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UNIT HEATER
Fig 9.1 Features of the S.I.T. Nova valve for Manual Ignition Versions
9.5 User Controls for Manual Ignition Versions
9.5.1 Multifunctional Gas Valve
The S.I.T.Nova multifunctional gas valve fitted to all manual ignition unit heaters is shown in Fig 9.1.
and is used to control the gas supply whilst lighting the pilot flame by hand.
Follow the instructions in 9.6 to light the pilot and operate the main burner.
WARNING
The electrical isolator must not be used for turning the heater off
other than in an emergency. This will prematurely turn off the distribution fan and will
seriously shorten the life of the heat exchanger, invalidating the warranty.
Such action may also cause a fire hazard.
Press in and hold
to light pilot
Press in and turn
to start
Press in and turn
to run burner
Press in and
turn to stop
Press in and turn
to stop
OFF Position START Position BURNER RUN
Position
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