Zehnder Group ComfoAir 160, Installer Manual

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9 - EN
• Install a silencer of at least 1m straight directly
onto the supply and return air connections. For
relevant advice, please contact Zehnder.
• When using flexible ducting only Zehnder ducting
systems may be used. Any other flexible ducting
will disturb the basic operating principle of the bal-
anced ventilation system.
• We recommend that the ventilation system is fitted
with intake and exhaust valves made by Zehnder.
ComfoAir 160 - Right
2.6.4 Connection of the condensation drain
Standard heat exchanger
ComfoAir - Right
Warm exhaust air is cooled by the outside air in the
heat exchanger. This causes the moisture in the in-
door air to condense in the heat exchanger. The con-
densation water created in the heat exchanger is fed
to a PVC condensation drain.
The connection for the condensation drain has an ex-
ternal diameter of 32 mm. It is located underneath the
ComfoAir.
•
Connect the condensation drain, via a pipe with
coupling or hose, to the water seal (siphon) of the
domestic waste-water system.
• Make sure that the outer end of the pipe or tube
exits is at least 60mm below the water level.
• Ensure the condensation drain pipe on ceiling-
mounted units has a run-off to the U bend. of at
least 2%.
Ensure that the water seal connected to the
domestic waste-water system is always full
of water. This prevents the ComfoAir from
sucking in any leakage air.
Enthalpy exchanger
When the ComfoAir is fitted with an enthalpy exchanger
the humidity from the extracted air is partly transferred
to the fresh supply air. In this case you delay the process
of drying out the house in dry winter months, additionally
there is no condensate that must be drained from the
ComfoAir. Therefore a condensation drain is not neces-
sary with an enthalpy exchanger.
Ensure that the condensation drain is sealed.
This prevents the ComfoAir from sucking in
any leakage air.
The condensation drain can be sealed with a standard
screw-cap.
2.7 Commissioning the ComfoAir
After installation, the ComfoAir must be commis-
sioned.
This can be done via the P menus on the digital op-
erating device. These P menus can be used to enter
various settings (ventilation programmes, in particu-
lar) for the ComfoAir. An overview of the available P
menus is given below:
Menu options
P1 Reading statuses (from menu P2)
P2 Setting time delays
P3 Setting and reading the ventilation levels
P4 Setting and reading the temperatures
P5 Setting additional programmes
P6 Setting additional programmes
P7 Reading and resetting malfunctions (and
system information)
P8 Setting the RF input
P9 Reading statuses (from menu P5 and P6)
P menus P1, P2 and P9 can be accessed by the user,
mainly to read statuses and set time delays. The re-
maining P menus P3 to P8 are intended
solely for the
installer.
After a power cut, the bypass valve will au-
tomatically search for the correct position. It
may be that the valves move a few times so
the correct position can be determined.