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8 - CHECKING BEFORE COMMISSIONING
Condensate drain connection
In 30PA units, the condensate drain pan includes a 3/4" M bronze,
bleeding trunk for draining condensates.
Attention: With low outdoor temperatures, the electrical heater-
based anti-freeze protection option for the pan is recommended.
Mandatory when outdoor temperatures are below 3°C.
Siphon installation norms
All water drain tubes must be provided
with a siphon to avoid bad smell and
water spills.
• Pan in overpressure:
It is installed to avoid the access through the drain piping of
bad smells.
• Pan in underpressure:
Water must be suctioned from the pan because of the
depression with respect to the motorfan assembly.
Perform the siphon assembly as per the scheme of the attached
starting diagram:
- For the correct siphon design, the "A" height must be at
least twice that of the underpressure (mm.w.c) where the
condensate pan is placed.
- Check that the condensate outlet is not clogged.
9 - OPTIONS
Condensation pressure control
In units with the STD version that work in cooling with an outdoor
temperature lower than 12ºC, the condensation pressure control
allowing an "all seasons" operation (up to -15ºC) is mandatory.
In units with centrifugal fan a check is performed per motorized
Damper
M00 assembly:
HORIZONTAL air supply
14
CONNECT SIPHON
METTRE SIPHON
PONER SIFON
V220014
Servomotor
- The drain piping must be slightly sloped to ease circulation
towards the drain.
- The original diameter of the piping must be respected. No
reduction can be made.
- With outdoor temperatures which are lower than 0°C, the
necessary precautions must be taken to prevent the water in
the drain ducts from freezing.
Condensates pan
in depression
Check the watertightness of the connection.
damper in the fan supply. A servomotor opens or closes the
damper depending on the proportional signal 0-10V received
from the electronic control system (during the operation of the
fan).
Frame
M01 assembly:
VERTICAL air supply
Slight slope
5/1000
To drainage
Siphon drain
Damper
Servomotor
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