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5 Unit installation
▪ Provide shut-off valves at the unit so that normal servicing can be
accomplished without draining the system.
▪ Provide drain taps at all low points of the system to permit
complete draining of the circuit during maintenance or service to
the unit.
▪ Provide air purge valves at all high points of the system. The
valves shall be located at points which are easily accessible for
servicing.
▪ Pipework shall be protected from physical damage.
NOTICE
Make sure water quality complies with EU directive
2020/2184.
NOTICE
Use of glycol is allowed, but the amount shall NOT exceed
40% of the volume. A higher amount of glycol may cause
damage to the hydraulic components.
5.4.2
Connecting water piping
CAUTION
Always use valves to control water circulation in the unit. If
the fan coil unit is off, but water keeps circulating in the
unit, condensation will form on the unit and water may drip.
NOTICE
Do not use excessive force when connecting the piping.
This could deform the unit piping. Deformation of the piping
can cause the unit to malfunction.
NOTICE
Make sure to insulate all piping. Any exposed piping might
cause condensation.
DANGER: RISK OF BURNING/SCALDING
a b
e
a
Heating air purge
b
Cooling air purge
c
Hot water inlet (3/4ʺ female BSP)
d
Hot water outlet (3/4ʺ female BSP)
e
Cooling inlet (3/4ʺ female BSP)
f
Cooling outlet (3/4ʺ female BSP)
Installation and operation manual
10
c
d
f
a b c d
e f
a
Heating air purge
b
Cooling air purge
c
Hot water inlet (DN3/4ʺ)
d
Hot water outlet (3/4ʺ female BSP)
e
Cooling inlet (DN3/4ʺ)
f
Cooling outlet (3/4ʺ female BSP)
a b
c
d
e
f
a
Cooling air purge
b
Heating air purge
c
Hot water inlet (DN3/4ʺ)
d
Hot water outlet (DN3/4ʺ)
e
Cold water inlet (DN3/4ʺ)
f
Cold water outlet (DN3/4ʺ)
a b
d
c
e f
a
Heating air purge
b
Cooling air purge
c
Hot water inlet (DN3/4ʺ)
d
Hot water outlet (3/4ʺ female BSP)
e
Cooling inlet (DN3/4ʺ)
f
Cooling outlet (3/4ʺ female BSP)
FWE-F
Fan coil units
3P756931-1 – 2023.11
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