CLIVET WSN-XIN Series User manual

M0V940M13-06 13-09-16
Installation and
operating manual
Air heat pump - ductable water for indoor installation
WSN-XIN 21-141

Dear Customer,
We congratulate you on choosing this product
For many years Clivet has been oering systems that provide maximum comfort, together with high
reliability, eciency, quality and safety.
The aim of the company is to oer advanced systems, that assure the best comfort, reduce energy
consumption and the installation and maintenance cost for the life cycle of the system.
The purpose of this manual is to provide you with information that is useful from reception of
the equipment, through installation, operational usage and nally disposal so that this advanced
system oers the beat solution.
Yours faithfully.
CLIVET Spa
The data contained in this manual is not binding and may be changed by the manufacturer without
prior notice.
Reproduction, even is part, is FORBIDDEN © Copyright - CLIVET S.p.A. - Feltre (BL) - Italia

M0V940M13-06 WSN-XIN 21-141 3
Index of contents
4
1 Installation quick guide 5
2 General description 6
3 Reception 8
4 Positioning 10
5 Water connections 14
6 Electrical connections 16
7 Start-up 23
8 Control 31
9 Maintenance 45
10 Accessories 49
11 Decommissioning 62
12 Residual risks 63
13 Dimensional drawings 64
14 Technical information 68

4 WSN-XIN 21-141 M0V940M13-06

M0V940M13-06 WSN-XIN 21-141 5
1 Installation quick guide
chapter / page
A Domestic hot water module 10.5 Boiler managementp.56
B Temperature probe domestic hot water 10.5 Boiler managementp.56
C Boiler 10.5 Boiler managementp.56
D 3-way DHW valve 10.5 Boiler managementp.56
E 3-way valve 10.5 Boiler managementp.56
F 1° setpoint control 10.5 Boiler managementp.56
G 2° setpoint control (2 setpoint>1 setpoint) 10.5 Boiler managementp.56
HBUS connection
H+H1 = 100mt max 10.5 Boiler managementp.56
I ON/OFF 6.7 SA1 = On-O / Standby remotep.21
L summer/winter 6.8 SA2 = Summer - Winter remotep.22
M Second set point [Ref]p.
N Remote control [Ref]p.
O Boiler control 6.6 Connections performer by customerp.20
P Remote alarm signal 6.6 Connections performer by customerp.20
Q Bypass 10.5 Boiler managementp.56
R Power supply
ST-safety probe Provided by the customer
Weight and dimensions 13 Dimensional drawingsp.64

6 WSN-XIN 21-141 M0V940M13-06
2 General description
2.1 Manual
The manual provides correct unit installation, use and maintenance.
Pay particular attention to:
Warning, identies particularly important operations or information.
Prohibited operations that must not be carried out, that compromise the operating of the unit or may cause damage to persons or things.
• It is advisable to read it carefully so you will save time during operations.
• Follow the written indications so you will not cause damages to things and injuries people.
2.2 Preliminaries
Only qualied personnel can operate on the unit, as required by the regulation in force.
2.3 Risk situations
The unit has been designed and created to prevent injures to people.
During designing it is not possible to plane and operate on all risk situation.
Read carefully “Residual risk” section where all situation which may cause damages to things and injuries to people are reported.
Installation, starting, maintenance and repair required specic knowledge; if they are carried out by inexperienced personnel, they may cause
damages to things and injuries people.
2.4 Intended use
Use the unit only:
• for cooling/heating water or a water and glycol mix for air-conditioning only
• keep to the limits foreseen in the technical schedule and in this manual
The manufacturer accepts no responsibility if the equipment is used for any purpose other than the intended use.
2.5 Installation
The positioning, hydraulic system, refrigerating, electrics and the ducting of the air must be determined by the system designer in accordance
with local regulations in force.
Follow local safety regulations.
Verify that the electrical line characteristics are in compliance with data quotes on the unit serial number label.
2.6 Maintenance
Plan periodic inspection and maintenance in order to avoid or reduce repairing costs.
Turn the unit o before any operation.
2.7 Modication
All unit modications will end the warranty coverage and the manufacturer responsibility.
2.8 Breakdown/Malfuction
Disable the unit immediately in case of breakdown or malfunction.
Contact a certied service agent.
Use original spares parts only.
Using the unit in case of breakdown or malfunction:
• voids the warranty
• it may compromise the safety of the unit
• may increase time and repair costs

M0V940M13-06 WSN-XIN 21-141 7
2.9 User training
The installer has to train the user on:
• Start-up/shutdown
• Set points change
• Standby mode
• Maintenance
• What to do / what not to do in case of breakdown
2.10 Data update
Continual product improvements may imply manual data changes.
Visit manufacturer web site for updated data.
2.11 Indications for the User
Keep this manual with the wiring diagram in an accessible place for the operator.
Note the unit data label so you can provide them to the assistance centre in case of intervention (see“Unit identication”section).
Provide a unit notebook that allows any interventions carried out on the unit to be noted and tracked making it easier to suitably note the
various interventions and aids the search for any breakdowns.
In case of breakdown or malfunction:
• Immediately deactivate the unit
• Contact a service centre authorized by the manufacturer
The installer must train the user, particularly on:
• Start-up/shutdown
• Set points change
• Standby mode
• Maintenance
• What to do / what not to do in case of breakdown
2.12 Unit indentication
The serial number label is positioned on the unit and allows to indentify all the unit features.
The matriculation plate must never be removed.
The matriculation plate shows the indications foreseen by the standards, in particular:
• unit type
• serial number (12 characters)
• year of manufacture
• wiring diagram number
• electrical data
• manufacturer logo and address
2.13 Serial number
It identies uniquely each unit.
Must be quoted when ordering spare parts.
2.14 Assistance request
Note data from the serial number label and write them in the chart on side, so you will nd them easily when needed.
Series
Size
Serial number
Year of manufacture
Electrical wiringdiagram

8 WSN-XIN 21-141 M0V940M13-06
3 Reception
You have to check before accepting the delivery:
• That the unit hasn’t been damaged during transport
• That the materials delivered correspond with that indicated on the transport document comparing the data with the identication label
positioned on the packaging.
In case of damage or anomaly:
• Write down on the transport document the damage you found and quote this sentence: “Conditional acceptance clear evidence of
deciencies/damages during transport”
• Contact by fax and registered mail with advice of receipt to supplier and the carrier.
Any disputes must be made within 8 days from the date of the delivery. Complaints after this period are invalid.
3.1 Storage
Observe external packaging instructions.
3.2 Handling
1. Verify unit weight and handling equipment lifting capacity.
2. Identify critical points during handling (disconnected routes, ights, steps, doors).
3. Suitably protect the unit to prevent damage.
4. Before starting the handling, make sure that the unit is stable.
5. Start hoisting the unit.
6. Remove screws
A- Protections

M0V940M13-06 WSN-XIN 21-141 9
B- Screws
3.3 Packaging removing
Be careful not to damage the unit.
Keep packing material out of children’s reach it may be dangerous.
Recycle and dispose of the packaging material in conformity with local regulations.

10 WSN-XIN 21-141 M0V940M13-06
4 Positioning
During positioning consider these elements:
• Technical spaces requested by the unit
• Electrical connections
• Water connections
• Spaces for air exhaust and intake
4.1 Functional spaces
Functional spaces are designed to:
• guarantee good unit operation
• carry out maintenance operations
• protect authorized operators and exposed people
Respect all functional spaces indicated in the DIMENSIONS section.
Double all functional spaces if two or more unit are aligned.
4.2 Positioning
Units are designed to be installed:
• INTERNAL
• in xed positions
Limit vibration transmission:
• use antivibration devices on unit bearing points
• install exible joints on the hydraulic connections
Choose the installation place according to the following criteria:
• Customer approval
• safe accessible position
• technical spaces requested by the unit
• spaces for the air intake/exhaust
• Avoid installations in places subject to ooding
• verify unit weight and bearing point capacity
• verify that all bearing points are aligned and leveled
• install the unit raised from the ground
• max. distance allowed by the electrical connections
Prefer places where the unit doesn’t disturb the neighbours.
Avoid installations next to bedrooms or windows.
Avoid snow accumulations on batteries.
A correct circulation of the air is mandatory to guarantee the good unit operating.
Avoid therefore:
• obstacles to the airow
• diculty of exchange
• leaves or other foreign bodies that can obstruct the air coil
• winds that hinder or favour the airow
• heat or pollution sources close to the unit (chimneys, extractors etc..)
• stratication (cold air that stagnates at the bottom)
• recirculation (expelled air that is sucked in again)
• incorrect positioning, close to very high walls, attics or in angles that could give rise to stratication or recirculation phenomenons
Ignoring the previous indications could:
• reduce energy eciency
• alarm lockout due to HIGH PRESSURE (in summer) or LOW PRESSURE (in winter)

M0V940M13-06 WSN-XIN 21-141 11
A. Obstacles or barriers which avoid the air inow to the unit coil
B. Keep the min. distances from the podestrian areas.
C. Avoid the by-pass between the two air ows
D. Avoid snow accumulations on batteries.
E. Avoid the rain input
F. Avoid the angle curves and narrowings
G. Safety and anti-intrusion for small animals grille
(provided by the Customer)

12 WSN-XIN 21-141 M0V940M13-06
4.3 Direction of air supply
The unit is delivered with the air supply upward.
The air supply may be directed depending on the installation location.
To adjust the direction:
• Unscrew the xing bolts on the fan cap.(4 for size 21-71, 10 for size 81-141).
• Remove the cap and rotate.
• Fix the cap using the bolts previously removed.
4.4 Condensate water
When a heat pump is running it produces a considerable amount of water due to the defrosting cycles of the external coil.
The condensation must be eliminated in a manner to avoid wetting pedestrian areas.
With extensive very cold outdoor temperatures, condensation could freeze outside the unit blocking the ow and causing a slow build-up of
ice; therefore special attention must be paid to eliminating condensation, raising the unit o the ground and evaluating whether antifreeze
elements should be installed.
A. Condensate discharge connection

M0V940M13-06 WSN-XIN 21-141 13
4.5 GMX - Supply grille
Accessory
Fix the grille with the screws

14 WSN-XIN 21-141 M0V940M13-06
5 Water connections
5.1 Water quality
The water quality must be checked by qualied personnel.
Water with inadequate characteristics can cause:
• pressure drop increase
• reduces energy eciency
• increased corrosion potential
Acceptable water quality values:
SO
42-
HCO
3-
/SO
42-
Total Hardness
Cl
-
PO
43-
< 100
> 1
4,5 ÷8,5
< 50
< 2,0
NH3 < 0,5
PH 7,5 ÷9,0
ppm
dH
ppm
ppm
ppm
Fe
3+
Mn
++
CO
2
H
2
S
Temperature
< 0,5
< 0,05
< 50
< 50
< 65
Oxygen content < 0,1
Free Chlorine < 0,5
ppm
ppm
ppb
°C
ppm
ppm
ppm
Provide a water treatment system if values fall outside the limits.
5.2 Risk of freezing
If the unit or the relative water connections are subject to temperatures close to 0°C:
• mix water with glycol, or
• safeguard the pipes with heating cables placed under the insulation, or
• empty the system in cases of long non-use
5.3 Anti-freeze solution
The use of an anti-freeze solution results in an increase in pressure drop.
Make sure that the glycol type utilized is inhibited (not corrosive) and compatible with the water circuit components.
Do not use dierent glicol mixture (i.e. ethylene with propylene).
5.4 Water ow-rate
The project water-ow must be:
• inside the exchanger operating limits (see the TECHNICAL INFORMATION section)
• guarantee, also with variable system conditions (for example in systems where some circuits are bypassed in particular situations).
5.5 Flow Switch
The ow switch must be present to ensure shutdown of the unit if water is not circulating.
It has to be installed in a duct rectilinear part, not in proximity of curves that cause turbulences.
A
!
A
A > 5 Ø
Ø
A. minimum distance

M0V940M13-06 WSN-XIN 21-141 15
5.6 Operation sequence
Close all vent valves in the high points of the unit hydraulic circuit
Close all drain valves in the low points of the unit hydraulic circuit:
• Heat exchangers
• Pumps
• collectors
• storage tank
1. Carefully wash the system with clean water: ll and drain the system several times.
2. Apply additives to prevent corrosion, fouling, formation of mud and algae.
3. Fill the plant
4. Vent the system
5. Execute leakage test.
6. Isolate the pipes to avoid heat dispersions and formation of condensate.
7. Leave various point of service free (wells, vent-holes etc).
Neglecting the washing will lead to several lter cleaning interventions and at worst cases can cause damages to the exchangers and the
other parts.
5.7 Recommended connection
The installer must dene:
• component type
• position in system
279
13
3
1
14
UNIT
610 12
458
15
F
11
1 antivibration joints 9 safety valve
2 piping support 10 Flow Switch
3 exchanger chemical cleaning bypass 11 pressure gauge
4 drain valve 12 thermometer
5 vent 13 lter
6 shut-o valve 14 Internal storage tank
7 Pump / circulating pump 15 Cleaning system bypass
8 expansion vessel
5.8 Water lter
It must be installed immediately in the water input of the unit, in a position that is easily accessible for cleaning.
The lter never should be removed, this operation invalidates the guaranty.
5.9 Domestic hot water module
10 Accessoriesp.49
5.10 Domestic hot water with solar energy
10 Accessoriesp.49
5.11 Boiler management
10 Accessoriesp.49

16 WSN-XIN 21-141 M0V940M13-06
6 Electrical connections
The characteristics of the electrical lines must be determined by qualied electrica personnel able to design electrical installations; moreover,
the lines must be in conformity with regulations in force.
The protection devices of the unit power line must be able to stop all short circuit current, the value must be determined in accordance with
system features.
The power cables and the protection cable section must be dened in accordance with the characteristics of the protections adopted.
All electrical operations should be performed by trained personnel having the necessary qualications required by the regulations in force
and being informed about the risks relevant to these activities.
Operate in compliance with safety regulations in force.
6.1 Electrical data
The serial number label reports the unit specic electrical data, included any electrical accessories.
The electrical data indicated in the technical bulletin and in the manual refer to the standard unit, accessories excluded.
The matriculation plate shows the indications foreseen by the standards, in particular:
• Voltage
• F.L.A.: full load ampere, absorbed current at maximum admitted conditions
• F.L.I.: full load input, full load power input at max. admissible condition
• Electrical wiringdiagram Nr.
If the DHW module is present, consider the electric resistance absorption in the power supply line dimensionino.
6.2 Connections
1. Refer to the unit electrical diagram (the number of the diagram is shown on the serial number label).
2. Verify that the electrical supply has characteristics conforming to the data shown on the serial number label.
3. Before starting work, ensure the unit is isolated, unable to be turned on and a safety sign used.
4. Ensure correct earth connection.
5. Ensure cables are suitably protected.
6. Before powering up the unit, make sure that all the protections that were removed during the electrical connection work have been
restored.
6.3 Signals / data lines
Do not exceed the maximum power allowed, which varies, according to the type of signal.
Lay the cables far from power cables or cables having a dierent tension and that are able to emit electromagnetic disturbances.
Do not lay the cable near devices which can generate electromagnetic interferences.
Do not lay the cables parallel to other cables, cable crossings are possible, only if laid at 90°.
Connect the screen to the ground, only if there aren’t disturbances.
Guarantee the continuity of the screen during the entire extension of the cable.
Respect impendency, capacity and attenuation indications.

M0V940M13-06 WSN-XIN 21-141 17
6.4 Power input
A Ø mm 22
B Ø mm 22
C Ø mm 34
Install the isolator switch near the unit.
Fix the cables: if vacated may be subject to tearing.
The cable must not touch the compressor and the refrigerant piping (they reach high temparatures).

18 WSN-XIN 21-141 M0V940M13-06
6.5 Electrical panel
ASignals BRS485 CPower supply
AP1 Main control module FU1 Fuse
AP2 Electronic thermostatic management FU2 230V aux. cicuit fuse
AP4 Fan control module KA1 Inverter alarm auxiliary relay
AP6 RS 485 module
(OPTIONAL)
KA2 Compressor control relay
C1
C2
Fan capacitor KA3 Ciculation pump control relay
T1 Transformer XT1 Terminal block of the customer connections

M0V940M13-06 WSN-XIN 21-141 19
ASignals BRS485 CPower supply
AP1 Main control module FU-V Fan fuse
AP2 Electronic thermostatic management FU1 230V aux. cicuit fuse
AP6 RS 485 module
(OPTIONAL)
FU2 compressor overload protection and timer
T1 Transformer QS1 Main isolator switch
FU1 compressor overload protection and timer
Size 51-71
QM1 Compressor line protection
FU2
230V aux. cicuit fuse
Size 51-71
KA1 Inverter alarm auxiliary relay
KA2 Compressor control relay
KA3 Ciculation pump control relay
XT1 Terminal block of the customer connections

20 WSN-XIN 21-141 M0V940M13-06
6.6 Connections performer by customer
Electrical panel
sizes 21÷71 - 230/1/50
1 Unit SA1 Remote ON-OFF
6.7 SA1 = On-O / Standby remotep.21
2 Connections perfomer by customer SA2 Remote summer/winter
6.8 SA2 = Summer - Winter remotep.22
3 Only for sizes 21-41 SA3 Second setpoint enabling
[Ref]p.
4 Only for sizes 51-71 M8 Pump use
Provided by the customer
A Fuses
Provided by the customer
XT1 Terminal block of the customer connections
B Isolating switch
Provided by the customer
Boiler Boiler control, max 24v/AC
FU1 Fuse ALM Cumulative fault signal,max 24v/AC
QG Electrical panel YVc 3-way Boiler valve
AP7 Room keypad