Worcester DANESMOOR FS12/18 Installation And Servicing Instructions page 19

Fig. 20. Semi Gravity Control Set.
NOTE: When using a Worcester programmer set the pin on the rear of the programmer to 'Pumped'.
Remove link 1 to 3 and link 2 to 4
Room thermostat
N
ENL
L N E E N 1 2 3
7 8 9 10
4 5 6
Burner Socket
19
Pump
Hot Water Valve
11 12
V4043H1106
L
N
E
Cylinder
Thermostat
Optional
Worcester
Programmer
Honeywell