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4.7 Electrical connection
1. Check polarity of the connection plugs ➀ and ➁.
Wiring diagram see Ch. 5.5.
2. Plug 4 pole connection plug ➀ for ratings controller
into combustion manager.
single stage operation: fit plug with link according to
wiring diagram
two stage operation: connect plug to heat exchanger
according to wiring diagram
3. Plug in 7 pole connection plug ➁ of the appliance
control.
4. Plug cables ➂ and ➃ leading from the burner housing
into the gas pressure switch and multifunction
assembly (plugs are coded) and tighten screws.
Connection to the mains supply should be carried out to
the wiring diagram relevant for the type of unit.
Notes for Austria
Electrical isolation having a minimum of 3 mm contact gap,
acting on all poles, must be fitted adjacent to the burner.
Possibilities are:
• Switch (without micro-contacts) with required
separation characteristics
• Circuit breaker
• Contactor
• Screw in type fuse with clearly recognisable
designation
Electrical connection
➀ 4 pole connection plug for ratings controller
➁ 7 pole connection plug of appliance control
➂ Connection plug multifunction assembly (W-MF)
➃ Connection plug gas pressure switch
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