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What size transformer is generally used on a heating only gas furnace?
Wiki User
∙ 12y ago
usually 40 va
Wiki User
∙ 12y ago
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What is the use of reactor transformer in furnace?
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A transformer does many things.
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There is probably no C terminal because on a heat only application it normally does not have to go anywhere outside the furnace, so it is hard wired to all the various components. Find the wire from the transformer that goes to the R terminal (maybe on the rear of the terminal board). The other LOW VOLTAGE (secondary) wire leaving the transformer is C and you can cut into it to do whatever it is you are doing. Be sure you are not fooling with either of the high voltage transformer (primary) inputs. If you can read a schematic look on there and it will tell you the wire colors you are looking for and where the terminations can be found.
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What type of furnace do you have?electric
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Ruud furnace only blows cold air no heat?
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