37
Air-to-water Heat Pump
Silk Screen
Introduction
AC-L
Live wire of power supply
N
Neutral wire of power supply
X3
To the ground
X20
E-heater of water tank
X21
E-heater 1
X22
E-heater 2
X23
Assistant heat by 220VAC
X24
Reserved
X25
Electric heater for the plate-type heat exchanger
X26
Reserved
X27
Electric magnetic 2-way valve 1 is normally open
X28
Electric magnetic 2-way valve 1 is normally closed
X29
High-power load control
X30
High-power load control
X31
Electric magnetic 3-way valve 1 is normally open (reserved)
X32
Electric magnetic 3-way valve 1 is normally closed (reserved)
X33
Electric magnetic 3-way valve 2 is normally open (water tank)
X34
Electric magnetic 3-way valve 2 is normally closed (water tank)
CN30
Signals 1, 2, 3, 4, power supply 5
CN31
Signals 1, 2, 3, 4, power supply 5
CN18
Interface to the variable-frequency water pump
CN19
Interface to the variable-frequency water pump
CN15
20K temperature sensor (inlet water)
CN15
20K temperature sensor (outlet water)
CN15
20K temperature sensor (refrigerant liquid line)
CN16
20K temperature sensor (refrigerant vapor line)
SPLIT TYPE