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nVent.com/HOFFMAN 

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 13

Displaying and changing program settings

To view or access the settings 

To access folder menus: 

1.  Press 

 button to display passcode screen, the screen displays 

PSd

 on line 

1

 and 

0000

 on line 

2

.

2.  Press 

 button to access to passcode , the first digit of 

0000

 is flashing and press 

3

 more times until the last digit of 

0000

 flashes.

3.  Press 

 arrow two times to change the 

0

 to 

2

. Press 

 for access to folder menus.

Note:

 to exit the security level to the main screen wait one minute with no action or Press 

 arrow until 

LOG Out

 message displays, then 

press 

 button.

To change a parameter setting 

1.  Once in the folder menu navigate to the desired setting to be changed using the 

 arrow to scroll and 

 button to access a menu or 

parameter.

2.  To change a parameter Press 

 button and parameter value will begin to flash.

3.  Press 

/

 arrow to the desire value.

4.  Press 

 button to save the setting and the screen will revert to the parameter mnemonic.

Note:

 if 

 button is not pressed, the new setpoint is not saved.

To exit the parameter settings to the main screen wait one minute with no action or Press 

 arrow few times until 

ESC

 displays, then press 

 button to return to 

UoF

 screen. From the 

UoF

 screen Press 

 arrow few times until 

LOG Out

 message displays, then press 

 button to 

return to the main screen.

Selecting 

ESC

 returns to folder menu.

Selecting 

LOG out

 returns to main screen.

Heat/cool operating parameters 

Mnemonic Parameter

Description

Default Value

Range

CSt

1

Cooling setpoint

80

 F  

26

.

7

 C

72

 F to 

120

 F  

22

.

2

 to 

48

.

9

 C

Cd (Cd

1

)

1

Cooling differential 

7

 F  

3

.

9

 C

2

 F to 

25

 F  

1

.

1

 to 

13

.

9

 C

Cd

2

4

Cooling differential 

2

15

 F  

8

.

3

 C

HSt

2

 

3

Heating setpoint

50

 F  

10

.

0

 C

45

 F to 

60

 F  

25

.

0

 to 

33

.

3

 C

Hd

3

Heating differential 

7

 F  

3

.

9

 C

2

 F to 

25

 F  

1

.

1

 to 

13

.

9

 C

1.  Compressor or cooling turns ON at CSt + Cd and OFF at CSt 
2.  Heater or heating turns ON at HSt and OFF at HSt + Hd 
3.  Heating mode is only applied to a unit with heater option 
4.  Cooling differential 

2

 is only applied to 

2

-stage compressor and lead-lag application 

Alarm parameters 

Mnemonic Para

Description

Default value

Ht

High temperature alarm setpoint

125

 F  

51

.

7

 C

Lt

Low temperature alarm setpoint

40

 F  

4

.

4

 C

dO

Door open alarm setting

NC

ArOP

Alarm relay output

NO

Note:

 (

4

) The alarm relay output logic is designed to be configurable 

Содержание X2302

Страница 1: ...Extreme AC Air Conditioner X2302 Model Instruction Manual P N 89215748 Rev E...

Страница 2: ......

Страница 3: ...rgizing the controller 10 Control status indication 10 Displaying and changing program settings 13 To view or access the settings 13 Heat cool operating parameters 13 Alarm parameters 13 Displaying te...

Страница 4: ...ing the air conditioner to the enclosure Refer to the nameplate for proper electrical current requirements and then connect the power cord to a properly grounded power supply Minimum circuit ampacity...

Страница 5: ...in upright position during operation 5 To avoid cross threading mounting inserts start bolts by hand before tightening with a wrench or ratchet driver 6 Refer to the top of the nameplate for electrica...

Страница 6: ...g cutout dimensions 22 22 564 3X 48 12 95 24 3X 5 00 127 3X 10 63 270 3X 16 25 413 3X 21 25 540 3X 43 11 3X 4 58 116 3X 9 15 232 12X 31 8 20 32 516 8 40 213 80 20 89215771 Cutout Dimensions Mounting G...

Страница 7: ...nVent com HOFFMAN 7 Wire diagram 89206067 REV C...

Страница 8: ...8 nVent com HOFFMAN Schematics 89206866 REV B J3...

Страница 9: ...3016SP 89083016SP 6 Switch MALF 89096948SP 89096948SP 7 Filter Drier 52602803SP 52602803SP 8 Coil Condenser 20102001SP 20102001SP 9 Coil Evaporator 89204519SP 89204519SP 10 Controller Smart 89202719SP...

Страница 10: ...ssures to equalize in order for the air conditioner to restart Operating the air conditioner below the minimum ambient temperature or above the maximum ambient temperatures indicated on the nameplate...

Страница 11: ...on Indication Icon Status C White When operating temperature in degrees Celsius ON F White When operating temperature in degrees of Fahrenheit ON Main Field Line 1 White Display inlet temperature ON M...

Страница 12: ...12 nVent com HOFFMAN...

Страница 13: ...ain screen wait one minute with no action or Press arrow few times until ESC displays then press button to return to UoF screen From the UoF screen Press arrow few times until LOG Out message displays...

Страница 14: ...creen will be automatically revert to the main screen Note if no alarms are present then only ESC will be displayed in the folder There are seven possible alarms non latching detectable by the control...

Страница 15: ...ature data on screen There are two temperature probes in the air conditioner where one is reading the enclosure air temperature incoming to the air conditioner and other is reading the cooled air leav...

Страница 16: ...secondary units 2 The primary unit monitors the enclosure temperatures of all the units and manages the ON OFF status of cooling and heating based on the unit reporting the highest temperature 3 When...

Страница 17: ...utton to access to parameter H menu Parameter Description Available Range PS Settings Default H01 Mode SA stand alone PS primary secondary SA PS primary secondary LL lead lag H02 Device ID 1 up to 10...

Страница 18: ...conditioner unit remote communication features Air conditioners that include the optional nVent HOFFMAN network card RAC module have remote communication capabilities utilizing SNMP Modbus TCP EtherN...

Страница 19: ...west or higher number of the Comm Port To view the controller data information from the A C unit In the nVent HOFFMAN A C Monitor main screen select Single ACU Monitor tab Click on Enable Comm button...

Страница 20: ...enclosure air temperature and other temperature settings information include the unit of measure The Enable Comm text on the button now changes to Disable Comm To stop the communication click on the D...

Страница 21: ...e allows to read and write Click on Enable Comm button to communicate to the network card and read the temperature information from the controller Now the temperature settings information in the contr...

Страница 22: ...8 J1 GROUND G0 1 BLK40 POWER 24VAC G 2 WHT41 J2 NA 5V 1 NA S3 2 INLET TEMP PROBE S1 3 RED NA Y1 4 DOOR OPEN SWITCH ID1 5 WHT63 GROUND O 6 WHT RESERVED S5 7 OUTLET TEMP PROBE S2 8 RED45 NA Y2 9 MAL FUN...

Страница 23: ...e and convenience of reputable refrigeration repair service personnel for recharging the air conditioner Inlet air filter Proper maintenance of the ambient air filter is critical to normal operation o...

Страница 24: ...c Contact nVent Equipment Protection for special recommendations Refrigerant loss Each air conditioner is thoroughly tested prior to leaving the factory to insure against refrigeration leaks Shipping...

Страница 25: ...cabinet and surrounding area to ensure adequate airflow to and from the unit on both the inlet and outlet air channels for the ambient and cabinet air Comments Seals Gaskets and Leaks Inspect and repa...

Страница 26: ...tage and retest or contact certified electrician Is the controller illuminated Is there correct supply voltage to controller 24 V DC Possible Causes 24 V Transformer Rectifier Check Wiring Replace con...

Страница 27: ...and wiring Clean replace filter and clean condenser coil Replace seals and gaskets on enclosure Monitor for normal operation Possible Causes Low Refrigerant Leak Check controller settings YES YES YES...

Страница 28: ...nVent com en us cooling field service request F GAS INFORMATION X230216GXXX X230226GXXX Refrigerant K hlmittel Ch odziwo R134a R134a GWP 1430 1430 Factory Charge F llmenge durch Hersteller Op ata Fab...

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