Nu-Air Ventilation Systems Inc. - HRV Operating &Installation Manual
Revised April 27, 2012
Page 5 of 17
4.4
Condensate Drain
Wipe clean the condensate drain pan every six months. 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.
4.5
Cores
The HRV polypropylene cores (2 cross-flow exchangers) should be removed and cleaned at least
twice a year using a non-corrosive enzyme detergent in cold water. In some applications, e.g.
smoking rooms, more frequent cleaning with alternative detergents is suggested.
The ERV polymer membrane cores are washable in cold water. Remove core(s) from the
cabinet twice annually and rinse with fresh water to remove any
contaminants that pass through the filters.
Do not use high pressure water supply.
A
mild
non-corrosive enzyme detergent can be utilized if desired.
4.6
Exterior Hoods
Regularly check the outside vents and clear 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. Ensure leaves, lawn clippings, snow and
frost do not build up and restrict or block openings.
4.7
Diffusers and Ductwork
Clean the diffusers with soap and water when they are dusty or otherwise
noticeably dirty. Exhaust diffusers require more frequent cleaning than
supply diffusers.
4.8
Belts
The standard belt supplied with this unit is B36.
The belts should be regularly inspected for tension, wear, etc. at regular intervals. A belt
maintenance guide has been included at the back of the manual. Nu-Air recommends a spare set
of belts be purchased with the HRV for maintenance stores.
