CYBERHANDLER 2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
EN/05.2019 © STULZ GmbH – all rights reserved
23
Siphon calculation
The siphon height H (mm) must be enough to overcome the static pressure inside the unit
The minimum height of the siphon must be equal to 2H, calculating H according to the following
formula:
Fig. 6-13: Siphon for positive pressure
Fig. 6-14: Siphon for negative pressure
H (mm)=
P(Pa)
10
P: total pressure (positive or negative) of the unit fan
In order the siphon work properly, do not connect several water outlets to the same
siphon.
6 4 3 Cooling Coil (version CWT/CWR/DXT/DXR)
The CyberHandler2 unit can be equipped with chilled water coil (CWT/CWR) or direct expansion
coil (DXT/DXR).
Chilled water coils (for CWR and CWT models) are to be connected to a cool water production
system (e.g. chiller) according to table here below.
Inlet/Outlet
Draining
Coils connections (examples)
Diameter
Connection
Diameter
Connection
Up to 2,5”
Thread GAS
¾”
Thread GAS
Greater than
2,5”
Flanges
¾”
Thread GAS
Water
outlet
Water
inlet
Air
direction
Air
direction
Thread
Flanges
We recommend to insulate the pipes of the external system, if they come into contact with
external air, to prevent the introduction of heat from the ambient air as well as possible
