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It is recommend that the boiler and flue/combustion

air system be inspected and maintained annually by

a qualified technician.

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To gain access to the inside of the unit, first remove

the control panel cover escutcheon by grasping it on

both sides and pulling directly outward towards you

and up. Remove any front panel screw(s) and remo-

ve the front panel by pulling the top out towards you

and then lifting up to free the bottom from the moun-

ting pins. Remove the top cover by simply pulling it

up. Remove the electrical terminal block protection

plate by removing the screws in the rear and li ftin g.

Remove the control panel cover screws and remove

the control panel cover.

The water can be bled from the unit by opening the

drain-cock on the base of the boiler shell using the

tool supplied.

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•Remove the screws (B) from the cast-iron boiler

shell cover (C)

•Remove the flue outlet baffle (D)

•Remove the combustion baffles (E)

•Clean the inner walls of the boiler shell

•Reassemble all the parts the way they were re-

moved, positioning the flue outlet (D) with its

centering screw (P) towards the front of the boi-

ler, then positioning the boiler shell cover (C)

arrow marker opposite the centering screw (P)

•Replace the screws (B) in the boiler shell cover.

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•Remove the wing nut (F) from the condenser

top cover (G) and remove the cover

•Remove the condenser access plug (7)

•Clean the condenser tubes (H) using a bottle

brush or similar tool

•Observe that the combustion products can flow

freely in the condenser tubes

•Replace the condenser access plug (7) and the

top cover (G), making sure that the seal (I) is

properly positioned when replacing the cover

•Make sure that the seal (I) on the cover and the

access plug is in good condition.

NOTE: If after cleaning the condenser, the tempe-

rature of the flue gasses still exceeds 250

deg. F (120C), perform a boiler check.