Operations & Maint.Manual VER Rev2.doc [9]
The outdoor and indoor conditions of your area will determine the frequency of filter
changes. Temspec recommends that the filters be changed every 3 months as a rule-of-
thumb. Note that dirty filters adversely affect the overall performance of the unit.
To change the mixed air and ERV outdoor air (OA) filters, open / remove the top access
panel by loosening the Phillips head screws, unclip the two mixed air filters and remove.
If the unit is equipped with an ERV module you can remove and replace the ERV OA filters
which is located below the mixed air filters near the back-right side of the unit.
Be sure to note the airflow direction that is marked on the filter(s).
To change the ERV exhaust filter remove the return air access panel by loosening the
Philips head screws, unclip the ERV exhaust filter located on the on the ERV access panel
and replace filter noting the airflow direction on the filter.
Replace all access panels and ensure fasteners are securely fastened.
The following are the recommended steps for performing maintenance on the Hydronic
portion of the unit.
CAUTION: Disconnect power at the remote circuit breaker before servicing the
unit.
• Clean strainer, check and clean regularly. See the maintenance schedule for
suggested frequency.
CAUTION: Disconnect power before servicing the unit.
WARNING: Do NOT use condenser coil cleaning compounds on the cooling or
heating coils.
To clean the evaporator coil, purchase a suitable evaporator coil cleaning solution such as
those offered by NU-CALGON. Follow the manufacturer’s instructions for use.
Note: Chlorine based or anti-fungal “pucks” or “socks” are acceptable when placed in the
evaporator drain pan.Be sure to vacuum the drain pan after the cleaning process
is complete and prior to adding the anti-fungal component.
WARNING: Do NOT use chlorine-based cleaners or anti-fungal treatments on
the aluminum fins of any coil.
