18-GE04D2-5
7
Installer’s Guide
COOLING OFF - DELAY OPTIONS
SWITCH SETTINGS
SELECTION
NOMINAL
AIRFLOW
5 - OFF
6 - OFF
NONE
SAME
5 - ON
6 - OFF
1.5 MINUTES
100% *
5 - OFF
6 - ON
3 MINUTES
50%
5 - ON
6 - ON
ENHANCED**
50 - 100%
* - This setting is equivalent to the BAY24X045 relay benefit
** - This ENHANCED MODE selection provides a ramping up
and ramping down of the blower speed to provide improved
comfort, quietness, and potential energy savings. The graph
shows the ramping process.
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 piping and traps outside the unit to prevent
strain on the drain coupling.
G. ELECTRICAL — POWER WIRING
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 lo-
cated on blower 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.
3. Field wiring diagrams for electric heaters and unit
accessories are shipped with the accessory.
DIP SWITCHES (AS SHIPPED)
COOLING
HEATING
AIRFLOW
FAN OFF
DELAY
AUXILIARY
HEAT SPEEDS
0
OFF
OFF
50%
80%
100% if necessary
50%
Dehumidify
Fast Coil Cooling
and Heating
Efficiency
7.5
minutes
3
minutes
1
minute
FAN OPERATION (CFM)
COMPRESSOR OPERATION ON
OFF
as required
From Dwg. 800796a
CFM
SELECTION
LIGHT
DIP
SWITCHES
ICM FAN CONTROL
Figure 9
If an electric heater is not installed, connections are
made through the 7/8" knockout into the air handler
junction box 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.
H. CONTROL WIRING
1. Connect wiring between indoor unit, outdoor unit and
thermostat. The use of color-coded low-voltage wires is
recommended.
2. A low voltage terminal board is provided for control
wiring, and is located on the left side of the cross brace
in the center of the unit.
3. 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.
4. Wiring must conform to National and Local codes.
Ground unit per Local codes with good safety proce-
dures.
