Fig 8.3a
Page 35
8:4 HEATING SYSTEM
During routine servicing, the system water should be "topped up" if necessary, using the Filling Loop when the
system is cold. Refer to 7:5 Filling the system.
The following items should be checked on an annual basis at the very least.
1) System Pressure
The system Pressure should be checked periodically and increased as necessary using the Filling Loop.
Filling should be carried out on a cold system so that the pressure can be increased to the original cold fill
design pressure (indicated by the red pointer on the system Pressure Gauge).
The pressure Gauge should be watched carefully during filling and Mains Isolating Valve opened slowly.
2) System Draining
The Boiler as well as the system, is under pressure and before disconnecting any components, the system
Page 47 of 57
Installation & maintenance manual for Camray 5 Combi External Boilers
14/04/2005
file://D:\PL61500\PL61500.htm
