33
4 ZONE HEATING SYSTEM
When connecting the Heatranger 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 (
).
Under no circumstances can other supply sources be
connected directly to the cooker.
EA
RT
H
EAR
TH
POST
MAINS
NEUTRAL
LIVE
FLUE
FA
N
INTERS
TA
T
PUMP
L
PUMP
N
NEUTRAL
HEA
TING
Ti
mer
DHW
Ti
mer
NO
DHW
Ti
mer
Boiler
Run
Heatranger TERMINALS
WIRING CENTRE
PERMANENT (FUSED)
LIVE
PUMP
If
wires
are
a
different
colour
code,
please
refer
to
th
e
manufacturers
instructions.
L641A
Cyl.
St
at
T6360B Room
St
at
T6360B Room
St
at
T6360B Room
St
at
Motorised
Valve
Domestic
Hot
Wa
ter
Motorised
Va
lve
WE
T
HE
AT
ING
ZONE
1
Motorised
Va
lve
WE
T
HEA
TING
ZONE
2
Motorised
Va
lve
WE
T
HE
AT
ING
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
1
2
4
5
6
7
8
9
10
11
12
13
3
Fig. 8.20
S PLAN WIRING DIAGRAM
USING SAME TIMER FOR ALL
CENTRAL HEATING ZONES
DESN 518003
