Unique WS Series, WS-12, WS-15, WS-22, WS-28 Service Manual

Service Manual

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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 number-one priority when designing products. Please
read all the safety information and the instructions completely prior to beginning the
installation and operation of the unit.

UNIQUE products are designed for HVAC use. Using this equipment for any other
purpose or in a way not within the operation recommendations specified in this manual
will void the warranty and may cause injury. This manual is designed to provide
comprehensive installation/operation information for this UNIQUE product. The table
of contents provides a convenient overview of the information in this manual.

Follow Safety Instructions! Carefully read all safety messages in this manual and on
the equipment. Follow recommended practices and safe operating practices. Keep
Safety Signs in good condition. Replace missing or damaged Safety Signs.

Danger! In plannig the location of the equipment, take into consideration any areas
that could present an unsafe situation. Avoid power lines that could come into contact
with the equipment.

Warning! – Electrical Safety. To avoid electrical shock, place equipment in a safe
area, use guards around control panels and always shut off and lock out control boxes
when working on equipment.
In selecting electrical equipment to be used with the installation, you must use
equipment conforming to applicable local or international codes or regulations.

Important! Check all equipment for warning, danger and Caution Decals, before
equipment is operated.
Do not by-pass or take shortcuts with electrical safety equipment. Make sure electrical
equipment is properly installed and grounded by a qualified electrician, and that it
meets 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 assembly and operational procedures may cause
damage to equipment 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 water 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 well as helpful information on electrical wiring diagrams and
refrigeration cycle diagrams for the various models.

Product specifications are subject to change without notice. Appearance of products
may differ slightly from manual images.

1.1 Product Overview

Unique-WS air conditioners are operating with water 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
with low maintenance requirements and provides efficient year-round cooling and heating.
The units are suitable for cooling tower installations, ground water sources or open water
circuits.

Unique-WS air conditioners feature heat pump facilities for heating, utilizing a 4-way
reversing valve which switches the unit into heating mode. In heating mode adequate
temperature of the cooling water must be insured.

Alternatively, electric heating elements can be used for heating. In such configuration the
units are equipped with 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 water input temperature range of minimum 16ºC and maximum 35ºC.

All Unique-WS air conditioners are ISO

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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 Nameplate Information

Technical information for a specific unit appears on the unit nameplate, which is attached to
the indoor and/or the outdoor units.

The unit nameplate includes the following information:

MODEL Air-conditioner model name

CLIMATE CLASS Class T1 – Standard conditions.

VOLT/PHASE/Hz A/C power supply, for example: 400/3/50 = 400V/3 Phase/50 Hz.

COS φ

Power factor for the unit.

FUSE Required fuse size, Amp.

CAPACITORS μF

Compressor capacitor, Fan capacitor (wherever applicable)

AIR FLOW m³/h Air Flow at High Speed in m³/h

AIR FLOW cfm Air Flow at High Speed in cfm

WATER FLOW m³/h Water Flow in m³/h

WATER FLOW gpm Water Flow 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 Power consumption in cooling and heating modes, watts.

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

Heating capacity

(1)

Watt 4247 5331 7469 9813

Btu/h 14500 18200 25500 33500

Power
Consumption

(2)

Cooling Watt 859 1066 1588 2103

Heating Watt 1036 1300 1822 2336

Operating
Current

(2)

Cooling Amp. 6.0 6.6 9.5 13.3

Heating Amp. 6.0 8.7 12.0 16.9

C.O.P

Cooling 3.82 3.90 3.93 3.90

Heating 4.10 4.10 4.10 4.20

Air Flow

M

3

/h 680 850 1190 1530

CFM 400 500 700 900

Net Static Pressure

(3)

mm H2O

5 2.5 2.5 2.5

Water Flow

M

3

/h 0.6 0.8 1.1 1.5

GPM 2.6 3.3 4.9 6.5

Heat Rejection-Cooling

Watt 4140 5225 7827 10305

Btu/h 14133 17839 26721 35180

Heat Extraction-Heating

Watt 3211 4031 5647 7477

Btu/h 10963 13762 19280 25525

Power Supply V/Ph/Hz

230/1/50

(4)

230/1/50

(4)

230/1/50

(4)

230/1/50

(4)

Time Delay Fuse Amp. C10 C10 C16 C20

Water Piping in/out BSP 3/4" 3/4" 3/4" 1"

Drain mm 19 19 19 19

Refrigerant Charge gr. 1100 1100 1200 1300

Dimensions (LxWxH) mm 880x600x400 880x600x400 960x600x460 1040x600x460

Net Weight Kg. 67 70 80 94

1. Design data for cooling: Air entering temperature 27ºC db/19ºC wb and water inlet temperature 29ºC
Design data for heating: Air entering temperature 21ºC and water inlet temperature 20ºC

2. Excluding electrical heating element.

3. Net static pressure available at fan discharge at nominal capacity.

4. Available also in 400/3/50.

Data applicable for R410A. For 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

Heating capacity

(1)

Watt 12390 14382 15847 18893 20240

Btu/h 42300 49100 54100 64500 69100

Power
Consumption

(2)

Cooling Watt 2689 3259 3553 4015 4550

Heating Watt 3098 3508 3865 4608 5060

Operating
Current

(2)

Cooling Amp 17.7 18.1 3x8.1 3x10.0 3x10.5

Heating 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

Heating 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

Net Static Pressure

(3)

mm H2O

3.8 5 5 5 5

Water 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

Heat Rejection-Cooling

Watt 13205 15708 17232 19715 21978

Btu/h 45080 53626 58830 67307 75034

Heat Extraction-Heating

Watt 9292 10874 11982 14285 15180

Btu/h 31723 37124 40907 48768 51825

Power Supply V/Ph/Hz

230/1/50

(4)

230/1/50

(4)

400/3/50 400/3/50

400/3/50

Time Delay Fuse Amp. C20 C25 3xC16 3xC16 3xC16

Water Piping in/out BSP 1" 1" 1" 1" 1"

Drain mm 19 19 19 22.2 22.2

Refrigerant Charge gr. 1500 1600 2300 2600 2700

Dimensions (LxWxH) mm 1090x600x520 1290x600x520 1290x600x560 1370x700x560 1370x700x560

Net Weight Kg. 108 115 125 137 145

1. Design data for cooling: Air entering temperature 27ºC db/19ºC wb and water inlet temperature 29ºC
Design data for heating: Air entering temperature 21ºC and water inlet temperature 20ºC

2. Excluding electrical heating element.

3. Net static pressure available at fan discharge at nominal capacity.

4. Available also in 400/3/50.

Data applicable for R410A. For 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

Heating capacity

(1)

Watt 25395 28910 34974 40715 49502

Btu/h 86700 98700 119400 139000 169000

Power
Consumption

(2)

Cooling Watt 5573 6314 7601 8862 10646

Heating Watt 6194 6883 8743 9930 11786

Operating
Current

(2)

Cooling Amp 3x14.9 3x16.2 3x18.2 3x22.4 3x31.1

Heating Amp 3x16.9 3x18.3 3x21.2 3x26.0 3x35

C.O.P

Cooling 3.90 3.92 3.90 3.92 3.94

Heating 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

Net Static Pressure

(3)

mm H2O

6.4 6.4 6.4 7.6 8.9

Water 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

Heat Rejection-Cooling

Watt 27307 31065 37244 43601 52591

Btu/h 93226 106056 127150 148855 179545

Heat Extraction-Heating

Watt 19201 22027 26231 30785 37716

Btu/h 65554 75201 89551 105099 128763

Power Supply V/Ph/Hz 400/3/50 400/3/50

400/3/50

400/3/50

400/3/50

Time Delay Fuse Amp. 3xC20 3xC25 3xC25 3xC40 3xC40

Water Piping in/out BSP 1¼" 1¼" 1¼" 1½" 1½"

Drain mm 22.2 22.2 22.2 30 30

Refrigerant Charge gr. 3200 3700 3900 4200 6000

Dimensions (LxWxH) mm 1510x700x600 1540x750x610 1650x850x610 2050x1000x630 2050x1100x660

Net Weight Kg. 165 185 195 255 325

1. Design data for cooling: Air entering temperature 27ºC db/19ºC wb and water inlet temperature 29ºC
Design data for heating: Air entering temperature 21ºC and water inlet temperature 20ºC

2. Excluding electrical heating element.

3. Net static pressure available at fan discharge at nominal capacity.

4. Available also in 400/3/50.

Data applicable for R410A. For 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 W SC-15 WSC-22 WSC-28

Cooling capacity

(1)

Watt 3281 4159 6239 8202

Btu/h 11200 14200 21300 28000

Heating capacity

(1)

Watt 4247 5331 7469 9813

Btu/h 14500 18200 25500 33500

Power
Consumption

(2)

Cooling Watt 859 1066 1588 2103

Heating Watt 1036 1300 1822 2336

Operating
Current

(2)

Cooling Amp. 6.0 6.6 9.5 13.3

Heating Amp. 6.0 8.7 12.0 16.9

C.O.P

Cooling 3.82 3.90 3.93 3.90

Heating 4.10 4.10 4.10 4.20

Air Flow

M

3

/h 680 850 1190 1530

CFM 400 500 700 900

Net Static Pressure

(3)

mm H2O

5 2.5 2.5 2.5

Water Flow

M

3

/h 0.6 0.8 1.1 1.5

GPM 2.6 3.3 4.9 6.5

Heat Rejection-Cooling

Watt 4140 5226 7827 10305

Btu/h 14133 17839 26721 35180

Heat Extraction-Heating

Watt 3211 4031 5647 7477

Btu/h 10963 13762 19280 25525

Power Supply V/Ph/Hz

230/1/50

(4)

230/1/50

(4)

230/1/50

(4)

230/1/50

(4)

Time Delay Fuse Amp. C10 C10 C16 C20

Water Piping in/out BSP 3/4" 3/4" 3/4" 1"

Drain mm 19 19 19 19

Refrigerant Charge gr. 1100 1100 1200 1300

Dimensions (LxWxH) mm 1100x350x700 1100x350x700 1350x350x700 1350x350x700

Net Weight Kg. 62 65 75 75

1. Design data for cooling: Air entering temperature 27ºC db/19ºC wb and water inlet temperature 29ºC
Design data for heating: Air entering temperature 21ºC and water inlet temperature 20ºC

2. Excluding electrical heating element.

3. Net static pressure available at fan discharge at nominal capacity.

4. Available also in 400/3/50.

Data applicable for R410A. For 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. Dimensions and Weights – Split Condenser Units

Model

LxWxH

Refrigerant Tubing

Connections

Water Inlet Weight

mm

Liquid (Small)

inch

Suction (Large)

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"

1¼"

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. For 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 Element Recommendations

Data applicable for R410A. For additional information contact Unique ltd.
Product specifications are subject to change without notice. Appearance of products may differ slightly from catalog.

Model

Heating

Element

Kw

1-Ph Units 3-Ph Units

Current

Amp.

Fuse

Amp.

Current

Amp.

Fuse
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