Nibe CLIMA COOL UCA 20 Instruction manual
Packaged Air Cooled Modular Chiller
Water Cooled, Heat Pump, Heat Recovery, Free Cooling and
Simultaneous Heating & Cooling Heat Pump
Model UCA: 20, 30, 50 and 70 tons
Installation, Operation & Maintenance Manual
• •
on
DEMAND
®
S
IMULTANEOUS HEATING AND COOLING
95B0059N01
Doc#: 97B0089N01 | Rev: May 5, 2023
Rev: May 5, 2023
www.climacoolcorp.com
Introduction .........................................1
Pre-Installation .......................................2
Model Key ...........................................3
Physical Data.......................................4-6
Dimensional Data and Drawings ......................7-9
Rigging and Lifting Procedures ........................10
Mounting Rail and Vibration Isolation ................11-12
Recommended Service Clearances.....................13
Unit Installation ...................................14-15
Electrical Connections................................16
Communications Wiring ..............................17
Wiring Diagram-Voltage/Phase Monitor ................18
Water Piping ..................................... 19-20
..........................21
Hydronic Refrigeration ...............................22
Part-Load Performance Advantage ....................23
Filling the Water System..............................24
Water Treatment ....................................25
Water Temperature Requirements.....................26
Operating Limits.....................................27
Pre-Startup .........................................28
Pre-Startup Check List................................29
Startup.......................................... 30-31
Superheat & Subcooling Flow Chart....................32
Startup and Warranty Registration Form ...............33
Operation and Maintenance .......................34-35
Condenser Fans .....................................36
Heat Exchangers ....................................37
Cleaning Arrangement ...............................38
Compressor Information .............................39
Refrigeration Circuit Diagrams .....................40-43
Head Pressure Control Valve Operation (LAC) ...........44
Refrigeration Systems Re-Processing and Charging ......45
...................46-47
Options & Accessories ...............................48
Stainless Steel Strainer Option .....................49-53
WYE Strainers ....................................54-55
Basket Strainers ..................................56-57
Electrical Data....................................58-59
Power Distribution Drawing...........................60
Wiring Diagrams..................................61-88
Troubleshooting Guide ............................89-90
Warranty ...........................................91
Revision History .....................................94
Table of Contents
Rev: May 5, 2023 1
www.climacoolcorp.com
General Description
ClimaCool’sAir Cooled Packaged Modular Chiller, Model
UCA, are available in 20, 30, 50 and 70 tons and can be
requirements from 20 to 420 tons. By simply adding
modules, the UCA can satisfy future incremental growth
needs. This model is a quiet, serviceable and extremely
Safety
Throughout this manual warning, danger, caution and
attention notices appear. Read these items carefully before
attempting any installation, service or troubleshooting of
the equipment. All labels on unit access panels must be
observed.
WARNING: Indicates potentially hazardous situation which, if
not avoided, could result in death or serious injury.
DANGER: Indicates an immediate hazardous situation which, if
not avoided, will result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation or an
unsafe practice which, if not avoided, could result in minor or
moderate injury or product or property damage.
ATTENTION: Notication of installed, operation or maintenance
information which is important, but not hazard related.
Introduction
ATTENTION
If chilled water is to be maintained at a temperature below 40°F (4.4°C) or
outdoor temperatures are expected to be below 32°F (0°C), an antifreeze
suction temperatures.
ATTENTION
ATTENTION
WARNING/ADVERTISSEMENT
WATER AND REFRIGERANT
SYSTEMS UNDER
PRESSURE
EAU ET FRIGORIGÈNE
EQUIPEMENTS SOUS
PRESSION
•
•
•
•
peut entraîner des dommages
matériels des blessures corporelles
WARNING/ADVERTISSEMENT
VERY HOT WATER! L’ E A U T R ÉS CHAUDE!
ATTENTION
the relief setting.
CAUTION/ATTENTION
solids and other improper water
conditions WILL DAMAGE the
internal heat exchanger and WILL
VOID YOUR WARRANTY!
et les autres impropre conditions de
l’eau ENDOMMAGERA l’échangeur
de chaleur interne et ANNULERA
VOTRE GARANTIE!
CAUTION/ATTENTION
conductors.
ne sont pas conçus pour accepter
CAUTION/ATTENTION
Single wall heat exchanger, not
suitable for potable water connection.
Single paroi echangeur, non approprié
pour le raccordement d’eau potable.
WARNING/ADVERTISSEMENT
le dépannage de l’appareil.
CAUTION/ATTENTION
pressure before using torch.
Conifer la maintenance à un
détrulre correctement.
CAUTION/ATTENTION
3 PHASE SCROLL
COMPRESSOR UNIT
UNITÉ COMPRESSEUR
SCROLL 3-PHASE
If this unit uses a 3 Phase Scroll
Compressor, the following instructions
MUST BE followed:
• MUST BE wired
damage to the 3 Phase Scroll
Compressor;
• Scroll Compressors with
INCORRECT rotation show the
following characteristics:
discharge pressure;
•
characteristsics exist, swap
compressor for incorrect rotation.
Si cet appareil utilise compresseur
•
•
rotation incorrecte montrent les
et une faible pression de
décharge;
• Si l’un des trois éléments
remplies, échanger deux des trois
la rotation du compresseur.
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Rigging and Lifting
Each module should be lifted by using a fork lift. If it is
necessary to utilize a crane for rigging or lifting each module
shall be lifted by using lifting straps and spreader bars
Procedures on page 10.
Warranty
To ensure proper equipment longevity, design performance
and reliability, all ClimaCool chillers must be installed,
operated and maintained in accordance with ClimaCool
IO&M manuals. Water quality is of the utmost importance
for the proper care and maintenance of your modular chiller
system and regular treatment of the water will increase
longevity of your system. Failure to provide adequate
ClimaCool module’s warranty. A factory authorized technician
is required to perform the startup of your ClimaCool chiller.
Please contact the ClimaCool Service Department at 405-
schedule. There is a minimum of (three) 3 weeks notice
required to schedule your factory startup.
Inspection
Upon receipt of equipment, carefully check the shipment
against the Bill of Lading and inspect each chiller for any
damage incurred during shipment. Verify all components
and loose parts immediately upon receipt. Note any
damage on the Bill of Lading immediately and in the
presence of the freight carrier’s delivering agent. Report
documents in accordance with ICC regulations. It is the
responsibility of the recipient to contact ClimaCool Corp.
Thoroughly check for any visible damage of control
panels, electrical and/or refrigeration components or
broken copper lines. Be sure the nameplate voltage
agrees with the site voltage. The carrier must make proper
notation of any damages or shortages on all copies of the
Bill of Lading and complete a common carrier inspection
NOTE: It is the responsibility of the purchaser to le
all necessary claims with the carrier. In addition, please
notify the ClimaCool Customer Service Department at 405-
damage immediately.
Storage
Installation and storage of Packaged Air Cooled chillers,
in locations with ambient temperatures below 36°F, will
require a suitable antifreeze solution. See page 26 for
more information.
Handling of Modules
Carefully remove the module’s packaging. The chiller’s
steel base cutouts provide maneuverability by forklift
Lifting Procedures Figures 7, 8 and 9 on page 10). Verify
that all header grooved couplings, groove by groove 6”
nipples and mounting hardware kits are on site prior to
connecting the modules.
Pre-Installation
ATTENTION
If chilled water is to be maintained at a temperature below 40°F (4.4°C) or
outdoor temperatures are expected to be below 32°F (0°C), an antifreeze
suction temperatures.
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Packaged Air Cooled Modular Chiller Model Key
REJECTION MEANS
A = Air Cooled Package (Outdoor)
F = Free Cooling Module
(Available in 30 & 70 Ton Only)
MODEL CONFIGURATION
B = Bird Screen
D = Coated Condenser
F = Condenser Coil Hail Guard
H = Headerless Module
I = Coated Condenser with Bird Screen
J = Coated Condenser with Hail Guard
K = Headerless Module with Condenser Hail Guard
L = Headerless Module with Condenser Coil Coa�ng
N = Headerless Module with Condenser Coil Coa�ng and Hail Guard
P = Headerless Module with Condenser Coil Coa�ng, Hail Guard and Bird Screen
R = Coated Condenser with Hail Guard and Bird Screen
S = Standard
T = Headerless Module with Condenser Hail Guard and Bird Screen
U = Headerless Module with Coated Condenser and Bird Screen
Y = Condenser Coil Hail Guard with Bird Screen
Z = Headerless Module with Bird Screen
NOMINAL TONS
020 (N/A for Free Cooling Module)
030
050 (N/A for Free Cooling Module)
070
DESIGN SERIES
B
C (for all UCA070 only)
VOLTAGE
F = 460/3/60
H = 208-230/3/60
N = 575/03/60
REFRIGERANT OPTIONS
CONTROLS & ELECTRICAL
0 = None - Standard Low Ambient to 20˚F in Cooling Mode and 15˚F in Hea�ng Mode
B = Hot Gas Bypass - Both Circuits
M = Low Ambient to 0°F with Hot Gas Bypass - Both circuits
N = Low Ambient to 0°F
A = Standard Controls
B = 65 KA SCCR
H = Heat Trace
I = Single Unit w/65 KA & HT
N = Fail to Run
S = Single Module Controls
T = Single Module Controls with LonWorks
U = Single Unit w/65 KA
W = 65 KA & Heat Trace
5 = Fail to Run & Heat Trace
6 = 65 KA & Fail to Run
7 = 65 KA & Fail to Run & Heat Trace
WATER ISOLATION VALVES
E = Evap. Motorized Valves
M = Manual Valves for Evap
COMPRESSOR TYPE
D = Digital Scrolls (20 & 30 Ton Only)
E = Sound Blankets
L = Digital Scrolls & Sound Blankets
R = Lead VFD & Sound Blankets
S = Scroll
T = Lead VFD
APPLICATION
REFRIGERANT
C = Cooling
T = Reverse Cycle (Heat Pump)
U = Simultaneous Hea�ng & Cooling Heat Pump (4 headers)
A = R-410A
0 0A ASA CBUC F S020
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Model Key
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Physical Data
Model UCA Cooling Only Heat Pump SHC1
20 30 20 30 20 30
218.4 2 7.5 17.9 26.7 17. 9 26.7
10.3 10.3 9.97 9.97 9.97 9.97
222222
scroll scroll scroll scroll scroll scroll
222222
10 15 10 15 10 15
50 56 50 54 50 54
32,250 2,410 2,250 2,410 3,115 3,275
42,035 2,195 2,035 2,195 2,735 2,895
Condenser Fans 20 30 20 30 20 30
T.E. T.E. T.E. T.E. T.E. T.E.
2.0 2.0 2.0 2.0 2.0 2.0
121212
Axial Axial Axial Axial Axial Axial
Diameter 31.5” 31.5 31.5” 31.5 31.5” 31.5
11,000 10,500 11,000 10,500 11,000 10,500
11,000 21,000 11,000 21,000 11,000 21,000
1,10 0 1,10 0 1,10 0 1,100 1,10 0 1,10 0
650 650 650 650 650 650
Condenser Coils 20 30 20 30 20 30
Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum
Copper Copper Copper Copper Copper Copper
22” x 78” (4) 22” x 78” (4) 22” x 78” (4) 22” x 78” (4) 22” x 78” (4) 22” x 78” (4)
444444
Fins Per Inch 12 12 12 12 12 12
Evaporator 20 30 20 30 20 30
Brazed Plate Brazed Plate Brazed Plate Brazed Plate Brazed Plate Brazed Plate
222222
2.6 2.6 2.6 2.6 2.6 2.6
39.6 39.6 39.6 39.6 76.6 76.6
300 300 300 300 300 300
56” 6” 6” 6” 6” 6”
NOTES:
1.
2.
3.
4.
5.
6.
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Physical Data
Model UCA Cooling Only Heat Pump SHC
50 70 50 70 50 70
244.0 62.7 41.4 59.0 41.4 59.0
210.5 10.1 9.88 9.601 9.88 9.601
2.0 2.0 2.0 2.0 2.0 2.0
Scroll Scroll Scroll Scroll Scroll Scroll
222222
25 35 25 35 25 35
114 124 114 124 114 124
34,101 4,275 4,101 4,275 4706 4880
43,855 4,005 3,855 4,005 4,255 4,405
Condenser Fans 50 70 50 70 50 70
T.E. T.E. T.E. T.E. T.E. T.E.
1.5 1.5 1.5 1.5 1.5 1.5
444444
Axial Axial Axial Axial Axial Axial
Diameter 31.5 31.5 31.5 31.5 31.5 31.5
10,500 10,500 10,500 10,500 10,500 10,500
42,000 42,000 42,000 42,000 42,000 42,000
1,100 1,10 0 1,10 0 1,100 1,10 0 1,10 0
650 650 650 650 650 650
Condenser Coils 50 70 50 70 50 70
Aluminum Aluminum Aluminum Aluminum Aluminum Aluminum
Copper Copper Copper Copper Copper Copper
22” x 78” (8) 22” x 78” (8) 22” x 78” (8) 22” x 78” (8) 22” x 78” (8) 22” x 78” (8)
444444
Fins Per Inch 12 12 12 12 12 12
Evaporator 50 70 50 70 50 70
Brazed Plate Brazed Plate Brazed Plate Brazed Plate Brazed Plate Brazed Plate
222222
4.9 7.7 4.9 7.7 4.9 7.7
43.5 48.4 43.5 48.4 43.5 48.4
300 300 300 300 300 300
6” 6” 6” 6” 6” 6”
NOTES:
1.
2.
3.
4.
5.
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Physical Data
Free Cooling Free Cooling
Fans 30 70
T.E. T.E.
2.0 2.0
2 4
Axial Axial
Diameter 31.5 31.5
21,000 42,000
1,10 0 1,10 0
Free Cooling Coils 30 70
Aluminum Aluminum
Copper Copper
20” x 78” (4) 20” x 78” (8)
6 6
Fins Per Inch 8 8
Miscellaneous Information 30 70
300 300
6” 6”
12,000 4,000
21,590 3,18 0
NOTES:
1.
operational weight.
2.
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Dimensional Data and Drawings
Model
UCA Voltage
A
Unit Width
(in.)
B
Unit Height
(in.)
C
Unit Depth
(in.)
D
Header
Location
(in.)
E
Header
Location
(in.)
Header
Connection
(in.)
020 92 6
030 92 6
Model
UCA1Voltage
A
Unit Width
(in.)
B
Unit Height
(in.)
C
Unit Depth
(in.)
D
Header
Location
(in.)
E
Header
Location
(in.)
F
Header
Location
(in.)
Header
Connection
(in.)
050 6
070 6
NOTE:
Figure 1 - Cooling Only, UCA 020 & 030
Figure 2 - Cooling Only, UCA 050 & 070
Air
Discharge
Control
Box
B
A
Air
Discharge
C
D
E
F
Air
Intake Air
Intake
Air
Intake Air
Intake
Chilled
Water
Inlet
Chilled
Water
Outlet
Control
Box
B
A
Air
Discharge
Air Intake
Air Intake
C
D
E
Air
Discharge
Chilled
Water
Outlet
Chilled
Water
Inlet
Control
Box
B
A
Air
Discharge
UCA 020 UCA 030
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Dimensional Data and Drawings
Model
UCA1Voltage
A
Unit Width
(in.)
B
Unit Height
(in.)
C
Unit Depth
(in.)
D
Header
Location
(in.)
E
Header
Location
(in.)
F
Header
Location
(in.)
G
Header
Location
(in.)
Header
Connection
(in.)
020 SHC 92 6
030 SHC 92 6
Model
UCA1Voltage
A
Unit Width
(in.)
B
Unit Height
(in.)
C
Unit Depth
(in.)
D
Header
Location
(in.)
E
Header
Location
(in.)
F
Header
Location
(in.)
G
Header
Location
(in.)
Header
Connection
(in.)
050 SHC 6
070 SHC 6
NOTES:
Figure 3 - Simultaneous Heating & Cooling 020 & 030
Figure 4 - Simultaneous Heating & Cooling 050 & 070
Air
Discharge
B
A
Control
Box
Air
Discharge
Air
Discharge
Air
Intake Air
Intake
Air
Intake Air
Intake
Chilled
Water
Inlet
Hot
Water
Outlet
Hot
Water
Inlet
Chilled
Water
Outlet
C
D
E
FG
A
B
Air
Discharge
Control
Box
Air
Discharge
Air Intake
Air Intake
C
D
FG
E
Chilled
Water
Inlet
Chilled
Water
Outlet Hot
Water
Outlet
Hot
Water
Inlet
Control
Box
B
A
Air
Discharge
UCA 020 UCA 030
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Model
UCF Voltage
A
Unit Width
(in.)
B
Unit Height
(in.)
C
Unit Depth
(in.)
D
Header
Location
(in.)
E
Header
Location
(in.)
F
Header
Location
(in.)
Header
Connection
(in.)
030
92 6
Model
UCF1Voltage
A
Unit Width
(in.)
B
Unit Height
(in.)
C
Unit Depth
(in.)
D
Header
Location
(in.)
E
Header
Location
(in.)
F
Header
Location
(in.)
Header
Connection
(in.)
070
6
NOTE:
Dimensional Data and Drawings
Figure 5 - Free Cooling, UCF 030
Figure 6 - Free Cooling, UCF 070
Air
Discharge
B
A
Control
Box
C
Air
Intake
Air
Intake
Air
Intake
Air
Intake E
F
D
Chilled
Water
Inlet
Chilled
Water
Outlet
Air
Discharge
Air Intake
Air Intake
C
E
F
D
Chilled
Water
Inlet
Chilled
Water
Outlet
B
A
Control
Box
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Lifting and Transporting Modules
Forklifts are required for lifting and transporting the module. Each module has base cutouts provided for ease of maneuverability.
Figure 9
Rigging and Lifting Procedures
Figure 8Figure 7
Lifting Strap
Spreader Bar
Spreader Bar
Spreader Bar
Lifting Strap
Rigging
Each module should be lifted by using lift straps threaded through the steel base cutouts and the use of a spreader bar.
NOTE: If no spreader bar is used, damage to the unit may occur.
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Recommended Anchor Locaons
0.563” Hole Diameter Typ. 0.56” Typ.
Base Rails
2.19”
81.38”81.38”
3.25”
170.5”
2.19”
36”
1.75”
1”
Figure 10 - UCA 020 - 030 Support Rails and Anchor Locations
UCA 050 - 070 Bolt Holes
ClimaCool recommends locking down the chiller to a concrete base or with the two (2) 4” base mounting rails using the six
bolt holes provided in each base pan (see Figure 10). Due to the low vibration of the modules, ClimaCool does not require
the application of spring isolators or pads. Should isolators or pads be desired, install in accordance with Figures 11 and 12.
Mounting Rail and Vibration Isolation
22-3/8
29-5/8
4-15/16
22-3/8
29-5/8
83-3/4
80-1/2
81-1/4
4-15/16
11-1/8
11-1/8
1-1/4
9/16"
2-7/16
1-1/4
2-7/16
SKID MOUNTING HOLES
FRONT
REAR
B
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Mounting Rail and Vibration Isolation
Vibration Pads
(by others)
4” Rail Minimum
Recommended
(by others)
Concrete Pad (by others)
Concrete Pad (by others)
Spring Vibration
Isolators (by others)
4” Rail Minimum
Recommended
(by others)
Concrete / Pad (by others)
Concrete / Pad (by others)
Figure 12 - Vibration Isolation Pads Option
Figure 11 - Spring Vibration Isolators Option
NOTE:
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Recommended Service Clearances
NOTES:
clearance for rear service access.
air intake sides.
5. Local building or electrical codes may require additional clearance. Consult applicable codes.
Rear Service Access
Air Intake Air Intake
Service and Air Intake
Clearance
Top View
See Note
6 for side
clearance
See Note
6 for side
clearance
See Note
6 for side
clearance
See Note
6 for side
clearance
Air Intake
Air Intake
Service and Air Intake
Clearance
Service and Air Intake
Clearance
Figure 14 - Back-to-Back Conguration
Figure 13 - End-to-End Conguration for UCA020 or 030 sizes only
36” 36”
42”
42” 42”
42”42”
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Foundation for Unit Placement
The minimum foundation requirement for the ClimaCool
chiller is a level surface capable of bearing the combined
operating weight of the modules (See Physical Data -
page 4-6).
Multiple Units/Banks
Multiple units/banks can be placed next to each other, side
by side, as long as there is at least one width distance (or 84
in) between them, that being the width of the largest unit.
Service Access
Recommended Service Clearances and Bank Dimensions
shown on page 13.
Draining
When performing standard maintenance procedures such
optional water isolation valves for this purpose.
Assembling Modules
ClimaCool recommends locking down the chiller to a
concrete base, or with the two (2) 4” base mounting rails
using the bolt holes provided in the unit base. Although
the compressors are installed on anti-vibration mountings,
further isolation of the chiller from the structure is available
by installing vibration eliminating springs or pads under
the base rails on which the chiller will rest(See page 11 –
Mounting Rail and Vibration Isolation). One end of the
modules should be chosen as the reference module and
carefully located.
Field installed mounting accessories are provided for
• Header grooved coupling kits containing two (2) for
air cooled and heat pump applications and four (4) for
simultaneous heat pump applications.
• Mounting hardware kit containing necessary bolts,
spacers, nuts and washers.
• Header bank end cap kit containing two (2) each
for air cooled and heat pump and four (4) each for
simultaneous heat pump applications.
• Groove by groove 6” nipples, one (1) required per header.
Unit Installation
Field installing the mounting hardware kit will assist
with alignment of the modules in a bank and eliminate
show the end to end and back to back holes for the 1”
spacers between the units. The spacers will allow for a 1”
separation between modules in both the end to end and
Once the spacers are installed, the distance from the
corner post upright will be 1”. Using the appropriate
tools, tighten hardware assembly until seated.
Inspect the pipe ends to ensure they are free from any
defects such as loose paint, scale, dirt, chips, grease and rust.
Inspect the grooved coupling gasket for any defects. Apply a
thin layer of silicone or other non-petroleum lubricant to the
sealing lips of the gasket and to the exterior of the gasket.
Install gaskets on the pipe ends of one of the two modules
to be mated. Be sure the gasket is completely on the pipe so
damage will not occur in the next step.
One groove by groove 6” nipple per header is required to
complete the connection between each module. Move the
second module into position and line up the piping. Ensure
you are maintaining alignment for any additional modules to
be added. When pipe ends are aligned, slide the gasket over
the ends and center it between the grooves. No part of the
gasket should protrude into the groove of either pipe end.
Place the coupling halves over the gasket and make sure
that the coupling keys, (the part that goes into the groove),
are engaged into the grooves. Insert the bolts and install
nuts to hand tight. Make sure that the oval neck of the bolt
engages into the bolt hole of the housing. Tighten nuts
alternately and equally until the bolt pads meet and make
metal to metal contact. Tighten nuts by another 1/4 to 1/2
turn to make sure the nuts and bolts are snug and secure;
the use of a torque wrench is usually not required. Uneven
tightening of bolts may cause the gasket to be pinched
resulting in immediate or delayed leaks.
Assembling Modules Back to Back
for UCA020 & 030 sizes only
Figure 17.
•
header-less unit.
• Loosen the lower 2” grooved coupling from the bottom
header and remove the end cap.
• Lubricate the rubber gasket with approved grooved
coupling lubricant.
•
unit into the 2” grooved coupling on the header where
the end-cap was previously removed.
• Equally tighten the 2 bolts to 15 to 22 ft-lbs of torque.
• Repeat above procedure for the upper hose connection.
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Unit Installation
Figure 15 - Hardware Kit
Figure 16 - Spacer Holes
END TO END SPACER HOLES
BACK TO BACK SPACER HOLES
Figure 17 - Back to Back
Header Insulation
Chilled water piping is pre-insulated on each module at
the factory with 3/4” closed cell insulation. After bolting
all modules together and leak testing, the entire coupling
connection will need to be insulated by the installing
contractor.
Access Panels
and always prior to operation of the bank. Lower side acess
panels are available as an option.
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The voltage imbalance of the three phase circuit is 0.9%.
This is well under the 2% range.
Voltage/Phase Monitor
installation with the CoolLogic Bank Control Panel. The
voltage/phase monitor helps guard the chiller bank against
conditions which could void your warranty. The voltage/
phase monitor has three wires that connect to the main
three phase power chiller bank input. Two low voltage
control wires are connected to the CoolLogic Bank Control
Panel. Do not install control wiring in the same conduit
as line voltage wiring or with wires that switch highly
inductive loads such as contactor and relay coils. NOTE: It
is mandatory to install one (1) monitor per bank at main
power distribution panel to monitor voltage and phasing of
power to the modules. See Wiring Diagram on page 18.
The power for modules is taken from a suitable circuit
breaker/fused disconnect power supply within the main
panel. The electrical service enters the individual modules
through the upper right side of the module’s control panel
enclosure. Proper grounding of the module is mandatory.
Before carrying out any electrical work, conrm that the
main supply is shut o. A typical power wiring is located on
page 60 – Power Distribution Drawing. Knockout drawings
are provided. Do not drill into cabinet; shavings can damage
electronic components. The power for all individual modules
shall be in compliance with all local and national codes.
CoolLogic Control System Wiring
A separate 115 volt power supply is required to power the
CoolLogic Bank Control Panel. Communication between the
Bank Controller and chiller modules requires a simple two-
conductor, 22 AWG shielded cable rated at 60°C minimum,
daisy chain connection. Control wiring cannot be installed
in the same conduit as line voltage wiring or with wires
that switch highly inductive loads such as contactor and
relay coils.
See ARC156 Specications on the next page. Refer
to the Power Distribution schematic on page 60 and
Wiring Diagrams on pages 87-88 of this manual for more
information. All wiring shall be in compliance with all local
and national codes.
Electrical Phase Sequencing
Proper clockwise rotation for scroll compressor motors is
important to prevent damaging the compressors. ClimaCool
recommends the use of a phase sequence indicating
instrument following the manufactures directions. Another
alternative would be to “bump test” the compressors one
at a time with pressure gauges attached to the high and
low gauge ports of the compressors to check for proper
rotation. Energize the compressor for a few seconds to
If the discharge pressure does not increase, proper
rotation is reversed. Compressor rotation can be reversed
by opening the main electrical disconnect and switching
any two of the main power supply leads feeding that
compressor’s contactor.
Proper Voltage Balance
Occasionally, in three phase circuits, a voltage imbalance
occurs between phases. It is not recommended to operate
equipment when an imbalance greater that 2% occurs. This
their longevity. The following example describes how to
calculate the average voltage of the three phases to see if
the imbalance is greater than 2%.
Example: Line 1 = 226v Line 2 = 230v Line 3 = 228v
The average is: (226+230+228)/3 = 228v
Next, [100(228-226)]/228 = 0.9%
Electrical Connections
CAUTION/ATTENTION
conductors.
ne sont pas conçus pour accepter
WARNING/ADVERTISSEMENT
le dépannage de l’appareil.
CAUTION/ATTENTION
pressure before using torch.
Conifer la maintenance à un
détrulre correctement.
CAUTION/ATTENTION
3 PHASE SCROLL
COMPRESSOR UNIT
UNITÉ COMPRESSEUR
SCROLL 3-PHASE
If this unit uses a 3 Phase Scroll
Compressor, the following instructions
MUST BE followed:
• MUST BE wired
damage to the 3 Phase Scroll
Compressor;
• Scroll Compressors with
INCORRECT rotation show the
following characteristics:
discharge pressure;
•
characteristsics exist, swap
compressor for incorrect rotation.
Si cet appareil utilise compresseur
•
•
rotation incorrecte montrent les
et une faible pression de
décharge;
• Si l’un des trois éléments
remplies, échanger deux des trois
la rotation du compresseur.
Rev: May 5, 2023 17
www.climacoolcorp.com
Communications Wiring
Avoiding Noise*
Avoid running communication wires or sensor input
wires next to AC power wires or the controller’s relay
output wires. These can be sources of noise that can
Spark igniters
Variable speed drives
Electric motors (> 1hp)
Generators
Relays
Transformers
Other electronic
modules
Video display devices
Lamp dimmers
Fluorescent lights
Parallel runs with power lines
Large contactors,
(i.e., motor starters)
ARC156 Wiring Specications
list two acceptable alternatives. Halar®has a higher
than SmokeGard®, and it is appropriate for use in
applications where you are concerned about abrasion.
Halar is also less likely to crack in extremely low
temperatures.
ARC156 Specications
Description
Conductor
NOTE:
Insulation Foamed FEP
0.015 in. (0.381 mm) wall
Color code
Twist lay
Shielding
Jacket SmokeGard®
0.021 in. (0.5334 mm) wall
Halar®(ECTFE)
0.010 in. (0.254 mm) wall
DC resistance
Capacitance
Characteristic impedance
Weight
UL temperature rating SmokeGard®
167°F (75°C)
Halar®
Voltage
Listing
WARNING/ADVERTISSEMENT
communication wiring, installer must
use:
•
•
• shielded with drain
•
•
chiller module.
The communication cable must be
section of the control box where the
controller is located and should not
DC wiring either inside or outside of
Pour l’installation sur place du
l’installateur doit utiliser:
•
• Paire à simple torsion
•
•
•
et sortir de la section basse tension
le contrôleur et ne peut pas circuler
à moins de 6 à 8 pouces de tout
ou à l’extérieur du compartiment des
machines.
*NOTES:
• If noise is a problem and you cannot move the wiring, use ferrite
clamp-on chokes on the cabling to improve signal quality.
•
Rev: May 5, 2023
18
www.climacoolcorp.com
Wiring Diagram-Voltage/Phase Monitor
®
This manual suits for next models
3
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