Unique WS Series User manual

Service Manual
And
Advanced air conditioning systems

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Contents
SAFETY FIRST! …………………………………………………………………
4
1.
INTRODUCTION ………………………………………………………………..
5
2.
TECHNICAL DATA TABLES ……………...…………………………………. 8
3.
WATER SOURCE CONSOLE UNITS ………………………………………...
11
4.
SPLIT CONDENSER UNITS ..………………………………………………….
12
5.
HEATING ELEMENT RECOMMENDATIONS ……………………………..
13
6.
REFRIGERATION CYCLE DIAGRAMS …………………………………….
14
7.
INSTALLATION INSTRUCTIONS …………………………………………...
16
8.
INSTALLING THE CONTROL SYSTEM AND CONNECTING POWER...
22
9.
ELECTRICAL WIRING DIAGRAMS ………………………………………...
25
10.
TROUBLESHOOTING GUIDE ………………………………………………..
31
11.
CONTROL PROGRAMS and OPERATION INSTRUCTIONS …………….
37

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SAFETY FIRST!
Safe operation is UNIQUE's nu ber-one priority when designing products. Please
read all the safety infor ation and the instructions co pletely prior to beginning the
installation and operation of the unit.
UNIQUE products are designed for HVAC use. Using this equip ent for any other
purpose or in a way not within the operation reco endations specified in this anual
will void the warranty and ay cause injury. This anual is designed to provide
co prehensive installation/operation infor ation for this UNIQUE product. The table
of contents provides a convenient overview of the infor ation in this anual.
Fo ow Safety Instructions! Carefully read all safety essages in this anual and on
the equip ent. Follow reco ended practices and safe operating practices. Keep
Safety Signs in good condition. Replace issing or da aged Safety Signs.
Danger! In plannig the location of the equip ent, take into consideration any areas
that could present an unsafe situation. Avoid power lines that could co e into contact
with the equip ent.
Warning! – E ectrica Safety. To avoid electrical shock, place equip ent in a safe
area, use guards around control panels and always shut off and lock out control boxes
when working on equip ent.
In selecting electrical equip ent to be used with the installation, you ust use
equip ent confor ing to applicable local or international codes or regulations.
Important! Check all equip ent for warning, danger and Caution Decals, before
equip ent is operated.
Do not by-pass or take shortcuts with electrical safety equip ent. Make sure electrical
equip ent is properly installed and grounded by a qualified electrician, and that it
eets and adheres to all local laws and codes.
Be sure covers, guards and safety devices are correctly installed and in proper position.
Danger! Failure to follow proper asse bly and operational procedures ay cause
da age to equip ent or personal injury.

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1. INTRODUCTION
This Service Manual provides comprehensive technical documentation for all models of
UNIQUE-WS split and packaged ater source air conditioners.
The information contained in the manual is useful for application engineers, architects, system
designers, contractors and various level service and installation personnel.
The manual also contains information about the optional features offered by the
UNIQUE-WS series, as ell as helpful information on electrical iring diagrams and
refrigeration cycle diagrams for the various models.
Product specifications are subject to change without notice. Appearance of products
ay differ slightly fro anual i ages.
1.1 Product Overview
Unique-WS air conditioners are operating ith ater cooled condensing unit and can be
utilized in applications such as residential, industrial and commercial buildings, offices,
schools and other facilities. The operation of Unique-WS air conditioners is quiet and durable
ith lo maintenance requirements and provides efficient year-round cooling and heating.
The units are suitable for cooling to er installations, ground ater sources or open ater
circuits.
Unique-WS air conditioners feature heat pump facilities for heating, utilizing a 4- ay
reversing valve hich s itches the unit into heating mode. In heating mode adequate
temperature of the cooling ater must be insured.
Alternatively, electric heating elements can be used for heating. In such configuration the
units are equipped ith additional protection elements.
Scope of supply includes package units and split condenser units.
Unique-WS appliances are adequate for ambient temperature range of minimum 19ºC and
maximum 35ºC and ater input temperature range of minimum 16ºC and maximum 35ºC.
All Unique-WS air conditioners are ISO
- 9001:2000 and CE certified .

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1.2 Manufacturing Options
WS air conditioners are available in horizontal or vertical execution. Standard layout includes
SL, SR, FL and FR setup. Additional configurations are available upon request.
FL FR
SL SR

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1.3 Na eplate Infor ation
Technical information for a specific unit appears on the unit nameplate, hich is attached to
the indoor and/or the outdoor units.
The unit na eplate includes the following infor ation:
MODEL Air-conditioner model name
CLIMATE CLASS Class T1 – Standard conditions.
VOLT/PHASE/Hz A/C po er supply, for example: 400/3/50 = 400V/3 Phase/50 Hz.
COS φ Po er factor for the unit.
FUSE Required fuse size, Amp.
CAPACITORS μF Compressor capacitor, Fan capacitor ( herever applicable)
AIR FLOW m³/h Air Flo at High Speed in m³/h
AIR FLOW cfm Air Flo at High Speed in cfm
WATER FLOW m³/h Water Flo in m³/h
WATER FLOW gpm Water Flo in gpm
REFRIGERANT Type and Quantity of refrigerant charge, Gr.
CAPACITY W Cooling capacity in Watts.
CAPACITY BTU/H Cooling capacity in BTU/Hr.
INPUT POWER Po er consumption in cooling and heating modes, atts.
AMP. Current consumption in cooling and heating modes, Amp.

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2.1 Technical Data Table – WS Package Units
Model WS-12 WS-15 WS-22 WS-28
Cooling capacity
(1)
Watt 3281 4159 6239 8202
Btu/h 11200 14200 21300 28000
H ating capacity
(1)
Watt 4247 5331 7469 9813
Btu/h 14500 18200 25500 33500
Pow r
Consumption
(2)
Cooling Watt 859 1066 1588 2103
H ating Watt 1036 1300 1822 2336
Op rating
Curr nt
(2)
Cooling Amp. 6.0 6.6 9.5 13.3
H ating Amp. 6.0 8.7 12.0 16.9
C.O.P Cooling 3.82 3.90 3.93 3.90
H ating 4.10 4.10 4.10 4.20
Air Flow M
3
/h 680 850 1190 1530
CFM 400 500 700 900
N t Static Pr ssur
(
3
)
mm H
2
O 5 2.5 2.5 2.5
Wat r Flow M
3
/h 0.6 0.8 1.1 1.5
GPM 2.6 3.3 4.9 6.5
H at R j ction-Cooling Watt 4140 5225 7827 10305
Btu/h 14133 17839 26721 35180
H at Extraction-H ating Watt 3211 4031 5647 7477
Btu/h 10963 13762 19280 25525
Pow r Supply V/Ph/Hz 230/1/50
(
4
)
230/1/50
(
4
)
230/1/50
(
4
)
230/1/50
(
4
)
Tim D lay Fus Amp. C10 C10 C16 C20
Wat r Piping in/out BSP 3/4" 3/4" 3/4" 1"
Drain mm 19 19 19 19
R frig rant Charg gr. 1100 1100 1200 1300
Dim nsions (LxWxH) mm 880x600x400 880x600x400 960x600x460
1040x600x460
N t W ight Kg. 67 70 80 94
1. D sign data for cooling: Air nt ring t mp ratur 27ºC db/19ºC wb and wat r inl t t mp ratur 29ºC
D sign data for h ating: Air nt ring t mp ratur 21ºC and wat r inl t t mp ratur 20ºC
2. Excluding l ctrical h ating l m nt.
3. N t static pr ssur availabl at fan discharg at nominal capacity.
4. Availabl also in 400/3/50.
Data applicable for R410A. or additional information contact Unique ltd.
Product specifications are subject to change without notice. Appearance of products may differ slightly from catalog.

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2.1 Technical Data Table – WS Package Units (continued)
Model WS-36 WS-43 WS-48 WS-54 WS-61
Cooling capacity
(1)
Watt 10516 12449 13679 15700 17428
Btu/h 35900 42500 46700 53600 59500
H ating capacity
(1)
Watt 12390 14382 15847 18893 20240
Btu/h 42300 49100 54100 64500 69100
Pow r
Consumption
(2)
Cooling Watt 2689 3259 3553 4015 4550
H ating Watt 3098 3508 3865 4608 5060
Op rating
Curr nt
(2)
Cooling Amp 17.7 18.1 3x8.1 3x10.0 3x10.5
H ating Amp 13.9 22.3 3x9.7 3x11.7 3x12.4
C.O.P
Cooling 3.91 3.82 3.85 3.91 3.83
H ating 4.00 4.10 4.10 4.10 4.00
Air Flow M
3
/h 2040 2550 2720 3060 3400
CFM 1200 1500 1600 1800 2000
N t Static Pr ssur
(
3
)
mm H
2
O 3.8 5 5 5 5
Wat r Flow M
3
/h 1.9 2.3 2.5 2.8 3.2
GPM 8.3 9.9 10.9 12.5 13.9
H at R j ction-Cooling Watt 13205 15708 17232 19715 21978
Btu/h 45080 53626 58830 67307 75034
H at Extraction-H ating Watt 9292 10874 11982 14285 15180
Btu/h 31723 37124 40907 48768 51825
Pow r Supply V/Ph/Hz 230/1/50
(
4
)
230/1/50
(
4
)
400/3/50 400/3/50
400/3/50
Tim D lay Fus Amp. C20 C25 3xC16 3xC16 3xC16
Wat r Piping in/out BSP 1" 1" 1" 1" 1"
Drain mm 19 19 19 22.2 22.2
R frig rant Charg gr. 1500 1600 2300 2600 2700
Dim nsions (LxWxH) mm 1090x600x520 1290x600x520 1290x600x560 1370x700x560 1370x700x560
N t W ight Kg. 108 115 125 137 145
1. D sign data for cooling: Air nt ring t mp ratur 27ºC db/19ºC wb and wat r inl t t mp ratur 29ºC
D sign data for h ating: Air nt ring t mp ratur 21ºC and wat r inl t t mp ratur 20ºC
2. Excluding l ctrical h ating l m nt.
3. N t static pr ssur availabl at fan discharg at nominal capacity.
4. Availabl also in 400/3/50.
Data applicable for R410A. or additional information contact Unique ltd.
Product specifications are subject to change without notice. Appearance of products may differ slightly from catalog.

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2.1 Technical Data Table – WS Package Units (continued)
WS-75 to WS-102 WS-120 and WS-144
Model WS-75 WS-85 WS-102 WS-120 WS-144
Cooling capacity
(1)
Watt 21734 24751 29643 34739 41945
Btu/h 74200 84500 101200 118600 143200
H ating capacity
(1)
Watt 25395 28910 34974 40715 49502
Btu/h 86700 98700 119400 139000 169000
Pow r
Consumption
(2)
Cooling Watt 5573 6314 7601 8862 10646
H ating Watt 6194 6883 8743 9930 11786
Op rating
Curr nt
(2)
Cooling Amp 3x14.9 3x16.2 3x18.2 3x22.4 3x31.1
H ating Amp 3x16.9 3x18.3 3x21.2 3x26.0 3x35
C.O.P
Cooling 3.90 3.92 3.90 3.92 3.94
H ating 4.10 4.20 4.00 4.10 4.20
Air Flow M
3
/h 4080 4760 5100 6800 8160
CFM 2400 2800 3000 4000 4800
N t Static Pr ssur
(
3
)
mm H
2
O 6.4 6.4 6.4 7.6 8.9
Wat r Flow M
3
/h 3.9 4.5 5.4 6.3 7.6
GPM 17.3 19.6 23.5 27.6 33.2
H at R j ction-Cooling Watt 27307 31065 37244 43601 52591
Btu/h 93226 106056 127150 148855 179545
H at Extraction-H ating Watt 19201 22027 26231 30785 37716
Btu/h 65554 75201 89551 105099 128763
Pow r Supply V/Ph/Hz 400/3/50 400/3/50
400/3/50
400/3/50
400/3/50
Tim D lay Fus Amp. 3xC20 3xC25 3xC25 3xC40 3xC40
Wat r Piping in/out BSP 1¼" 1¼" 1¼" 1½" 1½"
Drain mm 22.2 22.2 22.2 30 30
R frig rant Charg gr. 3200 3700 3900 4200 6000
Dim nsions (LxWxH) mm 1510x700x600 1540x750x610 1650x850x610 2050x1000x630 2050x1100x660
N t W ight Kg. 165 185 195 255 325
1. D sign data for cooling: Air nt ring t mp ratur 27ºC db/19ºC wb and wat r inl t t mp ratur 29ºC
D sign data for h ating: Air nt ring t mp ratur 21ºC and wat r inl t t mp ratur 20ºC
2. Excluding l ctrical h ating l m nt.
3. N t static pr ssur availabl at fan discharg at nominal capacity.
4. Availabl also in 400/3/50.
Data applicable for R410A. or additional information contact Unique ltd.
Product specifications are subject to change without notice. Appearance of products may differ slightly from catalog.

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3. Technical data table – WSC – Water Source Console
Model WSC-12 WSC-15 WSC-22 WSC-28
Cooling capacity
(1)
Watt 3281 4159 6239 8202
Btu/h 11200 14200 21300 28000
H ating capacity
(1)
Watt 4247 5331 7469 9813
Btu/h 14500 18200 25500 33500
Pow r
Consumption
(2)
Cooling Watt 859 1066 1588 2103
H ating Watt 1036 1300 1822 2336
Op rating
Curr nt
(2)
Cooling Amp. 6.0 6.6 9.5 13.3
H ating Amp. 6.0 8.7 12.0 16.9
C.O.P
Cooling 3.82 3.90 3.93 3.90
H ating 4.10 4.10 4.10 4.20
Air Flow M
3
/h 680 850 1190 1530
CFM 400 500 700 900
N t Static Pr ssur
(
3
)
mm H
2
O 5 2.5 2.5 2.5
Wat r Flow M
3
/h 0.6 0.8 1.1 1.5
GPM 2.6 3.3 4.9 6.5
H at R j ction-Cooling Watt 4140 5226 7827 10305
Btu/h 14133 17839 26721 35180
H at Extraction-H ating Watt 3211 4031 5647 7477
Btu/h 10963 13762 19280 25525
Pow r Supply V/Ph/Hz 230/1/50
(
4
)
230/1/50
(
4
)
230/1/50
(
4
)
230/1/50
(
4
)
Tim D lay Fus Amp. C10 C10 C16 C20
Wat r Piping in/out BSP 3/4" 3/4" 3/4" 1"
Drain mm 19 19 19 19
R frig rant Charg gr. 1100 1100 1200 1300
Dim nsions (LxWxH) mm 1100x350x700 1100x350x700 1350x350x700 1350x350x700
N t W ight Kg. 62 65 75 75
1. D sign data for cooling: Air nt ring t mp ratur 27ºC db/19ºC wb and wat r inl t t mp ratur 29ºC
D sign data for h ating: Air nt ring t mp ratur 21ºC and wat r inl t t mp ratur 20ºC
2. Excluding l ctrical h ating l m nt.
3. N t static pr ssur availabl at fan discharg at nominal capacity.
4. Availabl also in 400/3/50.
Data applicable for R410A. or additional information contact Unique ltd.
Product specifications are subject to change without notice. Appearance of products may differ slightly from catalog.

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4. Di ensions and Weights – Split Condenser Units
Mod l
LxWxH R frig rant Tubing
Conn ctions Wat r Inl t W ight
mm
Liquid (Small)
inch
Suction (Larg )
inch
BSP Kg
WS-12 600x350x400 3/8" 1/2" 3/4" 35
WS-15 600x350x400 3/8" 1/2" 3/4" 38
WS-22 600x350x400 3/8" 5/8" 3/4" 45
WS-28 600x350x420 3/8" 5/8" 1" 61
WS-36 600x400x460 3/8" 5/8" 1"
68
WS-43 650x450x520 1/2" 3/4" 1"
68
WS-48 650x450x520 1/2" 3/4" 1"
70
WS-54 650x450x520 1/2" 3/4" 1"
71
WS-61 750x480x560 1/2" 7/8" 1" 73
WS-75 750x480x560 1/2"
7/8"
1 ¼" 75
WS-85 750x550x610 1/2"
7/8"
1 ¼"
95
WS-102 750x550x610 1/2"
7/8"
1 ¼"
100
WS-120 850x550x630 5/8"
1⅛"
1½"
135
WS-144 1000x550x630 5/8"
1⅛"
1½"
150
Data applicable for R410A. or additional information contact Unique ltd.
Product specifications are subject to change without notice. Appearance of products may differ slightly from catalog.

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5. Heating Ele ent Reco endations
Data applicable for R410A. or additional information contact Unique ltd.
Product specifications are subject to change without notice. Appearance of products may differ slightly from catalog.
Mod l
H ating
El m nt
Kw
1-Ph Units 3-Ph Units
Curr nt
Amp.
Fus
Amp.
Curr nt
Amp.
Fus
Amp.
WS-12 1.5 6.8 10 3x2.2 3x6
WS-15 2 9.1 10 3x3.1 3x6
WS-22 3 13.7 16 3x4.6 3x6
WS-28 4 18.2 20 3x6.1 3x10
WS-36 5 22.8 25 3x7.6 3x10
WS-43 6 27.3 32 3x9.1 3x16
WS-48 6 - - 3x9.1 3x16
WS-54 8 - - 3x12.2 3x16
WS-61 9 - - 3x13.7 3x16
WS-75 9 - - 3x13.7 3x16
WS-85 10 - - 3x15.2 3x20
WS-102 12 - - 3x18.2 3x20
WS-120 14 - - 3x20.3 3x25
WS-144 17 - - 3x26 3x32

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6.1 Refrigeration Cycle – Cooling Only

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6.2 Refrigeration Cycle – Heat Pu p

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7. INSTALATION INSTRUCTIONS
7.1 General
All parts and accessories are packed and shipped with appropriate measure to ensure that
everything is protected during transportation.
The installation team must be familiar with the installation requirements, to e ercise due care
in handling and to prevent damage to the equipment.
The following instructions are in addition to any state and municipal regulations which may
apply. These instructions do not cover all features concerning HVAC installation or methods
of procedure.
The appliance shall be installed in accordance with the national wiring regulations.
The installation must be performed in accordance with manufacturer's specifications using
only approved piping, original cables and original accessories.
Note: The appliance is classified as a stationary class I motor-operated appliance.
7.2 Electrical Requirements
• The appliance is stationary and shall be connected to the electrical supply by fi ed
wiring.
• The air conditioner must be directly connected to an appropriate power supply.
• Use only fuses as specified in the data tables.
• Use only a single length power cable, without e tensions.
• If the supply cord is damaged, it must be replaced by a qualified electrician and in
accordance with national wiring regulations.
• Cable and conduit entries shall be suitable for cables or conduits having ma imum
overall diameters of 14 mm and 16 mm (23 mm in USA and Canada), respectively.
Introduction of conduit or cable does not reduce clearances below 2 mm for basic
supplementary insulation and 2 mm for functional insulation.
• Supply cord shall not be lighter than each of the following (a lower number in the
code designation of the cord in IEC 60227 or IEC 60245 indicates a lighter type):
a. Ordinary tough rubber sheathed cord (code designation 60245 IEC 53)
b. Light polyvinyl chloride sheathed cord (code designation 60227 IEC 53)
• Nominal cross-sectional area for conductors of supply cord (cable for fi ed wiring)
shall be 2.5-6 mm².
• Supply cord shall not be in contact with sharp points or edges of the appliance.
• The supply cord shall have a green/yellow core that is connected to the earthing
terminal of the appliance and to the earth contact of the outlet.
• Conductors of supply cords shall not be consolidated by lead-tin soldering where they
are subjected to contact pressure, unless the clamping means is constructed so that
there is no risk of bad contact due to cold flow of the solder.
• Mounting the cord to part of the enclosure shall not damage the insulation of the
supply cord.
• Chord anchorages shall be arranged so that they are only accessible with the aid of a
tool or shall be constructed so that the cord can only be fitted with the aid of a tool.
• The insulated conductors of the supply cord shall be additionally insulated from
accessible metal parts by basic insulation. This insulation may be provided by the
sheath of the supply cord or by other means.

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• The arrangement of the terminals, or the length of the conductors between the cord
anchorage and the terminals, shall be such that the current carrying conductors become
taut before the earth conductor if the cord slips out of the cord anchorage.
• Conditional connection to power network provides not more than 0.09 ohm of power
system impedance.
Im ortant! Means for disconnecting from the supply mains, having a contact
separation in all poles that provide full disconnection under overvoltage category III,
shall be incorporated in the fi ed wiring and directly connected to the supply
terminals, in accordance with the wiring rules.
Im ortant! Means for disconnection from supply mains must be incorporated in the
fi ed wiring in accordance with the national wiring regulations.
Im ortant! The control wires between the main control bo and the wall mounted
thermostat utilize low voltage 12V DC.
The supply (mains) cable and control wire (flat cable between the wall mounted
thermostat Alfa 261 and electrical bo ) shall be passed in separate (different) ducts
and not in pro imity to each other.
Note: Main circuit breaker and power supply must always be ON in models that
their compressor is equipped with oil heating element.
If disconnected, make sure that power supply was ON for at least 6 hours before
starting the unit.
Note: The appliance is suitable for indoor use only.
Warning! Failure to comply with these instructions may cause malfunction of the
unit.
Im ortant! In case where an electrical valve for entering or e iting cooling water is
being used - verify that valve is open before the compressor starts.

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1
4
8
9
3
10
11
12
5
6
3
2
7
7.3 Ty ical WS Installation
Fig. 7-1
1. Rubber Shock Absorbers. 7. Control Unit.
2. Strainer. 8. Electrical cable.
3. PTFE or Rubber ring. 9. Acoustic Insulation.
4. Fle ible hose. 10. Hanger Mounting Brackets.
5. Cut-Off Valves. 11. Hanger Anchors.
6. Rubber Joints (Siphon, T-Connection and Drain Hose). 12. Air Vent Plug.

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7.4 Unit Location and Installation
• Install the unit in a location with convenient access to the service panels, air filter and
control bo . See Fig. 7-2 for minimum permissible distances to adjacent structures.
• Protect the unit from any heat source.
• Make sure that the unit is level.
• For all models, hanging installation is commonly used. Installing the unit resting on a
rigid surface is allowed.
• Carefully plan the drainage hose path at a minimum slope of 2%, avoiding sharp
bends or water traps.
Fig. 7-2
7.4.1 Installing the Unit Directly On the Ceiling (Fig. 7-1)
• Select the installation location according to the above mentioned considerations and
guidelines.
• Mark 4 holes on the ceiling, according to the unit's mounting bracket holes (10).
• Drill adequate holes and fi the long ceiling anchors (11) in position.
• Lift up the unit onto the hanger anchors through the mounting brackets. Insert four
rubber shock absorbers on the four anchors, as shown in Fig. 7-1. Lock the assembly
with the lock nut.
• Should the unit be installed on a rigid surface, stick four rubber absorbtion cushions
on the four corners of the base.
• In any mode of installation it is recommended to place under the unit an acoustic
insulation sheet (9).
7.5 Connecting the Water Pi ing
• Clearly identify the water supply piping.
• An e ternal safeguard device shall be connected to the water source to limit its output
pressure (in e cess of atmospheric pressure) to 6 bar.
• Use fle ible hoses (4) to connect the water piping according to Fig. 7-3. For piping
size see technical data tables. Use only premium quality fle ible hoses and make sure
it withstands the system water pressure. (Note: Ample pressure hoses must be installed
in tall buildings.)

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• Connect the incoming water to the WATER IN connection and the return water to the
WATER OUT connection. Use adequate thread sealant and also the supplied sealing
ring (3).
• The supplied strainer (2) must be installed on the WATER IN connection. See Fig. 7-1.
Install the strainer with the drain plug facing down, in a location with convenient
service access.
• Complete the water piping installation and open the two cut-off valves (5). Allow
water to flow in and out the unit.
• Carefully open the air vent plug (12). Release all air from the system and close the
plug back.
• Inspect all connections for water leaks. It is common practice to leave open the two
cut-off valves (5) throughout the rest of the installation and occasionally inspect the
piping for leaks.
Fig. 7-3
Fle ible tube to water
system 1 1/2"
Double fitting
1 1/2"
Connector
1 1/2"
Cupper adaptor
screwing 1 1/2"
WS Unit
120
-
144
Water out
Water in
Water out
Water in
WS Unit
12-102
Fle ible tube to water
system 3/4", 1", 1 1/4"
Rubber seal
3/4", 1", 1 1/4"
Cupper adaptor
screwing 3/4", 1", 1 1/4"