Room thermostat
Heating Valve. Honeywell V4043H
Burner Socket
Optional
Worcester
Programmer
Hot Water Valve
Honeywell V4043H
L
N
E
Pump (supplied in boiler)
N
E N L
HEAT SYSTEMS
HEATING
ADVANCE
OFF
TWICE
ONCE
ON
OFF
TWICE
ONCE
ON
SELECT
LOCK SET?
YES
SELECT
PM
TUE
HOT
WATER
ADVANCE
L N E E N 1 2 3 4 5 6
Cylinder
Thermostat
Orange
Blue
Blue
Grey
Brown
Blue
Brown
Brown
Orange
Grey
Blue
Green/Yellow
Green/Yellow
Brown
Green/Yellow
7 8 9
1112 13 14 15
10
18
Fig. 18. Honeywell ‘S’ Plan.
NOTE:
When using a WHS programmer set the switch on the rear of the programmer to ‘P’.
Remove link 1 to 3 and link 2 to 4 and make link 3 to 4
Grey
White
Blue
Brown
Room thermostat
Pump (supplied in boiler)
N
E N L
HEAT SYSTEMS
HEATING
ADVANCE
OFF
TWICE
ONCE
ON
OFF
TWICE
ONCE
ON
SELECT
LOCK SET?
YES
SELECT
PM
TUE
HOT
WATER
ADVANCE
Burner Socket
Optional
Worcester
Programmer
Cylinder
Thermostat
C
1
2
Mid Position Valve
Honeywell V4073A
E
N
L N E E N 1
2
3 4
5
6
7 8 9
1112 13 14 15
10
Blue
Brown
Green/Yellow
Blue
Grey
Orange
Orange
Grey
Green/Yellow
Blue
Brown
White
Brown
Blue
White
Fig. 19. Honeywell ‘Y’ Plan.
NOTE:
When using a WHS programmer remove the orange wire from terminal 9 and
connect to terminal 6. Set the switch on the rear of the programmer to ‘P’.
Remove link 1 to 3 and link 2 to 4 and make link 3 to 5.
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