Worcester DANESMOOR FS12/18 Installation And Servicing Instructions page 12

Fig. 10. 3 Port Valve Control Set (Fully Pumped Sealed System).
Fascia mounted twin channel
Room
programmer
Thermostat
Boiler
Fig. 11. 2 Port Valve Control Set (Open Vent Fully Pumped System).
Feed and
Vent Cistern
Primary cold
feed (15mm min.)
Primary cold
feed (15 mm)
Fascia mounted twin channel
programmer
Optional Feed and Vent Supply
150mm
(max)
Feed Vent
(15mm) (22mm)
Automatic
air vent
Domestic hot
water cylinder
Safety valve
Pressure
gauge
Expansion
Vessel
To system filling device (see Fig.14)
Automatic bypass valve to be fitted
where thermostatic radiator valves
are fitted on all radiators
Heating vent
Heating vent
(22 mm min)
(22mm min.)
Hot Water
Domestic hot
water cylinder
S.H.
Pump
Boiler
Automatic bypass valve to be fitted where thermostatic radiator
valves are fitted on all radiators
T.R.V
Diverting
valve
Pump
S.H.
T.R.V
valve
Central Heating
valve
Thermostat
Radiator
12
N.B. A drain cock should be
installed at the lowest point of
the heating circuit
Radiator
S.H. – Minimum static head 1m (3ft) mea-
sured from the top surface of the appli-
ance or highest point in the heating sys-
tem to the water level in the feed and
expansion tank
Room
N.B. A drain cock should be
installed at the lowest point of
the heating circuit