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fields cas4 wiring

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happydave
happydave Member Posts: 79
in Thermostats and Controls
Have a Burnham 204 that customer wants cas-4 , doesn't need but wants. Looking thru schematic and just can't figure where tt wiring goes into. Anyone have a simple drawing how it's wired into system.

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  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Theres a number of scenarios, which one do you have?
    You're probably page 8, figure 8
    http://www.fieldcontrols.com/pdfs/46284600.pdf

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  • happydave
    happydave Member Posts: 79
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    Steve , page8 is it but do I just splice into the red and white off the vent damper?
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    No, splice implies stripping the insulation, and tying all 3 wires together. Note the dotted lines (wire supplied by you)
    In reality you would remove the red/white from the vent damper and run the 2 wires to the T1 & T2 on the wiring block. Then get another 2 wire and run it from T2 & T3 on the block to the ignition module TR & TH respectively.

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