instruction and operation manual ZHK NANO
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V04-18
Figure 73:
Drain valve
Figure 74:
Vent valve
6.2 Drain for condensate and excess water
Each drain must be equipped with a siphon. Siphons are available as accessories from EURO-
CLIMA.
6.2.1 Standard
siphons
A space-saving design of the necessary siphon height we can do on request. Contact your sales
representative for detailed information.
The following conditions are essential for correct operation:
-
At each drain a siphon must be connected.
-
Several drains may not be connected to one siphon.
-
The water from the siphon must run in a funnel.
-
Before
starting,
fill
the
siphon
with
water.
-
In case of outdoor units an antifreeze mechanism has to be provided on site.
The heights H1, H2 and H3 can be determined from the maximum negative pressure (p) and maxi-
mum pressure (p) in the section of the siphon or be determined by the information on the technical
data sheet as follows:
Total pressure
pges
= 1196 Pa
Dynamic pressure
pdyn
= 83 Pa
Total static pressure pstat = pges
±
pdyn = 1113 Pa
1 mmWS = 9,81 Pa
H1 > 1113/9,81 = 114 mm + 15 mm (Safety) = about 130 mm
H2 = 65 mm
Siphon on suction side (in direction of airflow before the fan), see Figure 75.
H1 (mm) > p (mm WS)
H2 (mm) > p/2 (mm WS)
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