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Looking for good Steam heating thermostats and vaporstats.

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The Steam Whisperer
The Steam Whisperer Member Posts: 1,215
in Strictly Steam
I've used the Honeywell thermostats (usually the 8000series, but sometimes the 6000) for many years, but quality has gone down the toilet, along with the Vaporstats. I like to be able to program the CPH setting to 1, 2, or 3 for the system. Also, Vaporstats are now lasting maybe 2 heating seasons before they go bad.

Just seeing what the rest of you guys are using.
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  • 109A_5
    109A_5 Member Posts: 1,385
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    Look on eBay for some 'New Old Stock' units. Sometimes some good deals versus the cost of new.

    Vaporstat;

    If you liked the 16 Oz Vaporstat to tame an oversized boiler I would try.

    Dwyer Series A3000 Photohelic® Pressure Switch/Gage
    A3030 0-30 WC

    "Two phototransistor actuated,
    DPDT relays are included for low/high limit control. Easy-to-adjust set point indicators
    are controlled by knobs located on the gage face (accessible opening case after
    de-energizing instrument). Set points can be interlocked to provide variable dead
    band which is ideal for control of fans, dampers, etc. "


    With the HH relay unit I believe you just install a jumper wire for the deadband operation (electrical emulation of a vaporstat switch).

    Sadly, for a customer I guess you just replace with the same type device, I'm not a lawyer.
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System

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