{"product_id":"thermopompe-stratos-50-50-000-btu","title":"Stratos-50 Heat Pump – 50,000 BTU ","description":"\u003cdiv class=\"afi-fiche\" lang=\"en\"\u003e\n\n  \u003cp class=\"afi-f-lede\"\u003eA 50,000\u0026nbsp;BTU\/h pool heat pump from TTI FAB, a manufacturer based in Longueuil, for heating the water of an above-ground or in-ground pool. It draws heat from the outdoor air and transfers it to the water through a titanium heat exchanger, which is suitable for saltwater pools when the chlorinator is installed after the heat pump. It uses a fixed-speed compressor on a 240\u0026nbsp;V power supply protected by a 20\u0026nbsp;A breaker, and is adjusted with a digital control that has a built-in timer. It is the smallest Stratos model offered by Aqua Fibre Innovation.\u003c\/p\u003e\n\n  \u003cdiv class=\"afi-f-specs\"\u003e\n    \u003cdiv class=\"afi-f-spec\"\u003e\u003cspan class=\"afi-f-num\"\u003e50,000\u0026nbsp;BTU\u003c\/span\u003e\u003cspan class=\"afi-f-lbl\"\u003eRated capacity\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-spec\"\u003e\u003cspan class=\"afi-f-num\"\u003e240\u0026nbsp;V \/ 20\u0026nbsp;A\u003c\/span\u003e\u003cspan class=\"afi-f-lbl\"\u003ePower \/ breaker\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-spec\"\u003e\u003cspan class=\"afi-f-num\"\u003eTitanium\u003c\/span\u003e\u003cspan class=\"afi-f-lbl\"\u003eHeat exchanger, salt compatible\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-spec\"\u003e\u003cspan class=\"afi-f-num\"\u003e6\u0026nbsp;years\u003c\/span\u003e\u003cspan class=\"afi-f-lbl\"\u003eTTI warranty in Quebec\u003c\/span\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 class=\"afi-f-h2\"\u003eHighlights\u003c\/h2\u003e\n  \u003cdiv class=\"afi-f-cards\"\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003e50,000\u0026nbsp;BTU\/h rated\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eAccording to the TTI spec sheet, 51,900\u0026nbsp;BTU\/h with a COP of 6.1 with air and water at 26.7\u0026nbsp;°C and 80% humidity, and still 33,500\u0026nbsp;BTU\/h with air at 10\u0026nbsp;°C and 63% humidity (water at 26.7\u0026nbsp;°C).\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003eTitanium heat exchanger\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eSuitable for chlorine and saltwater pools, provided the outlet of the chlorinator or salt chlorine generator is placed after the heat pump, as TTI requires.\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003eFixed-speed compressor\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eA single power level: the heat pump heats at full capacity until it reaches the set temperature, then shuts off. It draws 10\u0026nbsp;A when running, on a 240\u0026nbsp;V, 20\u0026nbsp;A circuit.\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003eDigital control and timer\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eTemperature setting, clock, on\/off timer, display in °C or °F. No external timer to add.\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003eBuilt-in protections\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eAutomatic defrost, detection of water pressure that is too high or too low, automatic shutdown when the weather is too cold, and a delay of 3\u0026nbsp;minutes before the compressor starts.\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003eAutomatic restart\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eAfter a power outage, it restarts on its own: no need to go out and turn it back on.\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003eCompatible with modern pumps\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eAccording to TTI, it is designed to run at reduced flow with variable-speed or two-speed pumps, provided the flow stays at or above 57\u0026nbsp;L\/min (15\u0026nbsp;US gal\/min).\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-card\"\u003e\u003cspan class=\"afi-f-chk\"\u003e\u003c\/span\u003e\u003cdiv\u003e\u003cspan class=\"afi-f-ct\"\u003eQuebec manufacturer\u003c\/span\u003e\u003cspan class=\"afi-f-cx\"\u003eTTI FAB, of Longueuil, states that it designs and manufactures the Stratos at its plant in Quebec. Warranty claims are submitted directly to TTI.\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 class=\"afi-f-h2\"\u003eDescription\u003c\/h2\u003e\n  \u003cp class=\"afi-f-p\"\u003eA pool heat pump does not heat the water with an electric element: it draws heat from the outdoor air. The fan moves air over the evaporator coil, the compressor concentrates that heat in the refrigerant (R410A), then the titanium heat exchanger transfers it to the pool water. It therefore delivers more energy as heat than it consumes in electricity, which is what the coefficient of performance (COP) measures. According to the TTI spec sheet, the Stratos-50 reaches a COP of 6.1 with air at 26.7\u0026nbsp;°C and 80% humidity, and 4.0 with air at 10\u0026nbsp;°C and 63% humidity (water at 26.7\u0026nbsp;°C in both cases).\u003c\/p\u003e\n  \u003cp class=\"afi-f-p\"\u003eThe \u003cstrong\u003eStratos-50\u003c\/strong\u003e is a simple unit: a fixed-speed compressor, a single-phase 240\u0026nbsp;V power supply and a digital panel with clock and timer. It is designed to operate with air between 7 and 35\u0026nbsp;°C; below 7\u0026nbsp;°C, it shuts off on its own and displays code P7, which is not a malfunction. A solar cover or insulating cover, which TTI recommends, helps keep the heat produced in the pool.\u003c\/p\u003e\n  \u003cp class=\"afi-f-p\"\u003eThe pool sizes indicated by TTI are listed in the frequently asked questions below. For a larger pool, a property exposed to wind or a longer swimming season, the \u003cstrong\u003eStratos-65\u003c\/strong\u003e (65,000\u0026nbsp;BTU) and the \u003cstrong\u003eStratos-80\u003c\/strong\u003e (80,000\u0026nbsp;BTU) offer more power. If in doubt, call us before ordering.\u003c\/p\u003e\n\n  \u003ch2 class=\"afi-f-h2\"\u003eTechnical specifications\u003c\/h2\u003e\n  \u003ctable class=\"afi-f-tbl\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eManufacturer\u003c\/th\u003e\u003ctd\u003eTTI FAB, Longueuil (Quebec)\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eModel\u003c\/th\u003e\u003ctd\u003eStratos 50\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eType\u003c\/th\u003e\u003ctd\u003eAir-to-water pool heat pump, heating only\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eCompressor\u003c\/th\u003e\u003ctd\u003eFixed speed (on\/off), single power level\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eRated capacity\u003c\/th\u003e\u003ctd\u003e50,000\u0026nbsp;BTU\/h (14.7\u0026nbsp;kW)\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eAir 26.7\u0026nbsp;°C, 80% humidity\u003c\/th\u003e\u003ctd\u003e51,900\u0026nbsp;BTU\/h (15.2\u0026nbsp;kW), COP 6.1\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eAir 26.7\u0026nbsp;°C, 63% humidity\u003c\/th\u003e\u003ctd\u003e47,500\u0026nbsp;BTU\/h (13.9\u0026nbsp;kW), COP 5.7\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eAir 10\u0026nbsp;°C, 63% humidity\u003c\/th\u003e\u003ctd\u003e33,500\u0026nbsp;BTU\/h (9.8\u0026nbsp;kW), COP 4.0\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003ePower supply\u003c\/th\u003e\u003ctd\u003e240\u0026nbsp;V, single-phase, 60\u0026nbsp;Hz\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eBreaker\u003c\/th\u003e\u003ctd\u003e20\u0026nbsp;A\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eRunning amperage\u003c\/th\u003e\u003ctd\u003e10\u0026nbsp;A\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eRefrigerant\u003c\/th\u003e\u003ctd\u003eR410A\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eHeat exchanger\u003c\/th\u003e\u003ctd\u003eTitanium\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eWater connections\u003c\/th\u003e\u003ctd\u003e1\u0026nbsp;½\u0026nbsp;in.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eWater flow\u003c\/th\u003e\u003ctd\u003e57 to 170\u0026nbsp;L\/min (15 to 45\u0026nbsp;US gal\/min)\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eWater pressure\u003c\/th\u003e\u003ctd\u003e12 to 15\u0026nbsp;PSI in normal operation, 2\u0026nbsp;bar (30\u0026nbsp;PSI) maximum\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eOperating range\u003c\/th\u003e\u003ctd\u003eAir from 7 to 35\u0026nbsp;°C (45 to 95\u0026nbsp;°F); automatic shutdown below 7\u0026nbsp;°C\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eDefrost\u003c\/th\u003e\u003ctd\u003eAutomatic\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eControl\u003c\/th\u003e\u003ctd\u003eDigital panel: temperature, clock, on\/off timer, °C or °F\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eProtections\u003c\/th\u003e\u003ctd\u003eHigh or low water pressure detection, automatic shutdown when the weather is too cold, delay of 3\u0026nbsp;minutes when the compressor starts\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eAfter a power outage\u003c\/th\u003e\u003ctd\u003eAutomatic restart\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eDimensions (L × H × W)\u003c\/th\u003e\u003ctd\u003eApprox. 91 × 56 × 28\u0026nbsp;cm (36 × 22 × 11\u0026nbsp;in.)\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eNet weight\u003c\/th\u003e\u003ctd\u003e52\u0026nbsp;kg (115\u0026nbsp;lb)\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eUse\u003c\/th\u003e\u003ctd\u003eIn-ground or above-ground pools only\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eWarranty\u003c\/th\u003e\u003ctd\u003eIn Quebec: 6\u0026nbsp;years parts and labour from delivery, for a new heat pump purchased on or after October\u0026nbsp;5, 2026. Elsewhere in Canada: 5\u0026nbsp;years on parts, 3\u0026nbsp;years on the electronic circuit and digital control, 3\u0026nbsp;years labour.\u003c\/td\u003e\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp class=\"afi-f-p afi-f-sub\"\u003eValues from the TTI spec sheet, for water at 26.7\u0026nbsp;°C (80\u0026nbsp;°F). According to TTI, BTU and COP are calculated to the AHRI\u0026nbsp;1160 test standard, and BTU with a test flow of 60\u0026nbsp;US gal\/min. When installing, stay within the flow range shown in the table.\u003c\/p\u003e\n\n  \u003ch2 class=\"afi-f-h2\"\u003eInstallation\u003c\/h2\u003e\n  \u003ctable class=\"afi-f-tbl\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eElectrical\u003c\/th\u003e\u003ctd\u003eConnection by a master electrician, in accordance with the applicable codes: dedicated 240\u0026nbsp;V circuit, 20\u0026nbsp;A breaker installed near the unit in an accessible location, grounding mandatory. The exact requirements are shown on the nameplate.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eLocation\u003c\/th\u003e\u003ctd\u003eOutdoors only, never in a shed, garage or basement. On a flat, firm and level surface, ideally a concrete slab. Not under a roof (snow, water running off without a gutter) or near an automatic sprinkler, and out of direct sunlight on the control panel.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eClearances\u003c\/th\u003e\u003ctd\u003e60\u0026nbsp;cm (2\u0026nbsp;ft) in front of the evaporator coil; 120\u0026nbsp;cm (4\u0026nbsp;ft) in front of the other sides, the fan and the service panel.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eCondensation\u003c\/th\u003e\u003ctd\u003eThe unit produces condensation water: make sure there is good drainage around it.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003ePlumbing\u003c\/th\u003e\u003ctd\u003e1\u0026nbsp;½\u0026nbsp;in. connections. A set of bypass valves is mandatory to isolate the heat pump and adjust the flow. With a pump of 2\u0026nbsp;HP or more, TTI requires an adjustable automatic bypass valve.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003ePipe length\u003c\/th\u003e\u003ctd\u003e10\u0026nbsp;m (about 33\u0026nbsp;ft) maximum between the pool and the unit. TTI recommends insulating these pipes to maximize water heating.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eFlow and pressure\u003c\/th\u003e\u003ctd\u003eBetween 57 and 170\u0026nbsp;L\/min (15 to 45\u0026nbsp;US gal\/min), at 30\u0026nbsp;PSI maximum. Outside these values, damage is not covered by the warranty.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eChlorinator and salt chlorine generator\u003c\/th\u003e\u003ctd\u003eThe outlet of any salt chlorinator or chlorine or bromine feeder must be located after the heat pump. Otherwise, the warranty does not apply.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003eStart-up\u003c\/th\u003e\u003ctd\u003eStart the filtration pump before the heat pump. The fan runs for 3\u0026nbsp;minutes before the compressor starts.\u003c\/td\u003e\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp class=\"afi-f-note\"\u003eTTI requires the unit to be installed and serviced by a professional technician. Incorrect installation is not covered by the warranty, and a repair made by a technician not authorized by TTI voids it. Remember to \u003ca class=\"afi-f-lnk\" href=\"https:\/\/ttifab.com\/chauffe-piscine-enregistrement-de-garantie\/\" target=\"_blank\" rel=\"noopener\"\u003eregister your warranty online\u003c\/a\u003e on the TTI website.\u003c\/p\u003e\n\n  \u003ch2 class=\"afi-f-h2\"\u003eWinterizing and maintenance\u003c\/h2\u003e\n  \u003cp class=\"afi-f-p\"\u003eIn Quebec, the heat pump must be winterized when the pool is closed: water left in the heat exchanger can freeze and damage it, and \u003cstrong\u003efreezing is not covered by the warranty\u003c\/strong\u003e. TTI describes the following steps:\u003c\/p\u003e\n  \u003ctable class=\"afi-f-tbl\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003e1. Stop\u003c\/th\u003e\u003ctd\u003eTurn off the heat pump.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003e2. Cut the power\u003c\/th\u003e\u003ctd\u003eSwitch off the breaker and close the valves.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003e3. Disconnect the water\u003c\/th\u003e\u003ctd\u003eUnscrew the water inlet and outlet connections.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003e4. Drain\u003c\/th\u003e\u003ctd\u003eRinse the heat exchanger with tap water, then blow out the remaining water with compressed air or a wet\/dry vacuum.\u003c\/td\u003e\u003c\/tr\u003e\n      \u003ctr\u003e\u003cth scope=\"row\"\u003e5. Protect\u003c\/th\u003e\u003ctd\u003eIf the unit stays outside all winter, cover it with a waterproof protective cover.\u003c\/td\u003e\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n  \u003cp class=\"afi-f-p afi-f-sub\"\u003eIn spring: check and adjust the water quality, keep the breaker off while you reinstall the unit level and reconnect the plumbing, clean the filter and check the water return, then restore power. Always start the filtration before the heat pump.\u003c\/p\u003e\n  \u003cp class=\"afi-f-p\"\u003eDuring the season, keep the coil free of leaves and paper. Clean the unit with a mild household cleaner and rinse it with a garden hose at low pressure, never with a solvent or gasoline.\u003c\/p\u003e\n\n  \u003ch2 class=\"afi-f-h2\"\u003eFrequently asked questions\u003c\/h2\u003e\n  \u003cdiv class=\"afi-f-faq\"\u003e\n    \u003cdiv class=\"afi-f-qa\"\u003e\u003cspan class=\"afi-f-q\"\u003eIs the Stratos-50 enough for my pool?\u003c\/span\u003e\u003cspan class=\"afi-f-a\"\u003eAs a guide, TTI intends it for 15 and 18\u0026nbsp;ft above-ground pools and for 10 × 20\u0026nbsp;ft and 12 × 24\u0026nbsp;ft in-ground pools. The right choice also depends on the desired temperature, wind exposure, the length of season you want and whether you use a solar cover. Give us this information and we will confirm the model.\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-qa\"\u003e\u003cspan class=\"afi-f-q\"\u003eDoes it work with a saltwater pool?\u003c\/span\u003e\u003cspan class=\"afi-f-a\"\u003eYes, its heat exchanger is titanium. However, TTI requires the outlet of the salt chlorinator, or of any chlorine or bromine feeder, to be located after the heat pump; otherwise, the warranty does not apply. Also keep the water well balanced; in fact, when restarting in spring, TTI asks you to check and adjust the water quality.\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-qa\"\u003e\u003cspan class=\"afi-f-q\"\u003eIs it noisy?\u003c\/span\u003e\u003cspan class=\"afi-f-a\"\u003eWhile it is heating, you can hear its fan and compressor, as with any heat pump; it shuts off once the temperature is reached. TTI's documents do not give a consistent value for this model, so we would rather not quote a figure. AFI tip: in addition to the required clearances, preferably install it away from bedroom windows and the neighbour's property line.\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-qa\"\u003e\u003cspan class=\"afi-f-q\"\u003eHow much does it cost to run?\u003c\/span\u003e\u003cspan class=\"afi-f-a\"\u003eIt depends on the desired temperature, the weather, the size of the pool and above all whether you use a cover. The COP gives an idea of efficiency: according to the TTI spec sheet, with air at 26.7\u0026nbsp;°C and 80% humidity, it delivers about 6\u0026nbsp;times more energy as heat than it consumes in electricity (COP 6.1), and about 4\u0026nbsp;times more with air at 10\u0026nbsp;°C and 63% humidity (COP 4.0). A solar cover or insulating cover, which TTI recommends, limits heat loss and therefore operating hours.\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-qa\"\u003e\u003cspan class=\"afi-f-q\"\u003eCan it heat in spring and fall?\u003c\/span\u003e\u003cspan class=\"afi-f-a\"\u003eYes, as long as the air is above 7\u0026nbsp;°C: it is designed to operate between 7 and 35\u0026nbsp;°C. Its output drops as the air cools: according to the TTI spec sheet, 33,500\u0026nbsp;BTU\/h with air at 10\u0026nbsp;°C, compared with 47,500\u0026nbsp;BTU\/h at 26.7\u0026nbsp;°C, at the same 63% humidity. Below 7\u0026nbsp;°C, it shuts off on its own and displays code P7: this is not a malfunction.\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-qa\"\u003e\u003cspan class=\"afi-f-q\"\u003eDoes it work with my variable-speed pump?\u003c\/span\u003e\u003cspan class=\"afi-f-a\"\u003eYes. According to TTI, it is designed to run at reduced flow with modern pumps. However, the flow passing through it must stay between 57 and 170\u0026nbsp;L\/min (15 to 45\u0026nbsp;US gal\/min): outside this range, damage is not covered by the warranty. While heating, choose a pump speed that meets this minimum flow, then adjust the flow with the bypass valves.\u003c\/span\u003e\u003c\/div\u003e\n    \u003cdiv class=\"afi-f-qa\"\u003e\u003cspan class=\"afi-f-q\"\u003eStratos-50, Stratos-65 or Stratos-80?\u003c\/span\u003e\u003cspan class=\"afi-f-a\"\u003eThe Stratos-50 is the smallest of the three. The Stratos-65 and Stratos-80 are better suited to a larger pool, a property exposed to wind or a longer season. Their actual output, amperage and breaker differ from those of the 50: see their product page or ask us for advice before choosing.\u003c\/span\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 class=\"afi-f-h2\"\u003eManual and video\u003c\/h2\u003e\n  \u003cdiv class=\"afi-f-video\"\u003e\u003ciframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/O0pDysVYv10?rel=0\" title=\"Preparing your heat pump for winter, by TTI FAB\" loading=\"lazy\" allow=\"accelerometer; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n  \u003cp class=\"afi-f-p afi-f-sub\"\u003eHow to prepare a pool heat pump for winter, by TTI FAB (2\u0026nbsp;min\u0026nbsp;39\u0026nbsp;s). The demonstration covers TTI heat pumps in general.\u003c\/p\u003e\n  \u003cdiv class=\"afi-f-cta-b\"\u003e\n    \u003ca class=\"afi-f-btn afi-f-btn1\" href=\"https:\/\/ttifab.com\/wp-content\/documents\/2027\/TTI_Feuillet_Stratos_Inverter_Fr_2027.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTTI Stratos 2027 spec sheet (PDF, in French)\u003c\/a\u003e\n    \u003ca class=\"afi-f-btn afi-f-btn2\" href=\"https:\/\/ttifab.com\/documentation-thermopompes-de-piscines\/\" target=\"_blank\" rel=\"noopener\"\u003eManuals and warranties on the TTI website\u003c\/a\u003e\n  \u003c\/div\u003e\n  \u003cp class=\"afi-f-note\"\u003eFor water flow, rely on the TTI warranty range rather than on the table in this spec sheet: 57 to 170\u0026nbsp;L\/min (15 to 45\u0026nbsp;US gal\/min). On TTI's Documentation page, the Stratos manuals are sorted by edition (2026, 2020, 2018, 2017 and an older edition). To find out which one matches your unit, email or call us with the information on its nameplate.\u003c\/p\u003e\n\n  \u003cdiv class=\"afi-f-cta\"\u003e\n    \u003cspan class=\"afi-f-cta-t\"\u003eNot sure 50,000\u0026nbsp;BTU will be enough?\u003c\/span\u003e\n    \u003cspan class=\"afi-f-cta-x\"\u003eSend us your pool's dimensions, its type (above-ground or in-ground), whether you use a solar cover and the space available in your electrical panel: we will confirm whether the Stratos-50 is right for you or whether you should go with the Stratos-65 or Stratos-80.\u003c\/span\u003e\n    \u003cspan class=\"afi-f-cta-b\"\u003e\n      \u003ca class=\"afi-f-btn afi-f-btn1\" href=\"mailto:commercial@aquafibreinnovation.ca\"\u003eEmail us\u003c\/a\u003e\n      \u003ca class=\"afi-f-btn afi-f-btn2\" href=\"tel:+14188710658\"\u003e(418) 871-0658\u003c\/a\u003e\n    \u003c\/span\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.afi-fiche{max-width:850px;margin:20px auto;padding:26px;background:#fff;border:1px solid #e8e8e8;border-radius:14px;box-shadow:0 8px 26px rgba(11,114,185,.07);font-size:17px;line-height:1.6;color:#1e1e1e;}\n.afi-fiche .afi-f-lede{font-size:18px;color:#333;margin:0 0 22px;}\n.afi-fiche .afi-f-p{margin:0 0 12px;}\n.afi-fiche .afi-f-sub{margin:10px 0 14px;font-size:14px;color:#666;}\n.afi-fiche strong{color:#0b72b9;font-weight:600;}\n.afi-fiche a.afi-f-lnk{color:#0b72b9;font-weight:600;text-decoration:underline;}\n.afi-fiche .afi-f-h2{font-size:24px;line-height:1.25;font-weight:700;color:#0b72b9;margin:30px 0 14px;padding-bottom:10px;border-bottom:1px solid #dde6ee;}\n.afi-fiche .afi-f-specs{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 22px;}\n.afi-fiche .afi-f-spec{flex:1 1 130px;background:#f5f9fc;border:1px solid #d6e8f5;border-radius:12px;padding:15px 10px;text-align:center;}\n.afi-fiche .afi-f-num{display:block;font-size:26px;font-weight:700;color:#0b72b9;line-height:1.15;}\n.afi-fiche .afi-f-lbl{display:block;font-size:12px;color:#666;margin-top:5px;text-transform:uppercase;letter-spacing:.6px;}\n.afi-fiche .afi-f-note{display:block;margin:14px 0 0;padding:13px 15px;border-left:3px solid #e08600;background:#fff8ef;border-radius:0 10px 10px 0;font-size:15px;line-height:1.55;color:#6b4a12;}\n.afi-fiche .afi-f-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;}\n.afi-fiche .afi-f-card{display:flex;align-items:flex-start;gap:12px;padding:15px;background:#f5f9fc;border:1px solid #d6e8f5;border-radius:12px;}\n.afi-fiche .afi-f-card:last-child:nth-child(odd){grid-column:1\/-1;}\n.afi-fiche .afi-f-chk{position:relative;flex:0 0 24px;width:24px;height:24px;margin-top:2px;border-radius:7px;background:#0b72b9;}\n.afi-fiche .afi-f-chk::after{content:\"\";position:absolute;left:8px;top:5px;width:5px;height:10px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg);}\n.afi-fiche .afi-f-ct{display:block;font-weight:700;font-size:16px;color:#0b72b9;margin-bottom:3px;}\n.afi-fiche .afi-f-cx{display:block;font-size:15px;line-height:1.5;color:#444;}\n.afi-fiche table.afi-f-tbl{width:100%;table-layout:auto;border-collapse:collapse;font-size:16px;border:1px solid #e5e5e5;border-radius:12px;overflow:hidden;margin:0;}\n.afi-fiche table.afi-f-tbl th,.afi-fiche table.afi-f-tbl td{text-align:left;padding:12px 15px;border-bottom:1px solid #e5e5e5;vertical-align:top;background:#fff;}\n.afi-fiche table.afi-f-tbl th{color:#0b72b9;font-weight:600;width:38%;background:#f5f9fc;-webkit-hyphens:auto;hyphens:auto;overflow-wrap:break-word;}\n.afi-fiche table.afi-f-tbl tr:last-child th,.afi-fiche table.afi-f-tbl tr:last-child td{border-bottom:0;}\n.afi-fiche .afi-f-video{position:relative;width:100%;padding-top:56.25%;border-radius:12px;overflow:hidden;background:#000;}\n.afi-fiche .afi-f-video iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0;}\n.afi-fiche .afi-f-faq{display:grid;gap:12px;}\n.afi-fiche .afi-f-qa{padding:14px 16px;background:#f5f9fc;border:1px solid #d6e8f5;border-radius:12px;}\n.afi-fiche .afi-f-q{display:block;color:#0b72b9;font-weight:700;font-size:16px;margin-bottom:4px;}\n.afi-fiche .afi-f-a{display:block;font-size:15px;line-height:1.55;color:#444;}\n.afi-fiche .afi-f-cta{display:block;margin-top:30px;padding:20px 22px;background:#f5f9fc;border:1px solid #d6e8f5;border-radius:12px;}\n.afi-fiche .afi-f-cta-t{display:block;font-size:18px;font-weight:700;color:#0b72b9;margin-bottom:4px;}\n.afi-fiche .afi-f-cta-x{display:block;font-size:15px;color:#555;margin-bottom:14px;}\n.afi-fiche .afi-f-cta-b{display:flex;flex-wrap:wrap;gap:10px;}\n.afi-fiche a.afi-f-btn{display:inline-block;padding:11px 20px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none;}\n.afi-fiche a.afi-f-btn1{background:#0b72b9;color:#fff;border:1px solid #0b72b9;}\n.afi-fiche a.afi-f-btn2{background:#fff;color:#0b72b9;border:1px solid #b9d9ef;}\n@media (min-width:990px){\n.afi-fiche .afi-f-spec{box-sizing:border-box;flex-basis:calc(50% - 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