Reznor VCT Unit Installation Manual - Manual (Page 44)

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Step 5: Fit the new air pressure switch ensuring
the tubes are connected as shown below.
Step 6: Re-connect wiring.
Step 7: Test product and close access door.
7.3 Gas Valve Replacement
Step 1: Remove the burner assembly as
described in the Servicing section.
Step 2: Open the rear access door.
Step 3: Remove the two securing screws
(arrowed) from the base of the injector tube,
noting earth terminal connection.
Step 4: Remove the gas valve wiring
connections, noting their positions.
Step 5: Remove the four screws (arrowed)
securing the gas valve inlet plate to the burner
housing and remove plate.
Step 6: Remove gas valve rearwards as shown.
Step 7: The jet carrier and gas inlet can now be
detached from the gas valve.
Step 8: Replace gas valve
Step 9: Re-connect wiring.
Step 10: Set burner pressure.
Step 11: Test product and close access door.