Lennox DELTA 2 Owner's manual

∆DELTA2 Microprocessor Controller. System Programming Manual.
∆DELTA 2RANGE.
MICROPROCESSOR CONTROLLER
SYSTEM PROGRAMMING MANUAL
UNITS WITH PGD DISPLAY

∆DELTA2 Microprocessor Controller. System Programming Manual.
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CONTENTS
PGD Display ___________________________________________________________ 3
Manufacturers Section ___________________________________________________ 4
Unit configuration Sub Section (Table 1) ____________________________________ 5
Parameters Sub Section (Table 2) __________________________________________ 6
Timing Subsection ( Table 3 ) _____________________________________________ 8
Unit Initialisation (Table 4) _______________________________________________ 9
User Section (Table 5) ____________________________________________________ 9
Maintenance Section (Table 6)____________________________________________ 11
Inputs/Outputs Section (Table 7)__________________________________________ 12
Clock Section (Table 8) __________________________________________________ 14
Alarms _______________________________________________________________ 15
Document Reference: L 4.19-08-10-03

∆DELTA2 Microprocessor Controller. System Programming Manual.
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PGD DISPLAY
Turning the unit On/Off : Pressing the “ ESC” & the “ Enter / Return” arrow buttons
together turns on and off the unit at the display. Pressing the up arrow button followed by
the “ Enter / Return” arrow button also turns unit on/off. Follow on screen instruction.
Alarm button: By pressing this button you can display the alarm that has occurred & reset it manually.
When the red led indicator lights up, at least one alarm condition has occurred. If there are multiple alarms
then using the arrow “ up ” & “ down ” buttons lets you scroll through them.
Up arrow button: Displays the program windows and allows the user to set the value of the control
parameter
Down arrow button: Displays the program windows and allows the user to set the value of the control
parameter. In default menu, pressing down arrow button displays unit operating mode.
Enter / Return arrow button: Confirms the set data.
Escape button: By pressing this button, you go back one level from where you are.
Program button: By pressing this button, you get a range of sub-menu’s.
+

∆DELTA2 Microprocessor Controller. System Programming Manual.
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PROGRAM BUTTON
Pressing the “Prg”button brings up a screen with various sub-menu’s some which are password protected.
Sub-menu’s are as follows:
MAINTENANCE
PRINTER – NOT AVAILABLE
INPUT / OUTPUT
CLOCK
SETPOINT
USER
MANUFACTURER
VERSION
Sections on Setpoint & Version are self explanatory. The Printer is not available on these units.
The sections reviewed here are MANUFACTURER, USER, MAINTENANCE,
INPUT / OUTPUT & CLOCK.
There is also an Alarm list included at the end of this manual.
MANUFACTURER SECTION
The screens below appears when the “Prg” button is pressed & using the arrow up & arrow down buttons
until you get to MANUFACTURER.This section is password protected and the relevant password is
required for access to some screens. To enter the password the “up” and “down” & “enter” arrow keys are
used.
The manufacturer’s part of the program is subdivided into 4 distinct sections as outlined below. Each
section will be examined separately. Sections are:
UNIT CONFIGURATION.
PARAMETERS.
TIMING.
UNIT INITIALISATION.

∆DELTA2 Microprocessor Controller. System Programming Manual.
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UNIT CONFIGURATION – SUBSECTION.
TABLE NO. 1
Screen Ref – 1
TEXT OPTION FACTORY SET DESCRIPTION
Printer N/A N Not Applicable & Option Not Available
Supervisor Y/N See Note If a Supervisor is connected to the unit
Select Temp C/F C/F C Degrees Fahrenheit or Centigrade
Humidifier Y/N Y For Units With Humidifier
Screen Ref – 2
TEXT O
PTION F ACTORY SET D ESCRIPTION
Enable Humidity Probe Y/N Y For Units With Humidifier
Select Probe Type See Note 0-1 V Always 0-1V. 0-10V & 4-20mA Options in Special Cases
Screen Ref – 3
TEXT OPTION FACTORY SET DESCRIPTION
Select Room Temp Probe Type See Note NTC Sensor is always NTC. PT 1000 in special cases
Screen Ref – 4
TEXT OPTION FACTORY SET DESCRIPTION
Enable Supply Air Probe Y/N See Note Only for units with this option. NTC or PT 1000 if used
Select Supply Air Probe Type See Note See Note Only for units with this option. NTC or PT 1000 if used
Screen Ref – 5
TEXT OPTION FACTORY SET DESCRIPTION
Enable Water Entering Probe Y/N See Note For CW or units with Freecooling. Probe type is NTC
Select Water Entering Probe See Note See Note For CW or units with Freecooling. Probe type is NTC
Screen Ref – 6
TEXT OPTION FACTORY SET DESCRIPTION
Enable Water Leaving Probe Y/N See Note For CW or units with Freecooling. Probe type is NTC
Select Water Leaving Probe See Note See Note For CW or units with Freecooling. Probe type is NTC
Screen Ref – 7
TEXT OPTION FACTORY SET DESCRIPTION
Enable External Air Probe Y/N See Note Only for units with this option. NTC or PT 1000 if used
Select External Air Probe Type See Note See Note Only for units with this option. NTC or PT 1000 if used
Screen Ref – 8
TEXT OPTION FACTORY SET DESCRIPTION
Enable Freecooling Y/N See Note For units with Freecooling.
Freecooling Type W/A See Note Depends on Freecooling Type. W=Water & A= Ext. Air
Screen Ref – 9
TEXT OPTION FACTORY SET DESCRIPTION
Freecooling by AO Y/N See Note For units with Freecooling. Activates Analog Output
Screen Ref – 10
TEXT OPTION FACTORY SET DESCRIPTION
No. of Units in Local Network 000 See Note For Local Network of up to 16 Units
Screen Ref – 11
TEXT O
PTION F ACTORY SET D ESCRIPTION
Heaters No. 0/1/2 See Note If Unit has heaters & number of stages
Compressors No. 0/1/2 See Note If Unit has compressors & number of compressors
Screen Ref – 12
TEXT OPTION FACTORY SET DESCRIPTION
Cooling Valve Y/N See Note Depends if Unit Has Cooling Valve
Heating Valve Y/N See Note Depends if Unit Has Heating Valve
Screen Ref – 13
TEXT OPTION FACTORY SET DESCRIPTION
Condensate Pump Alarm Input N/C N/O See Note Depends on Condensate Pump Type & Alarm Output
Notes
1. On units with pCO XS microprocessor board Screen Ref – 13 is user selectable for filter clog or condensable pump.

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PARAMETERS – SUBSECTION.
TABLE NO. 2
Screen Ref – 1
TEXT OPTION FACTORY SET DESCRIPTION
Compressors with Freecooling Y/N See Note For units with Freecooling. Can be with or without.
Screen Ref – 2
Rotation of Compressors Y/N Y Compressor Operation is Rotated for Equal Wear
Compressors for Dehumidification. 0/1/2 1 Normally only 1 Compressor set for Dehumidification
Regulation Type P / P+I P Can be set as P+I to add an Integration Time
Screen Ref – 3
TEXT OPTION FACTORY SET DESCRIPTION
Compressor 1 without Freecooling
Set 000.0% 025.0% Defines Operation Point of Compressor 1
Hysterisis 000.0% 025.0% Defines Operation Point of Compressor 1
Screen Ref – 4
TEXT OPTION FACTORY SET DESCRIPTION
Compressor 2 without Freecooling
Set 000.0% 075.0% Defines Operation Point of Compressor 2
Hysterisis 000.0% 025.0% Defines Operation Point of Compressor 2
Screen Ref – 5
TEXT O
PTION F ACTORY SET D ESCRIPTION
Compressor 1 with Freecooling
Set 000.0% 050.0% Defines Operation Point of Compressor 1 in Freecooling
Hysterisis 000.0% 016.0% Defines Operation Point of Compressor 1 in Freecooling
Screen Ref – 6
TEXT OPTION FACTORY SET DESCRIPTION
Compressor 2 with Freecooling
Set 000.0% 083.3% Defines Operation Point of Compressor 2 in Freecooling
Hysterisis 000.0% 016.6% Defines Operation Point of Compressor 2 in Freecooling
Screen Ref – 7
TEXT OPTION FACTORY SET DESCRIPTION
Step Heater 1 Set 000.0% 025.0% Defines Operation Point of Heater 1
Step Heater 1 Hysterisis 000.0% 025.0% Defines Operation Point of Heater 1
Screen Ref – 8
TEXT O
PTION F ACTORY SET D ESCRIPTION
Step Heater 2 Set 000.0% 050.0% Defines Operation Point of Heater 2
Step Heater 2 Hysterisis 000.0% 025.0% Defines Operation Point of Heater 2
Screen Ref – 9
TEXT OPTION FACTORY SET DESCRIPTION
Cool Valve 0-10V
Start 0.00% 0.00% If Cooling Valve Installed
Stop 100.00% 100.00% If Cooling Valve Installed
Screen Ref – 10
TEXT OPTION FACTORY SET DESCRIPTION
Dehumidification with CW Valve Y/N See Note Set as Y if Cooling Valve Installed
Screen Ref – 11
TEXT OPTION FACTORY SET DESCRIPTION
Heat Valve 0-10V
Start 0.00% 0.00% If Heating Valve Installed
Stop 100.00% 100.00% If Heating Valve Installed
Screen Ref – 12
TEXT OPTION FACTORY SET DESCRIPTION
Damper/Valve Freecooling Start 000.0% 000.0% Defines Starting Valve Position
Damper/Valve Freecooling Stop 000.0% 100.0% Defines Stopping Valve Position

∆DELTA2 Microprocessor Controller. System Programming Manual.
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TABLE NO. 2 CONTINUED
Screen Ref – 13
TEXT OPTION FACTORY SET DESCRIPTION
Step Dehumidification Set 000.0% 050.0% Defines Operation Point of Dehumidification
Step Dehumidification Hysterisis 000.0% 050.0% Defines Operation Point of Dehumidification
Screen Ref – 14
TEXT OPTION FACTORY SET DESCRIPTION
Low Temp Limit Stop Dehum
Set 000.0% 060.0% Low Temp Point where Dehum is enabled / disabled
Hysterisis 000.0% 035.0% Low Temp Point where Dehum is enabled / disabled
Screen Ref – 15
TEXT OPTION FACTORY SET DESCRIPTION
Humidifier See Note See Note Humidifier Size. xx kg/hr depending on Unit
Voltage See Note See Note Based on Unit Voltage
Phases Number 3 3 Always 3 Phase Power
Tam Model 100 100 Always a Tam 100 Transformer
Screen Ref – 16
TEXT OPTION FACTORY SET DESCRIPTION
Enable drain with voltage Y/N N Humidifier cannot drain when live
Parameter C0 See Note See Note Set at factory, do not adjust
Parameter C1 See Note See Note Set at factory, do not adjust
Screen Ref – 17
TEXT OPTION F
ACTORY SET D ESCRIPTION
Supervisor Comms Speed See Note See Note From 1,200 – 19,200 bps
Screen Ref – 18
TEXT OPTION FACTORY SET DESCRIPTION
Room Humidity Start 000.0% 010.0% Default settings for reading Humidity Sensor
Room Humidity Stop 000.0% 090.0% Default settings for reading Humidity Sensor
Screen Ref – 19
TEXT OPTION FACTORY SET DESCRIPTION
Erase Alarm History Y/N N Erases Alarm History
Screen Ref – 20
TEXT OPTION FACTORY SET DESCRIPTION
Local Network Mode See Note See Note Master Control or Rotate by Time or Alarms
Screen Ref – 21
TEXT OPTION FACTORY SET DESCRIPTION
Units in Standby 000 See Note Assigns No. of Units in Standby
Reset Sequence Y/N See Note Resets the Rotation Sequence
Screen Ref – 22
TEXT OPTION F
ACTORY SET D ESCRIPTION
Hours/Minutes Hour/Min See Note Select Hours or Minutes
Rotation Time 000 See Note Can be set up to 500
Screen Ref – 23
TEXT OPTION FACTORY SET DESCRIPTION
Force Unit in Standby Mode Y/N See Note Makes Standby Units Available
Delay Time Low Temperature 000m 003m Time Delay to Start Standby Units Low Temperature
Delay Time High Temperature 000m 003m Time Delay to Start Standby Units High Temperature

∆DELTA2 Microprocessor Controller. System Programming Manual.
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Table No. 2 CONTINUED
Screen Ref – 24
TEXT OPTION FACTORY SET DESCRIPTION
Low Temperature Offset 00.0 C 04.0 C Starts Standby Units 4 C below Setpoint
Low Temperature Differential 00.0 C 03.0 C Stops Standby Units 3 C below Setpoint
Screen Ref – 25
TEXT OPTION FACTORY SET DESCRIPTION
High Temperature Offset 00.0 C 04.0 C Starts Standby Units 4 C above Setpoint
High Temperature Differential 00.0 C 03.0 C Stops Standby Units 3 C above Setpoint
TIMING – SUBSECTION.
TABLE NO. 3
Screen Ref -1
TEXT OPTION FACTORY SET DESCRIPTION
Time delay switching main fan on. 0000 Sec 0001 Sec Main fan start up delay time.
Time delay switching main fan off. 0000 Sec 0020 Sec Main fan off delay time.
Screen Ref -2
TEXT OPTION FACTORY SET DESCRIPTION
Integral time (only P+I Control) 0000 Sec 0600 Sec Integration time for P+I control.
Delay Loss of Flow Alarm 0000 Sec 0010 Sec Loss of Water Flow Alarm Delay
Screen Ref -3
TEXT O
PTION F ACTORY SET D ESCRIPTION
Low pressure alarm delay time. 0000 Sec 0180 Sec Low pressure alarm override time
Temp/Hum alarm delay time. 0000 Sec 0600 Sec Temperature & Humidity Alarm Time Delays
Screen Ref -4
TEXT OPTION FACTORY SET DESCRIPTION
Delay Alarm – Air Flow 0000 Sec 0010 Sec Air Flow Alarm time Delay
Screen Ref -5
TEXT OPTION FACTORY SET DESCRIPTION
Delay Serious Alarm 0000 Sec 0000 Sec Serious Alarm Time Delay
Delay Non-Serious Alarm 0000 Sec 0000 Sec Non Serious Alarm Time Delay
Screen Ref – 6
TEXT OPTION FACTORY SET DESCRIPTION
Compressor Min Off Time 0000 Sec 0180 Sec Defines Minimum Compressor on Time
Compressor Min On Time 0000 Sec 0060 Sec Defines Minimum Compressor off Time
Screen Ref – 7
TEXT OPTION FACTORY SET DESCRIPTION
Winter Start LP Override Delay 0000 Sec 0180 Sec LP Switch time delay for Winter Start
Screen Ref – 8
TEXT OPTION F
ACTORY SET D ESCRIPTION
Start Delay Same Compressor 0000 Sec 0360 Sec Defines Start Delay of the Same Compressor
Compressor Inter Stage Delay 0000 Sec 0010 Sec Defines an Inter Stage Delay for Twin Compressors
Screen Ref – 9
TEXT OPTION FACTORY SET DESCRIPTION
Heater Inter Stage Delay 0000 Sec 0003 Sec Heater Inter Stage Delay

∆DELTA2 Microprocessor Controller. System Programming Manual.
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UNIT INITIALISATION – SUBSECTION
TABLE NO. 4
Screen Ref – 1
TEXT OPTION FACTORY SET DESCRIPTION
Press Enter Key to insert default
values
N/A N/A Pressing the enter key will insert default values
Screen Ref – 2
TEXT OPTION FACTORY SET DESCRIPTION
New Manufacturers Password 0000 N/A Allows Manufacturers Password to be changed
Notes
1. Great care must be exercised in this section as using this will reload the factory settings but the unit must then be re-
configured to reflect the installed options. Default DX unit is a single circuit DX unit with 2 stage heating & Default
CW unit is a CW unit with 0-10V valve with 2 stage heating .
USER SECTION
The screens below appears when the “Prg” button is pressed & using the arrow up & arrow down buttons until you
get to USER. This section is password protected and the relevant password is required for access to some screens. To
enter the password the “up” and “down” & “ enter” arrow keys are used.
TABLE NO. 5
Screen Ref – 1
TEXT OPTION FACTORY SET DESCRIPTION
Enable On/Off Keyboard Y/N Y Enables/Disables On/Off at Display
Screen Ref – 2
TEXT OPTION FACTORY SET DESCRIPTION
Temperature setpoint limits
Minimum. 00.0 C 16.0 C Minimum allowable temperature setpoint value entered.
Maximum. 00.0 C 26.0 C Maximum allowable temperature setpoint value entered.
Screen Ref – 3
TEXT OPTION FACTORY SET DESCRIPTION
Humidity setpoint limits
Minimum. 000.0 % 35.0% Minimum allowable humidity setpoint value entered.
Maximum. 000.0 % 65.0% Maximum allowable humidity setpoint value entered.
Screen Ref – 4
TEXT O
PTION F ACTORY SET D ESCRIPTION
Temperature - Cooling Band 00.0 C See Note 02.0 C DX Units & 01.7 C CW & Freecooling Units
Temperature - Heating Band 00.0 C See Note 02.0 C DX Units & 01.7 C CW & Freecooling Units
Temperature - Neutral Zone 00.0 C See Note 00.0 C DX Units & 00.3 C CW & Freecooling Units
Screen Ref – 5
TEXT OPTION FACTORY SET DESCRIPTION
Dehumidification Valve Limit 0.00V See Note Default is 10.00V
Screen Ref – 6
TEXT OPTION FACTORY SET DESCRIPTION
Humidity Control Band 00.0% 04.0% Control Humidity Band – Humidification
Humidifier Output Limit 00.0Kg/hr See Note Depends on size of unit.
Screen Ref – 7
TEXT OPTION FACTORY SET DESCRIPTION
Auto Restart after Power Failure Y/N Y Allows Unit to be switched off after Power Failure
Enable Remote on/off Y/N Y Enables remote on/off shutdown facility.

∆DELTA2 Microprocessor Controller. System Programming Manual.
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TABLE NO. 5 CONTINUED
Screen Ref – 8
TEXT OPTION FACTORY SET DESCRIPTION
Freecooling Offset 00.0 C 5.0 or 14.0 C See notes at end of this table
Differential Start Freecooling 00.0 C 00.5 C Diff in Water Temps above start to stop Freecooling
Screen Ref – 9
TEXT OPTION FACTORY SET DESCRIPTION
Force Analogue Output Y4 Y/N N To Force Analogue Output Y4
Output Voltage 00.0V 10.0V Can be set from 00.0V to 10.0V
Screen Ref – 10
TEXT O
PTION F ACTORY SET D ESCRIPTION
Temperature Alarm - Low Offset 00.0 C 6.0 C Room low temperature alarm offset from setpoint.
Temperature Alarm - High Offset 00.0 C 6.0 C Room high temperature alarm offset from setpoint.
Screen Ref – 11
TEXT OPTION FACTORY SET DESCRIPTION
Humidity Alarm - Low Offset 000.0 % 020.0 % Room low humidity alarm offset from setpoint.
Humidity Alarm - High Offset 000.0 % 020.0 % Room high humidity alarm offset from setpoint.
Screen Ref – 12
TEXT OPTION FACTORY SET DESCRIPTION
Temp Alarm Entering Water Low 00.0 C -5.0 C Entering Water Low Temp Alarm Threshold
Temp Alarm Entering Water High 00.0 C 45.0 C Entering Water High Temp Alarm Threshold
Screen Ref – 13
TEXT OPTION FACTORY SET DESCRIPTION
Temp Alarm Leaving Water Low 00.0 C -5.0 C Leaving Water Low Temp Alarm Threshold
Temp Alarm Leaving Water High 00.0 C 45.0 C Leaving Water High Temp Alarm Threshold
Screen Ref – 14
TEXT O
PTION F ACTORY SET D ESCRIPTION
Supply Air Temp Limit Enable Y/N See Note If Supply Air Limit Temperature Sensor Fitted
Setpoint 00.0 C 15.0 C If Supply Air Limit Temperature Sensor Fitted
Offset 00.0 C 05.0 C If Supply Air Limit Temperature Sensor Fitted
Screen Ref – 15
TEXT OPTION FACTORY SET DESCRIPTION
Select Alarm Type See Note See Note S=Serious & N=Non-serious. For Alarms : 1-18
Screen Ref – 16
TEXT OPTION FACTORY SET DESCRIPTION
Select Alarm Type See Note See Note S=Serious & N=Non-serious. For Alarms : 19-36
Screen Ref – 17
TEXT O
PTION F ACTORY SET D ESCRIPTION
Identification number for BMS 000 N/A If connected to a Supervisor, unit must be addressed.
Protocol Type See Note See Note Carel or Modbus or LON.
Screen Ref – 18
TEXT OPTION FACTORY SET DESCRIPTION
New user password 0000 N/A Enter new user defined user password.
Notes
1. If Freecooling unit is selected as Freecooling with Compressors (Parameters Screen 1) then Freecooling will be
enabled when the water is 5.0 C below the Return Air Temperature.
2. If Freecooling unit is selected as Freecooling without Compressors (Parameters Screen 1) then Freecooling will be
enabled when the water is 14.0 C below the Return Air Temperature.
3. Values noted in notes 1 & 2 are user adjustable.

∆DELTA2 Microprocessor Controller. System Programming Manual.
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MAINTENANCE SECTION
The screens below appears when the “Prg” button is pressed & using the arrow up & arrow down buttons until you
get to MAINTENANCE. This section is password protected and the relevant password is required for access to
some screens. To enter the password the “up” and “down” & “ enter” arrow keys are used.
TABLE NO. 6
Screen Ref -1
TEXT OPTION FACTORY SET DESCRIPTION
Run Hours Fan 0000 N/A Gives Fan Run Hours
Run Hours Compressor 1 0000 N/A Gives Compressor 1 Run Hours
Run Hours Compressor 2 0000 N/A Gives Compressor 2 Run Hours
Screen Ref -2
TEXT OPTION FACTORY SET DESCRIPTION
Run Hours Heater 1 0000 N/A Gives Humidifier Run Hours
Run Hours Heater 2 0000 N/A Gives Dehumidification Run Hours
Screen Ref -3
TEXT O
PTION F ACTORY SET D ESCRIPTION
Run Hours Humidifier 0000 N/A Gives Heater 1 Run Hours
Run Hours Dehumidify 0000 N/A Gives Heater 2 Run Hours
Screen Ref -4
TEXT OPTION FACTORY SET DESCRIPTION
Run Hours Freecooling 0000 N/A Gives Freecooling Run Hours
Screen Ref -5
TEXT OPTION FACTORY SET DESCRIPTION
Alarm History N/A N/A Press Alarm Button to view Alarm History
Screen Ref -6
TEXT OPTION FACTORY SET DESCRIPTION
Password 0000 0000 Password Required
Screen Ref -7
TEXT OPTION FACTORY SET DESCRIPTION
Fan Hours Alarm Threshold 000 x 000 200 x 1000 Fan Run Hours Alarm Threshold
Reset 000000 N/A Reset of Run Hours Fan
Screen Ref -8
TEXT O
PTION F ACTORY SET D ESCRIPTION
Comp 1 Hours Alarm Threshold 00 x 000 100 x 1000 Compressor 1 Run Hours Alarm Threshold
Reset 000000 N/A Reset of Run Hours Compressor 1
Screen Ref – 9
TEXT OPTION FACTORY SET DESCRIPTION
Comp 2 Hours Alarm Threshold 00 x 000 100 x 1000 Compressor 2 Run Hours Alarm Threshold
Reset 000000 N/A Reset of Run Hours Compressor 1
Screen Ref – 10
TEXT OPTION FACTORY SET DESCRIPTION
Heater 1 Hours Reset Y/N N Heater 1 Run Hours Reset
Heater 2 Hours Reset Y/N N Heater 2 Run Hours Reset
Screen Ref – 11
TEXT OPTION FACTORY SET DESCRIPTION
Humidifier Hrs Reset Y/N N Humidifier Run Hours Reset
Dehum. Hours Reset Y/N N Dehumidification Run Hours Reset
Screen Ref – 12
TEXT O
PTION F ACTORY SET D ESCRIPTION
Freecooling Hours Reset Y/N N Freecooling Run Hours Reset
Reset Y/N N Reset of Run Hours Heater 1 & 2

∆DELTA2 Microprocessor Controller. System Programming Manual.
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Table No. 6 CONTINUED
Screen Ref –13
TEXT OPTION FACTORY SET DESCRIPTION
Sensor Offset – Return Air Temp +/-9.9 C 00.0 C Allows Sensor Recalibration. +/- 9.9 C Available
Sensor Offset – Humidity +/-9.9 % 0.0% Allows Sensor Recalibration. +/- 9.9 % Available
Screen Ref –14
TEXT OPTION FACTORY SET DESCRIPTION
Sensor Offset – Supply Air Temp +/-9.9 C 00.0 C Allows Sensor Recalibration. +/- 9.9 C Available
Sensor Offset – Enter Water Temp +/-9.9 C 00.0 C Allows Sensor Recalibration. +/- 9.9 C Available
Screen Ref – 15
TEXT OPTION FACTORY SET DESCRIPTION
Sensor Offset – External Air Temp +/-9.9 C 00.0 C Allows Sensor Recalibration. +/- 9.9 C Available
Sensor Offset – Leaving Water +/-9.9 C 00.0 C Allows Sensor Recalibration. +/- 9.9 C Available
Screen Ref –16
TEXT OPTION FACTORY SET DESCRIPTION
Man Procedure – Fan (Master) Y/N N Allows Manual Running of Fan ( Master Fan)
Man Procedure – Fan (Slave) Y/N N Allows Manual Running of Fan ( Slave Fan )
Screen Ref –17
TEXT OPTION FACTORY SET DESCRIPTION
Man Procedure – Heater 1 Y/N N Allows Manual Running of Heater 1
Man Procedure – Heater 2 Y/N N Allows Manual Running of Heater 2
Screen Ref –18
TEXT OPTION FACTORY SET DESCRIPTION
Man Procedure – Alarm NS Y/N N Allows proving of Non Serious Alarm Output
Man Procedure – Alarm S Y/N N Allows proving of Serious Alarm Output
Screen Ref –19
TEXT OPTION FACTORY SET DESCRIPTION
Man Procedure – Compressor 1 Y/N N Allows Manual Running of Compressor 1
Man Procedure – Compressor 2 Y/N N Allows Manual Running of Compressor 2
Screen Ref –20
TEXT OPTION FACTORY SET DESCRIPTION
Man Procedure – AOUT 1 0.00V 0.00V Allows Manual Setting of Analogue Output 1
Man Procedure – AOUT 2 0.00V 0.00V Allows Manual Setting of Analogue Output 2
Screen Ref –21
TEXT OPTION FACTORY SET DESCRIPTION
Man Procedure – AOUT 3 0.00V 0.00V Allows Manual Setting of Analogue Output 3
Man Procedure – AOUT 4 0.00V 0.00V Allows Manual Setting of Analogue Output 4
Screen Ref –22
TEXT OPTION FACTORY SET DESCRIPTION
Humidifier
Auto Drain Enable Y/N N To enable automatic humidifier drain
Drain Interval 00Hr 05Hr From 00 to 10Hr
Drain Length 000Sec 120Sec From 000 to 240Sec
Screen Ref –23
TEXT OPTION FACTORY SET DESCRIPTION
Disable Humidifier Y/N N Allows Disabling of Humidifier
Manual Drain Y/N N Allows Manual Humidifier Drain of 120 Seconds
Notes :
1. With unit on/off set as off, screens 16 – 21 are available for manual enable of all analogue & digital outputs.

∆DELTA2 Microprocessor Controller. System Programming Manual.
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INPUTS / OUTPUTS SECTION
The screens below appears when the “Prg” button is pressed & using the arrow up & arrow down buttons until you
get to INPUTS / OUTPUTS.This section is not password protected.
TABLE NO. 7
Screen Ref -1
TEXT OPTION FACTORY SET DESCRIPTION
Analog Input Return Air Temp N/A N/A Active Readout of I/O
Analog Input Return Air Humidity. N/A N/A Active Readout of I/O
Screen Ref -2
TEXT OPTION FACTORY SET DESCRIPTION
Analog Input Supply Air Temp N/A N/A Active Readout of I/O
Analog Input Entering Water Temp N/A N/A Active Readout of I/O
Analog Input Leaving Water Temp N/A N/A Active Readout of I/O
Screen Ref -3
TEXT OPTION FACTORY SET DESCRIPTION
Analog Input External Air N/A N/A Active Readout of I/O
Screen Ref -4
TEXT OPTION FACTORY SET DESCRIPTION
Digital Inputs N/A N/A Active Readout of I/O
Screen Ref -5
TEXT OPTION FACTORY SET DESCRIPTION
Analog Output – Cool Valve N/A N/A Active Readout of I/O
Analog Output – Heat Valve N/A N/A Active Readout of I/O
Screen Ref -6
TEXT OPTION FACTORY SET DESCRIPTION
Analog Outputs – Freecool Valve N/A N/A Active Readout of I/O
Screen Ref – 7
TEXT OPTION FACTORY SET DESCRIPTION
Digital Outputs N/A N/A Active Readout of I/O
Screen Ref – 8
TEXT O
PTION F ACTORY SET D ESCRIPTION
Humidifier Contactor N/A N/A On or Off
Humidifier Fill Valve N/A N/A On or Off
Humidifier Drain Valve N/A N/A On or Off
Screen Ref – 9
TEXT OPTION FACTORY SET DESCRIPTION
Humidifier Measured Current N/A N/A Active Readout of Current
Humidifier Target Current N/A N/A Active Readout of Current
Humidifier Nominal Current N/A N/A Active Readout of Current
Screen Ref – 10
TEXT OPTION FACTORY SET DESCRIPTION
Humidifier Water Level N/A N/A Normal, High
Humidifier Electrical Conductivity N/A N/A xxxx microsiemens
Humidifier Production N/A N/A xx.x Kg/Hr
Screen Ref – 11
Humidifier Cylinder Worn N/A N/A Yes or No
Humidifier Cylinder Mode N/A N/A Start, Run, Full, Foam, Low Current & High Current
Humidifier Cylinder Status N/A N/A Evaporating, Draining, Filling

∆DELTA2 Microprocessor Controller. System Programming Manual.
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CLOCK SECTION
The screens below appears when the “Prg” button is pressed & using the arrow up & arrow down buttons until you
get to CLOCK.This section is password protected and the relevant password is required for access to some screens.
To enter the password the “up” and “down” & “ enter” arrow keys are used.
TABLE NO. 8
Screen Ref -1
TEXT OPTION FACTORY SET DESCRIPTION
Regulation Clock - Hour See Note See Note Sets Clock Hours & Minutes
Regulation Clock - Date See Note See Note Sets Clock Date in format MM/DD/YY
Regulation Clock - Day See Note See Note Mo, Tu, We, Th, Fr, Sa, Su
Screen Ref -2
TEXT OPTION FACTORY SET DESCRIPTION
Clock Password 0000 0000 Password Required
Screen Ref -3
TEXT OPTION FACTORY SET DESCRIPTION
Auto Temp Set Point Variation Y/N N Enables Automatic Temperature Set Point Variation
Screen Ref -4
TEXT OPTION FACTORY SET DESCRIPTION
Time Zone N. 1 – Start Hour 00.00 00.00 Time Zone No. 1 Temperature Set Point Start Hour
Temperature Set Point 00.0 C 00.0 C Time Zone No. 1 Temperature Set Point
Screen Ref -5
TEXT O
PTION F ACTORY SET D ESCRIPTION
Time Zone N. 2 – Start Hour 00.00 00.00 Time Zone No. 2 Temperature Set Point Start Hour
Temperature Set Point 00.0 C 00.0 C Time Zone No. 2 Temperature Set Point
Screen Ref -6
TEXT OPTION FACTORY SET DESCRIPTION
Time Zone N. 3 – Start Hour 00.00 00.00 Time Zone No. 3 Temperature Set Point Start Hour
Temperature Set Point 00.0 C 00.0 C Time Zone No. 3 Temperature Set Point
Screen Ref – 7
TEXT OPTION FACTORY SET DESCRIPTION
Time Zone N. 4 – Start Hour 00.00 00.00 Time Zone No. 4 Temperature Set Point Start Hour
Temperature Set Point 00.0 C 00.0 C Time Zone No. 4 Temperature Set Point
Screen Ref – 8
TEXT OPTION FACTORY SET DESCRIPTION
Auto Humidity Set Point Variation Y/N N Enables Automatic Humidity Set Point Variation
Screen Ref – 9
TEXT O
PTION F ACTORY SET D ESCRIPTION
Time Zone N. 1 – Start Hour 00.00 00.00 Time Zone No. 1 Humidity Set Point Start Hour
Humidity Set Point 00.0 % 00.0 % Time Zone No. 1 Humidity Set Point
Screen Ref – 10
TEXT OPTION FACTORY SET DESCRIPTION
Time Zone N. 2 – Start Hour 00.00 00.00 Time Zone No. 2 Humidity Set Point Start Hour
Humidity Set Point 00.0 % 00.0 % Time Zone No. 2 Humidity Set Point
Screen Ref – 11
TEXT OPTION FACTORY SET DESCRIPTION
Time Zone N. 3 – Start Hour 00.00 00.00 Time Zone No. 3 Humidity Set Point Start Hour
Humidity Set Point 00.0 % 00.0 % Time Zone No. 3 Humidity Set Point
Screen Ref – 12
TEXT OPTION FACTORY SET DESCRIPTION
Time Zone N. 4 – Start Hour 00.00 00.00 Time Zone No. 4 Humidity Set Point Start Hour
Humidity Set Point 00.0 % 00.0 % Time Zone No. 4 Humidity Set Point

∆DELTA2 Microprocessor Controller. System Programming Manual.
15
ALARMS SECTION
Notes :
1. Please note that the ALARMS generated will depend on the unit type & configuration.
2. All alarms can be set as Serious or Non-Serious in the user section of the controller. All serious alarms will shut
down the unit
3. A05 & A09 are deemed Serious alarms by default. This can be changed by the user.
4. A06 is deemed non serious by default to keep a slave module of a duplex unit in the event of a master air flow
alarm only
5. A35 & A 08 will always disable the Humidifier whether set as Serious or Non-Serious
6. There may also be some additional alarms which are order specific.
ALARM LIST
AL 01 Compressor 1 HP / Thermal Overload
AL 02 Compressor 2 HP / Thermal Overload
AL 03 Compressor 1 LP
AL 04 Compressor 2 LP
AL 05 Air Flow Alarm (Serious Alarm)
AL 06 Air Flow Alarm – Slave (Serious Alarm)
AL 07 Alarm Electric Reheat High Temp Trip
AL 08 Condensate Pump / High Water Level
AL 09 Smoke/Fire (Serious Alarm)
AL 10 Alarm Air Filter
AL 11 High Temperature Alarm
AL 12 Low Temperature Alarm
AL 13 High Humidity Alarm
AL 14 Low Humidity Alarm
AL 15 High Entering Water Temperature
AL 16 Low Entering Water Temperature
AL 17 Compressor 1 Run Hours
AL 18 Compressor 2 Run Hours
AL 19 Fan Run Hours
AL 20 Return Air Temperature Probe Fault Or Offline
AL 21 Entering Water Temperature Probe Fault Or Offline
AL 22 External Air Temperature Probe Fault Or Offline
AL 23 Supply Air Temperature Probe Fault Or Offline
AL 24 Return Air Humidity Probe Fault Or Offline
AL 25 Leaving Water Temperature Probe Fault Or Offline
AL 26 High Leaving Water Temperature
AL 27 Low Leaving Water Temperature
AL 28 High Current Into Humidifier
AL 29 Lack Of Water Into Humidifier
AL 30 Lack Of Current Into Humidifier
AL 31 Alarm Clock
AL 32 Spare / Custom
AL 33 Spare / Custom
AL 34 Spare / Custom
AL 35 Water Under Floor
AL 36 Loss of Water Flow Alarm