Nu-Air Ventilation Systems Inc. - HRV Operating & Installation Manual
Rev. 3.4 Sept. 20, 2011 - 19 -
5. START-UP
• Ensure the controls are connected in accordance with Section 4.
• For electrical hook-up, plug into a 120 volt receptacle.
• Ensure that the machine is piped to an adequate drainage source, i.e. through the drain hose
supplied.
6. OPERATING HINTS
When a dehumidistat is used, set it at the desired level. Look for signs of excessive humidity or
dryness. Let your windows be your guide.
Winter Operation – 40% - 50% is recommended. Lower settings may be necessary in colder
zones to keep windows free of condensation.
Spring/Fall Operation- 50% - 60% is recommended
Summer Operation – For air conditioned homes run the HRV as recommended for winter
operation, i.e. continuous low speed or use a 20/40 setting. In homes without air conditioning,
there is no need to run the HRV during the day when windows are open. If the HRV is connected
to the bathrooms(s) or kitchen, use the standby setting. The normal dehumidistat summer setting
is 65%-80%.
7. MAINTENANCE
CAUTION: Disconnect power before servicing.
7.5. Filters
Dirty filters can reduce ventilation efficiency, result in unbalanced airflow and damage or shorten the
life of the motors. Vacuum every three months. Polyester filters should be replaced annually.
Permanent electrostatic filters are available from your Nu-Air dealer. Filters remove easily by opening
the front cover.
7.6. Fans
When cleaning the filters, take the opportunity to vacuum any interior surfaces including the fan blades.
No other service is required as these fans are designed to operate continuously without lubrication.
7.7. Condensate Drain
Twice per year wipe clean the condensate drain pan. Check the condensate drain and tubing to ensure
they are free flowing. The tubing must have an "S" or loop that traps a quantity of water to prevent air
from entering the HRV via this tubing.
7.8. Heat/Energy Recovery Core
The core (located behind the cover) should be removed and cleaned at least once a year, using a mild
detergent in cold water. To remove the cover of the machine, unlatch the two latches; slide the door to
right to release from hinges.
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