Kentatsu KFHC12H0EN1 User manual

Thank you very much for purchasing our fan coil unit,
Before using your unit, please read this manual carefully and keep it for future reference.
INSTALLATION&OPERATION MANUAL
FAN COIL UNITS
MODELS:
(R410A) KFHC12H0EN1
KFHC20H0EN1
KFHC25H0EN1
KFHC30H0EN1
KFHC38H0EN1
KFHC48H0EN1
KFHC57H0EN1
KFHC65H0EN1
KFHC78H0EN1
KFHE12H0EN1
KFHE20H0EN1
KFHE25H0EN1
KFHE30H0EN1
KFHE38H0EN1
KFHE48H0EN1
KFHE57H0EN1
KFHE65H0EN1
KFHE78H0EN1
DK14-03.01.27

1
CONTENT PAGE
I&O manual
PRECAUTION...........................................................................1
USER....................................................................................................2
INSTALLATION AND MAINTENANCE.......................................................6
DIMENSIONS...................................................................12
SPECIFICATION............................................................................14
Be sure to be in conformity with the local, national and
international laws and regulations.
Read "PRECAUTIONS" carefully before installation.
The following precautions include important safty items.
Observe them and never forget.
Keep this manual in a handy place for future reference.
Before out from factory, FAN COIL UNIT (AIR UNITS) has
passed Fan Coil Overpressure Resistant Test, Statically
and Dynamically Balanced Adjustment, Noise Test, Air
(cool) Volume Test, Electric Property Test, Outline Quality
Detection.
1. PRECAUTIONS
The safety precautions listed here are divided into two categories. In
either case, important safety information is listed which must be read
carefully.
WARNING
After completing the installation, make sure that the unit operates
properly during the start-up operation. Please instruct the customer
on how to operate the unit and keep it maintained.
Be sure only trained and qualified service personnel to
install, repair or service the equipment.
Improper installation, repair, and maintenance may result in
electric shocks, short-circuit, leaks, fire or other damage to
the equipment.
Failure to observe a warning may result in death.
Failure to observe a caution may result in injury or
damage to the equipment.
CAUTION
WARNING
Install according to this installation instructions strictly.
If installation is defective, it will cause water leakage,
electrical shock and fire.
When installing the unit in a small room, take measures
against to keep refrigerant concentration from exceeding
allowable safety limits in the event of refrigerant leakage.
Contact the place of purchase for more information.
Excessive refrigerant in a closed ambient can lead to oxygen
deficiency.
Use the attached accessories parts and specified parts
for installation.
otherwise, it will cause the set to fall, water leakage,
electrical shock and fire.
The appliance must be installed 2.3m above floor.
The appliance shall not be installed in the laundry.
Before obtaining access to terminals, all supply circuits
must be disconnected.
The appliance must be positioned so that the plug is
accessible.
The enclosure of the appliance shall be marked by word,
or by symbols, with the direction of the fluid flow.
For electrical work, follow the local national wiring
standard, regulation and this installation instructions. An
independent circuit and single outlet must be used.
If electrical circuit capacity is not enough or defect in
electrical work, it will cause electrical shock fire.
Use the specified cable and connect tightly and clamp
the cable so that no external force will be acted on the
terminal.
If connection or fixing is not perfect, it will cause heat-up or
fire at the connection.
Wiring routing must be properly arranged so that control
board cover is fixed properly.
If control board cover is not fixed perfectly, it will cause
heat-up at connection point of terminal, fire or electrical
shock.
If the supply cord is damaged, it must be replaced by the
manufacture or its service agent or a similarly qualified
person in order to avoid a hazard.
An all-pole disconnection switch having a contact
separation of at least 3mm in all poles should be
connected in fixed wiring.
When carrying out piping connection, take care not to let
air substances go into refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high
pressure in the refrigeration cycle.
Do not modify the length of the power supply cord or use
of extension cord, and do not share the single outlet with
other electrical appliances.
Otherwise, it will cause fire or electrical shock.
If the water leaks during installation, ventilate the area
immediately.
After completing the installation work, check that the
water does not leak.
The cool water in the unit is not lower than 3℃, hot water is
not higher than 65℃. Water in the unit must clean, air quality
must meet to the standard of PH=6.5~7.5.

2. USER
2
2.1 Machine description
The fan-coil unit for the threatment of air in indoor
environments,available in versions with casing,versions for
building-in.
2.1.1 Standard conditions of use
The fan-coil unit is intended for the treatment of air(summer and
winter climatisation)inside buildings used for domestic or similar
purposes.The unit is not designed for installation in roomsused
for laundry purposes.
CAUTION
DANGER!
The machines are designed for indoor installation for use in
domestic or similar environments.
DANGER!
Do not introduce objects through the air intate or delivery
grilles.
IMPORTANT!
The unit will function correctly only if the instructions for use
are scrupulously followed,if the specified clearances are
complied with during installation and if the operating
restrictions indicated in this manual are strictly adhered to.
IMPORTANT!
If clearance distances are not maintained at installation,it
could cause maintenance difficulties and reduction in
performance.
I&O manual
2.1.2 Construction features
1. Connections for standard coil;
2. Fixing slots;
3. Defrosting tray;
4. Condensate discharge;
5. Air filter;
6. Blower;
7. Coils;
Fig.2-1
DISPOSAL：Do not dispose this product as unsor-
ted municipal waste. Collection of such waste sepa-
rately for special treatment is necessary.
Ground the air conditioner.
Do not connect the ground wire to gas or water pipes,
lightning rod or a telephone ground wire.Incomplete
grounding may result in electric shocks.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in
electric shocks.
Connect the outdoor unit wires , then connect the indoor
unit wires.
You are not allow to connect the air conditioner with the
power source until wiring and piping the air conditioner is
done.
While following the instructions in this installation
manual, install drain piping in order to ensure proper
drainage and insulate piping in order to prevent
condensation.
Improper drain piping may result in water leakage and
property damage.
Install the indoor and outdoor units, power supply wiring
and connecting wires at least 1 meter away from
televisions or radios in order to prevent image
interference or noise.
Depending on the radio waves, a distance of 1 meter may not
be sufficient enough to eliminate the noise.
This appliance is not intended for use by persons
(including children) with reduced physical,sensory or
mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the appliance by a person responsible
for their safety.
Don't install the air conditioner in the following locations:
There is petrolatum existing.
There is salty air surrounding (near the coast).
There is caustic gas (the sulfide, for example) existing
in the air (near a hot spring).
The Volt vibrates violently (in the factories).
In buses or cabinets.
In kitchen where it is full of oil gas.
There is strong electromagnetic wave existing.
There are inflammable materials or gas.
There is acid or alkaline liquid evaporating.
Other special conditions.
CAUTION

2.1.3 Versions with casing
2.1.4 Built-in version II KFHE
Supply voltage 220-240V~ 1ph 50Hz;
Finned coil type heat-exchanger consisting of copper tubes and
aluminium fins,with connections on the left reversible to fit on
the right.
Three-speed centrifugal blower with aluminium blades statically
and dynamically babanced. Diretly-coupled motor equipped
with internal thermal protection and condenser permanently in
circuit.
Casing in pre-painted galvanised steel sheet,clad in a protective
film of PVC,complete with the-rmoacoustic insulation,grilles in
heat-resistant ABS polymer with fixed vanes.
Condensation collection tray with natural drainage,complete
with anti-condensation insulation.
Mesh filter in regenerable polypropylence.
VERSION II
VERSION I KFHC
Supply voltage 220-240V~ 1ph 50Hz;
Finned coil type heat-exchanger consisting of copper tubes and
aluminium fins,with connections on the left reversible to fit on
the right.
Three-speed centrifugal blower with aluminium blades statically
and dynamically babanced.
Diretly-coupled motor equipped with internal thermal protection
and condenser permanently in circuit.
Structure in galvanised sheet steel..
Condensation collection tray with natural drainage,complete
with anti-condensation insulation.
Mesh filter in regenerable polypropylence.
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I&O manual
2.1.5 Restrictions on use
CAUTION
IMPORTANT!
The machine has been designed and built solely and
exclusively to function as a ceiling-mounted air-handling
terminal,supplied through ducting or panelling;any other use
is expressly prohibited.
Installation of the machine in an explosive environment is
also forbidden.
Fig.2-2
Fig.2-4
2.1.6 OPERATION RANGE
Use the system in the following temperature for safe and
effective operation.
Cooling operation
Heating operating
(cooling only
type without)
Mode
Temperature Outdoor
temperature Room temperature water inlet temperature
0°C～30°C
17°C～32°C
30°C～65°C
3°C～20°C
-15°C～24°C
0°C～43°C
NOTE
1
2
3
4
If air conditioner is used outside the above conditions, it
may cause the unit to function abnormally.
The phenomenon is normal that the surface of air
conditioning may condense water when the relative larger
humidity in room, please close the door and window.
Optimum performance will be achieved within these
operating temperature range.
Water system operating pressuer: Max: 1.6MPa, Min:
0.15MPa.

4
CAUTION
IMPORTANT!
Pay the utmost attention to the signs and symbols located on
the appliance.
CAUTION
IMPORTANT!
IMPORTANT!
In the case of a water supply with a particularly high content
of hard water salts,it is advisable to fit a water softener.
2.1.7 Information about further risks and unavoidable hazards
If any risks remain is spite of the provisions adopted,or if
there are any potential or hidden risks,there are indicated by
adhesive labels attached to the machine.
INSTALLATION PLACE INSTRUCTION
Controller installation place
(For suspending mounted, it is not allow to install the cabinet at here.)
According to the users' need,controller can be installed in left
side, right side or wall-fixed.
Thedetailsofinstallationmethodsaccordingtothe
installation manual for controller.
I&O manual
For safety, please shut off the power before maintenance.
Only use original spare parts and accessories.The company
shall not be held liable for damage caused by tampering or
work carried out by unauthorised personnel or malfunctions
caused by the use of non-original spare parts or accessories.
Start/stop the unit.
Select between the three blower speeds.
Thermostat adjustment and maintenance of the desired ambient
temperature.
Switching between operationg modes:cooling and heating.
Constant ventilation control.
Specific instructions for use are supplied with the controllers
themselves.
The following operations can be carried out using the control
panels:
2.1.8 Prolonged shutdown
CAUTION
IMPORTANT!
If the unit is not used during the winter period,the water
contained in the system may freeze.
If the machine is going to be out of use for long periods of
time,it is necessary to disconnect the unit from the mains by
opening the main switch (which is required to be fitted by the
installer).
If the unit is not used during the winter period,the water
contained in undertaken in good time.
Alternatively,a suitable quantity of anti-freeze should be
mixed with the water.
Cooling Heating
Fig.2-7
Fig.2-5
Fig.2-6
LOWMIDHIGHSH
black
blue
Fan motor
TV3a
3-way
valve
FAN COIL UNIT CONTROLLER
NL
POWER
blue
black
butted plug
butted plug
orange blue yellow
blue
brown
brown yellow white black red
brown yellow white black red