Refilling The System; Other Checks - Lochinvar HERALD HCB46CE Installation Manual

19.7

REFILLING THE SYSTEM

1. Close the drain valve.
2. Open the cold-water inlet valve from the header tank or pressurisation unit to boiler system.
3. Working systematically towards the highest point in the system, open all bleed valves and allow any
trapped air to escape.
4. Follow the lighting instructions as detailed in
5. Check for water leakage and airlocks, remedy as necessary.
19.8

OTHER CHECKS

19.8.1
AIR PRESSURE SWITCH LINES
During the annual service, check the lines to/from the air pressure switch to ensure:
1. They are correctly fitted
2. There is no damage
19.8.2 RELIEF VALVE
At least once a year, the pressure relief valve should be checked to ensure correct operation. To check the valve, the
manual override lever should be operated several times. The valve should seat properly and operate freely.
If water does not flow, drain the boiler, remove the inoperative valve and inspect for obstructions or corrosion. Replace
with a new valve of equivalent size as necessary.
19.8.3 FLUE SYSTEM
Examine the exhaust and air intake system at least once a year. Points of inspection are as follows:
1. Check for obstructions and/or deterioration of flue piping and terminal. Replace immediately where
needed.
2. Check the terminal for any foreign material and remove as necessary.
3. Check all flue system connections for leakage and reseal as required.
4. Check that ventilation grilles comply with current regulations.
19.8.4 CONDENSATE NEUTRALISATION KIT
If fitted the condensate neutralisation kit will require replacing after 12 months of operation. Please refer to the item
specific instructions for further details.
Section 17.4.3.
Check all connections
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