Maintenance; For Replacing Filters; Cleaning Condensation Drain - Zehnder ComfoFond-L Q ST Série Manuel De L'installateur

6. Maintenance

Failure to carry out (periodic) maintenance on
the ComfoFond-L Q ultimately compromises the
performance of the system.
To ensure a hassle-free lifespan for your
ComfoFond-L Q, we recommend you take out a
service agreement with an expert company.
The following maintenance may be carried out by the
user:
Replacing the filter;
Checking the system pressure.
All other servicing may only be performed by an
installer or service technician. A concise explanation
of the maintenance activities is given in the
paragraphs below.
Ensure the ComfoFond-L Q has been
disconnected from mains power before carrying
out any maintenance work. To do this disconnect
the Option Box and the ventilation unit from the
power supply to which it is connected.
Bear in mind that the brine loop is
pressurised.
A maintenance log has been included at the rear
of this manual which can be used to note all
performed maintenance.
For maintenance of the ComfoAir Q, please read the
instructions in the ComfoAir Q manual.
EN - 24

6.1 For replacing filters

The replacement period of the filter depends on local
circumstances. We recommend replacing the filter
when replacing the ComfoAir Q filter.
Replace the filter (at least) once every six
months.
1. Disconnect the Option Box and the ventilation
unit from its power supply.
2. Remove the filter handle (A) from the
ComfoFond-L Q.
A
ComfoFond-L Q TR
3. Remove the old fi lter (B) from the ComfoFond-L Q.
4. Slide the new fi lter back into the ComfoFond-L Q.
5. Click the fi lter handle (A) in the ComfoFond-L Q.
6. Return power to the Option Box and the
ventilation unit.
Filters must be replaced with the original
manufacturer's filters only.

6.2 Cleaning condensation drain

Inspect the ComfoFond-L Q condensation drain
at least once a year.
1. Disconnect the Option Box and the ventilation
unit from its power supply.
2. Disconnect the condensation drain.
3. Perform the following checks of the condensation
drain siphon:
Check whether the drain is still open by adding
extra water to the siphon;
Visually inspect the condensation drain for
contamination;
Check that there is enough water in the
siphon. Air must not pass through the siphon;
4. Resolve any established problems;
5. Reconnect the condensation drain;
6. Return power to the Option Box and the
ventilation unit.
A
ComfoFond-L Q ST
B