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5.3.2
To mount the unit
Make the required ceiling opening for installation in an applicable
place. It maybe necessary to reinforce the suspended ceiling frame
to keep the ceiling frame to keep the ceiling level and to prevent it
from vibrating.
Consult the builder for details.
▪ Ceiling strength. Check whether the ceiling is strong enough to
support the weight of the unit. If there is a risk, reinforce the ceiling
before installing the unit.
▪ For existing ceilings, use anchors.
▪ For new ceilings, use sunken inserts, sunken anchors or other
field supplied parts.
a
Ceiling slab
b
Anchor
c
Long nut or turn-buckle
d
Suspension bolt
▪ Suspension bolts. Use M8~M10 suspension bolts for installation.
Attach the hanger bracket to the suspension bolt. Fix it securely
using a nut and washer from the upper and lower sides of the
hanger bracket.
a
Nut (field supply)
b
Washer (field supply)
c
Hanger bracket
d
Double nut (field supply)
▪ . Adjust the unit to the correct position for installation.
FWE-F
Fan coil units
3P756931-1 – 2023.11
10≤
10≤
(mm)
a
b
c
d
a
b
c
d
▪ Check if the unit is horizontally levelled.
▪ Level. Make sure the unit is level at all 4 corners using a level or a
water-filled vinyl tube.
a
Level
b
Vinyl tube
NOTICE
Do NOT install the unit tilted. Possible consequence: If
the unit is tilted against the direction of the condensate flow
(the drain piping side is raised), water may drip.
5.4
Water piping installation
5.4.1
Preparing water piping
Before performing the water piping work, check the following points:
▪ The maximum water pressure is 1.6 MPa.
The unit is equipped with a water inlet and water outlet for
connection to the water circuit. The water circuit must be provided by
an installer and must comply with the applicable legislation.
▪ The minimum water temperature is 5°C.
▪ The maximum water temperature is 90°C.
▪ Be sure to install components in the field piping that can withstand
the water pressure and temperature.
▪ Provide adequate safeguards in the water circuit to ensure that
the water pressure will never exceed the maximum allowable
working pressure.
▪ Provide a proper drain for the pressure relief valve (if installed) to
avoid any water from coming into contact with electrical parts.
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a
b
Installation and operation manual
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