TEMPRA 30
34
7.05 Air pressure switch
(fi g. 31)
• Isolate electricity
• Remove outer case (two screws bottom rear corners)
• Open room sealed department
• Remove the two screw "A" fi xing air pressure switch
• Disconnect electrical leads "B"
• Remove pressure sensing tubes (white=D; Red=C)
• Note relevant positions of all connections and
replace in reverse order.
Fig. 30
7.04 Gas valve
(fi g. 30)
• Isolate gas and electricity supplies
• Remove outer case (two screws bottom rear corners)
• Remove the two securing screws
and lower control panel
• Disconnect electrical connections from valve ("A")
• Disconnect plastic tube "C"
• Loosen the connection "D" on gas pipe and the gas
inlet connection of the boiler "E"
• Remove the two fi xing screw "E" below gas valve
• Slide out gas valve
• Remove four fi xing screw "F" on top of
the valve and disconnect the gas pipe
• Remove bottom connection from gas valve.
• Fit top + bottom gas connections to the new gas valve
and replace in reverse order
7.06.1 Central Heating Temperature Sensor
(fi g. 32)
• Isolate electricity and water supplies
• Remove outer case (two screws bottom rear corners)
• Remove the two securing screws and lower control panel
• Identify the sensor from fi gure 32
• Disconnect electrical connection to the sensor
• Drain the C.H.
• Unscrew the sensor
• Replace in reverse order
7.06.2 Safety Valve
(fi g. 32)
• Isolate electricity and water supplies
• Remove outer case (two screws bottom rear corners)
• Remove the two securing screws and lower control panel
• Identify valve from fi g. 32
• Drain the boiler
• Release the outlet union to the valve and undo the valve union connec-
tion
• Remove the valve outlet fi tting
• Replace in reverse order
Fig. 31
D
C
A
F
E
A
B
C
D
Fig. 32
C.H. sensor
Safety valve
