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83055116 • 1/2016-05
Installation and Operating Instructions
G
as burner WG20.../1-C ZM-LN (W-FM 25)
5 Operation
O
perating level
The current stepping motor position and/or blower speed can be displayed in the
operating level (10 ).
Displaying the gas butterfly valve setting:
u Press [G] key.
Displaying the air damper setting:
u Press [L/A] key.
OFF function
u Press [Enter], [L/A] and [G] keys simultaneously.
a Immediate lockout with error 18h.
Operating status
The operating status of the combustion manager can also be displayed, which helps in
troubleshooting the burner’s fault.
u Press and hold [-] and [+] simultaneously for approx. 3 sec.
a The combustion manager changes to operating display. The display shows the
current operating status with a number.
Back to standard display:
u Press and hold [-] and [+] simultaneously for approx. 3 sec.
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