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© STULZ Tecnivel – all rights reserved
EN/11.2020 Technical data subject to modifications
Air Handlers Units
ClimaPac Series
Connecting the unit to the external system
Water remaining from the test run may escape when the protective caps are removed.
• Rinse thoroughly water lines of the external system to ensure water entering the water coil is clean
and free of particles.
• Remove the protective caps of the pipes inlet and outlet.
• Fix the lines of the external system to the lines of the unit. Water inlet/outlet and connection type
are indicated in the table above.
• Insulate the water pipes with the diffucion tight insulating material, to prevent the introduction of
ambient air heat and the formation of condensate at the pipes.
Make sure the external system lines don’t put mechanical stress on the ClimaPac
connection pipes.
Condensate drain
The condensate water drains must be provided with a siphon (see siphon calculation in
4.3.2
Connection of drains
and connected to local waste water system.
If the coil is designed to work with water, the use of an anti-freezing agent might
have an impact on the coil efficiency.
Direct expansion coil (DX)
DX coils are filled with dry nitrogen in factory. When removing the protective caps, the gas shall
escape emitting a hissing noise.
If not, it might indicate there is a leakage in the circuit and measured shall be taken.
DX coil is to be connected to the refrigerant circuit by welding (on the outside of the coil section).
The diameters of the connections must be observed in the installation, in order to avoid possible
pressure loss that would decrease the performance.
4.3.6 Humidifiers
Evaporative humidifier
Water supply and draining (located outside of the unit) are to be connected according to the following
table:
Water supply
Water type
Draining
Diameter
Connection
Diameter
Connection
½’’
External thread
Tap water or threated water
25 mm
PVC female/glue
