Worcester Greenstar Danesmoor Utility Regular ErP 12/18 Installation, Commissioning And Servicing Instruction Manual page 15

A1
P1
K1
Fig. 13 System boiler system layout
Filling primary sealed systems
NOTICE: FILLING THE SYSTEM
▶ The system must not be filled with artificially
softened water.
• 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.
SYSTEM FILL
Heating
return
Hose union
SV
Temporary hose
CV = Check Valve
SV = Stop Valve
SYSTEM MAKE UP
Heating
AA
return
CV
SV
Fill point
Greenstar Danesmoor Utility ErP and Utility System
6720808218-109.1Wo
Mains
supply
CV CV
SV
Test point
AA = Auto Air vent
CV = Check Valve
Make up
vessel
1000 mm (39 in)
above the highest
point of the system.
ErP - 6 720 813 286 (2014/09)
Pre-Installation
15