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Daikin FWR08AF [8/42] Installation and

FWV+FWZ+FWL+FWR+FWM+FWS

Fan coil units

4PW17548-5

Installation and operation manual

Read this manual attentively before starting up the unit. Do

not throw it away. Keep it in your les for future reference.

Improper installation or attachment of equipment or

accessories could result in electric shock, short-circuit,

leaks, re or other damage to the equipment. Be sure only

to use accessories made by Daikin which are specically

designed for the use with the equipment and have them

installed by a professional.

If unsure of installation procedures or use, always contact

your Daikin dealer for advice and information.

The optional EEH (electric heater kit) cannot be mounted on

units which are set up for 2-pipe systems with 4-row coil and

4-pipe systems.

Before installation

Installation and maintenance should be carried out by technical

personnel qualied for this type of machine, in compliance with current

safety regulations.

When receiving the unit please check its state, verifying if any damage

occurred during the transport.

Refer to the relevant technical sheets for installation and use of

possible accessories.

Identify model and version of the unit from the indications stated on the

carton package.

Use and operating limits

Daikin shall not be held liable

- if the unit has been installed by non-qualied personnel,

- if the unit has been used improperly,

- if the unit has been used under conditions that are not permitted,

- if maintenance operations specied in this manual have not been

carried out,

- if non original spare parts have been used.

Keep the unit in its packaging until it is ready to be installed, to prevent

dust getting inside.

Operating limits are shown here below; all other uses are considered

improper:

! thermal uid: water/glycol

! water temperature: 5°C~95°C

! maximum operating pressure: 10 bar

! air temperature: 5°C~43°C

! nominal power supply voltage: 230V - 50 Hz

! ambient air humidity limit: RH<85% non-condensing

Selection of location:

Equipment designed for ambient air conditioning and intended for use

in civil comfort applications.

! do not install the unit in rooms where inammable gases are

present

! do not let water spray directly on the unit;

! install the unit on ceilings or walls that bear its weight. Leave

enough space all around for proper operation and maintenance of

the unit, taking into account all installed optional accessories.

! never place the heating unit immediately under an electric

plug-socket.

dimensions (See gure 1)

Clear space for hydraulic connections

(*)

Slots for wall/ceiling mounting 9 x 20 mm

Clear space for electric connections

(*)

Hydraulic connections (4 DF = 4 pipe system)

Condensate drainage for vertical installation

Air outlet for concealed models

Air suction for concealed models

Condensate draining for horizontal installation

Air outlet

Air inlet

(*)

Indications applicable to units with hydraulic connections on the left side; in case of right side

connections the indications for “clear space” are reversed.

installation

Before installing the fan coil, ensure that:

- The place of installation has sufcient space for containing the

device and for performing installation and maintenance (respect

spaces g. point 2).

- The air inlet and delivery are not obstructed.

- The hydraulic connections are positioned and dimensioned as

requested by the device (g.1).

- The electric power supply line has the features requested on the

fan coil’s data plate.

In normal operation, particularly with the fan at minimum speed and

ambient air with high relative humidity, condensation may form on

the air outlet and on some external parts of the unit. To avoid such

issues while always remaining within the operating limits envisaged

for the unit, it is necessary to limitthe (average) temperature of the

water inside the heat exchanger. In particular, the difference

between the air dew point (TA,DP) and the average water

temperature (TWM) must NOT exceed 14 °C, according to the

following relationship:

TW>TA,DP-14 °C

Example: in the case of ambient air at 25 ° C with 75% relative

humidity, the dew point temperature is about 20 ° C and therefore

the average temperature of the water

in the battery must be greater then:

-20-14 = 6 °C in order to avoid condensation on a fancoil equipped

with a valve.

- 20-12 = 8 °C If the valve kit accessory can not be installed.

In the event the indoor unit is stopped for a prolonged period, with

the fan stopped and circulation of cold water in the heat exchanger,

condensation may also form on the unit’s exterior. In this case it is

advisable to install the 3-way (or 2-way) valve

accessory in order to stop the ow of water in the coil when the fan

is stopped.

Remove the cabinet, where existing, by unscrewing the 4 fastening

screws reachable through the lifted side doors (see gure 2). In case of

FWL and FWR versions, also unscrew the 2 screws on the front panel.

Install the basic unit onto the wall/ceiling using the 4 mounting slots

and the supplied anchor screws, keeping the unit at least 100 mm

above the oor for a proper air suction and an easy pulling out of the

lter in case of FWV, FWZ, FWM and FWS models. In case of ceiling

models FWM, FWS, FWL and FWR verify that the installation height

corresponds to what is specied in gure 3, in order to avoid excessive

hot air stratication in the upper part of the room; in case of greater

installation heights we suggest to proceed with the back suction from

Installation and

operation manual

Fan coil units

FWV+FWZ

FWL+FWR

FWM+FWS

Daikin FWR08AF [8/42] Installation and

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