Re: Are Sierra thermostats OK?

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September 9, 2016 at 5:43 am #43658
collectorinspector
Participant
    quote amuller:

    I just got a Sierra 18-3543 stat to replace a stuck one that is presumably original or at least OEM. The Sierra unit does not have the vent or bleed slot identified in manuals as a design feature. does this matter?

    You will be fine not having a bleed.

    None of mine have one. There may be a small bypass in the head casting near the thermostat somewhere…..or is that the 6Hp.

    Good job in asking as thermostats are important.

    Cheers

    BnC