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Compact CWE

Installation, Operation and Maintenance Manual
Perimeter Mounted Precision Air Conditioners

30 kW - 360 kW / 60 Hz

Содержание Compact CWE

Страница 1: ...Compact CWE Installation Operation and Maintenance Manual Perimeter Mounted Precision Air Conditioners 30 kW 360 kW 60 Hz...

Страница 2: ...CW E UF 0 Number of Refrigeration Circuits Model Nomenclature E EC Fan Electronically Commutated EC Fan Highly reliable EC Fans offer considerable energy cost savings and long life Using an electronic...

Страница 3: ...re Humidity Sensor 2 7 2 6 6 1 Types of Control 2 7 2 6 7 Remote Water Detector 2 8 2 7 Piping Connections 2 9 2 7 1 Chilled Water Hot Water 2 9 TABLE OF CONTENTS 2 7 2 Condensate Drain 2 9 2 7 2 1 Gr...

Страница 4: ...Checklist A 2 Appendix B Glossary Definition of Terms and Acronyms B 1 Notice This document contains information protected by copyright All rights are reserved The owner of the equipment for which th...

Страница 5: ...nt of cooling required The controller modulates the valve opening together with the fan speed to meet the user selectable temperature setpoint Heat from the surrounding air is transferred through the...

Страница 6: ...ective for a period of 24 months from the date of start up Parts repaired or replaced under this warranty are shipped FOB factory ground and warranted for the balance of the original warranty period o...

Страница 7: ...y placards stickers have been placed on the unit to call attention to all personal and equipment damage hazard areas Never work on electrical equipment unless another person who is familiar with the o...

Страница 8: ...ons should be disposed of in accordance with local and state regulatory statutes CAUTION Chilled water cooling coils and associated piping circuits are pressurized up to 100 psi and sealed when they l...

Страница 9: ...ncluded to further describe the feature s Figure 1 depicts a sample internal layout of a CCU upflow unit and identifies the major components Location of the major components vary depending on CWE mode...

Страница 10: ...a 0 to 10 VDC signal from the system controller The fan motor is equipped with integral electronics and does not require the addition of secondary electronics such as thermal protection inverters or...

Страница 11: ...ontroller provides an alarm signal and the alarm display indicates which power source failed When the primary power source is functionally restored the operation of the A C system is automatically tra...

Страница 12: ...se such as controllers temperature humidity sensors water detectors etc are shipped inside the air conditioner unless specified otherwise by the customer The plenum box if applicable is shipped separa...

Страница 13: ...stallation draw ing The unit is shipped on a skid to facilitate moving prior to installation The unit should always be stored indoors in a dry location prior to installation CAUTION When moving the un...

Страница 14: ...ducted or through a 2 or 3 way grilled plenum box see Figure 8 The return air pattern is front free return The supply air outlet is provided with a flange for connecting the ductwork refer to the inst...

Страница 15: ...provided with a turned in flange on top of the unit for connection of ductwork refer to the installation drawing provided with the unit The connection of ductwork to the unit may be made with either p...

Страница 16: ...emove the shipping support brackets after the A C unit is mounted in it s final location 2 6 Optional Equipment Field Installed NOTE Do not mount any optional equipment on the unit access doors 2 6 1...

Страница 17: ...g and raising the fans Hold the fan assembly down so the top plate is on the floor of the cabinet as shown in Figure 12 Align the two holes in each corner of the top plates with the threaded inserts i...

Страница 18: ...mount the sensor Temperature Humidity Sensor 1 Remove the cover from the base of the sensor by squeezing it at the top and bottom CAUTION Take care not to damage the exposed tem perature humidity sens...

Страница 19: ...sor may be used for supply air control The sensor is field installed in the supply air stream The supply air temperature and humidity are monitored by the system controller and compared to limit value...

Страница 20: ...densate drain line 2 7 Piping Connections 2 7 1 Chilled Water Hot Water Pipe connections for the chilled water and optional hot water reheat piping are sweat connections In most cases they terminate i...

Страница 21: ...NOTE 2 Figure 16 Condensate Pump If an optional field installed condensate pump is used a p trap must be installed to allow proper condensate drainage see Figure 16 The height of the trap must be a m...

Страница 22: ...required WARNING Verify power is turned off before making connections to the equipment NOTE All wiring must conform to local and national electrical code requirements Use of copper conductors only is...

Страница 23: ...g 6 Power Switches Motor Starter Protectors Quantity Varies 7 Water Detector Control Module Optional CAUTION Prior to unit operation an adequate unit to earth ground must be connected to the unit 2 8...

Страница 24: ...electrical box see Figure 18 If customer furnished the wire insulation must be rated at 600V Refer to the electrical schematic supplied with your unit for proper wire terminations 2 9 System Settings...

Страница 25: ...e humidifier Visually check for vapor leaving the steam head or feel if the cylinder is warm to verify if the humidifier is operational In all cases 1 to 6 hours might be required to see a desired lev...

Страница 26: ...as automatic controls may start them unexpectedly 4 1 1 Compact CWE Precision A C Unit 4 1 1 1 Air Filter The air filter is usually the most neglected item in an air conditioning system To maintain e...

Страница 27: ...10 VDC control signal to the fan s Refer to the electric drawing to determine the correct I O board terminal numbers This must done within 15 seconds of turning the disconnect switch On or the control...

Страница 28: ...ped see item immediately above e Heater element burned out Check continuity with an ohmmeter Replace heater element Hot Water Heater a Low hot water flow Check hot water flow at supply source Inoperab...

Страница 29: ...s When repairs are completed remove all traces of flux After any repair pressurize the system to check for leaks prior to recharging the system 4 4 4 3 1 3 Humidifier Cylinder Replacement After an ext...

Страница 30: ...Push the On Off Drain switch to the On position 17 Replace the cover on the electric box and turn the main power disconnect switch to the On position 18 Turn on the water supply to the humidifier 19 T...

Страница 31: ...han UPS ground the customer is responsible for the shipping charges If you do not have established credit with SATS you must give a freight carrier account number A written or faxed purchase order is...

Страница 32: ...Mar 2012 Compact CWE Series Installation Operation Maintenance Manual Air Technology Systems Inc...

Страница 33: ...y line connected to humidifier If required If shut off valve is installed open valve 9 Safety pan installed under ceiling mounted equipment if required 10 Filter s installed if required 11 Ductwork co...

Страница 34: ...Mar 2012 Compact CWE Series Installation Operation Maintenance Manual Air Technology Systems Inc...

Страница 35: ...perate Properly Semi Annually Tighten Electrical Connections Clean Unit as Necessary Check Contacts on Contactors Clean Coils for Pitting Clean Condensate Pump Heat Reheat Operational Annually Inspect...

Страница 36: ...Mar 2012 Compact CWE Series Installation Operation Maintenance Manual Air Technology Systems Inc...

Страница 37: ...Mar 2012 Compact CWE Series Installation Operation Maintenance Manual Air Technology Systems Inc NOTES...

Страница 38: ...Mar 2012 Compact CWE Series Installation Operation Maintenance Manual Air Technology Systems Inc...

Страница 39: ...Load Amps FOB Freight on Board HACR Heating Air Conditioning Refrigeration HP Horse Power Hz Hertz IAQ Indoor Air Quality in w g Inches of Water Gauge kVA Kilo Volt Amps kW Kilowatt MAX CKT BKR Maxim...

Страница 40: ...t CWE Series Installation Operation Maintenance Manual Air Technology Systems Inc OZZ0003 Rev E March 2012 Compact CWE Series Installation Operation and Maintenance Specifications are subject to chang...

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