13
OIMM – VENTUS PRO
Moisture condensed out of the airstream on cooling or dehumidifying coils should be drained out from the unit
in order to sustain the proper use of the air handling unit and the ductwork system. Following precautions should
be observed in piping of condensate drain lines.
Connection of electric AHU elements should be carried out by qualified personnel and should be done in
accordance with any standards and regulations being in force in a country where the unit is installed. Cross-
section and type of cables (e.g. shielded cable) feeding individual functional segments should be selected
basing on nominal current and specific operation conditions (e.g. ambient temperature, way of cabling, distance
from the power supply).
All connections which are field made by a contractor shall be conducted in accordance with delivered together
with ahu diagrams.
Before starting connecting power supply, check conformity of the voltage and frequency of a supply network
with the data shown on the device's rating plate. Permissible fluctuation of the supply voltage and its frequency
to the values shown on the rating plate is ±5%. If discrepancy exists, the device cannot be connected.
CONDENSATE DRAIN LINES
ELECTRIC CONNECTIONS
3.6.3
3.6.4
!
The bore size of the pan outlet connection should not be less than the pipe connection of the
drain pan.
!
A union or pipe coupling should be fitted at the drain pan pipe connections to permit easy
disconnection for cleaning any dirt sediments.
!
The siphon (for positive and negative pressure applications) which is sent separately in the unit
should be assembled according to the installation instructions given below.
!
»
Drainage U-trap connection
•
Negative pressure
H= [(-)Pa / 10] + X
PVS 3-6
-> X =50 mm
PVS 6-6 - 15-15
-> X= 40 mm
PVS 15-18 – 37-40 -> X = 30 mm
•
Positive pressure
H= (Pa / 10)
X= (1,5 x H) + 40
R= X + 75
AB= R - A
Z = 80 mm
-> A = 40 mm
Z = 120 mm
-> A = 60 mm
Z =200 mm
-> A = 140 mm
