Harman XXV Installation & Operating Manual page 13

Space heating appliance fired by wood pellets

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Fig. 14

Fig. 15

Venting

#5 installing into an existing fireplace

chimney (uS and canada)

This method can be done with or without a flue

liner. Without a liner, the damper area must be sealed

off with a steel plate. Kaowool, mineral wool or an

equivalent non-combustible insulation is recommend-

ed on top of the steel plate to minimize condensation.

In this method a cap should also be installed on the

chimney to keep out rain.

Some places in the US and Canada require that

the vent pipe extend all the way to the top of the

chimney. Per ULC S628.

Be sure to use approved pellet vent pipe fittings.

Seal pipe joints with silicone or aluminum tape in

addition to the sealing system used by the manu-

facturer. Pipe size should be increased to 4" using

this method.

#6 installing into an existing

chimney (uS and canada)

This method provides excellent venting for normal

operation. This method also provides natural draft

in the event of a power failure.

In this method a 4 inch liner is installed the entire

length of the flue. Whether using a rigid or flexible

liner, a cap should be installed on the chimney to

keep out rain.

XXV Pellet Stove

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