Water Trap Installation For A Unit Section Mounted On The Suction Side; Water Trap Installation For A Unit Section Mounted On The Pressure Side - Komfovent DOMEKT Series Installation And Service Manual

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4.1.1. Water trap installation for a unit section mounted on the suction side

Since the fans in most air handling units are last in the chain of functions and generate sub-atmos-
pheric pressure inside the unit,it is very important to correctly install the water trap. Because of that rea-
son condensate can be hardly eliminated from the air handling unit and the technical premise may get
covered with condensate. Height H
inside the unit in mm water gauge. Height H
inside the unit in mm water gauge.
Condensate
Precaution: The drainage siphon should be mounted on the outlet fitting pipe
of every drip tray for complete condensate drainage from the air handling unit and
prevention of penetration of offensive odours from an effluent into the ventilation
system.
In case of the outdoor operation of the air handling unit, the siphon and the bleed-
ers should be heated with an electric thermal cable (if ambient air temperature
t < 0 °C). The siphon and the bleeders should be heat-insulated with an insulat-
amb
ing material.

4.1.2. Water trap installation for a unit section mounted on the pressure side

Since the fans in most air handling units are not last in the chain of functions and generate over-
atmospheric pressure inside the cooling section. In such case the consisted condensate can be easily
removed from AHU and there will be no strict requirements for siphon's installation. A drainage siphon
is enough with a minimum rake.
RECOMMENDATION: The drainage siphon must be installed in connection with not less size pipe
diameter.
Any drainage systems must not be connected directly to the municipal sewage system. The conden-
sate tray shall be easily accessible for cleaning and disinfection.
18
must be at least equivalent in mm to half of the negative pressure
1
must be at least equivalent in mm to the negative pressure
2
H , H
1 2
140-310
UAB KOMFOVENT we reserve the right to make changes without prior notice
Condensate
H
2
H
1
D_21-03