DOMINA 80 E
48
7.06 Air pressure switch
(fig. 38)
• Isolate electricity
• Remove outer case (two screws bottom rear corners)
• Open room sealed department
• Remove the two screw "A" fixing 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.
A
B
C
D
7.07 D.H.W. temperature sensor or Central Heating Temperature Sensor
(fig. 39)
• 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 figure 39
• Disconnect electrical connection to the sensor
• Drain the boiler
• Unscrew the sensor
• Replace in reverse order
C.H. sensor Water pressure switch D.H.W. sensor
Safety valve
7.11 Water Pressure Switch
(fig. 39)
• Isolate electricity and water supplies
• Remove outer case (two screws bottom rear
corners)
• Remove the two securing screws and
lower control panel
• Identify the switch from figure 39
• Disconnect electrical conne note
positions to the switch
• Drain the boiler
• Unscrew the sensor
• Replace in reverse order
7.12 Safety Valve
(fig. 39)
• 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 fig. 39
• Drain the boiler
• Release the outlet union to the valve and
undo the valve union connection
• Remove the valve outlet fitting
• Replace in reverse order
Fig. 38
Fig. 39