Instruction manual

USER INSTRUCTIONS

CONDENSING BOILOES WITH STORAGE - TG05A095.A0306

6.3 Maintenance for unvented components

It is essential that the unvented hot water components have a regular maintenance programme. It is Radiant’s

recommendation that this be carried out in conjunction with the annual boiler service.

 The

STORAGE CYLINDER and CENTRAL HEATING PRESSURE RELIEF VALVES should be manually operated for a

period of not less than 5 seconds each to:

i. Check the flow of water through the valve and the final discharge route to the drain.

ii. Check the relief valves reseat property.

 The

DHW EXPANSION VESSEL pre-set pressure should be checked as follows,

i. Close main stopcock;

ii. Relieve pressure from system by opening a hot tap

iii. Check pressure of vessel using an accurate type pressure gauge;

iv. Adjust if necessary to 3.5 bar (with car foot pump);

 The

INLET CONTROL GROUPS FILTER should be checked for blockages as follows,

i. Close main stopcock;

ii. Relieve system pressure by opening a hot tap;

iii. Disconnect and remove pressure-reducing valve from the inlet group;

iv. Clean inlet filter; replace it and test;

v. Open main stopcock;

 Check the

SACRIFICIAL ANODE located at the top of the storage cylinder by using the easy test nipples as

follows:

i. Unscrew the red cap located on the top of the anode;

ii. If water is released the anode requires replacing;

iii. If no water is released then the anode is still serviceable ensure the red cap is screwed down tightly and noted

on the service record as checked.