Control Panel Wiring Diagram - Combi V3 And Combi Max; Functional Flow Wiring Diagram - Combi V3 And Combi Max - Grant Combi 70 V3 User's Installation Manual

12.1

Control panel wiring diagram - Combi V3 and Combi Max

E
Mains supply
(use 2 pole isolator
N
with power 'on'
indicator)
L
Frost
thermostat
(if fitted)
RD
Note: If room thermostat is
fitted, remove link 6 to 7 (red)
R/S link (red)
and connect room thermostat
in its place
Note: Remove link
Y
8 to 9 (yellow) if
timer is fitted
'Plug in' timer socket
M
1 2 3 4 5 6
BL
RD RD RD
1 2 3 4 5 6
'Plug in' timer
24 hr mechanical
or 7 day timer
Colour code: BLK Black, BL Blue, BR Brown, RD Red, Y Yellow G/Y Green/Yellow, OR Orange
12.2

Functional flow wiring diagram - Combi V3 and Combi Max

12 - WIRING DIAGRAMS
1 G/Y
E
2
N
BL
OR
L
3
RD
4
RD
5 BLK
Y
6
7
RD
RD
8
9
RD
Boiler
terminal
block 2 Pump
flow
Heating
switch
switch
2A
C
3A 1A
RD
RD
OR
Combi V3, Combi Max and Vortex Combi models
Pressure switch
neon (amber)
OR
Y
RD
Boiler
Burner
on/off
Electonic
switch
flow
c/w neon PCB board
switch
1A
2A
Flow switch
Burner live
No No
C
4B
5B
Live
BL
BL
BL
BL
Chassis earth
to bolt in boiler
casing
G/Y
Chassis earth
to bolt in boiler
casing
G/Y
G/Y
10
BL
11 BL
N
BR
12
G/Y 13 G/Y
BL
BL
14
RD
BR
15
16
Y
17
Boiler terminal
block 2
BR
G/Y
Overheat stat
Limit
stat neon (red)
2
C
Neutral
RD
RD
RD
RD
Burner
E
L
Pump
Pressure
switch
49