5.6
Thermoelectric Circuit
The Thermocouple Circuit is fitted with an interrupter so that if the air flow is not proved on high speed the circuit is
incomplete and the flame supervision device will operate. In the case of intermittant pilot failure or permanent pilot
failure the termocouple circuit can be checked with a British Gas Multimeter or suitable Millivolt Meter to determine
if the pilot failure is due to poorthermocouple output, high resistance through Relay-l contact orfaultythermoelectric
valve. (See Section 2.9 Fig. 1).
The thermocouple output measured at the Printed Circuit Board terminals should be greater than 12 millivolts.
The millivoltage drop through the relay (i.e. terminal to terminal) should not be greater than 4 millivolts.
5.7
Handing Over
Hand all instructions to the user or purchaser and instruct in the correct and safe operation of the appliance.
Explain to the user or purchaser that if the appliance is not used for long periodsit is recommended thattheappliance
is drained, this is particulary important during the winter months (see servicing instructions for procedure to drain
appliance).
Finally, advise the user or purchaser that, for continued efficient and safe operation of the appliance it is important
that servicing is carried out annually to the manufactures recomendations by a C.O.R.G.I. registered person.
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