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Lwco

happydave
happydave Member Posts: 79
in THE MAIN WALL
Piped and wired in a Burnham pin7 with a hydrolevel cg400 yesterday, turn power on , leds on lwco flash for a quarter of a second then nothing. 24 volts in and out of lwco. No leds, doesn't even start to cycle, bad lwco? bad ground? Going back this morning to trouble shoot and finish up, any ideas before I dig into it. Thanks Dave

Comments

  • Steamhead
    Steamhead Member Posts: 17,459
    edited January 2017
    If you have 24V on the burner output terminal, and the boiler water is above the probe, the LWCO is OK. I see in the pic the pressuretrol and stack damper are not hooked up, were they hooked up when you tried to fire it?

    How about the blocked-flue switch?

    The Independence boilers have isolation relays- the thermostat operates the relay which closes the burner circuit. Is this relay working?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • happydave
    happydave Member Posts: 79
    Ha, yeah all connected, just wanted to show the piping. Why no leds? Power should leave the transformer to lwco then to the relay or the other way around? Didn't dig into it as they had supplement heat and I long day. Thanks
  • happydave
    happydave Member Posts: 79
    Sorry about the 3" coupling but my die head can't thread that short.

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