Rev. December 19, 2008
Page 13 of 19
6.
OPERATING HINTS
Set the
dehumidistat
at the desired level. Look for signs of excessive humidity or dryness.
Let your
windows be your guide
. As outdoor temperatures decrease – the comfortable humidity level also
decreases.
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 – On extremely humid days it is best not to run the HRV during the day. At night
turn the machine on high speed using the dehumidistat. This will help keep your home cool and
your basement fresh. In the morning, turn the machine off again. The normal summer setting is 55%
- 75%. Alternatively plug the HRV into an electrical timer set to switch on/off at desired intervals.
7.
MAINTENANCE
CAUTION:
Disconnect power before servicing.
7.1.
Filters:
Dirty filters can reduce ventilation efficiency, result in unbalanced airflow and damage or shorten the
life of the motors. Clean 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.
7.2.
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.
7.3.
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.
7.4.
Core
The core (located behind the cover) should be removed and cleaned at least once a
year, using a mild detergent in cold water (i.e. Arctic Power). To remove the cover of
the machine, unlatch the two latches; slide the door to right to release from hinges.
7.5.
Exterior Hoods
Regularly check the outside vents and clean any obstructions such as grass, leaves or
other debris. Do not replace the screen with mesh smaller than 1/4" as this will restrict
airflow. During winter operation, ensure snow and frost does not build up and restrict
or block openings.
