United CoolAir VertiCool CLASSIC Installation, Operation And Maintenance Manual

™

VertiCool

Single Package Vertical Unit (SPVU)

CLASSIC

Installation, Operation and Maintenance Manual

Effective June 2017

Chilled Water and Water Source Heat Pump

Air-Cooled, Water-Cooled,

Contents

Installation, Operation and Maintenance Manual

VertiCool Classic

Important Notice ��4

Use of Symbols ��4

General Information ��5

Inspection Of Equipment ��5

Handling ��5

Mounting And Setting In Place ��5

Unit Vibration Isolation ��6

Location ��6

Clearance ��6

Louver And Ducting ��6

Length of Ductwork for Discharge Air ��7

Application Data ��8

Installation ��8

Air-Cooled Single Package ��8

General Ductwork Recommendations ��9

Plenum Installation ��9

Condensate Drain Connection ��9

Refrigerant Connections ��9

Electrical ��10

Transformer ��11

Wiring ��11

Three Phase Power �� 11

Electric Heat ��11

Voltage Unbalance ��12

Chilled Water Coil Valves Or

Hot Water Coil Valves ��12

Pressure Switches ��12

High Pressure / Low Pressure ��12

Water-Cooled Units ��12

Water Piping and Connections ��13

Chilled Water Sections ��13

System Options ��14

Humidier ��14

Auxiliary Coils (Hot Water or Steam) ��14

Water Side Economizer (Free Cooling Coil) ��14

Air Side Economizer ��14

Split Systems ��15

Evaporator Mounting ��15

Interconnecting Refrigerant Tubing ��15

Condensate Pump ��17

Controls ��18

Thermostat ��18

Microprocessor Controller ��18

Subject to change without notice. 20.10-IM (0617)

Flooded Condenser ��18

Maintenance Procedures��19

Filters ��19

Cleaning The Water-Cooled Condenser��19

Blowers ��19

Blower Motors��19

Blower Speed Adjustment ��20

Blower Bearing Lubrication��20

Belts��20

Refrigerant Systems ��21

Evaporator And Air-Cooled Condenser Coils ��21

Finned Coil Cleaning ��21

Water Side Economizer Coil ��22

Water Valves ��22

Hard Start Kit ��22

Checking Hot Gas Bypass Valve ��22

Adjustment Of Hot Gas Bypass Valve ��22

Sequence Of Operation Cooling - - Air-Cooled ��23

Cooling - - Water-Cooled ��23

Cooling - - Chilled Water ��23

Heating (Other Than Heat Pump) ��23

Heating (Heat Pump, Water Source) ��23

Troubleshooting Guide ��24

Limited Warranty ��27–30

Air-Cooled Unit ��31

Start-Up Procedures (R-410a Systems) ��31

Optional Heating Start Up: ��32

Air-Cooled Unit ��33

Start-Up Procedures ��33

Cooling Mode ��34

Electrical ��34

Heating Mode (Optional) ��34

Water-Cooled Unit ��35

Start-Up Procedures (R-410a Systems) ��35

Optional Heating Start Up: ��36

Water-Cooled Unit ��37

Start-Up Procedures ��37

Cooling Mode ��38

Electrical ��38

Heating Mode (Optional) ��38

Verticool Classic Basic Model Designation��39

LIMITED WARRANTY ��40

FACTORY TESTED ��40

Installation, Operation and Maintenance Manual

VertiCool Classic

Important Notice

This manual is the property of the owner.

Please be sure to leave it with the owner when you leave the job.

Use of Symbols

This publication includes warnings, cautions and information icons that point out safety related issues or conditions as well as other pertinent information relative to a safe installation, service or maintenance situation� The following icons should be interpreted as follows:

ELECTRICAL HAZARD

WARNING

CAUTION

INFORMATION

The electrical hazard icon indicates the presence of an electrical hazard which could result in electrical shock or death�

The warning icon indicates a potentially hazardous situation which could result in death or serious bodily injury if not avoided�

The caution icon indicates a potentially hazardous situation which may result in minor or moderate injury if not avoided�

The information icon indicates a situation that may result in equipment or property damage� The information provided alerts the reader to relevant facts and/or conditions�

Subject to change without notice. 20.10-IM (0617)

Installation, Operation and Maintenance Manual

General Information

VertiCool Classic

Inspection Of Equipment

Upon receipt of the unit, inspect for visible or concealed interior / exterior damage� Report any damage to the carrier,

and le a damage claim.

Inspect the unit data plate to verify the model unit that was ordered is what has been received�

Some options / accessory items may have been shipped loose in one or more boxes� These may have been delivered to another location, or possibly within the unit� If shipped with

the unit there will be a sticker that identies where in the unit the shipped loose items are located. Conrm that all of

these options / accessory items are also available and that no damage has occurred�

Handling

To facilitate handling, the unit is set on a wooden skid so that it may be picked up with a two-wheel hand truck or fork lift� Under no circumstances should the unit or the skid be “walked” on the corners� Use dolly trucks, pipe rollers or suitable means to move the unit to its proper location�

If a crane, cables or slings are used to move a unit or module, spreader bars must be used to protect each section’s cabinet structure� Some units or modules will be provided with either lifting eyelets or brackets that should be used to lift the sections�

When vertical style units are shipped split, or will be split in

the eld and then reassembled in the space, the condensing

section has refrigerant lines that extend above the top of the cabinet�

When the unit is assembled these ttings are recessed into the evaporator section . These ttings extend approximately

5” for all models (Figure 1)�

The space height needs to be sufcient to handle not only the combined unit height, but also the refrigerant tting

clearance height�

Mounting And Setting In Place

CAUTION

Unit should not be located in space subject to freezing temperatures�

The VertiCool Classic has been designed to be installed as

a single package oor mounted unit.

Unit is to be mounted on a solid oor or supported on a full 100% perimeter frame. Attention must be given to oor

loading limitations� Floor should be level in both horizontal planes�

Before the unit is installed, a thorough study should be made of the structure and proposed installation location� Careful consideration must be given to location of wiring, condensate disposal, ductwork and accessibility for maintenance or service� It is necessary that a minimum clearance of 36” be allowed on the front of the cabinet� Some air path

congurations will also require side access to the evaporator section. Sufcient clearance must be provided to slide the air lter(s) out, either the left or right side.

Consideration must be made for condensate removal, either with a trap or condensate pump�

The units might be shipped as a single package or they might be shipped split� Units that have been ordered with

the optional resealable refrigerant ttings can be split in the eld to accommodate moving into position. Sections are

also bolted together�

When re-assembling the evaporator section to the condensing section, use a sling or other suitable means that

is sufcient to hold the weight of the section. Use spreader

bars to keep the cabinet from being deformed�

Make sure that the evaporator section is positioned correctly for the desired air pattern� Care must be taken when lowering

the evaporator section that the refrigerant resealable ttings

are lined up properly and that they are not damaged in this process� Re-install the fasteners if removed prior�

Figure 1

Subject to change without notice. 20.10-IM (0617)

Installation, Operation and Maintenance Manual

VertiCool Classic

Unit Vibration Isolation

When installing any oor mounted unit, it is generally not

necessary to provide any unit vibration isolation� However, some form of vibration isolation may be requested� Please note that the unit frames have not been designed for corner point only loading with vibration isolation methods�

1. If spring mounts are to be used, fabricate a frame to provide support around the entire perimeter of the unit�

Allow sufcient clearance for any door or panel access that is required to provide eld service or maintenance

on the unit� The frame will also need to be designed with suitable cross bracing� (Figure 2)

2. If wafe pad or other similar sound vibration materials

are going to be used, the material needs to be placed under the entirety of the unit base�

Figure 2

Location

Strategically located intake and discharge louvers help to prevent recirculation of discharge and contaminated air

into the intake air stream. Airow around a building and

prevailing wind direction can adversely affect the potential for recirculation and should be factored into louver placement�

In some areas, local codes dictate louver location� Maximize the distance of intake louvers from any exhaust outlet and other contaminants, people, property lines, etc� Avoid placing intakes near idling vehicles�

The bottom of the intake louver should be raised a minimum of 12" from a horizontal surface (roof, sidewalk, etc�) to prevent blockage from debris� If snow accumulations are expected to be greater than 12", raise the bottom of the louver above the average snowfall depth�

If more than one VertiCool unit will be installed in the same area, then the minimum separation of one unit adjacent to another should be 6 feet� A 10 foot separation distance should be maintained where two units are installed one

above the other� It is best to direct discharge air up and away from pedestrian walkways as well�

We do not recommend multiple installations between closely situated buildings where discharge air could collect and be directed back to the intake� Again, recirculation will cause the unit to trip on high head pressure�

Clearance

Clearance of 36" is required on the front side of all units for service and maintenance access�

If a unit has front return, 30" clearance on each side of the unit must be provided for access to the motor and / or refrigerant circuit components, such as the thermostatic expansion valve(s)�

Filters can be accessed from either side of the unit. Sufcient

space must be provided for removal and replacement of all

lters. This can be from one side only or from both sides.

Louver And Ducting

Carefully choosing the right condensing section intake/ exhaust louver(s) and determining the best location for them are critical components to a successful VertiCool installation�

and/or discharge unit openings to allow for optimum velocity and reasonable pressure drop across the louver�

1. Select a louver design that will safely separate the discharge from the intake air stream to ensure that air recirculation will not occur�

2. The intake louver should be designed to minimize and virtually eliminate water penetration at a reasonable face area velocity (fpm)�

3. The discharge duct must be as short and straight as

possible but of sufcient length to guarantee uniform airow distribution through the louver for maximum

velocity�

4. In most cases, the cross-sectional “free area” of the louver must be equal to or larger than the crosssectional areas of the intake and/or discharge unit openings to allow for optimum velocity and reasonable pressure drop across the louver�

5. Ducts should be insulated if the unit is installed and operating in cold climates�

6. Adequate access to both the evaporator and condenser coils as well as the louver must be available for cleaning purposes�

7. All louver manufacturer instructions, local codes, and industry accepted guidelines must be followed for all installations�

Subject to change without notice. 20.10-IM (0617)

Installation, Operation and Maintenance Manual

VertiCool Classic

INFORMATION

Discharge air from the condenser air

outlet should be deected away from the

condenser air inlet, to prevent recirculation�

The intake and discharge louver can be in separate frames or combined in one frame�

The combination intake/discharge louver design (Figure 3) offers an advantage over separate louvers because it requires only one wall opening which decreases installation costs�

However, the blades cannot be of uniform conguration (i.e.

the same blade design and angle)� The discharge louver

blades should be angled to direct the airow straight out

horizontally from the unit and the intake blades should be angled down at approximately 45°�

Combination Intake/Discharge

“D”

“D” Discharge“I” Intake

“I”

It is also benecial to angle the bottom of the intake ductwork

up from the louver toward the unit opening to minimize the possibility of water carryover reaching the unit and allow for proper drainage Figure 4)�

Figure 4

Discharge Louver

Access panel for condenser coil cleaning�

Inlet Louver

Louvers should be inspected and cleaned on a regular basis� A bird screen is required to deter animals and debris from entering the duct system�

3" Separation Plate

[101�5 mm]

Figure 3

It is critical that the two air streams be directed in different directions so that no recirculation of discharge air is allowed to enter the inlet air stream� In some cases it may be necessary

to provide a deector vane or separator between the two air

streams� If recirculation of the discharge air does occur, the unit will likely trip on high head pressure and continue to fail until the louver design is corrected�

Louvers may be manufactured of aluminum (14 gauge) or steel (18 gauge)� Louver widths of 30 inches or more should have additional bracing midway along the blades to maintain proper blade separation� If the louvers are to be installed in a coastal application or any location with environmental concerns, then the louvers should be treated�

Length of Ductwork for Discharge Air

The VertiCool Classic unit should be located a minimum

distance from the louvered wall to maximize efciency of the

blower� Certain conditions and obstructions at the fan inlet and outlet adversely affect fan performance (i�e� elbows, guards, dampers, etc�)� “System Effect” is a term used by the industry to describe these adverse conditions� It is best to design the inlet and discharge ductwork to provide minimum

sufcient straight length of duct to reduce system effect and

allow for uniform air discharge�

Figure 5 below illustrates the discharge air velocity prole at

various distances from the centrifugal blower� It is important to determine the 100% Effective Duct Length to ensure uniform air discharge�

Subject to change without notice. 20.10-IM (0617)

Installation, Operation and Maintenance Manual

VertiCool Classic

Based on formulas in ASHRAE Fundamentals – Duct Design, Chapter 34, the following minimum intake and discharge 100% Effective Duct Lengths (EDL) are recommended:

3 thru 5 tons = 3�5 feet 6 & 8 tons = 4 feet 10 thru 15 tons = 5�5 feet

Outlet Area

Blast Area

Cutoff

100% Effective Duct Length

20 tons = 6�5 feet 25 tons = 8 feet 30 & 35 tons = 8�5 feet

25%

50%

75%

Discharge Duct

Figure 5

The VertiCool units are supplied with a standard motor and drive package which provides approximately 0�25” ESP� Upgrades (optional) are available that can raise this capability to 1” ESP or more� The drive packages have some

ability to be adjusted in the eld. You must know the overall

duct design in order to determine what drive package will be required� Normal start-up procedures should be followed including balancing the system following the completed unit installation�

Application Data

Voltage 208 / 230 460 575

Variation 187 / 253 414 / 504 518 / 632

Cooling

(Air Entering Evaporator)

Water-Cooled

(min./max.)

GPM / Ton

(min./max.)

Leaving Water

(min./max.)

65 / 110

57 / 72

2.5 / 3.5

60 / 115

Installation

The VertiCool Classic units can be shipped as a single package or as a split package which is assembled in the

eld.

Air-Cooled Single Package

1. Move the unit to the desired installation location�

2. Unit contains a full charge of R-410a refrigerant�

3. Install the unit so that controls and access panels are

accessible to the operator and maintenance personnel�

4. Install the condensing section ductwork following the guidelines and industry accepted practices for the condenser air inlet and discharge�

5. Install ductwork on the evaporator as required� If the unit was provided with a discharge plenum having grilles, no ductwork would be required�

6. Install the condensate trap as outlined below�

7. Wire the unit as outlined below�

Air-Cooled Units Shipped Split or Split In The Field For Unit Locating

1. Move the unit to the desired installation location�

2. Unit contains a full charge of R-410a refrigerant�

3. Install the unit so that controls and access panels are

accessible to the operator and maintenance personnel�

4. Install the condensing section ductwork following the guidelines and industry accepted practices for the condenser air inlet and discharge�

5. When re-assembling the evaporator section to the condensing section, use a sling or other suitable means

that is sufcient to hold the weight of the section.

Use spreader bars to keep the cabinet from being deformed�

6. Make sure that the evaporator section is positioned correctly for the desired air pattern� Care must be taken when lowering the evaporator section that the

refrigerant resealable ttings are lined up properly and

that they are not damaged in this process� Re-install the fasteners if removed prior� Systems shipped split from the factory will have the mounting hardware located inside the evaporator section�

7. Install ductwork on the evaporator as required� If the unit was provided with a discharge plenum having grilles, no ductwork would be required�

8. Install the condensate trap as outlined below�

9. Wire the unit as outlined below�

Note: Not all combinations may be valid.

Subject to change without notice. 20.10-IM (0617)

Installation, Operation and Maintenance Manual

VertiCool Classic

General Ductwork Recommendations

1. Please make sure that all duct work, evaporator return

and supply air and for air-cooled units the condensing section inlet and discharge air, is connected to the units

using eld supplied exible duct connectors.

2. Make sure that all duct work is supported independently from the equipment�

These two installation requirements are meant to minimize or isolate any unit vibration to help assure that it is not transmitted into the duct work, to the structure and/or out into the space�

All ductwork must be designed in accordance with industry accepted practices� Consult ASHRAE, AMCA or SMACNA guidelines or standards for details� Use of turning vanes is recommended�

Verify that the designed duct external static pressure is in line with the capability of the unit blower / motor provided�

Ducts should be insulated in accordance with applicable industry standards or per local codes, particularly if the unit will be operated during cold weather� The condensing unit intake duct should include a provision to access the inlet side of the coil for periodic cleaning� It is also best to design

for sufcient clearances for servicing the blower motors, expansion valves, lters, and any additional accessories

installed�

This negative pressure can vary from less than 1” up to 2”

column. The condensate trap must be of sufcient depth in water column to permit the condensate to ow from the drain

pan�

The “A” dimension (Figure 6) must equal or exceed the negative static pressure developed by the supply air blower� If it does not, the condensate will not drain properly and

may overow the drain pan. The trap must be at least 2-1/2”

deep to maintain a water seal under all operating conditions, especially during blower start-up�

It is highly recommended that the trap be primed with water prior to unit start-up�

Each trap must be piped to a suitable waste drain�

Unit

“A”

2-1/2"

Figure 6

Plenum Installation

The plenum is typically installed at the factory� However, it may need to be removed to move the unit into position� The plenum is held in position with drive screws�

If the plenum has discharge grilles, the grilles will have to be removed to take the plenum off for re-installation on the evaporator section�

Condensate Drain Connection

Install a eld fabricated condensate trap and drain line or

a condensate pump as required� Route the condensate disposal tubing to a suitable location�

Units are equipped with two 3/4” IPS evaporator drain connections� It is only necessary that one drain connection be utilized� Make sure that the drain connection not being used is plugged�

The drain line must be trapped because the coils are located on the negative side of the blower(s)� The purpose of the condensate trap is to neutralize the negative pressure created within the cabinet by the blower�

Subject to change without notice. 20.10-IM (0617)

Refrigerant Connections

All units are shipped from the factory with a full factory

refrigerant charge. The resealable refrigerant ttings must

be connected and properly tightened to facilitate refrigerant

ow between the evaporator and compressor / condenser

section�

If the unit has been shipped split or has been split to

accomplish installation, the resealable refrigerant ttings

must be connected as follows:

1. On the refrigerant resealable ttings, if not already

accomplished, apply a few drops (5 to 6 droplets are recommended) of refrigerant oil to the male coupling halves before starting the assembly (Ref� to Figure 7)�

2. Align each resealable tting and hand thread the female tting onto the male tting (Ref. to Figure 7).

Continue to hand thread until resistance is observed�

Continued on next page

Installation, Operation and Maintenance Manual

VertiCool Classic

3. Once slight resistance is evident, continue to tighten

the ttings using the appropriate size wrenches listed in

Table 1� Please note that it is important to support the

male side of the tting with a wrench when tightening

the female side with a wrench�

4. If the resealable ttings still feel loose, tighten a bit

more as required�

Figure 7

Clockwise Rotation

Female Fitting

Apply oil to male threads Male Fitting

INFORMATION

Count the number of threaded rotations� Use Table 1 to determine how many total rotations are required for proper sealing of

the ttings.

Size Wrench Full Turns Required

3/8" 1-3/16" 6 1/2" 1-3/16" 6 5/8" 1-5/8" 7-3/4 3/4" 1-5/8" 7-3/4 7/8" 1-5/8" 8

1-1/8" 2" 8

Electrical

ELECTRICAL HAZARD

Only a qualied licensed electrician or

other individual that is properly trained in handling live electrical components should perform the wiring installation� Failure to follow all electrical safety precautions and industry accepted practices when exposed to live electrical components could result in death or serious injury�

INFORMATION

Use Copper Conductors Only� Failure to use copper conductors may result in equipment damage�

INFORMATION

All electrical wiring must be in accordance with NEC (National Electrical Code), NFPA (National Fire Protection Agency) most current versions as well as any applicable state or local codes�

INFORMATION

The correct phase sequence of the incoming power supply is a requirement� If the phase sequence is not correct it could cause damage or failure to electrical components� Reverse the incoming wiring to resolve the issue� Do not switch any internal unit wiring�

INFORMATION

If low refrigerant pressure is evident during the start-up process, check the tightness

of all resealable ttings. A tting that is not fully open will restrict refrigerant ow.

Subject to change without notice. 20.10-IM (0617)

Conrm that the incoming power supply

matches the unit data tag�

Installation, Operation and Maintenance Manual

VertiCool Classic

INFORMATION

Unit wiring and components have been

designed for the specic unit application

and factory assigned controls� Do not use the unit transformers or alter the unit wiring

to interface any eld supplied accessories

or controls�

A factory provided power block is installed internal to the unit’s electrical control panel� Route the main power wires in accordance with all codes from the disconnect to the unit power block�

A proper ground termination lug has been provided in the unit control panel�

ELECTRICAL HAZARD

Conduit is not an acceptable grounding source� A separate ground conductor must be connected from Earth Ground to the factory supplied grounding lug internal to the unit�

Transformer

Dual voltage units, 208/230, are wired from the factory for the 208 volt power supply� If the power supply will be consistently above 220 volts the transformer should be wired on the 230 volt tap�

Wiring

1. Refer to the wiring diagram that was included with the

unit�

2. Units are completely internally wired at the factory�

3. All units are provided with terminal blocks�

4. Check the unit data tag for the required voltage,

minimum circuit ampacity and maximum fuse size�

5. Route the power wiring through one of the holes provided in the front corner posts�

6. Power wiring must comply with all National or Local codes� The power supply must be suitably fused for wire protection�

7. Use copper conductors only� The unit must be earth grounded using the ground lug provided in the electrical box�

8. Select a location to install the thermostat to avoid vibration, drafts, sun exposure or internal heat sources� Use an inside wall�

9. Route the correct low voltage wire type and size back to the unit and through one of the holes provided in the front corner posts� Connect to the low voltage terminal block per the wiring diagram supplied�

Wire Size1 AWG. Gauge

22 20 19 18 16

40 120 150 190 305

Maximum Wire Length2 Feet

Notes:

1. Soilid, Class II copper wire

2. Based on a voltage drop of 1�2 volts per wire�

3. Total wire length is from unit to room thermostat, and

back to unit�

Three Phase Power

On units with three phase power supply, check for proper blower rotation� If they are running backwards, interchange two of the incoming power leads�

Do not rewire any components inside the unit�

Electric Heat

On larger units having a high amount of electric heat, a second power supply may be required� Run the second power supply to the connections located with the heater� Follow all National Electrical Codes and Local Codes as required� Make sure to run a ground wire to the supplied lug�

Route the low voltage wiring for the heater control to the low voltage terminal block located with the heater�

Subject to change without notice. 20.10-IM (0617)

Installation, Operation and Maintenance Manual

VertiCool Classic

Voltage Unbalance

Voltage unbalance occurs when the RMS line voltages on a 3-phase power supply are unequal� Voltages are never balanced between phases, but if the level of the unbalance becomes excessive it will create problems for not only motors but also controls�

The maximum desirable voltage unbalance is 2�0%�

When testing for voltage unbalance, the phase-to-phase voltages should be measured rather than the phase-toneutral voltages since 3-phase motors are connected across phases� Use the following formula to determine the percent of voltage unbalance:

Percent Voltage Unbalance = 100 x (Maximum Voltage Deviation / Average Voltage)

Example:

Phase-Phase voltages

A-B = 479V

B-C = 472V

C-A = 450V

Average Voltage = (479 + 472 + 450) / 3 = 467

Maximum Voltage Deviation from Average =

467 - 450 = 17 (Must always be positive)

Voltage Unbalance = 100 x (17/467) = 3�6%

In this example the percent of voltage unbalance exceeds the desired maximum of 2%� Additional checks should be made

at the unit disconnect to conrm the values. Use accepted

industry practices to check or test the quality of the power supply� Often, it is just a matter of repairing malfunctioning equipment or redistributing loads to improve the unbalance�

If no cause can be located and resolved for the unit power

supply, the building manager or owner should be notied of

the issue to get the proper power supplied to the unit�

It should be noted that the inclusion of a variable frequency drive (VFD) with an unbalanced power supply may result in nuisance tripping and 3rd harmonic currents�

Chilled Water Coil Valves Or Hot Water Coil Valves

Chilled water or hot water valves, if supplied by United CoolAir, are typically 2-way� The optional valves are shipped

loose for installation in the eld. The valves are to be mounted

in the outlet line of the coil�

Pressure Switches

High Pressure

This switch shuts the unit down in the event of excessive high pressure in the discharge line� A manual reset is required at the high pressure switch�

Low Pressure

This switch shuts the unit down in the event of low pressure in the suction line� This switch is auto-reset�

Water-Cooled Units

INFORMATION

Do not reduce the water inlet or outlet connection size as this will restrict water

ow and increase water pressure drop.

CAUTION

Ensure that the water pressure to the unit does not exceed any valve rating�

INFORMATION

All eld installed piping must conform to

applicable local, state and federal laws�

The following items are to be eld supplied and applied:

A. Water shut-off valves (Gate or Ball Type)

B. Inlet water strainer with isolation shut off valves on

each side for periodic cleaning�

The standard condenser heat exchangers are co-axial type� These are tube-in-tube type that are chemically cleanable� The inner tube carries the water and the outer tube the refrigerant� When designing and installing the water piping, some consideration for the chemical cleaning should be made, if desired, for future maintenance�

CAUTION

The condensate drain line should not be connected to the condenser outlet, as

ooding will occur.

Subject to change without notice. 20.10-IM (0617)

+ 28 hidden pages

United CoolAir VertiCool CLASSIC Installation, Operation And Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual