Condensate Drain
All units are equipped with a 3/4" I .P . stainless steel
condensate drain pipe projecting from the back side of the
furnace section (see
box corners (see
) . Drainage of condensate directly
onto the roof may be acceptable in certain areas, refer to local
codes . If applicable codes or regulations require, this can be
routed to a drain . A trap is not recommended and heat tape or
some other method of freeze protection is required .
Vestibule (Models 150 through 200)
WARNING
For installations where the ambient temperatures fall below freezing, if the
condensate is not piped to the drain properly, or does not include some
heat protection, the condensate will freeze. Frozen drain lines may cause a
build up of condensate inside the heat exchanger resulting in leakage and
damage to the rooftop unit and probably to the facility.
These two furnace sizes exceed the allowable shipping width
and for this reason the burner is disconnected and removed
for shipment . A sheet metal vestibule weather enclosure is
also disassembled for shipment . At installation the burner
must be re-mounted, the tagged electrical connections re-
attached, and the vestibule re-assembled and mounted as
shown in
. These items are packed in a crate and
shipped as a separate item .
Figure 6: Vestibule — Model 020–140
Figure 7:
Vestibule — Model 150–200
Cut Gas Line Opening
Hinge
Side Panel
Door
Top Panel
Side Panel,
With Latch
Bottom Panel
#10 Screw
Door
Fasten Wind Deflector
To Door With #10 Screws,
(Door & Wind Deflector
Part of Vestibule Kit)
Step 1
Step 2
Step 3
Step 4
Step 5
Installation
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IM 684-6 • ROOFTOP SYSTEMS