4
18-GJ03D1-2
Installer’s Guide
WHEN FIELD-INSTALLED HEATERS ARE
USED, DISCARD POWER LEADS WITH
POLARIZED PLUG 1-PM AND CONNECT
1-PF TO MATING PLUG IN THE HEATER
CONTROL BOX AS SHOWN.
PRESSURE DROP FOR ELECTRIC HEATERS IN AIR HANDLER
MODELS
HEATER RACKS
HEATER
MODEL NO.
NO. OF
RACKS
BAYHTR1405
1
BAYHTR1408
2
BAYHTR1410
BAYHTR3410
2
BAYHTR1415
BAYHTR3415
3
If an electric heater is not installed, connections are made through the
7/8" knockout on the outside of the air handler, into the air handler to
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.
Strip heater pressure
drop measurements
listed in this table must
be added to system
static pressure to
correctly use the corre-
sponding air flow
(blower) performance
tables located on page 5.
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 supple-
mentary 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
lubricated and under normal use lubrication is not
recommended.
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 5. Heater Plate - Order Accessory BAY99X123 or field
fabricate to these dimensions
From Dwg. No. B801083
TWG AIR HANDLERS WITH SINGLE STAGE COOLING, 1 STAGE
HEAT
WHEN FIELD-INSTALLED HEATERS ARE
USED, DISCARD POWER LEADS WITH
POLARIZED PLUG 1-PM AND CONNECT
1-PF TO MATING PLUG IN THE HEATER
CONTROL BOX AS SHOWN.
TWG AIR HANDLERS WITH SINGLE SPEED HEAT PUMP
From Dwg. No. B801082
WHEN FIELD-INSTALLED HEATERS ARE
USED, DISCARD POWER LEADS WITH
POLARIZED PLUG 1-PM AND CONNECT
1-PF TO MATING PLUG IN THE HEATER
CONTROL BOX AS SHOWN.
From Dwg. No. B801081
TWG AIR HANDLERS WITH SINGLE STAGE COOLING AND
TWO STAGE HEATING
