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JOHNSON CONTROLS

12

FORM 145.05-SU2 (1207)

This feature enables the unit to lower the supply air 

temperature to prevent the supply air dew point from 

dropping below the under floor temperature.

Field Wiring

A 10K Type II thermistor must be located in the under 

floor space and connected to IN-6 terminals 11 and 12 

of the main control board.

Programming

The following items must be programmed through the 

Setpoints

” section of the User Interface:

• 

“AC-S/A Dew En”

 must be set to ON

FLEXSYS DEW POINT TEMPERATURE CONTROL

• 

“AC-S/A Dew Min”

 set point must be pro-

grammed.  The default value is 48.0˚ F.  This is 

the lowest supply air temperature the control can 

use for dew point control.

• 

“AC-S/A Dew Max”

 set point must be pro-

grammed.  The default value is 60.0˚ F.  This is 

the highest supply air temperature the control can 

use for dew point control.

• 

“AC-S/A Dew Dif”

 set point must be pro-

grammed.  The default value is 5.0˚ F.  This value 

is subtracted from the under floor temperature 

and is used to establish a under floor dew point 

supply air temperature set point.

Содержание VERSECON YSWU Series

Страница 1: ...AIR CONDITIONING UNITS New Release Form 145 05 SU2 1207 VERSECON Indoor Upflow Self Contained Air Conditioner YSWU 10 105 Ton Water Cooled Indoor Downflow Self Contained Air Conditioner YSWD 10 105 T...

Страница 2: ...ls This individual will also be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question SAFETY SYMBOLS The following symbols are used in...

Страница 3: ...t YORK Applied Systems Service office It is the responsibility of operating service personnel to verify the applicability of these documents to the equipment in question If there is any question in th...

Страница 4: ...SUPPLY AIR AND RETURN AIR TEMPERATURE CONTROL 8 SUPPLY FAN OPERATION 9 SUPPLY FAN DUCT STATIC PRESSURE 9 FLEXSYS 10 COOLING SUPPLY AIR TEMPERATURE CONTROL 10 COOLING RETURN AIR TEMPERATURE CONTROL 10...

Страница 5: ...d by the User Interface should be diagnosed as referenced in the Installation Operation and Maintenance manual refer to Faults and Alarms in the Service section of the manual QUICK START GUIDE VERSECO...

Страница 6: ...t Connect the wire of a shielded twisted pair to the terminal of the Network Port Programming Go to the Daily Sched section of the User Interface Change the Daily Schedule Status to OFF CONDENSER WATE...

Страница 7: ...e return air temperature the unit will try to maintain COOLING SUPPLY AIR AND RETURN AIR TEMPERATURE CONTROL This feature allows the unit to control the staging of the compressor based on either the t...

Страница 8: ...Temp En must be set to ON The default is OFF AC Econ R A SP set point must be pro grammed The default value is 75 0 F This is the return air temperature the unit will try to maintain COOLING SUPPLY AI...

Страница 9: ...C The default value is 1 0 WC of SPSensors The control has the capability to use one or two duct static sensors If a single sensor is used this value would be set to 1 If two sensors are used this val...

Страница 10: ...temperature the unit will try to maintain COOLING SUPPLY AIR AND RETURN AIR TEMPERATURE CONTROL This feature allows the unit to control the staging of the compressor based on either the temperature di...

Страница 11: ...ed to Avg the control will compare the average of the two sensors to the Fan S A Pres SP and control the speed of the VFD based on these values SUPPLY AIR PROVING SET POINT The Unit Control monitors t...

Страница 12: ...of the User Interface AC S A Dew En must be set to ON FLEXSYS DEW POINT TEMPERATURE CONTROL AC S A Dew Min set point must be pro grammed The default value is 48 0 F This is the lowest supply air tempe...

Страница 13: ...a return air temperature The default value is OFF Econ Valve Min This parameter establishes the minimum position of the water side econo mizer valve The parameter can be set between 0 and 100 The defa...

Страница 14: ...A Econ En This parameter must be set to ON The default value is OFF Econ S A Tmp En This parameter must be set to ON if you want the water side economizer to be controlled by a supply air temperature...

Страница 15: ...1 Heat R A Tmp En must be set to ON The default is OFF Heat R A Tmp SP set point must be pro grammed It can be set between 40 0 F and 90 0 F The default value is 72 0 F This is the return air tempera...

Страница 16: ...value is 72 0 F This is the return air temperature the unit will try to maintain Tele 800 861 1001 www york com P O Box 1592 York Pennsylvania USA 17405 1592 Subject to change without notice Printed...

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