Argo AG4HP061PH - Page 42

Air-to-water Heat Pump
41
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
Other thermal by 220VAC
X24
Field supplied water pump
X25
Reserved
X26
Reserved
X27
2-way valve 1 is normally open
X28
2-way valve 1 is normally closed
X29
Water pump of the water tank
X30
Reserved
X31
Field supplied 3-way valve 1
X32
Reserved
X33
Electric three-way valve 2 open
X34
Electric three-way valve 2 closed
CN18
Build-in water pump signal(PWM)
CN19
Back-up water pump signal(PWM)-field supply
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)
CN16
10K temperature sensor (leaving water for the optional electric heater)
CN16
Reserved
CN8
Remote room temperature sensor
CN9
Water tank temperature sensor
CN7
Reserved
CN6
Reserved
CN5
Reserved
CN20
Thermostat
CN21
Detection to welding protection for the optional electric heater 1
CN22
Detection to welding protection for the optional electric heater 2
CN23
Detection to welding protection for the water tank electric heater
CN24
Gate-control detection
CN25
Flow switch
CN26
Reserved
CN1
Communication with outdoor unit
CN3
Anode
CN4
Communication with control panel