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Energy Recovery Ventilators
MODEL
OD-ERV 150AC
OPERATION
Operating Instructions
a) Inspect your installation to be sure that all duct work is correctly installed and sealed and filters are in place
b) Shut and latch the door to the unit. Plug the unit into a 120V AC power outlet. It will start immediately and run a one
minute system check. The Red indicator light (L1) and Orange indicator light (L2) will illuminate continuously. After one
minute, Red indicator light and Orange indicator light turn off, and the unit runs per the user setting
c) The unit runs at low speed (20-100% of full speed) set by the Outside Air (OA) / Return Air (RA) low airflow knobs
for a period of time (0-60minutes/hour) set by the timer knob. The manual override switch (MOS) boosts the unit to high
speed. The unit returns to low speed operation after the MOS is turned off
d) Humidity Sensor Operation
When the outdoor relative humidity exceeds the user-set limit
(50-100% RH), the unit will stop running and enter a check cycle.
The orange L2 LED indicator light will illuminate continuously.
The check cycle will run the unit for 5 minutes at full speed
every 15 minutes (25% of every hour) in order to sample the
outside air conditions and meet code requirement.
** The HVAC/AHU blower (if connected) will NOT run during this
**
check cycle to prevent cycling. The MOS will still boost the unit
**
to high speed during the check cycle and WILL activate the
**
HVAC/AHU blower if connected
e) Temperature Sensor Operation
When the outdoor temperature falls below 14 degrees F, the unit
will stop running and enter a check cycle. The orange L2 LED indicator light will illuminate continuously. The check cycle will
run the RA fan for 5 minutes at full speed every 15 minutes (25% of every hour) in order to minimize frost on the core and
meet code requirements. The OA fan will not run during this check cycle
** The HVAC/AHU blower (if connected) will NOT run during this check cycle to prevent cycling. The MOS will still boost the
**
RA fan to high speed during the check cycle and WILL NOT activate the HVAC/AHU blower if connected. Install an
**
auxiliary duct heater upstream of the OA duct connection (minimum of 12" clearance) if necessary.
f) Filter Service Indicator
The filters should be cleaned/replaced at a minimum of every 3 months, depending on outdoor air conditions.
The red L1 LED indicator light will illuminate continuously and will buzz once a second in 15 seconds every 2 hours after 3
months of motor operation. This indicates that it is time to clean/replace the filters. After servicing the filters, press and
hold the filter reset button for 5 seconds. Four quick beeps will indicate that the buzzer has successfully been deactivated.
Re-activate it by pressing the button once more.
Balancing Instructions
Balancing the airflow is done by setting the OA fan speed and the RA fan speed to exhaust the same or similar airflow from and
to the outdoors. Inspect your installation to be sure all duct work is correctly installed, sealed, and clean filters are in place.
The entire air delivery duct system needs to be in place and all vents should be in their normal operating position.
KEEP THE MOS SWITCH OFF, plug the unit into a 120V AC power outlet.
After one minute, L1 and L2 turn off, and the unit runs per the user setting.
info@ortechindustries.com
www.ortechindustries.com
13376 Comber Way
375 Admiral Blvd
Mississauga
Surrey BC V3W 5V9
Potentiometers are
visible and accessible
through the opening in
the unit door
Use these two pressure ports to check
pressure drop for the OA air stream
,
ON L5T 2N1
Instruction Manual
Use these two pressure
ports to check pressure
drop for the RA air
stream
1-888-543-6473
1-888-541-6474
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