MAINE ENERGY SYSTEMS AutoPellet Air TOUCH 17, Installation Manual

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Plenum / Warm air delivery and Return air 31
7.6 Plenum / Warm air delivery and Return air
7 7..6 6..11 P Plle en nu um m // W Wa arrm m A Aiirr D De elliiv ve erry y a an nd d R Re ettu urrn n A Aiirr c co on nn ne ec cttiio on n llo oc ca attiio on nss
1 The warm air outlet is the upper opening at the rear of the furnace.
The opening size is 12 x 20 inches.
2 The return air is connected to the blower assembly. Normally this is
done after the blower assembly is connected to the furnace itself, at
the lower opening at the rear of the furnace.
7 7..6 6..2 2 M Miin niim mu um m ssiiz ze e o off W Wa arrm m A Aiirr D De elliiv ve erry y P Plle en nu um m
From the rear of the furnace, and for the first 43 inches of the warm air plenum, the minimum clearance to
combustibles is 2 inches.
After 43 inches, as measured from the attachment point on the rear of the furnace, the warm air plenum no
longer is required to have any clearance to combustibles.
THE MAIN WARM AIR PLENUM COMING FROM THE
FURNACE SHALL BE NO SMALLER THAN 12 BY 20
INCHES.
ONLY INSTALL THIS FURNACE AS AN ADD-ON IF ALL
DUCT WORK IS IN GOOD CONDITION AND MEETS
ALL REQUIREMENTS OF BOTH FURNACES AND THE
CHIMNEY IS IN GOOD OPERATING CONDITION.
DO NOT USE DUCT ELBOWS HAVING AN INSIDE RA-
DIUS OF LESS THAN 6 INCHES.
Installation Manual AutoPellet Air Furnace 17 — 28