15
5. Open the filter c lips which are l ocated underneath the
hood top. Insert the a lumi num filter into t he bottom
filter rack (hood divider). Push the filter into position
past the open filter clips. Close the filter clips to lock
the filter into place. See Fig. 13.
6. Caulk the ends of the joint between the unit top panel
and the hood top.
7. Replace the filter access panel.
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER
FILTER
HOOD
FILTER
CLIP
OUTSIDE
AIR
C08634
Fig. 13 -- Ec onomizer Filter Installation
Step 9 — Install External Condensate Trap and Line
The unit has one
3
/
4
-in. condensate drain connection on
the end of the condensate pan and an alternate connection
on the bottom. See Fig. 14. Unit airflow configuration
does not determine which drain connection to use. Ei ther
drain connection can be used with vertica l or hori zontal
applications.
When using the standard side drain connection, ensure the
red plug in the alternate bottom connection is tight. Do
this before setting the unit in place. The red drain pan can
be tightened with a
1
/
2
--in. square socke t drive extension.
To use the alternate bottom drain connection, remove the
red drain plug from the bottom connec tion (use a
1
/
2
-- i n .
square socket drive extension) and install it in the side
drain connection.
DRAIN
(FACTORY-INSTALLED)
PLUG
CONDENSATE PAN (SIDE VIEW)
STANDARD
SIDE DRAIN
ALTERNATE
BOTTOM DRAIN
C08021
Fig. 14 -- Condensate Drain Pan (Side View)
The piping for the condensate drain and external tra p can
be completed after the unit is in place. See Fig. 15.
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4 in. (102 mm) trap is recommended.
MINIMUM PITCH
1˝ (25 mm) PER
10´ (3 m) OF LINE
BASE RAIL
OPEN
VENT
TO ROOF
DRAIN
DRAIN PLUG
ROOF
CURB
SEE NOTE
3˝(76 mm)
MIN
a50--- 9660
Fig. 15 -- Condensate Drain Piping Details
All units must have an external trap for condensate
drainage. Install a trap at least 4-in. (102 mm ) deep and
protect against freeze-up. If drain line is installed
downstream fr om the external trap, pitch the line away from
the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Do not use
a pipe siz e sma ller than the unit connectio n (
3
/
4
-in.).
Step 10 — Make Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result i n personal
injury or death.
Do not use gas pipi ng as an el ect rical ground. Unit
cabinet must have an uninterrupted, unbroken electrical
ground to minimize the possibility of personal injury if
an electrical fault should occur. This ground may consist
of electrical wire connected to unit ground lug in control
compartment, or conduit approved for electrical ground
when installed in accordance with NEC (National
Electrical Code); ANSI/NFPA 70, latest edition (in
Canada, Canadian Electrical Code CSA [Canadian
Stan dar ds As s o ciation ] C22 .1) , and local electrical cod es .
!
WARNING
NOTE: Field--supplied wiring shall conform with the
limitations of minimum 63_F(33_C) rise.
Field Power Supply —
If equipped with optional Powered Convenience Outlet: The
power source leads to the convenience outlet’s transformer
primary are not factory connected. Installer must connect
these leads according to required operation of the
convenience outlet. If an always--energized convenience
outlet operation is desired, connect the source leads to the
line side of the unit--mounted disconnect. (Check with local
codes to ensure this method is acceptable in your area.) If a
de--energize via unit disconnect switch operation of the
convenience outlet is desired, connect the source leads to the
load side of the unit disconnect. On a unit without a
unit--mounted disconnect, connect the source leads to
compressor contactor C and indoor fan contactor (IFC)
pressure lugs with unit field power leads.
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