Grant QR Range User Manual

Section 5: ElectricalPage 18
Figure 5-2: Grant QR integrated indirect heat pump cylinder wiring diagram
5.9 WIRING DIAGRAMS
The wiring diagram shown below demonstrates how the electrical components supplied with the Grant QR integrated indirect
heat pump cylinder are wired from the factory.
* in order to achieve independent time control for the DHW zone, the link between terminals 33 and 34 of the EP001 wiring centre must
be removed before connecting your chosen time control option. For detailed information on the operation of the Grant EP001 wiring
centre, please refer to Grant UK DOC 0176.
2
GRANT
EP001 - Wiring centre.
Issue 5
Mains
Power
LED8
LED1
LED2 LED3
LED4 LED7
C2 C1
VAR2
VAR1
LED6
LED5
S1
Hot Water
Priority
RL1 RL2
RL3
RL4
F1 1A
F2
1A
F3
1A F4 1A F5
3.15A F6
5A
F8
1AF7
6.3A
DANGER HIGH VOLTAGE |
All Fuses
230Vac Anti-surge
1 2 3 4
5
8 9 10 11 14
15
16 17 20 21 22 23
N L N L N L
34 35 36 376 7 12
13
18 19 24
L N
33 38
3940414344454647 424849505152
L L L L L N L L L L L N L L L L L N L L L L L N L L L L L N
Spare
Clock Stat
Pump
Clock Stat
Pump
Clock Stat
Pump
Clock Stat
Pump
Clock
Cyl
Stat
Pump
Heating
Hot water
HMI
INOUT
NC2 C2 NO2 NO1 C1 NC1 OP2 OP1
26 27 28 2925 30 31
32
Motor
HW
2-Port Zone Valve
- DHW -
Motor
HTG
2-Port Zone Valve
- Zone 2 -
Do not
connect
Motor
HTG
2-Port Zone Valve
- Zone 1 -
Do not
connect
Do not
connect
Do not
connect
Do not
connect
Do not
connect
ON
OFF
Digital
Dual Thermostat
L N
C1
N L
Hot Water
Immersion
Heater
N L
LOAD
SUPPLY
N L
Greenbrook T205-C
Immersion Timer
(indepently switched and
fused at 13A)
Brown
Blue
Orange
Grey
Orange
Grey
Orange
Grey
G/Y
G/Y
Brown
Blue
Brown
Blue
G/Y
Grey
Black
Blue
Brown
Brown
Blue
G/Y
Link*

Grant QR Range Specifications

General

Brand	Grant
Model	QR Range
Category	Heat Pump
Language	English