Lennox ECOLEAN EAC 0091 S Installation, Operating And Maintenance page 20

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