Grant Products HPAW155 - Manual (Page 24)

20
Electrical
8.5 Heat Pump Wiring Diagram
8 Electrical
The Main Connections you have to make
230 Vac
Compressor
Heater
4-way
valve
Expansion Valve
Disconnect
Electric Element
for Bivalent
Switched Output
Ret Gas Sensor
Ext Temp Sensor
Coil Temp Sensor
Dis Gas Sensor
Ret Temp Sensor
N
Compressor
Fan
motor
Pump
Relay
KM2
3kW
Electric
Element
Orange
Red
Blue White
Blk
Power Supply
Terminal
3 Connection points for installer
ATC Controller
Socket S-Plan Controls
Connections
3 2 1 3 2 1
12
11
10
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
C
R
S
24 Vac
Fuse
Relay KM1
Low pr
essur
e
switch
High pr
essur
e
switch
ATC controller
socket
S-Plan controls
connections
Power supply
terminal
Figure 8-7: Heat pump connection diagram for 3kW electrical element
Figure 8-8: Location of connections in control panel