United CoolAir VertiCool CLASSIC Installation, Operation And Maintenance Manual Download Page 14

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Installation, Operation and Maintenance Manual

VertiCool Classic

Subject to change without notice.

20.10-IM (0617)

System Options

Humidifier

The optional steam humidifier that comes with the unit

functions on the electrode principle. As water fills the plastic

steam generator, it immerses metal electrodes then permits

electrical current flow through the water. This current flow

produces heat which then boils the water into steam� This

steam is then injected on the downstream side of the cooling

coil to provide humidification for the area being served by

the unit� Water is replenished through tubing and the 1/4”

flare located on the evaporator section structure. For further

information refer to the Humidifier Installation Instruction

which accompanies the unit�

INFORMATION

The humidifier should not be subjected

to freezing air conditions� If the unit will

be used for outside air applications an

externally mounted humidifier should be

used�

Auxiliary Coils (Hot Water or Steam)

A hot water coil or steam coil when used as heat will be

located in the return air stream between the filters and the

evaporator coil� These are typically installed at the factory�
Some units will include Jack Stands to support the auxiliary

coil / filter box. If the unit is shipped as a single package the

jack stands will be attached� Care should be taken when

moving the unit from the skid to the installation location so

as not to tear or loosen the jack stand where it is attached

to the cabinet�
If the evaporator section is shipped loose the auxiliary coil

section will be attached to the evaporator� The jack stands,

if required, will be placed inside the auxiliary coil section�

The mounting hard- ware will be attached to the jack stand

flange.
If an optional hot water valve is ordered, this will be shipped

loose for installation in the field.
Control wiring will need to be installed from the hot water

valve back to the unit control panel� Follow all National

Electrical Codes and Local Codes as required�
Any steam valves and other adjunct steam components are

to be field supplied and installed by others.

Control wiring will need to be installed from the steam valve

back to the unit control panel� Follow all National Electrical

Codes and Local Codes as required�
A pan is included under any hot water coil or steam coil� A

condensate trap will need to be installed for this drain pan� A

trap will need to be installed since this line is in a negative air

stream� Follow the same procedures for this line as for the

unit condensate drain line outlined on page 6�
Pipe the hot water coil or steam coil per industry accepted

practices�

Water Side Economizer (Free Cooling Coil)

A water side economizer coil will be located in the return air

stream between the filters and the evaporator coil. These

are typically installed at the factory�
Some units will include Jack Stands to support the water

side economizer / filter box. If the unit is shipped as a single

package the jack stands will be attached� Care should be

taken when moving the unit from the skid to the installation

location so as not to tear or loosen the jack stand where it is

attached to the cabinet�
If the evaporator section is shipped loose the water side

economizer section may or may not be attached to the

evaporator� The jack stands, if required, will be placed inside

the water side economizer section� The mounting hardware

will be attached to the jack stand flange.
If the unit is shipped as a single package, the water piping

from the unit to water side economizer coil will be factory

installed�
If the water side economizer is shipped as a separate section

or if the unit comes with the evaporator and water side

economizer as a section, the water piping will be shipped

loose for field attachment.

Air Side Economizer

The air side economizer option is installed on the rear of the

cabinet�
Some units will include Jack Stands to support the air side

economizer / filter box. If the unit is shipped as a single

package the jack stands will be attached� Care should be

taken when moving the unit from the skid to the installation

location so as not to tear or loosen the jack stand where it is

attached to the cabinet�
If the evaporator section is shipped loose the air side

economizer section may or may not be attached to the

Continued on next page

Summary of Contents for VertiCool CLASSIC

Page 1: ...VertiCool CLASSIC Single Package Vertical Unit SPVU Installation Operation and Maintenance Manual Effective June 2017 Air Cooled Water Cooled Chilled Water and Water Source Heat Pump ...

Page 2: ......

Page 3: ...15 Interconnecting Refrigerant Tubing 15 Condensate Pump 17 Controls 18 Thermostat 18 Microprocessor Controller 18 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 Wa...

Page 4: ...ult 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 ELECTRICAL HAZARD WARNING CAUTION INFORMATION This publication includes warnings cautions and information icons that point out safety related issues or conditions as well as other per...

Page 5: ...eeds to be sufficient to handle not only the combined unit height but also the refrigerant fitting clearance height Figure 1 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 floor mounted unit Unit is to be mounted on a solid floor or supported on a full 100 perimet...

Page 6: ...bove 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 mai...

Page 7: ...ould 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 It is also beneficial 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...

Page 8: ...sing 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 F...

Page 9: ...n 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 t...

Page 10: ... refrigerant flow Electrical ELECTRICAL HAZARD Only a qualified 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 Co...

Page 11: ...he 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 int...

Page 12: ...t 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 field The valves are to be mounted in the ...

Page 13: ...ulating valves or head pressure control valves field supplied balancing valves may be required INFORMATION Optional Head Pressure Control Valve s should be incorporated into the unit water circuit s if the cooling fluid will be less than 65 F Install and connect a fresh water strainer field supplied to the water inlet line Strainer should be readily accessible for periodic cleaning Shut off valves...

Page 14: ... to be field supplied and installed by others Control wiring will need to be installed from the steam valve back to the unit control panel Follow all National Electrical Codes and Local Codes as required A pan is included under any hot water coil or steam coil A condensate trap will need to be installed for this drain pan A trap will need to be installed since this line is in a negative air stream...

Page 15: ...nections 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 Interconnecting Refrigerant Tubing After the two system sections have been installed the field supplied interconnecting tubing can be run a Units 10 ton and smaller are provided as standard without the resealable fittings In this situation the section...

Page 16: ...ng valve and seal 6 Install the Schrader valve fittings into the tubing before brazing the couplings onto the ends of the tubing Use a 1 4 hole to mount the valve Clean and debur the tubing before doing any brazing to ensure that no chips or debris are left in the refrigerant circuit Remove the Schrader valve cap and core before doing any brazing 7 Leak check line sets with nitrogen at 500 psig Af...

Page 17: ...id Line Solenoid Valve Discharge Line 100 X Ext Hot Gas Bypass Line 50 X Liquid Line Net Down 50 X Suction Line 100 X X X Suction Line Ambient 100 F 50 X X Suction Line Down 50 X 12 Add the appropriate charge of R 410a Refrigerant using the Schrader valves to compensate for the additional interconnecting tubing as follows a For 3 8 liquid line add 0 6 oz per foot b For 1 2 liquid line add 1 2 oz p...

Page 18: ...nser coil The receiver is downstream of the valve The valve limits the flow of liquid refrigerant from the condenser while at the same time regulating the flow of discharge gas around the condenser to the receiver During periods of low ambient operation the receiver pressure falls until it approaches the setting of the control point of the valve typically 295 psig for R 410a The valve then throttl...

Page 19: ...e addressed Cleaning a water cooled condenser helps to improve the heat transfer rate reduce operational cost restore efficiency prolong heat exchanger life and reduce pressure drop pumping costs Deposits from water or water treatments such as scale lime rust or mud are removed Each installation is unique Therefore the fluid quality and operating conditions will dictate when the heat exchanger nee...

Page 20: ... before adding grease so as not to introduce dirt into the bearing Slowly rotate the shaft while pumping it in Pump the grease in slowly so as not to blow out the bearing seal When the grease starts to seep out of the bearing you have put in enough new lubricant Over lubricating can cause a bearing to fail from overheating or it can blow out the seal Both excessive or inadequate grease may cause p...

Page 21: ...e circular dot in the center of the sight glass If the color of this indicator is blue the refrigerant is okay When the indicator is pink or purple an abnormal condition exists servicing is required INFORMATION After installation and during equipment start up the sight glass may appear pink or purple This occurs during prolonged periods of non operation and should turn blue after several hours up ...

Page 22: ...vice cycles through a cool down period usually 2 3 minutes A compressor off cycle timer is included in the electrical circuit for this purpose The time delay also helps the refrigerant system pressures to equalize at the end of the run cycle This helps the compressor during the starting process in that it is not attempting to start against a high discharge pressure INFORMATION Verify that this tim...

Page 23: ...The following sequence is based on the unit being controlled by a suitable room thermostat If another control type is being utilized reference the instructions for that device a Lower thermostat set point to lowest level b Set System switch to OFF position c Set Fan switch to the AUTO position d Moving the Fan switch to the ON position should cause the evaporator blower motor to run Moving the Fan...

Page 24: ... temperatures entering the condenser 5 Resolve incoming voltage issue 6 Resolve alarm condition Note Compressor internal overload may require an extended period of time 1 hour or more to reset Compressor short cycles 1 Reduced air flow 2 Loss of refrigerant charge 3 Short cycling of conditioned air 4 Drain pan switch open 1 Check filters and coil for any blockages 2 Replace filters if dirty 3 Repa...

Page 25: ...cooling 4 Ensure thermal expansion valve bulb is tight on suction line 5 Confirm thermal expansion valve bulb is located properly on suction line 6 Replace thermal expansion valve 7 Replace filter drier 8 Check filters and coil for any blockages 9 Replace filters if dirty 10 Verify that blower is rotating in the proper direction 11 Confirm proper fluid flow quantity through condenser 12 Confirm ac...

Page 26: ...ompressor thermal overload open 1 Turn on and set controller for desired operation 2 Check wiring connections against schematic 3 Check all connections for tightness 4 Check wire continuity 5 Refer to controller troubleshooting 6 Reset high or low pressure switch 7 Compressor internal overload may require an extended period of time 1 hour or more to reset Condensate carry over 1 Air flow too high ...

Page 27: ... side of condenser and evaporator 9 Damages resulting from I freezing of condenser water or condensate II use of corrosive water III fouling or restriction of the air water circuit by foreign material or like causes 10 Damages resulting from operation with inadequate or interrupted supply of air or water 11 Damages resulting from use of components or accessories not approved by United CoolAir 12 T...

Page 28: ...ial or like causes 10 Damages resulting from operation with inadequate or interrupted supply of air or water 11 Damages resulting from use of components or accessories not approved by United CoolAir 12 This warranty does not apply to the installation plumbing and wiring not integral to the product 13 Damages resulting from improper application or sizing This warranty is in lieu of all other warran...

Page 29: ...oolAir 12 This warranty does not apply to the installation plumbing and wiring not integral to the product 13 Damages resulting from improper application or sizing of unit 14 In the event that the refrigerant type is changed as a result of a compressor failure and the same type of compressor is not available any subsequent refrigerant circuit component failures will not be covered under the Limite...

Page 30: ...cessories not approved by United CoolAir 12 This warranty does not apply to the installation plumbing and wiring not integral to the product 13 Damages resulting from improper application or sizing 14 Discharge air temperature control if not provided by the factory will void the compressor Limited Warranty 15 In the event that the refrigerant type is changed as a result of a compressor failure and...

Page 31: ...e flooded condenser option the scroll compressors will have crankcase heaters If the outdoor ambient is 70 F or lower let the compressors sit for approximately 24 hours before proceeding 12 Record the voltage at the unit terminals 13 If possible with the thermostat provided switch the evaporator blower to the RUN position Verify that the evaporator blower is activated 14 Verify that the evaporator...

Page 32: ...e pressures on each compressor circuit are within the proper limits i 290 550 Discharge ii 100 140 psig Suction b Compressor Amperage is below the RLA Amps listed on the unit data tag i The maximum compressor operating current amps at start up depends a lot on the system loading The lower the load the less the current The higher the load the higher the current c The blower motor FLA values should ...

Page 33: ...contact the Distributor Is the Circuit Protection the correct type and does it meet the unit data tag requirements Yes ____________ No ____________ If not correct describe what action s have been taken to correct Unit controller wiring verified Yes ____________ No ____________ C Terminal hooked up if necessary Yes ____________ No ____________ Unit leak checked OK Yes ____________ No ____________ I...

Page 34: ... F_________ F_________ F_________ F_________ Sub cooling _________ _________ Electrical Evap Motor Amps L1_____________ L2____________ L3_____________ Compressor 1 Amps L1_____________ L2____________ L3_____________ Compressor 2 Amps L1_____________ L2____________ L3_____________ Cond Motor Amps L1_____________ L2____________ L3_____________ Heating Mode Optional System Air Temperatures Return F _...

Page 35: ...it for approximately 24 hours before proceeding 12 Record the voltage at the unit terminals 13 If possible with the thermostat provided switch the evaporator blower to the RUN or ON position Verify that the evaporator blower is activated 14 Verify that the evaporator blower is rotating in the correct direction three phase units only Note If the evaporator blower motor runs backwards shut off all p...

Page 36: ...sponding to the liquid line pressure 32 Calculate and record the liquid sub cooling for each circuit by taking the difference between the liquid line temperature and the saturation temperature corresponding to the liquid line pressure 33 Record the Amps for the evaporator blower motor and each compressor If the system is single phase use L1 and L2 only a Make sure the pressures on each compressor ...

Page 37: ...tor Is the Circuit Protection the correct type and does it meet the unit data tag requirements Yes ____________ No ____________ If not correct describe what action s have been taken to correct Unit controller wiring verified Yes ____________ No ____________ C Terminal hooked up if necessary Yes ____________ No ____________ Unit leak checked OK Yes ____________ No ____________ If leak was located d...

Page 38: ...ressor 2 Suction Pressure Suction Line Temperature psi________ F_________ psi________ F_________ Saturation Temperature F_________ F_________ Suction Superheat _________ _________ Liquid Line Pressure psi________ psi________ Saturation Temperature Liquid Line Temperature F_________ F_________ F_________ F_________ Sub cooling _________ _________ Electrical Evap Motor Amps L1_____________ L2_______...

Page 39: ...te Condenser or Condensing Section Being Used R Remote Condenser Unit being used RC Remote Condensing Unit being used c 8 10 12 15 20 25 30 Nominal Cooling Capacity in Tons d G Common to all e 3 4 or 5 Indicates Voltage 3 208 230V 3 PH 4 460V 3 PH 5 575V 3 PH f AS A Quantity of Refrigerant Circuits AS Indicates 1 Circuit A Indicates 2 Circuits g T Traditional Series Classic h A Refrigerant Type A ...

Page 40: ... the compressor labor not included Maintenance items such as filters and belts are excluded under this limited warranty FACTORY TESTED All units are functionally run tested before shipment to ensure a trouble free start up and unit commissioning Industry proven components are used throughout to enhance system reliability and peace of mind VertiCool Classic Vertical 3 30 Ton VertiCool Aurora Vertic...

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