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11. BENEFITS OF THE DUOTROL™ SYSTEM
MODE SELECTOR
• Intermittent
• Continuous
• Off
SPEED ADJUSTMENT
+
• Increase Speed (
)
–
• Decrease Speed (
)
12. BALANCING THE UNIT
WITH THE DUOTROL™
SYSTEM
GREEN LIGHT
MODE SELECTOR
YELLOW LIGHT
BALANCING MODE
Page 10
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)
DUOTROL
BALANCING
TM
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. Set your fresh
air supply by selecting the «OFF» position on the
Duotrol
. Install your magnehelic gauge and air
TM
flow grid in the fresh air duct.
Step 4: Press the (–) button to decrease the cfm
or press the (+) button to increase the cfm.
ACTS AS A MODE SELECTOR
INTERMITTENT: When the selector switch is in the intermittent
position the HRV will only run when there is a call for ventilation
by any control. At that time the unit will run on high speed until the
condition is satisfied.
CONTINUOUS: When the selector switch is in the continuous
position the HRV will run continuously on pre set speed except
when there is a call for override by any control.
OFF: When the selector switch is in the off position the HRV will not
come on even if there's a call for ventilation by any control.
+ BUTTON: Increase the speed of the selected motor.
– BUTTON: Decrease the speed of the selected motor.
B) OPEN DUOTROL COVER
1. UP (Exhaust Motor)
2. MIDDLE (Both Motors)
3. DOWN (Supply Motor)
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. To lock 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
(+) and (-) buttons set low speed on the HRV.
. By using
TM
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