16
3.4.1
Replacing the unit filters
The ComfoAir 70 must not be operated without filters. When changing filters, the unit needs to be set to the
Standby operating mode.
The ComfoAir 70 has two high-quality, MERV 8 (class G4) filters that are installed by default. Retrofitting a pollen filter, MERV 13
(class F7), is possible. This is inserted into the lower filter compartment (outdoor air filter). The filters can be obtained via Zehnder
North America or distributor. The filters in the ComfoAir 70 must be checked in accordance with the relevant notification on the
control panel and, if needed must be replaced. In doing so, proceed as follows:
1. Set the unit into the Standby operating mode.
2. Remove the upper canopy by pulling it out of the guides in an upward direction, as shown below.
3. Insert your finger into the recess between the filter cover and the housing, and pull the filter cover out.
4. Gripping the pulling tabs, carefully pull the filter out of the filter compartment.
Filter compartment for exhaust air filter
(MERV 8 / class G4)
Filter compartment for outdoor air filter
(MERV 8 / class G4 or MERV 13 / F7)
INSTRUCTIONS FOR USER & SKILLED TECHNICIAN
