Zehnder ComfoFond-L Q ST Manuel De L'utilisateur page 2

ComfoFond-L Q
User Manual
Heating
Questions
Please contact the supplier if you have any questions. On the rear
fl ap of this manual is a list with the contact details of the most com-
mon suppliers.
What is this unit for?
The ComfoFond-L Q is a fl uid-driven ground-source heat exchan-
ger (also known as a geothermal heat pump) which uses ground
heat to preheat or cool outdoor air as required before it is supplied
to the dwelling.
Operating principles
The system comprises a number of components, including a Com-
foAir Q heat recovery unit, a ComfoFond-L Q and ducting. These
devices are controlled using the ComfoAir Q operating panel.
3
2
1. Brine loop pipework.
2. ComfoFond-L Q.
3. ComfoAir Q.
Brine loop pipes are laid in the ground and connected to the dwel-
ling. In the winter the cold outdoor air is preheated, ensuring the
ventilation system continues to operate effectively even at low tem-
peratures. In the summer the warm outdoor air is precooled.
The ComfoFond-L Q is specially developed to operate in combi-
nation with a Zehnder ventilation system of type ComfoAir Q with
Option Box.
Operation
The ComfoFond-L Q is controlled by the ComfoAir Q to which it is
connected. This runs entirely automatically based on the set tempe-
rature profi le of the ComfoAir Q.
Maintenance
The ComfoFond-L Q should be inspected and cleaned annually by
a specialist. To ensure a hassle-free lifespan for your ComfoFond-L
Q, we recommend you take out a service agreement with an expert
company.
ComfoFond-L Q ST ComfoFond-L Q ST
Cooling
1
ComfoFond-L Q TR
Fresh Air
Filter
The replacement period of the fi lter depends on local circumstan-
ces. We recommend replacing the fi lter when replacing the Comfo-
Air Q fi lters.
Replace the fi lter (at least) once every six months.
1. Disconnect the power to the Option Box and the ComfoAir Q.
2. Remove the handle (A) from the ComfoFond-L Q.
A
ComfoFond-L Q ST
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 handle (A) in the ComfoFond-L Q.
6. Return power to the Option Box and the ComfoAir Q.
Filters must be replaced with the original manufacturer's
fi lters only. These can be ordered from the supplier of the
ComfoFond-L Q.
Pressure meter
Inspect the pressure in the ComfoFond-L Q at least once a year.
Contact the fi tter if the pressure is below 0.5 bar or above 2.5 bar.
Note the indicate pressure.
The pressure can vary over time due to temperature
changes in the subsoil. The ideal pressure is 1.5 bar.
Clean Air
A
ComfoFond-L Q TR
B