4 ZONE HEATING SYSTEM
When connecting the a Brandon cooker to a 4 -
zoned heating system (i.e. separate time switches
and thermostats for domestic hot water and four
central heating zones), the domestic hot water and
one zone
must
be controlled directly from the
cooker enabling the inter thermostat to
operate if necessary. All other zones can
be controlled from the cooker where a
constant live supply must be connected to
the
time clocks
only (see figure 27).
Under no circumstances can other supply
sources be connected directly to the cooker.
4 ZONE HEATING SYSTEM
22
EAR
TH
EAR
TH
POST
MAINS
NEUTRAL
LIVE
FLUE
F
AN
INTERST
A
T
PUMP
L
PUMP
N
NEUTRAL
HEA
TING
T
imer
DHW
T
imer
NO
DHW
T
imer
Boiler
Run
Brandon
TERMINALS
WIRING
CENTRE
PERMANENT
(FUSED)
LIVE
PUMP
If
wires
are
a
different
colour
c
o
d
e
,
p
le
a
s
e
re
fe
r
to
th
e
manufacturers
instructions.
L641A
Cyl.S
tat
T6360B
Room
S
tat
T6360B
Room
S
tat
T6360B
Room
S
tat
Motorised
V
alve
Domestic
Hot
W
ater
Motorised
V
alve
WET
HEA
TING
ZONE
1
Motorised
V
alve
WET
HEA
TING
ZONE
2
Motorised
V
alve
WET
HEA
TING
ZONE
3
c
1
2
3
2
3
2
2
3
-
M
M
M
M
Blue
Blue
Blue
Brown
Brown
Brown
Orange
Grey
Grey
Grey
Grey
Brown
S
PLAN
WIRING DIAGRAM
USING
SAME
TIMER
FOR
ALL
CENTRAL
HEA
TING
ZONES
Fig.
28
1
2
4
5
6
7
8
9
10
1
1
12
13
3
