Changing Ventilation Cfm Rates In Manual Mode; Changing To Fully Modulating Mode; Manual 2100-597G - Bard I30A1DA Installation Instructions Manual

2.336
EXPOSED MOVING PARTS.
DISCONNECT ALL ELECTRICAL
CHANGING VENTILATION CFM RATES
POWER BEFORE SERVICING.
IN MANUAL MODE
FAILURE TO DO SO CAN RESULT
IN SEVERE INJURY OR AMPUTATION.
WARNING
!
HAZARD OF ELECTRICAL SHOCK.
ELECTRICAL SHOCK CAN RESULT
1.370
IN SERIOUS INJURY OR DEATH.
DISCONNECT THE REMOTE
ELECTRIC POWER SUPPLY OR
SUPPLIES BEFORE SERVICING.
HP. BOARD TROUBLESHOOTING CODES
To adjust the airflow ventilation rate, first refer to
CODE DESCRIPTION
SLOW BLINK NORMAL OPERATION
Figure 24A to look up the "FLOW INDEX" needed for
FAST BLINK COMPRESSOR TIME DELAY
the intake and exhaust blowers for the CFM required.
1.370
1 BLINK LO PRESS. SWITCH FAILURE
Then, perform the following steps:
2 BLINKS HI PR. SW./WATER SNSR. FAIL.
3 BLINKS DEFROST MODE ACTIVE
1. Open front swinging doors of main unit (by popping
4 BLINKS HI PRESS. HARD LOCKOUT
front door latches).
UNIT TIE PLATE
2. Throw main power disconnect to the "OFF"
REMOVE TO DISASSEMBLE, DO NOT
position to eliminate risk of injury or death due to
OVERTIGHTEN BOLTS WHEN REPLACING
electrical shock.
3. Remove five (5) screws holding front ERV door in
place (see Figure 26).
4. Remove ERV controlpanel cover by removing four
(4) screws (see Figure 26).
5. Locate two 0-10Vdc motor control boards in
control panel (see Figure 27).
6. On intake motor control board, observing "GREEN
STATUS LIGHT", turn manual adjust potentiometer
"CCW" to increase "FLOW INDEX" or CW to
reduce "FLOW INDEX" to match desired setting.
NOTE: After long pause, the green status light will
blink long-blinks for the "TEN COUNT" of the "FLOW
RATE INDEX", then immediately followed by fast blinks
which indicate the second digit. For example, a flow
index of 23 would be two long blinks, followed by three
fast blinks of the "GREEN STATUS LIGHT".
7. On exhaust motor control board, observing
"GREEN STATUS LIGHT", turn manual adjust
potentiometer "CCW" to increase "FLOW INDEX"
or CW to reduce "FLOW INDEX" to match desired
setting.
NOTE: Same "GREEN STATUS LIGHT" blink as Step #6.

Manual 2100-597G

Page 42 of 68
7961-754-1
EXPOSED MOVING PARTS.
DISCONNECT ALL ELECTRICAL
CHANGING TO FULLY MODULATING
POWER BEFORE SERVICING.
MODE
FAILURE TO DO SO CAN RESULT
IN SEVERE INJURY OR AMPUTATION.
If the ERV is to be operated in fully variable mode (Fig.
24B) (only run at required speed to maintain setpoint WARNING
!
CO
2
HAZARD OF ELECTRICAL SHOCK. following:
ELECTRICAL SHOCK CAN RESULT
1. Open front swinging doors of main unit (by popping
IN SERIOUS INJURY OR DEATH.
DISCONNECT THE REMOTE
ELECTRIC POWER SUPPLY OR
2. Throw main power disconnect to the "OFF"
SUPPLIES BEFORE SERVICING.
3 PHASE LINE MONITOR CODES
CODE DESCRIPTION
3. Remove ERV control panel cover by removing four
GREEN PHASES CORRECT, Y SIGNAL
LIGHT PRESENT
4. Locate two 0-10Vdc motor control boards in control
PHASES INCORRECT, REVERSE
RED
2 UNIT SUPPLY LEADS. DO NOT
LIGHT
MODIFY FACTORY WIRING. DOING
SO MAY RESULT IN UNIT DAMAGE. 5. Pull jumper pins from "M" terminals, and move to
7961-754-4
UNIT TIE PLATE
7961-754-5
REMOVE TO DISASSEMBLE, DO NOT 6. Connect "+" 0-10Vdc output from CO
OVERTIGHTEN BOLTS WHEN REPLACING
7. Follow the directions supplied with the CO
COLORS:
FORM:
MATERIAL:
PRINTING:
END USE:
7961-754-1
levels), the ERV will need to be configured to the
front door latches).
position to eliminate risk of injury or death due to
electrical shock.
(4) screws (see Figure 26).
panel (see Figure 27).
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"P" terminals (see Figure 27).
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Terminal #3 (along with pink wire), and connect
"-" to Terminal #4 (along with purple wire) of unit
low voltage terminal strip.
8.500
to configure the control appropriately.
ROSE
BRIGHT YELLOW
DARK ORANGE
WHITE BACKGROUND
DIECUT SHEET
OUTDOOR VINYL, SUPPLIER MUST BE CSA
APPROVED FOR ACCEPTABLE ADHESIVE
NAMEPLATE LISTING.
BLACK
INDOOR/OUTDOOR
EXPOSED MOVING PARTS.
DISCONNECT ALL ELECTRICAL
POWER BEFORE SERVICING.
FAILURE TO DO SO CAN RESULT
IN SEVERE INJURY OR AMPUTATION.
WARNING
!
HAZARD OF ELECTRICAL SHOCK.
ELECTRICAL SHOCK CAN RESULT
IN SERIOUS INJURY OR DEATH.
DISCONNECT THE REMOTE
ELECTRIC POWER SUPPLY OR
SUPPLIES BEFORE SERVICING.
Suction Discharge
(Low) (High)
R-410A
VENT POWER CONNECTION
UNPLUG AND REMOVE WIRE CLAMPS control to
2
TO DISASSEMBLE UNIT
control
2
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