20
HPD1
HPD2
End pressure defrost circuit 1
End pressure defrost circuit 2
Plate exchanger
Water
inlet
Water
outlet
Scroll compressor
Scroll compressor
Coil
Coil
Fan motor
Fan motor
Filter
drier
Liquid receiver
Restrictor
Check valve
Expansion
valve
Hot gas injection valve (option)
cooling mode
SV 1
SVR 1 (solenoid valve)
Scroll compressor
HGBP
Filter
drier
Liquid receiver
Restrictor
Check valve
Expansion
valve
Hot gas injection valve (option)
cooling mode
SV 2
(Hot gas by-pass
heating mode.
Low ambient
temperature -15ºC
(option))
HGBP
(Hot gas by-pass
heating mode.
Low ambient
temperature -15ºC
(option))
SVR 2
(solenoid valve)
4-way
valve
4-way
valve
1.- GENERAL CHARACTERISTICS
1.8.- PIPING DRAWINGS
HEAT PUMP UNITS EAR 1003S TO 1303S
CH2
HPR11
HPR12
HPR21
HPR22
CH3
CH1
Crank case heater
6
Piping probe circuit 2 (defrost temperature)
Piping probe circuit 1 (defrost temperature)
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
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
Crank case heater
Condensing pressure control ON/OFF fan motor
Condensing pressure control. Low/high speed
Condensing pressure control. Low/high speed
Condensing pressure control ON/OFF fan motor
Crank case heater
ST1
ST2
FS
S
S
S
LP22
LP21
CH 3
CH 2
LP12
LP11
CH 1
ST6
HPD1
HPR21
HP2
HPR22
HPD2
ST3
HPR11
HP1
HPR12
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