Figure 24 Increasing Cooling Speed; Figure 25 Speed Taps - Bard W24G4 Installation Instructions Manual

A STANDARD RATED COOLING AIRFLOW
BLUE
TERMINAL
BLOCK
ORANGE
A RATED AIRFLOW
B
• Locate the orange and blue wires on the terminal
block below the furnace control board.
• Switch the terminal landings on the terminal block.
• Close the control panel.
• To reduce the cooling airflow speed from high to
rated, reverse the blue and orange wires on the
terminal block below the furnace control board.
NOTE: Be sure to adjust the system static or blower
speed to maintain airflows above the minimum
recommendations to prevent freeze up conditions
if Balanced Climate mode is activated.
Do not operate the unit in Balanced Climate mode
if running high static applications as indicated in
the blower performance table. If Balanced Climate
mode is activated as described on page 22, the unit
will run in this mode at all times unless there is a
call for ventilation, electric heat or 2nd stage cooling
from a 2-stage thermostat. At that time, the unit will
automatically activate a higher speed tap.
Manual 2100-721B
Page 44 of 54
Increasing Cooling Speed
TO CHANGE FROM RATED TO HIGH
BLUE
ORANGE/BLACK
ORANGE
NOTE
:
PLEASE NOTE
TERMINAL BLOCK IN REFERENCE TO LOCATION OF
HIGH AIRFLOW
ORANGE
FIGURE 24
TERMINAL
BLOCK
ORANGE/BLACK
BLUE ORANGE
& WIRE LOCATIONS ON
ORANGE/BLACK WIRE
BLUE
TERMINAL
BLOCK
ORANGE/BLACK
Blower Speeds
Five factory programmed speed taps (torque settings)
are available for the motor, and are selected through
different unit modes of operation. These modes are
energized by 24VAC signals from the low voltage
terminal block located inside the control panel by a
thermostat or other controlling device. Each speed tap
is programmed by Bard at the factory to different motor
torque settings (see Figure 25).
TROUBLESHOOTING GE X13-SERIES ECM2.3
Multiple motor speed taps may be energized
Model X13 Communication Diagnostics
The X13 motor is communicated through 24 VAC low voltage
simultaneously by 24VAC power during different modes
(Thermostat Control Circuit Wiring).
1. Start with unit wiring diagram to confirm proper
of operation. The highest number speed tap energized
connections and voltage (see Figure 11).
takes priority with 5 being the highest and 1 being the
lowest.
24VAC Common
24VAC Common
24VAC "R"
signal through
24VAC "R" Signal through
thermostat output.
thermostat output
Speed Tap 1: Balanced Climate Speed
Speed Tap 2: Cool Speed
Speed Tap 3: Cool High Speed
24VAC Common
Speed Tap 4: Heat Speed
Speed Tap 5: Heat High Speed
24VAC "R" Signal through
thermostat output.
B HIGH COOLING AIRFLOW
ORANGE
TERMINAL
BLOCK
BLUE
.
BLOWER
RELAY
™ MOTORS
2. Initiate a demand from the thermostat and check the
voltage between the common and the appropriate motor
terminal (1-5). ("G" input is typically on terminal #1, but
refer to wiring diagram!)
a. If the low voltage communication is not present, check
the demand from the thermostat. Also check the
output terminal and wire(s) from the terminal strip or
control relay(s) to the motor.
b. If the motor has proper high voltage as identified
above (Motor not Running #1), and proper low voltage
to a programmed terminal, and is not operating, the
motor is failed, and will require replacement.
FIGURE 25
Speed Taps
FIGURE 11
ORANGE/BLACK
PURPLE
OPTIONAL
PINK
YELLOW/WHITE
ORANGE/BLACK
BLUE
BLACK/WHITE
BLACK/WHITE
MIS-4139
CONT'D.
Manual 2100-467H
Page 23 of 23