Connections / Electrical Wiring Diagrams - Technibel CWX Series Installation Instructions Manual

4 - CONNECTIONS / ELECTRIC WIRING DIAGRAMS
4.1 - HYDRAULIC CONNECTION
• 1/2" (CWX 3-5 MODELS) 3/4" (CWX 6-8-10 MODELS) female gas connections on the unit.
GB
- Water inlet: lower connection.
- Water outlet: upper connection.
• For cold water use, a control valve must be installed, otherwise there is a risk that the condensate tank may
overflow if the unit shuts down due to a thermostat disconnection or in case of condensate pump failure (for
valve installation, refer to the "Accessories" paragraph).
Important: Securely hold the unit's connections with a wrench while tightening in order to avoid
twisting the tubes inside the unit.
• Carefully insulate the water inlet and outlet tubes as well as the elements installed on the network (shut-off
valves, ...).
Use material that is adapted to the installation conditions and water system.
• The unit is equipped with an air bleeder above the connections. Depending on the installations, other bleeders
may be required on the hydraulic network.
4.2 - CONDENSATE CONNECTION
CWX 3-5 MODELS
• Connect a rigid PVC pipe (4) with OD 18 mm, on the unit's drain
connection (2) using a piece of flexible hose (2). Secure it with clamps
(3). (figure 05)
CWX 6-8-10 MODELS
• Connect the supplied flexible hose (2) to the unit's drain fitting (1) and
secure it with the clamp (3) provided. Do not force the drain fitting.
• Connect a rigid PVC pipe (4) on the end of the hose (2) and secure it
with the clamp (3) provided.
Note : secure the clamps while ensuring that the screws are facing
upward (figure 05).
ALL MODELS
• Carefully insulate the hose with polyethylene foam.
• Be aware of the risk of freezing in false ceilings during the winter.
• If necessary, the condensate tube can be raised immediately after the
unit's outlet. Max. height: 25 cm (figure 06).
• Make sure that the drain line has a slight slope in the flow direction and
that it does not form a siphon (figure 06).
• The tube must be held with supports (figure 07).
• Do not install air intakes (figure 08).
• The line must not have an upward slope near the outlet.
There is a risk that water may flow back when the unit is off. (figure 09).
figure 09
4.3 - FRESH AIR CONNECTION CWX 3-5
• The unit can be connected to an outside air inlet conduit (17).
• The additional fan motor for the outside air intake is equipped with a separate electric power supply and can be
controlled by means of a two-pole On/off switch with an electrical protection device.
• To avoid operating and noise-related problems, the new air output should represent approximately 10% of the
total air output.
- Open the knock-out (18), secure a Ø70mm flange on the unit and connect the thermal insulated conduit.
- On the exterior, install a grille with filter to prevent drawing in dust and debris which could clog the unit's
exchanger.
6
figure 08
CWX 3-5
3
2
4
1
figure 05
CWX 6-8-10
1 3
figure 05
12 cm max. (CWX 3-5)
30 cm max. (CWX 6-8-10)
as short as possible
2% min.
25 cm max.
figure 06
14
figure 07
4
2