Owner manual

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3-90-70741R13_05/13

Installation

Place the boiler a minimum of 18” from a wall. The ue pipe must be at least 18” from anything combustible. The rear of

the hopper should be a minimum of 36” from the wall. The boiler should be placed on a non-combustible oor. Secure all

chimney connector pipe joints with a minimum of 3 sheet metal screws.

Draft Test Procedure

Attach a draft meter to the vent pipe on the boiler side of the barometric damper (if installed). With a re established, the

chimney draft should be between -.04 and -.06 inches of Water Column. If the ue draft exceeds these readings, install and

adjust the barometric damper accordingly.

DO NOT operate if the ue draft exceeds -.10 inches Water Column ( -24.9 Pa).

Next, remove the allen head set screw from the center of the rebox door and attach your draft meter. The rebox draft

should be -.04 to -.05 in W.C. Adjust the combustion blower restrictor plate, closed to increase the draft or open to decrease

rebox draft.

Clearances

Restrictor Plate

Combustion Blower