Old Lennox OHR4-80 furnace stack switch


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Old 09-17-12, 12:25 PM
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Old Lennox OHR4-80 furnace stack switch

I have an old lennox furnace that is using an Type 670 stack switch, model number 1129. The switch is 115V, 7.4 Amps, continuous ignition, 24 volt thermostat circuit, 1000 degree max Helix. I cannot find this switch anymore and need to replace it. Does anyone know if I can use a Honeywell RA117A1047 oil burner control with 75 second lockout, line voltage or 24V, 7.4 amps and 1000 degree max helix? It will fit in the same stack opening

Thanks
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Old 09-17-12, 04:08 PM
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Yes, it will work but unless you are absolutely destitute I strongly advise you to retrofit your furnace/oil burner with a cad cell primary control. Those stack switches were garbage even when new.
 
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Old 09-22-12, 08:04 AM
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