Temspec Unit Ventilator IOM 2023-07-05
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Cleaning the Coils
To clean the coil, purchase a suitable evaporator coil cleaning solution such as those offered by NU-
CALGON (www.nucalgon.com). Follow the manufacturer’s instructions for use.
Note: Chlorine-based or anti-fungal “pucks” or “socks” are acceptable when placed in the drain pan.
Be sure to vacuum the drain pan during the cleaning process.
If the filters are regularly changed, the heating coils do not require cleaning.
WARNING: Do NOT use chlorine-based cleaners or anti-fungal treatments on the
aluminum fins of coil.
Motors
Temspec provides motors that are permanently lubricated. No maintenance is required.
NOTE: Temspec does not recommend the use of a Unit Ventilator during construction/drywall
installation as a space heater or air conditioner. Motor exposure to drywall dust can reduce motor life
and leads to premature failure
Cleaning the Energy Recovery Wheel
Temspec recommends that the ERV desiccant wheel be cleaned with a vacuum periodically and that
the use of a cleanser is only required when necessary. When cleaning the wheel with a vacuum take
care not to damage the wheel’s polymer material.
WARNING: Do NOT use ACID based solutions, AROMATIC solvents, STEAM OR WATER
with temperatures GREATER than 170°F.
The clean desiccant coated polymer energy recovery wheel requires a non-acid based (evaporator)
coil cleanser or alkaline detergent.
First you must gain access to the energy recovery wheel by removing the return air and ERV access
panel by loosening the required fasteners. Once this is completed follow the recommended steps of
the wheel manufacturer Airxchange listed below.
• Remove wheel from Unit Ventilator
• Remove the wheel from the cassette
• Remove loose accumulated dirt by brushing the wheel face
• Wash the wheel with a non-acid based (evaporator) coil cleanser or alkaline detergent solution. (The
wheel manufacturer suggests cleaners such as KMP Acti-Klean in a 5% solution works well)
• If the wheel is extremely dirty it may be required to soak overnight to remove all contaminants.
• Once soaking is completed, rinse the solution from the wheel until the water comes clear.
• Allow excess water to drain and re-install cassette.
NOTE: There may be some staining to the desiccant, however this will not adversely affect the
performance.
For more information, please see the ERV manufacturers’ website:
http://www.airxchange.com/resource-center-technical-notes.htm
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