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Tekmar 518 Thermostat

kwgrant2
kwgrant2 Member Posts: 1
in Strictly Steam

I have a Tekmar 508 thermostat that died. The Tekmar 518 is the replacement. Unfortunately, the wiring doesn't exactly line up. The photo below with the wires shows the current 508 configuration. The photo without the wires shows the 518.

I think the transposition is this: red wire to 518 W1 slot; white wire to 518 Rh slot; blue wire to 518 R slot; and green wire to 518 C slot. Can anyone confirm? Thank you.

Thermostat As Is.jpg
Thermostat New.jpg

Comments

  • HVACNUT
    HVACNUT Member Posts: 6,329

    Same thing.

    R- Blue wire

    C- Green wire

    Rh- Red wire

    W1- White wire

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