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Prepare the installation of the fan coil unit
Sensor
Identification code
Remote temperature
KRCS01-4
sensor
Timer
Identification code
Schedule timer
DST301BA51
(a)
For installation of these options, an installation box option kit may be required. See
option list in the data book for more information.
Valves
Identification code
2-way valve
EKMV2C09B7
(ON/OFF type)
3-way valve
EKMV3C09B7
(ON/OFF type)
Electronic circuits
Identification code
Valve control PCB
EKRP1C11
Optional PCB for
EKFCMBCB7
Modbus connection
Wiring adaptor for
KRP4A(A)53
electrical appendices
KRP2A52
(a)
For installation of these options, an installation box option kit may be required. See
option list in the data book for more information.
Prepare the installation of the fan coil unit
3.2.
Verify the appropriate installation location
When selecting the installation location, take into account the
instructions as mentioned in the following paragraphs of this chapter.
Select an installation location where the following conditions are
fulfilled:
the space around the unit is adequate for maintenance and
servicing. See figure 2: "Space required for installation".
the space around the unit allows sufficient air circulation and air
distribution. See figure 2: "Space required for installation".
the unit may be installed on ceilings up to 4.2 m. However, it
becomes necessary to make field settings using the remote
controller when installing the unit at a height over 3.2 m.
Install the unit where the height of the decoration panel is more
than 2.5 m to avoid accidental touching.
the air passage is not blocked.
the condensate water can be properly drained.
the installation location is frost-free.
the unit can be installed horizontally.
the unit must be installed as far away as possible from
fluorescent lights or other sources that possibly interfere with the
signal of wireless remote controllers.
See figure 2: "Space required for installation"
a
Air outlet
b
Air inlet
Installation manual
3
Description
Replacement sensor
to measure
temperature remotely
from a location other
than that in which the
controller is installed.
Description
(a)
Controller with
schedule timing
functionality.
Description
Electronic 2-way
valve to control the
water supply
(+EKRP1C11).
Electronic 3-way
valve to control the
water supply
(+EKRP1C11).
Description
(a)
Mandatory electronic
circuit when 2-way or
3-way valve is used.
(a)
Electronic circuit with
Modbus interface
connections.
Electronic circuit with
additional
(a)
connections for
external input/output
signals.
Information
Leave 200 mm or more space where marked with *, on
sides where the air outlet is closed.
Refer to figure 2: "Space required for installation".
Information
The equipment is not intended for use in a potentially
explosive atmosphere.
Prepare the installation of the fan coil unit
3.3.
Prepare the installation space
When preparing the installation space, use the paper pattern for
installation which is delivered with the unit. More information on
how to prepare the ceiling opening can be found in chapter
"Prepare the ceiling opening" on page
When the conditions in the built-in space are exceeding 30°C and
exceeding a relative humidity of 80%, or when fresh air is
inducted into the ceiling, an additional insulation is required on
the outside of the unit (minimum 10 mm thickness polyethylene
foam).
Prepare the installation of the fan coil unit
3.4.
Prepare the water piping work
The unit is equipped with a water inlet and water outlet for connection
to a water circuit. The water circuit must be provided by an installer
and must comply with the applicable legislation.
Notice
The unit is only to be used in a closed water system.
Application in an open water circuit can lead to excessive
corrosion of the water piping.
Before performing the water piping work, check the following points:
the maximum water pressure is 10 bar,
the minimum water temperature is 5°C,
the maximum water temperature is 50°C (2-pipe fan coil units)
and 70°C (4-pipe fan coil units),
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 be sure 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 coming into contact with electrical parts,
be sure that the water flow rates are according to the table below,
Minimum water
FWC06-09B7TV1B
FWC06-09B7FV1B
Table 3.1: Maximum and minimum water flow
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 drainage 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. A manual air purge valve is mounted onto the unit,
always use materials which are compatible with the water and a
maximum of 40% volume glycol,
select piping diameter in relation to required water flow and
available ESP (External Static Pressure) of the system pump.
Prepare the installation of the fan coil unit
5.
Maximum water
speed (l/min.)
speed (l/min.)
5.4
36
5.4
36 cooling coil +
18 heating coil
Fan coil units
4PW64525-1B – 2014.03
FWC
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