Grant vortex condensing oil boiler manual

Isolating valve s in fuel supply line closed. Check and reset as necessary. Fire valve closed. Check and clean as necessary.

Fuel line filter is blocked. Oil supply line is air locked. Vent oil supply line at pump. Excessive combustion air. Reset burner air damper and check combustion. Fault with burner. Burner fires but smoke visible from flue or high smoke number. Insufficient combustion air supply to burner. Check flue terminal is clear balanced flue. Check room ventilation is adequate conventional flue.

Check condition of burner fan. Check air damper setting on burner. Incorrect or faulty nozzle fitted. Check nozzle size and type and replace if necessary. Fuel pressure too high. Check fuel pressure and adjust as necessary. Check as for high smoke number above. Burner cycles On and Off. Contaminated combustion air balanced flue. Check the flue terminal is unobstructed.

Insufficient oil flow to burner due to restriction in supply line. Connect vacuum gauge to pump and check pump vacuum.

Check for blockage in filter, fire valve, valves or pipe and rectify. Fumes and puffing on starting. Flue is blocked. Check flue is clean and unobstructed — rectify as necessary.

Insufficient flue draught. Check flue draught and improve flue as necessary. Flue pipe or liner is too large or existing stack is unlined. Check that an extract fan is not pulling combustion gases from burner. Flame slow to stabilise on starting. Check as for high smoke number. Fuel pressure too low. Oil leak in supply line or burner. Check all joints and flexible hose for leaks. Combustion fume smells. Leak around boiler cleaning door. Check gasket, re-tighten nuts or replace gas.

Burner not correctly fitted on mounting flange. Remove and re-fit burner ensuring correct fitting. Leakage around flue connection. Check and re-seal flue as necessary. Overheat thermostat operating. Faulty boiler thermostat. Check and replace as necessary. Check and rectify as necessary. Faulty overheat thermostat. No water flowing from hot tap. Mains water supply is not connected to cold water inlet of boiler. One or more isolating valves, stop cocks, etc. Open all valves in pipework to and from boiler.

The cold water isolating valve in the boiler is closed. Open valve situated above pump in front of boiler. There is a blockage or blockages in the pipework. No hot water operation. Hot tap is not connected to hot water outlet of boiler. Insufficient flow of water through boiler. Boiler cold water and hot water connections reversed. Thermostatic mixing valve incorrectly fitted. Check hot and cold inlets are connected correctly.

Pump is not operating in hot water mode. Check operation of diverter valve. Check pump is free to rotate and is vented. Check for V supply to pump. Check electrical continuity of pump microswitch. Check wiring continuity from pump to microswitch. Diverter valve microswitch es faulty. Check switch continuity, replace if faulty. Diverter valve microswitches not operated.

Check diverter valve diaphragm. Diverter valve seized. Remove, dismantle and clean. Diverter valve diaphragm failed. Replace diaphragm or complete diverter valve. Low water temperature at tap. Flow of water through boiler too high. Reduce flow and check water temperature. Boiler thermostat incorrectly set. Thermostatic mixing valve incorrectly set. Check continuity and replace if necessary. Energy management. MagOne magnetic filter. Can't find what you're looking for?

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