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a
Connection pipe
5.2.2
To fill the water circuit
1 Open the cap.
2 Push the pressure relief valve to purge air from the unit water
circuit(s).
3 Close the cap.
4 Additional filling with water afterwards might be required (but
never through the air purge valve).
a
b
a
Air purge
b
Pressure relief valve
c
Cap
FWE03~11D
Fan coil units
3P443944-5P – 2021.12
a
c
NOTICE
▪ Air in the water circuit can cause malfunctioning. During
filling, it may not be possible to remove all the air from
the circuit. Remaining air will be removed through the
automatic air purge valves during the initial operating
hours of the system. Additional filling with water
afterwards may be required.
▪ To purge the system, use the special function as
described in "6 Commissioning" [ 4 23].
NOTICE
Make sure water quality complies with EU directive
2020/2184.
5.2.3
Installation of the valve kits
NOTICE
Make the wiring according to the wiring diagram of the
remote controller.
INFORMATION
Below graphics show 4-pipe models. 2-pipe models are
connected in the same way.
2 way ON/OFF valve kit
NOTICE
In case the 2-way valve is used in the vertical position, the
actuator (a) positions must be adjusted as shown below.
Model
Option kit
K
value (m
vs
2 pipe/2 way
E2V2VN01V3WA
4 pipe/2 way
E2V4VN01V3WA
1 Wrap teflon tape (field supply) on the end of the water pipe (a)
and connect it to the water inlet line.
5 Installation
205 mm
a
3
/h)
Max. operation
Actuator power
pressure PN (bar)
supply
2.8
16
1 Ph 230 V,
50~60 Hz NC
(Normally closed.)
Installation manual
15
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