Condensing HW Boiler

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I was doing a comparison report between an existing boiler and a
condensing hw boiler using the EEM Wizard, and I noticed that the
condensing hw boiler had electric space heat associated with it while
the other boiler did not. Is anyone aware of where the electric space
heat is coming from when the entire building to be heated using gas.

Any information on this would be greatly appreciated.

Thank you,

David Dowling

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Joined: 2011-09-30
Reputation: 0

This is due to the electronics associated with the boiler, mainly the
combustion air fan. In the boiler dialog, there should be a number for EIR,
which represents the electric use of the boiler. This should be very low in
comparison to the amount of gas used.

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Karen

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Joined: 2011-09-30
Reputation: 200