipment TOSOT describes for this \"Ultra Heat\" model, which delivers \u003cstrong\u003eheating down to -30 °C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eThe optional 5 or 10 kW electric backup heat\u003c\/h3\u003e\n\u003cp\u003eA gas rooftop unit gave the impression of a reserve of heat always on hand. To get that margin back, TOSOT offers optional \u003cstrong\u003eelectric backup heat kits\u003c\/strong\u003e of 5 kW or 10 kW on the 3 ton. These kits are electric heat strips: they turn electricity into heat without the effect of the heat pump, and therefore serve as a supplement during deep cold rather than as the main source.\u003c\/p\u003e\n\u003cp\u003eThe choice between 5 and 10 kW depends on the heat loss calculation and on the capacity available at the electrical panel, since the kit adds its own load to the circuit. The 15 and 20 kW kits are offered only on the 4 and 5 ton models; if your space needs one, it is often a sign that the capacity of the unit itself has to be reviewed.\u003c\/p\u003e\n\u003ch2\u003eReusing the location and the ducts of the old unit\u003c\/h2\u003e\n\u003cp\u003eIn most conversions, the goal is to keep what already works: the opening in the roof, the duct system and, if possible, the control. Here are the points we check before confirming that the TK-H03TC can take the place of your rooftop unit.\u003c\/p\u003e\n\u003ch3\u003eRoof curb and vertical or horizontal connection\u003c\/h3\u003e\n\u003cp\u003eThe cabinet measures 44 × 35-7\/16 × 49-1\/4 in. (1,120 × 900 × 1,250 mm), in width, depth and height. TOSOT publishes the dimensions of the roof curb: we compare them with the existing curb to find out whether it can be kept or whether an adaptation is needed. The ducts connect vertically, through the bottom, or horizontally, through the side, which makes it possible to follow the old unit's configuration in many cases. The installation clearances published in the spec sheet are respected around the cabinet.\u003c\/p\u003e\n\u003ch3\u003eWeight and roof structure\u003c\/h3\u003e\n\u003cp\u003eThe heat pump weighs 523 lb net and 545 lb gross, and holds 150 oz of R-32 refrigerant. We compare that weight with the one of the unit being removed and we check the condition of the structure and of the curb before setting it in place. Getting it up to the roof is part of the planning we prepare with you.\u003c\/p\u003e\n\u003ch3\u003eAirflow and static pressure on existing ducts\u003c\/h3\u003e\n\u003cp\u003eA duct system designed for a gas rooftop unit was not always sized for a heat pump. The centrifugal indoor blower on the 3 ton moves 1,120, 800 or 700 CFM depending on the speed (high, medium, low), with an external static pressure of 0.5 in. as standard and up to 0.7 in. at maximum. We measure the existing system to confirm that these values suit it, and we flag the sections to correct where needed. The air passes through an aluminum air filter, and the published sound pressure is 63 dB(A).\u003c\/p\u003e\n\u003ch3\u003eKeeping your 24 V thermostat or moving to the TOSOT thermostat\u003c\/h3\u003e\n\u003cp\u003eIf your old rooftop unit was controlled by a 24 V thermostat, it is possible to keep that principle: the heat pump accepts a standard 24 V thermostat from another manufacturer, provided the one chosen handles heat pump operation. The other option is the TOSOT RS485 thermostat. The standard controller listed on the sheet is the XE7C-23\/H. We help you choose based on how the space is used and on your occupants' habits.\u003c\/p\u003e\n\u003ch3\u003eThe steps of a conversion with AirGreen\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA visit to the old unit, the roof curb, the ducts and the electrical panel.\u003c\/li\u003e\n\u003cli\u003eA calculation of the heat losses and the cooling needs of the space.\u003c\/li\u003e\n\u003cli\u003eThe choice of backup heat: none, 5 kW or 10 kW, based on the calculation and the panel.\u003c\/li\u003e\n\u003cli\u003ePlanning the decommissioning of the gas or propane supply with the qualified trades.\u003c\/li\u003e\n\u003cli\u003eRemoval of the old rooftop unit, installation of the heat pump, connection to the ducts and commissioning.\u003c\/li\u003e\n\u003cli\u003eA walkthrough of the thermostat and the settings with your team.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTo compare several capacities or several brands of the Gree group before deciding, see our selection of \u003ca href=\"\/en\/collections\/thermopompe-monobloc-installation-partout-a-montreal-laval-longueuil-rive-sud-et-rive-nord\"\u003epackaged heat pumps\u003c\/a\u003e, which presents the Rooftop R32 models we install, from 2 to 5 ton.\u003c\/p\u003e\n\u003ch3\u003ePlanning the conversion of your rooftop unit\u003c\/h3\u003e\n\u003cp\u003eWe convert gas and propane rooftop units into electric \u003cstrong\u003epackaged heat pumps\u003c\/strong\u003e in Montreal, Laval, Longueuil, on the North Shore and on the South Shore, for businesses, offices and multiplexes connected to ducts. 100% free on-site estimate anywhere in Montreal, Laval, Longueuil, the North Shore and the South Shore: call AirGreen at 514 316-2973 to have your current unit, your ducts and your panel assessed. AirGreen inc., RBQ licence 5645-9605-01.\u003c\/p\u003e\n\u003ch3\u003eDocumentation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/Tosot_Rooftop_R32_TK-H03TC_Fiche_technique_AirGreen_FR.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTOSOT TK-H03TC spec sheet (French)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/Tosot_Rooftop_R32_TK-H03TC_Fiche_technique_AirGreen_EN.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTOSOT TK-H03TC spec sheet (English)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Tosot","offers":[{"title":"Default Title","offer_id":56367196209444,"sku":"TK-H03TC\/NhA-D(U)","price":0.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/1694\/6724\/files\/THERMOPOMPE_MONOBLOC_TOSOT_ROOFTOP_R32_3_TONNES_00_PROFIL_MONTREAL.png?v=1790077147","url":"https:\/\/airgreen.ca\/en\/products\/thermopompe-monobloc-tosot-rooftop-r32-de-3-tonnes-montreal-laval-longueuil-rive-sud-et-rive-nord","provider":"AirGreen Climatisation \u0026 Chauffage \/ Air Conditioning \u0026 Heating","version":"1.0","type":"link"}