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Many of the newer boilers will require a change in the

Many of the newer boilers will require a change in the venting of the boiler the new boilers may require pvc, cpvc, polypropylene, or stainless steel new venting will increase the project cost caution should be used when venting the new boilers, as the flue temperatures may be beyond the temperature limits of the venting material if the heating system requires 180 degree water at the outdoor design temperature, this may exclude pvc from the venting material as it is only rated for 140 degrees.

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