Worcester Greenstar Danesmoor Utility Regular ErP 25/32

Pre-Installation
Greenstar Danesmoor Utility
ErP
and Utility System
ErP
- 6 720 813 286 (2014/09) 15
Fig. 13 System boiler system layout
Filling primary sealed systems
• Where the system volume is more than 180 litres at 0.5 bar or
exceeds 2.65 bar at maximum heating temperature an extra
expansion vessel (B) must be fitted as close as possible to the
appliance in the central heating return.
• Pressurise the extra expansion vessel (B) to the same figure as the
expansion vessel built into the appliance (system boilers).
• Filling the system must comply with one of the methods shown in the
figure below.
• The filling point must be at low level and must never be a permanent
connection to the mains water supply.
• Filling loops must be WRAS approved.
NOTICE: FILLING THE SYSTEM
▶ The system must not be filled with artificially
softened water.
6720808218-109.1Wo
K1
P1
A1
SYSTEM FILL
CV = Check Valve
SV = Stop Valve
SV SV
Test point
Temporary hose
Hose union
CV
CV
Heating
return
Mains
supply
SYSTEM MAKE UP
AA = Auto Air vent
CV = Check Valve
SV
CV
AA
Make up
vessel
Heating
return
1000 mm (39 in)
above the highest
point of the system.
Fill point
6720644743-08.1Wo