Grant Aerona 3 HPID10R32, Instructions Manual, Page: 23 / 100

Section 6: Electrical Page 23
6 Electrical
6.1 WIRING CENTRE
! WARNING !
Electric shock may cause serious personal injury or death.
All electrical work must be undertaken by a competent
person. Failure to observe this legislation could result in an
unsafe installation and will invalidate all guarantees.
All electrical connections made on-site are solely the
responsibility of the installer.
All wiring connections are made to the Terminal PCB (refer to
Figure 6-1) and terminal block (refer to Figure 6-2) inside the heat
pump.
To access these connections, remove the wiring cover at the right
hand end of the heat pump.
Terminal block
Cable clamp
ON
Reset
SW.
Pump
SW.
OFF
Terminal
PCB
3
4
2
1
Remote
Controller
1
2
3
4
5
6
7
17
18
19
20
21
22
23
Humidity
Sensor
COM
DHW Remote
Contact
ON/OFF
or
EHS Alarm
GND
24VAC
COM
Control
DHW
T.probe
OUTDOOR
T.probe
BUFFER
T.probe
Mix water
T.probe
3-way
mixing
valve
RS485
+
-
Dehumidifier
Alarm
Pump1
Pump2
Neutral
N.C.
Neutral
EHS
Heating
Cooling
mode
output
Phase
Signal
3-way
valve
8
9
10
11
12
13
14
Dual Set
Point
Control
Heating
Cooling
mode
Flow
switch
Night
mode
Low
tariff
RS485
GND
45
46
47
48
49
50
31
32
24
25
26
27
28
29
30
15
16
N
41
42
43
44
51
52
Electric
heater
Figure 6-1: Terminal PCB