Lennox EcoLean EAC0091S, Installation Operating & Maintenance Manual

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19
HPD2
HPD1
End pressure defrost circuit 2
End pressure defrost circuit 1
Liquid
receiver
Restrictor Check valve
Scroll compressor
Water
inlet
Water
outlet
Plate exchanger
Filter drier
Expansion
valve
Coil
Fan motor
Hot gas injection valve (option)
cooling mode
Liquid
receiver
Restrictor Check valve
Scroll compressor
Water
inlet
Water
outlet
Plate exchanger
Filter drier
Expansion
valve
Coil
Fan motor
Hot gas injection valve (option)
cooling mode
Restrictor
Hot gas injection valve (option)
cooling mode
Coil
Fan motor
Liquid
receiver
check valve
Filter drier
Expansion
valve
(Hot gas by-pass
heating mode.
Low ambient
temperature -15ºC (option))
HGBP
SVR (solenoid valve)
SV
(Hot gas by-pass
heating mode.
Low ambient
temperature -15ºC (option))
Scroll compressor
SV2
4 - way valve
4 - way valve
4 - way valve
SV1
1.- GENERAL CHARACTERISTICS
1.8.- PIPING DRAWINGS
HEAT PUMP UNITS EAR 0472S TO 0812S
HEAT PUMP UNITS EAR 0091S TO 0431S
CH
Crank case heater
Low pressure switch heating cycle
Low pressure switch cooling cycle
6
Piping probe circuit 2 (fan speed regulation and defrost
heat pump units)
Piping probe circuit 1 (fan speed regulation and defrost
heat pump units)
Water outlet probe (anti-freeze protection)
Water inlet probe (water inlet regulation)
Flow switch (option in standard version)
Pressure gauge
High pressure switch circuit 2
High pressure switch circuit 1
High pressure switch
Low pressure switch heating cycle circuit 2
Low pressure switch cooling cycle circuit 2
Low pressure switch heating cycle circuit 1
Low pressure switch cooling cycle circuit 1
HGBP
SVR 1 (solenoid valve)
HGBP
SVR 2 (solenoid valve)