Controller Operation
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IOM 1242-8 • PATHFINDER
®
MODEL AWV CHILLERS
Table 38: Unit Test Mode Set Points
Description
Default
Range
Unit Test Mode
Off
Off, On
Test Unit Alarm Output
Off
Off, On
Test Evaporator Pump Output 1
Off
Off, On
Test Evaporator Pump Output 2
Off
Off, On
NOTE:
Unit test mode set points can be changed only when the unit mode is Test. When the unit mode is no longer Test, all unit
test mode set points will be changed back to the ‘off’ values.
Table 39: Administration and Service Support
Description
Default
Range
Unit G.O. Number
“Enter Data”
Alphanumeric string of up to 16 characters
Unit Serial Number
“Enter Data”
Alphanumeric string of up to 20 characters
Next Maintenance Month
January
January through December
Next Maintenance Year
2009
2009 - 2100
Service Support Reference
999-999-9999
Any 10 digit phone number
Controller Time
From Controller Time clock
00:00:00 to 23:59:59
Controller Date
From Controller Time clock 1/1/2000 to 12/31/2050
UTC Difference
-60 minutes
-3276 to 32767 minutes
Daylight Savings Time Enable
Yes
No, Yes
Daylight Savings Time Start Month
March
January through December
Daylight Savings Time Start Week
2nd Week
1st through 5th Week
Daylight Savings Time End Month
November
January through December
Daylight Savings Time End Week
1st Week
1st through 5th Week
Operator Password Disable
Off
Off, On
Apply Changes
No
No, Yes - Controller should automatically reboot when “Yes”
Active Alarm Clear
Off
Off, On
Alarm Log Clear
No
No, Yes
Alarm Log Export to SD Card
No
No, Yes
Power Restore Event Log - Day Selection
Current
Current, 2nd Day, 3rd Day, 4th Day, 5th Day, 6th Day, 7th Day
Save Settings To SD Card
No
No, Yes
Restore Settings From SD Card
No
No, Yes
Restore Default Settings
No
No, Yes
Display Units
English
English, Metric
I/O Module Address (for reading telegram errors) 0
0 to 255
Reset Telegram Error Counter
Passive
Passive, Active
Dynamic Set Point Ranges
The following settings have different ranges of adjustment
based on other settings.
Table 40: Cool LWT Set Point Ranges
Evaporator Glycol
Range
No
4.44 to 21.12°C (40 to 70°F)
Yes
-3.89 to 21.12°C (25 to 70°F)
Table 41: Evaporator Fluid Freeze
Evaporator Glycol
Range
No
1.1 to 6°C (34 to 42.8°F)
Yes
-28.89 to 6°C (-20 to 42.8°F)
Table 42: Low Ambient Lockout Default
Waterside Economizer Option
Default
No
0 °C (32 °F)
Yes
-28.89 °C (-20 °F)
Table 43: Low Ambient Lockout Range
Condenser Fan VFD
Range
None
0 to 15°C (32 to 59°F)
1st Fan VFD, All Fan VFD
-28.89 to 15°C (-20 to 59°F)
NOTE:
Unless Low Ambient Lockout is disabled.
Table 44: Low Evaporator Pressure Unload
Evaporator Glycol
Range
No
150 to 510 kPa (21.8 to 74 psi)
Yes
0 to 510 kPa (0 to 74 psi)
