15
14
Honeywell ‘C’ plan - gravity hot water and pumped heating
V4043H
Boiler
stat
Boiler
burner
Cooker
programmer
DHWS Cylinder
stat L641A
or equivalent
DHWS Cylinder
primary motorised
valve -28mm V4043H
or equivalent
Pump
(2.5amp max)
Room stat
T6306B
or equivalent
Cooker
burner
Boiler
status
neon
Cooker
status
neon
Boiler
Limit stat
Hot water
1
E
C
2
E
C
2
1
E
C
2
E
C
2
1
2
E N
NE
N E
L
3
2
1
C
1
2
3
4
5
6
7
8
9
10
11
12
G
R
E
E
N
/Y
E
L
W
H
IT
E
Internal wiring
External wiring
Cooker
Limit stat
Mains
E
supply
L
(3 AMP N
fuse)
Cooker
stat
Heating/
Hot water
B
R
O
W
N
B
L
U
E
G
R
E
Y
O
R
A
N
G
E
Honeywell ‘C’ Plan - Fig.6
5
4
3
2
1
L
N
E
6
HORSTMANN
H37XL
Cooker
programmer
Cooker
status
neon
1
E C
2
E C
2
NE
1
2
3
4
5
6
7
8
9
10
11
12
Cooker
Limit stat
Mains
E
supply
L
(3 AMP N
fuse)
Cooker
stat
4
3
2
1
L
N
E
HORSTMANN
C17
Model OC (COOKER ONLY) - Fig.6a
Boiler
stat
Boiler
burner
Cooker
programmer
Cylinder stat
L641A or equivalent
DHWS Cylinder primary
motorised valve
-28mm V4043H
or equivalent
Heating circuit
motorised valve
V4043H
or equivalent
Room stat
T6306B
or equivalent
Cooker
burner
Boiler
status
neon
Cooker
status
neon
Boiler
Limit stat
Hot water
C
1
E
C
2
E
C
2
1
E
C
2
E
C
2
1
2
3
1
EN
NE
L
E
N
2
1
2
3
4
5
6
7
8
9
10
11
12
B
R
O
W
N
B
L
U
E
G
R
E
Y
O
R
A
N
G
E
G
R
E
E
N
/Y
E
L
Internal wiring
External wiring
Cooker
Limit stat
Mains
E
supply
L
(3 AMP N
fuse)
Cooker
stat
Heating/
Hot water
Honeywell ‘S’ plan - fully pumped hot water and heating
B
R
O
W
N
B
L
U
E
G
R
E
Y
O
R
A
N
G
E
G
R
E
E
N
/Y
E
L
Pump (2.5amp max)
V4043H
V4043H
Honeywell ‘S’ Plan with heating and hot water timed seperately - Fig.5a
5
4
3
2
1
L
N
E
6
HORSTMANN
H37XL
Cooker
burner
Note:
For a gravity primary and
pumped heating system without a
zone valve, cylinder thermostat or
room thermostat, link terminals 7 &
10 and wire pump live to terminal 8