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Page 14 USSC
NOTE: Your furnace may come partially pre-assembled, but in the case that it is not, follow the instruc-
tions below.
Prior to assembling, place the unit in the general vicinity of the installation. This should help minimize handling damage
to the unit after assembly. Note: If your basement can't handle a height of 7' 8" you must lay the furnace on two, 2 x 4's
to slide shrouds onto weldment. Then stand furnace up.
1. Unit side shrouds can be assemble by slipping the side
shrouds into place from the top down. If they don't
slide easily, open up the lip of the sides with a large
screw driver then add a little oil. Sometimes a slight
tapping with a block of wood and hammer may be re-
quired, but do not force. When properly installed, the
electrical knock-outs will be at the top left side. NOTE:
Should you wish to install a domestic hot water coil, it
should be secured to the right side prior to assembly.
Also, the rear cast iron baffle must be fastened prior to
shroud installation.
NOTE: The furnace is partially prewired all that is re-
quired is the wiring of the distribution fan (see wiring
diagram, page 18) and the wiring to wall the thermo-
stat.
4. After mounting the two (2) fans proceed to the fan
control center.
NOTE: The best maintenance for fan motors is to keep
them clean (exceptionally clean). Oiling with 20W N.
detergent once a season will also help, but cleanliness
is what prolongs motors life. (Two (2) drops on the
draft blade, four (4) drops in the distribution fan.)
Attaching the distribution fan. First, remove the four
(4) bolts from the rear of the unit. Secondly, slide the
distribution fan up to the rear of the furnace, line up
the (4) holes and reattach the bolts and tighten se-
curely.
2.
Attach the draft fan to the back of the weld on the
throat (2" throat hole with 3 mounting holes). It's best
to use the self tapping screws without the draft fan to
establish threads then mount blower. The electrical
box on the blower should be facing downward. Draft
fan air intake cover should be set at a 20% opening,
about 1/2" opening.
3.
DISTRIBUTION FAN
REAR OF FURNACE
DISTRIBUTION FAN
DRAFT FAN