{"product_id":"lennox-54m89-low-ambient-kit-30-deg-f-lb-101123b","title":"Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eLennox 54M89 is a low ambient control kit (LB-101123B) rated for operation down to 30 Deg F (-1 Deg C). The kit is a field-installed accessory for compatible Lennox heat pump and furnace systems that preserves head pressure and enables mechanical cooling at low ambient temperatures by cycling the outdoor fan while allowing continuous compressor operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated for operation to 30 Deg F (-1 Deg C); net weight approximately 0.7 lb\u003c\/li\u003e\n  \u003cli\u003eIncludes S11 low ambient pressure switch (factory set at 450 psig cut-in \/ 240 psig cut-out), K58 relay, wiring, and Schrader depressor tee\u003c\/li\u003e\n  \u003cli\u003eDesigned for expansion valve (TXV) metering systems and HFC-410A refrigerant; requires field-provided freezestat and crankcase heater per installation notes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Highlights\u003c\/h4\u003e\n\u003cp\u003eLow ambient control kit for maintaining head pressure to prevent evaporator freezing; includes pressure switch and relay; rated to 30 Deg F for TXV HFC-410A systems\u003c\/p\u003e\n\u003ch3\u003eProduct Information\u003c\/h3\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: LENNOX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 54M89\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: Switzerland\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: Lennox\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMPN\u003c\/strong\u003e: 54M89\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Model\u003c\/strong\u003e: LB-101123B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunction\u003c\/strong\u003e: Low ambient control kit to maintain head pressure in low-temperature conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Ambient Range\u003c\/strong\u003e: Down to 30 Deg F (-1 Deg C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet Weight\u003c\/strong\u003e: 0.7 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions\u003c\/strong\u003e: 6 in x 4 in x 4 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKit Contents\u003c\/strong\u003e: S11 low ambient pressure switch, K58 relay, four 20-inch wires with female quick connects, four wire nuts, two #10-16 x 5\/8-inch screws, Schrader depressor tee with seal cap\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eS11 Pressure Switch Settings\u003c\/strong\u003e: Factory set at 450 psig cut-in \/ 240 psig cut-out\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Refrigerant\u003c\/strong\u003e: HFC-410A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Metering Device\u003c\/strong\u003e: Expansion valve (TXV) only; not for piston-type or capillary tube systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdditional Required Parts\u003c\/strong\u003e: Field-provided freezestat (S49) and compressor crankcase heater (per manufacturer notes)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: Switzerland\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"LENNOX","offers":[{"title":"Default Title","offer_id":67660089229618,"sku":"54M89","price":294.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6416bb7f5907ae41bafddf18657e4c82.gif?v=1790468538","url":"https:\/\/voomisupply.com\/products\/lennox-54m89-low-ambient-kit-30-deg-f-lb-101123b","provider":"Voomi Supply","version":"1.0","type":"link"}