8
18-GE14D1-5
Installer’s Guide
two secondary drains should be connected as a backup
to prevent condensate overflow by a blocked primary
drain. The weep hole in center of drain coupling area
should be sealed with caulk or RTV unless secondary
drain is connected.
For proper drainage of condensate, the following steps
should be followed:
1. The primary drain line must be trapped with a
minimum of 2" water seal as shown in Figures 14 &
15.
Do not use preformed 3/4" PVC running
traps.
The use of field fabricated or manufactured traps as
shown in Figures 14 & 15
is acceptable. The manu-
factured trap shown in Figure 14 allows for a float
switch option to be added. Refer to the manufactur-
ers data and instructions for details.
2. The trap must be located within 4 feet of the Air
Handler drain outlet connection.
3. It
is recommended that a clean-out tee or cross be
installed in the primary drain line for future main-
tenance (See Figure 14 & 15).
4. Do not use reducing fittings in the condensate drain
lines.
5. Slope the drain lines downward a minimum of 1/4"
per foot.
6. Insulate the primary drain to prevent sweating
where pipe temperature could meet or fall below
dewpoint temperatures.
7.
Provide means for drainage to prevent winter
freeze-up of condensate line
.
8. Do not connect the drain line to a closed drain sys-
tem.
It is always recommended that an auxiliary drain pan
be installed under a horizontally installed Air Handler.
Connect the auxiliary drain line to a separate drain line
(no trap is needed in this line) and terminate according
to local codes.
NOTE: Do NOT use a torch or flame near the plastic
drain pan coupling.
NOTE: Do NOT tighten the drain pipe excessively. Sup-
port the condensate piping and traps outside the unit
to prevent strain on the drain coupling.
H. ELECTRICAL - POWER WIRING
1. These Air Handlers are shipped from the factory
wired for 208/230 Volts. The units may be wired for
208 Volts. Follow instructions on unit wiring dia-
gram located on inside blower panel housing and in
the Service Facts document included with the unit.
2. The selection of wire and fuse sizes should be made
according to the Minimum Branch Circuit Ampacity
and the Maximum Overcurrent Device listed on the
unit nameplate.
IMPORTANT: The BAYHTR** electric heat accessory,
designed for use with this air handler, may include up to a
combination of three 30 and / or 60 amp circuit breakers to
provide an electrical disconnect for service personnel that
is intended to help protect internal electrical components in
the event of a short circuit or ground fault. As designed, the
circuit breakers supplied in the BAYHTR** accessory do not
provide over-current protection of the branch circuit.
Therefore, the branch circuit(s) shall be sized and protected
according to the unit nameplate.
3. Field wiring diagrams for electric heaters and unit
accessories are shipped with the accessory.
4. Wiring must conform to National and Local codes.
Ground unit per Local codes following recognized
safety procedures.
If an electric heater is not installed, the installer MUST
seal opening with a sheet metal plate made per Figure
1 and the Knockout Plate provided in the Accessory Kit
MUST be installed on the air handler and the conduit
terminated to it. The electrical connections are made
using the two power leads and ground wire connections
which are located near the discharge of the blower.
Openings where field wiring enters the cabinet
must be completely sealed.
Location of power entry
is shown on the outline drawing. Use 2.5" clear stick-
ers to seal all unused electrical knockouts. See Figure
9.
NOTE: If Air Handler is used with or without a heater,
the electrical entry hole as well as any other cabinet
penetrations must be sealed air tight.
IMPORTANT: When supplementary heaters are in-
stalled, inspect to insure that all packaging material
has been removed.
