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Servicing; Disassembly Of Each Part - Andrews FASTflo WH42 Installation Manual, Operation And Maintenance Manual

Continuous flow wall hung balanced flue heaters for natural gas and lpg.
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Important Notes
To ensure the continued efficient and safe operation of the boiler it is recommended that it is checked
and serviced at regular intervals. The frequency of servicing will depend upon the particular installation
and usage, but in general once a year should be enough.
It is the Law that any servicing is carried out by a competent person.
When replacing a part on this appliance, use only spare parts that you can be assured conform to the
safety and performance specification that we require. Do not use reconditioned or copy parts that have
not been clearly authorised by NORITZ.
Before commencing with a service or replacement of parts the boiler should be isolated from the electrical
supply and water supply and the gas supply should be turned off at the gas service cock.
All routine servicing requirements can be achieved by the removal of the front panel only. Remove the
four screws on the front panel and lift off.
For access inside the appliances screwdriver can be used.
To remove chassis front.
Unless stated otherwise any part removed during servicing should be replaced in the reverse order to
Servicing should always include the removal of any debris from the condensate pipe and siphon.
After completing any servicing of gas carrying components, ALWAYS test for gas soundness and carry
out a functional test of the controls.
It is not necessary for the burner parts and heat exchanger parts to be cleaned up.

Disassembly of each part

1. Removing the transformer
(1) Remove the 2 quick fasteners and remove
the bypass pipe.
Page 39
05.9.26, 7:48 PM


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