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Posted by Noon-Air on February 21, 2007, 7:48 pm
did you check for proper venting and make sure that the vent pipes are
clean/clear??
> 1. there are no flame roll out safeties
> 2. replace wiring,
> 3, checked over unit gas pressure, cfm, td across heatexchanger all ok,
>
>
>>
>>> We just installed two HFG4005MRLN2062 (MUA) after running or about
>>> three weeks both units ignition wires melted to a bare wire, Wire
>>> rated 205 degree C. Both units were running with proper gas pressures
>>> and td across heat exchanger, The only thing I can think of was the
>>> unit down drafted clauseing the flame to roll down and melt wiring,
>>> anyone had the happen to them or any other ideas??
>>
>> Call a *competent*, licensed, insured, professionally trained, HVAC
>> technician to....
>> 1) find out why the rollout safeties failed
>> 2) find out why the flame rollout occured in the first place
>> 3) correct the problems and replace the burnt wiring
>> 4) correctly set up the heaters to operate as they were designed
>>
>>
>
>
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