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DUOTROL
TM
BALANCING SYSTEM
PROCEDURES, STEPS 1 THROUGH 8.
Step 1:
Press the (+) and (–) buttons simultaneously
until you see the yellow light. Once the indicator light
turns yellow you are in balancing mode.
Step 2:
When in balancing mode the selector switch
becomes the motor selector switch. INTER (Right
Motor), CONT (Both Motors) and OFF (Left Motor)
Step 3:
Once the total cfm needed is determined,
you can start balancing the HRV/ERV. Set your fresh
air supply by selecting the «OFF» position on the
Duotrol
TM
. Install your magnehelic gauge and air flow
grid in the fresh air duct.
Step 4:
Press the (–) button to decrease the cfm or
press the (+) button to increase the cfm.
Step 5:
Then perform the same operation on the stale
air side by selecting the «INTER» position on the
DuotrolTM.
Step 6:
The «CONT» position will allow you to
adjust the cfm on both motors proportionately (if
necessary).
Step 7:
Once this is completed, you have set the high
speed on your HRV/ERV. To exit the balancing mode
you must press (+) and (–) buttons simultaneously
and release. The indicator light will turn green to
indicate normal operation mode.
Step 8:
Once high speed is set and locked, switch
to continuous on the Duotrol
TM
. By using (+) and (-)
buttons set continuous speed.
USING THE SELECTOR SWITCH
TIP TO INSTALLER
: When on Balancing Mode, the
Selector Switch allows you to choose the motor you
want to set.
A) CLOSED DUOTROL COVER
1. INTER
(Exhaust Motor)
2. CONT
(Both Motors)
3. OFF
(Supply Motor)
B) OPEN DUOTROL COVER
1. UP
(Exhaust Motor)
2. MIDDLE
(Both Motors)
3. DOWN
(Supply Motor)
WITH THE DUOTROL™
SYSTEM
GREEN LIGHT
MODE SELECTOR
YELLOW LIGHT
BALANCING MODE
14. BALANCING THE UNIT
WITH AN AIRFLOW GRID
& MAGNEHELIC GAUGE
Magnehelic Gauge with Air Flow Grid
Inserting Air flow grid in duct
Seal Air flow grid in duct with duct tape.
