Condensate Drain; Fan Motors And Drives; Power Supply And Wiring - International comfort products FHS Series Installation Instructions Manual

Condensate Drain

Install a trapped condensate drain line to unit connection as
shown in Fig. 12. The unit drain connection is a PVC stub
(see Fig. 13). Some areas may require an adapter to con-
nect to either galvanized steel or copper pipe. For these ap-
plications, install a field-supplied threaded PVC adapter.
NOTE: A trap must be installed in the condensate drain line
to ensure that the static pressure of fans is balanced with
the water column in the drain line and that condensate can
drain completely from pan. Without a trap, air can be drawn
up the drain line until water level in condensate pan be-
comes equal to static pressure created by fans, preventing
complete drainage. Conditions will worsen as filters become
dirty.
Install clean-out plugs in trap. Pitch drain line downward to
an open floor drain or sump. Provide service clearance
around drain line to permit removal of unit panels. Observe
all local sanitary codes.
As shipped, the unit's condensate drain pan is NOT sloped
towards the drain connection. The pan slope must be
changed to pitch towards the side of the unit with the drain
connection. See Fig. 13. Loosen the 2 screws next to the
drain outlet at both ends of the unit, push drain pan down
in the slots near the drain connection, and up in the slots
on the opposite end. Re-tighten screws. The pan should
have a pitch of at least
drain connection.
NOTE: Dimensions in [ ] are in millimeters
Fig. 12 — Condensate Drains
508 01 1603 01
1 / -in. over its length toward the
4
3" MIN.
[76]
Specifications subject to change without notice.
Fig. 13 — Drain Pan Slope Adjustment

Fan Motors and Drives

Motor and drive packages are factory installed in all units.
The motor and drive packages consist of the following
items:
1 — fan motor
1 — adjustable motor pulley
1 — fan pulley
1 — fan belt (FAS072-120 and FHS072-120 units)
2 — matched fan belts (FAS150-300 and FHS180 units)
For instructions on changing fan rotation, changing drive
speeds and adjusting drives, see Pulley and Drive Adjust-
ment on page 31.

Power Supply and Wiring

Check the unit data plate to ensure that available power
supply matches electrical characteristics of the unit. Provide
a disconnect switch with an integrated lock-out feature of
size required to provide adequate fan motor starting current.
See Tables 14-17 for unit electrical data. See Table 18 for
fan contactor coil data.
WARNING
Failure to follow this warning could result in personal in-
jury or death.
Do not use gas piping as an electrical ground.
Unit cabinet must have an uninterrupted, unbroken elec-
trical ground to minimize the possibility of personal injury
if an electrical fault should occur. This ground may con-
sist of electrical wire connected to unit ground lug in con-
trol compartment, or conduit approved for electrical
ground when installed in accordance with NEC (National
Electrical Code); ANSI/NFPA 70, latest edition (in Cana-
da, Canadian Electrical Code CSA [Canadian Standards
Association] C22.1), and local electrical codes.
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