McQuay Enfinity CCH series Скачать руководство пользователя страница 15 | Manualshive

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McQuay Enfinity CCH series Скачать руководство пользователя страница 15

IM 742 / Page 15

●

Condensate Overflow Protection

– A liquid sensor at

the top of the drain pan senses a high water level . Upon

sensing water, cooling operation is suspended, while

heating operation is allowed . The controller creates an

alarm available in software . The alarm automatically

resets when the water level returns to normal .

●

Safety Control

– The unit monitors refrigerant pressure

and generates separate high-pressure and low-pres-

sure alarms available in software . While either alarm is

active, compressor operation is suspended . In a refriger-

ant low-temperature condition, an alarm occurs and the

unit operates in cooling mode for 60 seconds to defrost

the heat exchanger, after which compressor operation is

suspended . These alarms can be reset in software or by

cycling power to the controller .

●

Attained Temperature and Water Temperature Alarms

– Attained temperature, water temperature alarms with

software-adjustable setpoints are available in software .

The controller samples supply air and records attained

temperatures for heating and cooling . If after two hours

of operation, the attained temperature does not meet the

software-configurable setpoint for heating or cooling as

appropriate, a software alarm occurs . The alarm auto-

matically resets when the attained temperature is within

temperature is within setpoints . The controller also

monitors leaving water temperature . If the leaving water

temperature is outside software-configurable setpoints,

compressor operation is suspended and high or low

water temperature alarms occur . The alarm automatically

resets when the water temperature returns to within 6

deg . F of the setpoint .

●

Unit Self-test Mode

– While the unit is in occupied

mode, a self-test can be initiated via software . Upon

initiation of the test, compressor operation is suspended

for a minimum of five minutes, cooling attained tem-

peratures are cleared, and attained temperature alarms

are cleared . The unit then switches to full heat for four

minutes and then records the attained supply air tem-

perature . Compressor operation is then suspended for

five minutes . The unit then switches to full cooling for

four minutes and the attained supply air temperature

is recorded . Attained temperature alarms are set if the

attained temperatures failed to reach alarm setpoints

during heating or cooling .

BACnet

®

WSHP Unit Controller

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Содержание Enfinity CCH series

Страница 1: ...Electrical Data 5 Piping 5 Cleaning Flushing System 6 Start up 7 Operating Limits 8 Typical Wiring Diagrams 9 11 Unit Operation 12 14 Thermostat Connections 16 17 Options for Mark IV AC Units 18 21 Fi...

Страница 2: ...eck the available ceiling height versus the height of the unit 6 Note the location and routing of water piping conden sate drain piping and electrical wiring The locations of these items are clearly m...

Страница 3: ...res 1A and 1B 6 When attaching the hanger rods to the unit a double nut is recommended since vibration could loosen a single nut The installer is responsible for providing the hex nuts when installing...

Страница 4: ...etween the conditioner discharge and the distribution diffusers Return air ducts can be brought in through a low side wall filter grille and then up through the stud pieces to a ceiling plenum or thro...

Страница 5: ...rmance and minimum sound requirements Fan sound levels and performance can be affected by external static pressure changed Disconnect and cap the red lead wire and inter change it with the orange lead...

Страница 6: ...ure 7 Figure 7 Supply return runouts connected together 2 Fill the system at the city water makeup connection with all air vents open After filling close all air vents The contractor should start main...

Страница 7: ...erature rise through the machine should not exceed 35 F 19 C If the air tempera ture exceeds 35 F 19 C then the water flow rate is inadequate 6 Check the elevation and cleanliness of the condensate li...

Страница 8: ...di tion It is assumed that such a start up is for the purpose of bringing the building space up to occupancy temperature temperature and or humidity and equipment performance reliability and service l...

Страница 9: ...ervice personnel should be observed or dam age to controller may result 5 Terminal block on Mark IV AC board provides 24 VAC at terminals R and C All other outputs are 24 VDC 6 Field supplied relays i...

Страница 10: ...is used transformer must be rewired by disconnecting the power lead from the red transformer primary wire and connecting the power lead to the orange transformer primary wire Place an insulation cap...

Страница 11: ...ce an insulation cap on the red transformer primary wire 2 All temperature and pressure switches are normally closed Notes 1 A 208 230V unit is factory wired for 208V operation If 230V power supply is...

Страница 12: ...ad ShedOff Off On Off Off Unoccupied Mode On On Off Off Unit Shutdown Off Flash Off On Page 12 IM 742 Unit Operation The Remote Reset feature provides the means to remotely reset automatic lockouts ge...

Страница 13: ...ts IM 742 Page 13 MicroTech 2000 WSHP Unit Controller MicroTech 2000 Unit Controller LED Indication Status LED State Mode On Continually Occupied Occupied Load Shed On 1 2 sec Off 5 1 2 sec Unoccupied...

Страница 14: ...operation Fan operation can be customized in software to run continuously during occupied mode or to cycle ON or OFF appropriately on a call for heating and cooling Cooling mode On a call for cooling...

Страница 15: ...operation the attained temperature does not meet the software configurable setpoint for heating or cooling as appropriate a software alarm occurs The alarm auto matically resets when the attained tem...

Страница 16: ...G Thermostat Terminals C R 7 Day Programmable Electronic Thermostat P N 107095901 Thermostat Connection Diagrams Mark IV AC Units Unit Sizes 007 070 Non Programmable Electronic Thermostat P N 66805420...

Страница 17: ...t Grn Red Wall Sensor Locate the sensor on a wall where exposure to unrestrict ed air circulation represents the average temperature of the space A common mistake is to mount the sensor too close to t...

Страница 18: ...e Mark IV AC board when using standard off the self relays The auxiliary relay can be used to provide fault signals unit operation signals or to provide a means for remote equipment to control the Mar...

Страница 19: ...Control Panel O W2 G W1 Y1 F E L U A P V R C G W Y C L WSHP Mark IV AC Board Low Voltage Terminal Strip WSHP Mark IV AC Board Low Voltage Terminal Strip O W2 G W1 Y1 F E L U A P V R C 1 2 3 Auxiliary...

Страница 20: ...Override Pot1 Boilerless System Board 43 Ohm 4 pin Plug Water Temperature Sensor Signal to remote duct heater control circuit F L W1 V Mark IV Board Terminals 9 66 245 mm 007 042 14 50 368 mm 048 060...

Страница 21: ...ter Controller Terminals Daisy chain to other Mark IV AC board P and C terminals 64 58 65 WSHP Mark IV AC Board Low Voltage Terminal Strip Circuit 1 Pump Restart Relay 7 6 5 4 3 2 1 O W2 G W1 Y1 F E L...

Страница 22: ...e WSHP chassis 24VAC Pilot Duty Relay by others Terminals Located on Microtech 2000 Auxiliary Board J6 24VAC Pilot Duty Relay by others Use contacts as needed for option Terminals Located on Microtech...

Страница 23: ...cessible to the end user For example HP LT and COF are not available for use by the end user Typically the Mark IV AC board s R 24vac terminal is used to drive the board s thermostat inputs and contro...

Страница 24: ...ing Check compressor wiring for defective wiring or loose connection Check thermostat for improper location Check for defective compressor internal windings with ohm meter Check for bad compressor cap...

Страница 25: ...and atmosphere pressure it can become com bustible under pressure when mixed with air NOTE R 410A should not be mixed with air under pressure for leak testing Pressure mixtures of dry nitrogen and R...

Страница 26: ...ng system to the air to refrigerant heat exchanger coil The liquid then evaporates becoming a gas at the same time absorbing heat and cooling the air passing over the surfaces of the coil The refriger...

Страница 27: ...een through the filter when held up to sunlight or a bright light it should be changed A more critical standard may be desirable 3 The condensate drain pan should be checked annually and cleaned and f...

Страница 28: ...to www mcquay com This document contains the most current product information as of this printing For the most up to date product information please go to www mcquay com Products Manufactured in an I...

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