Western Airconditioning Doppio 4 Technical document

Western Airconditioning B.V. Tel. [phone] www.western.nl
DOPPIO (EXCLUSIVE)
hybrid fancoil
Technical information manual
Technical information manual

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Index
1. GENERAL INFORMATION 3
1.1 FUNDAMENTAL SAFETY RULES 3
1.2 SAFETY PRECAUTIONS 4
2. TECHNICAL FEATURE 5
2.1 PARTICULAR DESCRIPTION AND MAIN COMPONENTS 5
2.2 TECHNICAL DATA 6
2.3 DIMENSIONS AND WEIGHTS 7
3. BEFORE INSTALLATION 8
3.1 ACCESSORY 8
3.2 SAFETY CONSIDERATIONS 8
3.3 OPERATING LIMITS 8
3.4 BEFORE INSTALLATION 9
3.5 SELECT LOCATION 9
4. INSTALLATION 10
4.1 POSITIONING THE UNIT 10
4.2 PLUMBING CONNECTION SIDE 11
4.3 WALL MAP 13
4.4 ELECTRICAL CONNECTION SIDE 15
4.5 INSTALLATION METHOD 17
4.6 FIX RADIATOR, COVER AND ALL THE METAL SHEET 34
4.7 HOW TO ACCESS AIR VENT AND WATER PURGE 36
5. ADDITIONAL INFORMATIONS 37
5.1 THERMOSTATIC+2 WAY VALVE BOX KIT 37
5.2 THERMOSTATIC +3 WAY BY PASS VALVE BOX KIT 38
5.3 4-PIPES 3 WAY BY PASS VALVE BOX KIT 40
5.4 CATALITIC FILTER 42
5.5 METAL WALL MAP 42
5.6 HUMIDISTAT KIT 43
5.7 WALL PAD KIT 44
6. NOTE FOR THE FINAL CUSTOMER AND MAINTENANCE 45
7. TABLE OF ANOMALIES AND REMEDIES 52

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1. GENERAL INFORMATION
Thank you for choosing this excellent and innovative Fan coils –Radiator for controlling the climate in your
home.
This product is Patent BS BS2007A000147 and protect from any imitations.
Please read this instruction use and installation manual carefully before installing and starting up the appliance.
Following the indications contained in this manual will ensure that the appliance continues to function
perfectly over time.
This appliance must be installed by an authorized installer who, on completion of the work, will release a
declaration of conformity to the client in respect of the laws in force and the indications given by Manufacturer
in the instructions leaflet supplied together with the appliance. These appliances have been designed both for
conditioning and/or heating environments and must be destined for this use only and compatibly with their
performance characteristics. Manufacture accepts no responsibility, either contractual or extra contractual, for
any damage caused to persons, animals of property as a result of incorrect installation, adjustment or
maintenance or improper use.
This instruction leaflet is an integral part of the appliance and consequently must be kept carefully and must
ALWAYS accompany the appliance, even when it is passed to a new owner or user or transferred onto another
system. If it is lost or damaged, please contact the Manufacturer customer service .
All repair or maintenance interventions must be performed by the technical service department or by
professionally qualified personnel as foreseen in this booklet. Do not modify or intervene on the appliance as
this could create dangerous situations and the manufacturer will not be responsible for any damage caused.
1.1 FUNDAMENTAL SAFETY RULES
Remember that some fundamental safety rules should be followed when using a product that uses electricity
and water, such as:
It is forbidden for the appliance to be used by children or unassisted disabled persons.
It is forbidden to touch the appliance with wet hands or body when barefoot.
It is forbidden to carry out any cleaning before having disconnected the appliance from the electricity
mains supply by turning the system master switch to "OFF".
It is forbidden to modify the safety or adjustment devices or adjust without authorization and
indications of the manufacturer.
It is forbidden to pull, cut or knot the electrical cables coming out of the appliance, even if it is
disconnected from the mains supply.
It is forbidden to poke objects or anything else through the inlet or outlet grills.
It is forbidden to open the doors which access the internal parts of the appliance without first turning
the system master switch to "OFF".
It is forbidden to dispose of or leave in the reach of children the packaging materials which could
become a source of danger.
It is forbidden to climb onto the appliance or rest any object on it.
The external parts of the appliance can reach temperatures of more than 70°C.

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DANGER FROM BURNS - TAKE CARE WHEN TOUCHING
1.2 SAFETY PRECAUTIONS
Installing, starting up, and servicing water terminal can be hazardous due to system pressure, electrical
components, and equipment location, etc.
Only trained, qualified installers and service personnel are allowed to install, start-up, and service this
equipment. Untrained personnel can perform basic maintenance functions such as cleaning coils. All other
operations should be performed by trained service personnel.
When handling the equipment, observe precautions in the manual and on tags, stickers, and labels attached to
the equipment. Follow all safety codes. Wear safety glasses and work gloves. Keep quenching cloth and fire
extinguisher nearby when brazing. Read the instructions thoroughly and follow all warnings or cautions in
literature and attached to the unit. Consult local building codes and current editions of national as well as local
electrical codes. Recognize the following safety information: Incorrect handling could result in personal injury
or death. Incorrect handling may result in minor injury, or damage to product or property.
All electric work must be performed by a licensed technician according to local regulations and the instructions
given in this manual. Before installing, modifying, or servicing system, main electrical disconnect switch must
be in the OFF position. There may be more than 1 disconnect switch. Lock out and tag switch with a suitable
warning label. Never supply power to the unit unless all wiring and tubing are completed, reconnected and
checked. This system adopts highly dangerous electrical voltage. Incorrect connection or inadequate grounding
can cause personal injury or death. Stick to the wiring diagram and all the instructions when wiring. Have the
unit adequately grounded in accordance with local electrical codes. All installation or repair work shall be
performed by your dealer or a specialized subcontractor as there is the risk of fire, electric shock, explosion or
injury.
Properly insulate any tubing running inside the room to prevent the water from damaging the wall.
Make a proper provision against noise when the unit is installed at a telecommunication center or
hospital.
Provide an electric leak breaker when it is installed in a watery place.
Never wash the unit with water.
Should any emergency occur, stop the unit and disconnect the power immediately.
Handle unit transportation with care. The unit should not be carried by only one person if it is more
than 20kg.
Never touch the heat exchanger fins with bare hands.
Do not have the unit operate without air filter.
BEFORE AND DURING THE STARTING UP OF THE UNIT (SO WHEN THE UNIT IS ON AND THE VALVE IS
OPENED), VERIFY THE ABSENCE OF WATER LEAKAGE IN ALL PIPES AND HYDRAULIC CONNECTIONS IN
BOTH INTERNAL AND EXTERNAL PART OF THE UNIT.

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2. TECHNICAL FEATURES
2.1 PARTICULAR DESCRIPTION AND MAIN COMPONENTS
Supporting structure in high resistance
galvanized and epoxy polyester painted steel
sheet.
Heat exchange battery made in copper pipes
and aluminum fins with high efficiency
turbulence and oxidation treatment .
Frontal Radiator ; made in steel or aluminum
epoxy polyester painted , the particular
shape supply high efficiency and high
thermal inertia in heating mode .
Ventilating unit consisting of a radial fan
with special patent blade in ABS glass fiber
reinforced (extremely quiet) mounted on
anti-vibration supports in EPDM, balanced
statically and dynamically, and splined
directly onto the motor shaft .
Low consumption Electric motor, single
phase with resin-coated coil mounted on
anti-vibration supports in EPDM.
Primary and catalytic filter , big filter surface with
low air speed to obtain maximum filter efficiency
Static switch, 0 dB(A) in heating mode
Display

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2.2 TECHNICAL DATA
Model
Doppio 2 (EX)
Doppio 4 (EX)
Number of fan blowers
Single
Dual
Cooling capacity(max)
7-12℃
W
2169
3585
16-22℃
554
707
Heating capacity(max)
50℃
W
2498
3763
70-60℃
4237
6528
75-65℃
4765
7357
45-40℃
2023
3136
35-30℃
915
1418
Air flow
Min
m3/h
150
250
Max
400
750
Sound power
Min
dB(A)
0
0
Max
54.1
56.3
Sound pressure at 1m
Min
dB(A)
0
0
Max
47.9
50.1
Power supply
(V/Ph/Hz)
230/1/50
230/1/50
Max Fan motor power
W
45
98
Cooling water flow rate
L/h
376
616
Cooling water pressure drop
kPa
16.8
32.3
Cond. Drain connection O.D.
mm
16.5
16.5
Coil water content
liter
1.1
1.8
Radiator water content
liter
3.03
5.05
Water connection
IN/OUT
in
3/4"
3/4"
1. Eurovent Certified Specification.
2. Standard Cooling Capacity is tested under the condition 27 °C Dry Bulb /19.5 °C Wet Bulb entering air
temperature, 7 °C entering water and 12 °C leaving water temperature with water flow rates specified.
3. Standard Heating Capacity is tested under the condition 20 °C Dry Bulb entering air temperature, 50 °C entering
water temperature with water flow rates same as for the cooling test +radiator.
4. Air flow measured with clean filter
5. Sound power measured according to ISO 3741:1998

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2.3DIMENSIONS AND WEIGHTS (2 AND 4 PIPES VERSION)
Model
A ( mm )
B ( mm )
C ( mm )
KONRAD KRA-2.0EX
757
166
578
KONRAD KRA-4.0EX
757
166
894
Net weight (without water)
Kg
KONRAD KRA-2.0EC
32
KONRAD KRA-4.0EC
52

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3. BEFORE INSTALLATION
3.1 ACCESSORY
First check the contents inside package. Factory supply all accessory necessary for installation.
Standard and optional accessory List :
N° 1 Wall bracket (standard)
N° 1 Drainage pipe (standard)
N° 1 User and installation manual(standard)
N° 1 Template wall map (standard)
N° 1 Special wrench tooling and Allen key (standard)
N.2 flexible pipe with N° 1 H shape connection valve and stop valves (optional)
The appliance should be installed in accordance with national wiring regulation.
3.2 SAFETY CONSIDERATIONS
When working on air conditioning equipment, observe precautions in this manual, and on plates and
tables attached to the unit. Follow all safety codes and other safety precautions that may apply.
Installing and servicing air conditioning equipment should be done by trained and qualified service
personnel only. Untrained personnel can perform only basic maintenance functions such as cleaning
coils, filters and replacing filters.
Ensure that the electrical supply and frequency are adequate for the operating current required for
this specific installation.
WARNING- Before any service or maintenance operations turn off the main power switch.
The manufacturer denies any responsibility and warranty shall be void if these installation instructions
are not observed.
Never switch off the power main supply when unit is operating in the cooling cycle. To switch off the
fan coil unit use only the ON-OFF button.
This avoids over-flow in the drain pan, by allowing the pump to drain any condensate water due to
regulating valve losses when chiller is working.
3.3 OPERATING LIMITS
Power supply
Volts
Phase
Hz
230
1
50
Temperature range between +5°C and +32 °C- 60 % U.R.
Minimum entering water temperature: +4 °C
Maximum entering water temperature: +80 °C
Water side maximum pressure: 600 KPa- ( 6 Bar )

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3.4 BEFORE INSTALLATION
The installation site must be established by the system designer or other qualified professional, taking
account of the technical requisites and current standards and legislation.
Fan coils radiator must be installed by an authorized company only.
Fan coils radiator are designed for floor standing installation .
They must be installed in such a way as to enable treated air to circulate throughout the room and in
respect of the minimum distances required for technical maintenance operations.
It is advisable to place the unit close to the installation site without removing it from the packaging.
Do not put heavy tools or weights on the packaging.
Upon receipt, the unit and the packaging must be checked for damage sustained in transit and if
necessary, a damage claim must be filed with the shipping company.
Check immediately for installation accessories inside the packaging.
Check and note the unit serial number.
3.5 SELECT LOCATION
Do not install the unit in rooms where flammable gas or alkaline acid substances are present.
Aluminum/copper coils and/or internal plastic components can be damaged irreparably.
Do not install in ambient where oil vapors drawn in by treated air might deposit on the coils and alter
their performance or damage the internal plastic parts of the unit.
It is recommended to position the unit as centrally as possible in the room to ensure optimum air
distribution.
Check that it is possible to remove filter , to allow enough clearance for maintenance and servicing
operations.
The appliance shall not be installed in the laundry.
The appliance shall be installed in accordance with national wiring regulations.

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4. INSTALLATION
4.1 POSITIONING THE UNIT ( minimum distance from obstacle )
The dimensions of the space necessary for correct installation of the appliance including the minimum
permissible distances to adjacent structures.
Note : Machine is supplied with paper wall map to avoid any mistake from installer .

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4.2 PLUMBING CONNECTION SIDE
The position of plumbing fitting must be from right side , from the wall or from the floor.
The choice and size of the plumbing lines is decided by the designer , who must operate in compliance
with good man ship and current legislation .
CONNECTION PIPES DIAMETERS
Model
Water Flow Max
( L/h )
Ø Steel ( “ )
Ø Copper (mm)
Ø Multilayer pipe
(mm)
Doppio 2 (EX)
376
1/2
18/22
20
Doppio 4 (EX)
616
3/4
18/22
26
Max speed suggested V = m/sec :
Pipe Type
Principal pipe
m/sec
Secondary pipe
Connection pipe to the indoor terminal (
fan coils + radiator )
Steel pipe
1.5 –2.5
0.5 –1.5
0.2 –0.7
Copper Pipe
0.9 –1.2
0.5 –1.2
0.2 –0.5
Multilayer plastic
pipe
1.5 –2.5
0.5 –1.5
0.2 –0.7
EXAMPLE OF PLUMBING CONNECTION FOR 2 AND 4 PIPES INSTALLATION
Machine is supplied with paper wall map to identify fast the right plumbing connection position if
pipes coming from wall or from the floor .
Is possible to use also strongest pipe wall map metal made , useful to reuse many time.
Below is reported the images and quote for fast understanding .

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Plumbing from wall
Plumbing from floor

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4.3 WALL MAP
Wall map Doppio 2 (EX)

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Wall map Doppio 4 (EX)

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4.4 ELECTRICAL CONNECTION SIDE
Important
The position of electric connection must be from left side , from the wall or from the floor.
The power supply must pass through a specific master switch fitted with delayed fuses or a 2A thermo
magnetic circuit breaker. By law, an anti-disturbance filter is mounted on the cabling bracket to
discharge to heart a micro-current therefore it is advisable to use a delayed differential in installations
with more than one unit .
For safety motives, the main disconnecting switch should be located in a visible place , close to device
powered .
The power cables must be fitted with copper conductors with the following individual section ( the
values indicated refer to a maximum line length 15 m ) .
The cables must be type H07-RR-F and have a minimum diameter of 8 mm .
Model
Conductor section sq mm –
Ground power ( phase and neutral
)
Ground
Doppio 2 (EX)
1.5
1.5
Doppio 4 (EX)
1.5
1.5
Signal wiring
To avoid interference is advised to put power cable and signal cable in different plastic tube inside the
wall
Model
Signal cable sq mm
Note
Doppio 2 (EX), Doppio 4 (EX)
0.50-0.70
H07VK Type
EXAMPLE OF ELECTRIC CONNECTION

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Machine is supplied with paper wall map to identify fast the right electric connection position if
coming from wall or from the floor .
Is possible supply also strongest pipe wall map metal made , useful to reuse many time .
Below is reported the images and quote for fast understanding .
Don’t use power cable within signal cable ( coming from wall pad or external sensor ) inside the same
corrugated pipe , because is possible to have signal interference .
Electric wiring from wall
Electric wiring from floor
If the supply cord is damaged, it must be replaced by the manufacture its service agent or a similarly
qualified person in order to avoid a hazard.

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4.5 INSTALLATION METHOD ( 2 Pipes Example )
Before to proceed to fix the machine , using paper wall map , control the correct pipe correspondence
and wall bracket position .
Proceed to drill plastic anchor hole for metal wall bracket and pay attention to fix it after checked
correct positioning with level meter.
Remove paper wall map, and proceed to fix flexible water pipe using kit supplied from factory. The
kit( optional) includes soft pipes and H shape valve. Pipe kits have correct diameter and length for
easy installation.
H shape ball valve
(optional)

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Remove filter
Take out n.4+4 screws from left and right metal flanks by Allen key.
Optional

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Take out n.2 screws by the top panel by Allen key. Remove the metal flanks
In the same way, remove 2+2 screws by Allen key. Remove the panel on the top
Note: Disconnect the cable from display

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Remove radiator
Take out 2pcs screws by the driver and remove
the pipe cover carefully from bottom of the unit ,
and disconnect the 2pcs radiator nuts with
wrench, then lift the radiator carefully.
Remove metal cover like below image