LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)

Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)

LENNOX
Brand: LENNOX
SKU: 54M89
Availability: In Stock

Ships same day if ordered by 12 pm
$294.86
$294.86
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Description

Product Description

Lennox 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.

  • Rated for operation to 30 Deg F (-1 Deg C); net weight approximately 0.7 lb
  • Includes S11 low ambient pressure switch (factory set at 450 psig cut-in / 240 psig cut-out), K58 relay, wiring, and Schrader depressor tee
  • Designed for expansion valve (TXV) metering systems and HFC-410A refrigerant; requires field-provided freezestat and crankcase heater per installation notes

Product Highlights

Low 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

Product Information

Standard Information

  • Brand: LENNOX
  • Manufacturer Part Number: 54M89
  • Country of Origin: Switzerland
Technical Specifications
Brand
Lennox
MPN
54M89
Manufacturer Model
LB-101123B
Function
Low ambient control kit to maintain head pressure in low-temperature conditions
Operating Ambient Range
Down to 30 Deg F (-1 Deg C)
Net Weight
0.7 lb
Dimensions
6 in x 4 in x 4 in
Kit Contents
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
S11 Pressure Switch Settings
Factory set at 450 psig cut-in / 240 psig cut-out
Compatible Refrigerant
HFC-410A
Compatible Metering Device
Expansion valve (TXV) only; not for piston-type or capillary tube systems
Additional Required Parts
Field-provided freezestat (S49) and compressor crankcase heater (per manufacturer notes)
Country of Origin
Switzerland
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)

LENNOX

Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)

$294.86
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)
LENNOX Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)

LENNOX

Lennox 54M89 Low Ambient Kit 30 Deg F (LB-101123B)

$294.86

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