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14.7
OTHER CHECKS
14.7.1
RELIEF VALVES
At least once a year, the temperature and pressure relief valve and safety valve should be checked to ensure that
they are in operating condition. To check each valve, lift the lever or turn the screw cap at the end of the valve
several times. The valve should operate freely and seat properly.
If water does not flow, remove and inspect for obstructions or corrosion. Replace with a new valve of the
recommended size as necessary.
14.7.2
FLUE SYSTEM
Examine the exhaust and ventilation 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 re-seal as required.
4.
Check for sufficient flue draught.
5.
Check that ventilation grilles comply with current regulations.
14.8
TTB DEVICE
There is a thermostat that detects a down-draught situation in the flue. This is an auto-reset thermostat but, the
cause of activation must be investigated and remedial work carried out before allowing the equipment to operate
again. This device shall not be put out of operation due to the seriousness of untimely interference.
If required, this device should only be replaced with a genuine Lochinvar part.
14.9
FAULT FINDING
MINI COPPER-FIN SERIES FAULT FINDING GUIDE
Situation
Corrective Action
No Power
Check circuit breaker/Fuses
Equipment will not start ignition sequence
Check that the pilot flame has extinguished.
Check power is available at terminals R & W.
Check power is available at terminals X & B.
Check setting of all three thermostats.
Check power is available at terminal 1 of the sequence
controller.
Check that flame failure reset button has been pushed.
Flame failure
Pilot assembly or electrodes dirty or eroded.
Pilot assembly insulation on cables cracked/broken.
Pilot assembly electrodes bent out of position.
Check for low gas pressure.
Check faulty ignition sequence controller.
Short cycling of burners
Check that temperature differential across heat exchanger is
correct.
Improper cross-lighting of burners
Check for low main burner gas pressure.
Check for low inlet supply gas pressure.
Check for excessive flue draught.
Check burner injectors are aligned correctly.
Flue gas spillage
Check Flueways in heat exchanger are clear.
Check ventilation requirements.
Check that flue is clear.
Check that flue is sized correctly.
Summary of Contents for Mini Copper-Fin MCB136CE
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