Celina Wisperkool 20 Ton Manual

1
20 TON
480V
Portable Vertical
Air-Conditioning and
Heating Systems
Installation and Service Manual for 20 Ton Units—480V
Celina.com

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20 TON
480V
Table of Contents
Introduction ...............................................................3
Warnings........................................................................4
General Information..........................................5
Electrical Information .....................................7
Start-Up Guidelines........................................ 10
Tent Installation .................................................. 11
Fork Lift Pockets ............................................... 12
Maintenance Guidelines............................ 13

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20 TON
480V
Introduction
This manual addresses the 20 ton wisperkool™ HVAC unit for temporary cooling and
heating solutions. This manual includes technical information, start-up information,
and unit maintenance. The information contained in this manual is provided to ensure
the safe installation and operation of the equipment. It is for reference only.
PLEASE READ ALL WARNINGS AND INSTRUCTIONS
CAREFULLY BEFORE AND DURING SET UP AND MAINTENANCE.

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20 TON
480V
Warnings and
Safety Protocols
Live Electrical Components
During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with
live electrical components. A qualified licensed electrician or other individual who has been properly
trained in handling live electrical components must perform these tasks. Failure to follow all electrical
safety precautions when exposed to live electrical components could result in serious injury or death.
Heavy Objects
Use a forklift of suitable capacity to move the unit. Failure to properly lift unit could result in death or serious
injury or possible equipment or property damage
State and Local Codes
Failure to follow state and local codes could result in death or serious injury. All vertical HVAC units should
be installed per the National Electric Code (NEC) and/or applicable state and local codes.
Voltage Rating
External Power must match voltage rating 480/3/60. Do not exceed amp rating.
Tent Clamp Bolts
DO NOT OVER-TORQUE THE TENT CLAMP BOLTS. This could permanently damage the tent clamps
rendering them ineffective. Clamps would need to be replaced. The warranty would not cover this.
Voltage
Disconnect all electrical power before servicing. Follow proper procedures to ensure that the power
cannot be inadvertently turned on. Failure to disconnect power before servicing can result in serious
injury or death.
The 20 ton wisperkool™ unit is UL approved.

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20 TON
480V
General Information
Vertical air conditioning units can be used in free blow or ducted applications. A separate set
of supply and return duct adapters can be installed by removing the supply and return panels.
Each unit includes a clamp on the top and each side for installation in the wall of a tent or a
special event application.
Accessories such as flexible duct, electrical cable, supply and return air duct adapters and
condenser discharge duct adapters are available upon request.

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20 TON
480V
Cooling Capacity (MHB)
Entering Air Temp Temperature F (air over condenser)
DB WB 95ºF
Total Sensible
95 79 200 120
Note: Capacities are gross values and are not adjusted for motor heat.
Electric Heat Air Temperature Rise
Heater kW Total MBH Temperature Rise (F)
45 153.5 17.7
Note: Air temperature rise = (kW x 3413) (scfm x 1.085)
Weights and Dimensions
Model Length Width Height Weight
20 Ton 81" 44" 82" 2544
Fork Pocket Dimensions 8" 3"
Note: Add 17 inches to the unit width and 50 lbs. to the unit weight for condenser discharge duct connections.
General Unit Information
Refrigerant Type 410A
Charge 14 lbs.
Compressor Type Scroll
Quantity 2
Nominal Tons 10
Hot Gas Bypass Ye s
Evaporator Airflow Orientation Horizontal
Nominal Airflow 6,250 cfm
Max Static Discharge Pressure 1.2 high/0.81 low
Supply Air Connections Type Grille or Duct
Quantity 3
Size 20 in.
Return Air Connections Type Grille or Duct
Quantity 3
Size 20 in.
Evaporator Coil Rows 4
Face Area 12.5 sq. ft.
FPI 10
Condenser Coil Rows 4
Face Area 21 sq. ft.
FPI 14
Filter Type Washable
Quantity 3
Dimensions 24 in. x 24 in. x 2 in.

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20 TON
480V
Electrical Information
All 20 ton wisperkool™ air conditioning units are
480V, 3-phase, 60 Hz.
Each unit has eight color coded cam-type electrical connections. When connecting one unit
to a power source the male cam-type connections on the top should be used. The bottom
row female cam-type connections are only to be used when connecting multiple units to one
power source and allows connecting several units in series. Either 2/0 or 4/0 electrical cable
should be used. When connecting multiple units in series do not exceed amp rating of cable
used. Exceeding amp ratings could cause permanent damage to the electrical cables.
EXTERNAL POWER MUST MATCH VOLTAGE RATING 480/3/60
DO NOT EXCEED AMP RATING
Circuit Breaker Ye s
Maximum Over-current Protection
(MCA) – cooling with heat
75 amps
Compressor 33 amps
Compressor RLA 15 amps
Evaporator Blower Motor 5 hp
Evaporator Blower FLA 6.3 amps
Condenser Blower Motor 2 hp
Condenser Blower RLA (each-2) 3.4 amps
Heater kW (total) 45
Heater Amperage (total) 60
Heater kW each stage 22.5 kW
Heater Stages 2

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20 TON
480V
Electrical Information CONTINUED
1st Stage
Heat Breaker
2nd Stage
Heat Breaker
1st Stage
Cool Breaker
2nd Stage
Cool Breaker
Heat and Cool Breakers
Condenser
Motors
Breaker
VFD
Breaker

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20 TON
480V
Panel Locations

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20 TON
480V
Start-Up Guidelines
Data Nab Controller
1. Once the power cables are attached turn the black power handle to the ON position.
2. The unit is preset to run on high cool at 72 degrees.
3. If the phase light is red, turn off the power and switch the positions of the first two
power cords.
4. To lower the fan speed switch the fan control knob to LOW.
5. To manually raise or lower the temperature push the
^
or
^
symbols to get the
desired temperature.
6. To switch the unit to heat press the
>
symbol on the right until you see the
HVAC MODE appear.
7. Push the
^
or
^
arrow until the set point appears.
8. The heat is preset at 72 degrees.
9. To manually raise or lower the temperature push the
^
or
^
symbols to get the
desired temperature.
10. To stop the unit turn the black power handle to the OFF position.
11. The wisperkool™ unit will restart at the same setting that was in place when shut down.

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20 TON
480V
DO NOT OVER-TORQUE THE TENT CLAMP BOLTS.
THIS COULD PERMANENTLY DAMAGE THE TENT CLAMPS!
Tent Side Wall Installation
• Confirm that unit is properly leveled.
• Loosen tent clamps on top and sides of unit.
• Carefully slide the sidewall fabric under the tent clamps on each
side and top of the unit.
• Tighten down the tent clamps using a ¾-inch wrench or socket.

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20 TON
480V
Fork Lift Pockets
Use a forklift of suitable capacity to move the unit. Failure to properly lift unit could result in
death or serious injury or possible equipment or property damage.
WARNING!
HEAVY OBJECTS!

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20 TON
480V
Maintenance Guidelines
The motor and blower bearings are permanently lubricated and should not require
maintenance. The evaporator fans are belt driven. The drive belts should be routinely
examined for wear and correct tension. An incorrectly tensioned belt can cause bearing or
wear damage.
The belts can be tensioned by loosening the 4 bolts holding the motor to the motor mount.
Once the motor mount bolts are loose, adjust the belts by tightening or loosening the two
¾-in. adjusting bolts on the bottom of the motor mount bracket. Re-tighten the 4 bolts
holding the motor to the motor mount.
A properly tensioned belt has approximately 1 in. to 1½ in. movement when both legs of the
belt are pressed in midway between the pulley and the sheave.
Each unit is provided with replaceable filters that are installed in the evaporator return air
section. The return air grill must be removed to gain access to the filters. Check filters
periodically to verify that the filters are clean. Dirty filters will severely reduce the
performance of the machine.
HAZARDOUS VOLTAGE!
DISCONNECT ALL ELECTRICAL POWER BEFORE SERVICING.
Follow proper procedures to ensure that the power cannot be inadvertently turned on.
Failure to disconnect power before servicing can result in serious injury or death.