Air Handling Unit Installation, Operation And Maintenance Instructions
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5.3- Condensate Drain Lines
Moisture condensed out of the airstreams on cooling / dehumidifying coils should be drained out of the
unit, to prevent water damage in the air handling unit and ductwork system. Following precautions should
be observed in piping of condensate drain lines.
- Condensate pipe connections to drain pan should not be less than the bore size of the pan outlet connec-
tion.
- A union or pipe coupling should be fitted at the pipe connections to the pan to permit easy disconnection
to clean any dirt sediments.
- The siphon (for positive and negative pressure applications) sent by the unit separately should be assem-
bled according to its own installation instructions in the package.
- If the drain pipe is to be long, drain line should be pitched with a gradient not less than 1 in 50.
5.4- Electrical Connections
Electric motor, starters, interconnecting cabling and any associated controls should be properly designed
and selected to be suitable for the driven equipment or other electrical apparatus, to be safe and to comply
with the requirements of Electricity Supply Authority. In case of the humidifier and frequency converter
applications their own installation manuals should be used. For the other equipments the installation
instructions and the wiring diagrams which stuck in the terminal box should be followed.
The equipments in the unit except lighting operate with 400V, 3Ph, 50Hz electric supply. Standard lighting
equipment operates with 230V, 1Ph, 50Hz electric supply.
siphon for positive pressure
siphon for negative pressure
H(mm)=
P
10
H
+ 5
0 m
m
H
1,5
x
H
1,5
x
H
+ 6
0
( ball type siphon )
P= maximum static pressure in unit, Pa
Содержание FourSeason KKS 062 - 046
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