18-GJ02D1-2 3
Installer’s Guide
2. Do not use preformed 3/4" PVC running traps.
The use of Field fabricated or manufactured traps is acceptable. A manufac-
tured trap can allow for a float switch option to be added. Refer to the manufac-
turers data and instructions for details.
3. The trap must be located within 4 feet of the air handler drain outlet connection.
4. It is recommended that a clean-out tee or cross be installed in the primary
drain line for future maintenance (See Figure 3).
5. Do not use reducing fittings in the condensate drain lines.
6. Slope the drain lines downward a minimum of 1/4" per foot.
7. Insulate the primary drain to prevent sweating.
8. Provide means for drainage to prevent winter freeze-up of condensate line.
9. Do not connect the drain line to a closed drain system.
10. Use Teflon® tape on the air handler drain line connections! Do Not Use pipe
joint compound or PVC/CPVC cement!
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. Support the condensate pip-
ing and traps outside the unit to prevent strain on the drain coupling.
G. ELECTRICAL — POWER WIRING
2" MIN.
2" MIN.
CAP OR PLUG
Trap must be within 4'
of air handler condensate
drain connection.
Close as possible
Figure 3. Condensate Trap
1. These Air Handlers are shipped from the factory wired for 230 volts. The units
may be wired for 208 volts. Follow instructions on unit wiring diagram located on
blower door.
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.
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 practices and procedures.
If an electric heater is not installed, the Knockout Plate provided in the Accessory
Kit MUST be installed on the outside of 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.
NOTE: If air handler is used with or without a heater, the 7/8" electrical entry
hole as well as any other cabinet penetrations must be sealed air tight.
ELECTRICAL SHOCK HAZARD! LOCK OUT UNIT DISCONNECT SWITCH IN
OPEN POSITION BEFORE SERVICING UNIT. FAILURE TO FOLLOW THIS WARN-
ING COULD RESULT IN PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH.
4"
6"
17"
1"
3/8"
1/4" HOLES (4)
ACCESSORY BAY99X123
IF AIRHANDLER IS USED
WITHOUT
A FACTORY FURNISHED
SUPPLEMENTARY HEATER, A PLATE IS REQUIRED TO COVER
THE OPEN HOLE IN THE AIR FLOW SYSTEM
Figure 4. Heater Plate - Order Accessory BAY99X123 or field fabricate
to these dimensions
Pressure Drop for Electrical Heaters in Air Handler Models
1234
600 0.01 0.02 0.02
700 0.01 0.02 0.02
800 0.02 0.03 0.03 0.04
900 0.03 0.03 0.04 0.05
1000 0.04 0.04 0.05 0.06
1100 0.04 0.05 0.06 0.07
1200 0.05 0.06 0.07 0.08
1300 0.06 0.07 0.08 0.09
1400 0.07 0.08 0.1 0.11
1500 0.08 0.09 0.11 0.13
1600 0.09 0.1 0.12 0.15
1700 0.1 0.11 0.14 0.17
1800 0.11 0.13 0.16 0.19
1900 0.13 0.15 0.18 0.21
2000 0.14 0.17 0.23 0.2
NUMBER OF RACKS
AIR PRESSURE DRO
Strip heater pressure drop measurements listed in this table must be added to
system static pressure to correctly use corresponding blower performance table
located on Pages 4, 5, & 8.
2/4TGB AIR HANDLERS WITH SINGLE STAGE COOLING AND TWO
STAGE HEATING
From Dwg. B801081 Rev. 2
H. CONTROL WIRING
1. Connect wiring between indoor unit, outdoor unit and thermostat. The use of
color-coded low-voltage wires is recommended.
2. Field wiring diagrams are provided which show the low voltage wiring hookup
for a single speed cooling only system (with supplementary heaters) and a heat
pump system (with supplementary heaters). Plug in type electrical connectors
are provided for use with supplementary heaters.
IMPORTANT: When supplementary heaters are installed, inspect to insure that
all packaging material has been removed.
NOTE: Direct drive motors have bearings which are permanently lubri cated and
under normal use lubrication is not recommended.
Grounding Required! Follow proper local and state electrical code on require-
ments for grounding. Failure to follow code could result in death or serious
injury.
To Next Page
Loading...
