Glow-worm icon 23t, Инструкция для пользователя, по установке и обслуживанию

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Servicing instructions
TO REPLACE DOMESTIC HEAT EXCHANGER
— Drain down heating circuit of boiler as described previously.
— Drain down hot water circuit of boiler as follows:
— From below boiler, close cold water inlet
isolating valve.
— Open a hot tap to drain hot water circuit.
— Remove clip (A) and pull off microswitch
assembly
— Undo connections (B), (C), (D) and (F) on
3 way valve
— Grasp 3 way valve and lift upwards releas-
ing ‘O’ ring joint (E)
— Remove 3 way valve and domestic heat
exchanger assembly from boiler.
Important: Take care not to drip water into
pub housing when removing assembly.
— Fit replacement heat exchanger in reverse
order to removal.
— Open isolating valves on flow and return connections, refill, vent and pressurise boiler. Check
for leaks.
— Open cold water isolating valve. Check for leaks.
TO REPLACE THERMISTOR
— Locate thermistor clipped onto flow pipe behind pump.
— Pull off clip from flow pipe.
— Remove electrical connections from thermistor.
— Fit replacement thermistor in reverse order to removal.
Note: 1) No heat sink compound is required.
2) The polarity of the connections is not important.
TO REPLACE OVERHEAT THERMOSTAT
— Locate overheat thermostat on left hand side of main heat exchanger at rear.
— Remove electrical connections from overheat thermostat.
— Unscrew and remove two screws securing overheat thermostat to heat exchanger.
— Fit replacement overheat thermostat in reverse order to removal.
Note: 1) No heat sink compound is required.
2) The polarity of the connections is not important.
A
F
B C
E G D