APR 2018
21
Hot Water Energy Storage
Unvented Cylinders
GB & NI
Installation & Maintenance Instructions for an unvented
hot water cylinder with external thermal expansion
WIRING DIAGRAMS (CONTINUED)
Wiring Centre
Boiler
Terminal 1
Permanent Live
L
Terminal 3
Permanent Neutral
N
Terminal 5
Permanent Earth
E
Terminal 10
Switched Live To Boiler
SL B
Terminal 12
Switched Live To Pump
L P
CONNECTED TO BOILER WITH PUMP OVER-RUN FACILITY
1
2
E
N L 1
2 3
Red Plug - Heating 1
3
4
5
6
Wiring Diagram for Twin Zone Heating and Hot Water
systems using boiler to control pump
7
8
9
10
11
12
BL BR GR OR
BL BR GR OR
B1 Br Gr Or
L N E SLB LP
Yellow Plug - Heating 2
Blue Plug - Water
Boiler with over run
Pump
B1
Br
E
N L 3 4 5 0
W Y G/Y
G/Y
Green Plug
Two Channel Programmable
Room Stat With DHW Control
Programmable
Room Stat
Table 5:
Instruction for connection to a boiler with pump
over-run facility, such as Ideal Logic Heat
1. Disconnect brown pre-wired pump flex from position 10
2. Reconnect brown pre-wired pump flex to position 12
3. Connect 5 core cables between boiler and wiring control
centre to following positions: