ED 15103-6 • MICROTECH III WSHP UNIT CONTROLLER 30 www.DaikinApplied.com
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Table 16: Network Variable Outputs (NVOs) - Enfinity Single Stage Compressor, Continued
Point Name
l
on
W
orks
Variable
(NV Index
2
)
SNVT Type
(SNVT Index)
Range/
Default
(in Units)
Heart-
beat
Description
Network Variable Outputs (NVOs)
Unit Status Output
nvoUnitStatus
(15)
SNVT_hvac_status
(112)
No
Reports the unit status. It combines the operating mode,
the capacity of heating and cooling, and any alarms that are
present in the object. The in_alarm member reports the highest
priority current alarm identifier.
Unit Status Fields
• mode: (see supported modes below)
• heat_output_primary: 0 to 100%
• heat_output_secondary: 0 to 100%
• cool_output: 0 to 100%
• econ_output: 0 to 100%
• fan_output: 0 to 100%
•
in_alarm: (see alarm identifiers below)
Supported Modes
1 = HVAC_HEAT (Heating Mode)
3 = HVAC_COOL (Cooling Mode)
6 = HVAC_OFF (Inactive Control)
9 = HVAC_FAN_ONLY (Fan Only Mode)
14 = HVAC_DEHUMID (Dehumidification Mode)
Alarm Identifiers
0 = No Alarms
1 = Invalid Equipment Config
2 = Emergency Shutdown
3 = Freeze Fault
4 = EWT Sensor Fail
5 = Room Temp Sensor Fail
6 = IO Expansion Board Com Fail
7 = Condensate Overflow
8 = Outdoor Air Temp Sensor Fail
9 = DAT Sensor Fail
10 = BB Serial EEPROM Corrupted
1. Analog Null (0x7FFF) is a discrete temperature value of 621.806ºF/327.67ºC. Its purpose is to indicate a sensor failure condition or when the unit controller is not
using that temperature value.
2. The Network Variable (NV) index number is a unique identifier for certain
L
on
W
orks
variables. Some BAS companies use this numeric value instead of text to
reference these variables. The NV index number can also be found in the XIF file.
3. After Receive Heartbeat is enabled, this variable reverts to the default (non-override) value if it is not refreshed often enough through a network command or if
communication is disabled (i.e. the device is disabled or is offline).
Table 17:
Network Configuration Properties Inputs (NCIs) - Enfinity Single Stage Compressor
Point Name
l
on
W
orks
Variable
(NV Index
2
)
SNVT Type
(SNVT Index)
Range/
Default
(in Units)
Heart-
beat
Description
Network Configuration Property Inputs (NCIs)
Brownout Reference
Setpoint
nciBrownoutRef
UCPTbrownoutRef
25 to 1023 counts
Default: 500
No
Detects a unit controller brownout condition. Brownout
condition occurs when nvoBrownout < 80% of
nciBrownoutRef, and clears when nvoBrownout > 90% of
nciBrownoutRef.
Only perform the calibration procedure if the unit controller
24VAC voltage is within normal operating parameters. A
password of 1023 is required
.
Compressor Low
Pressure Alarm Delay
nciLowPresAlmDly
UCPTlowPresAlmDly
0 to 120 sec
Default: 30 sec
Unit controller
software v2.9 and
older:
0 to 99 sec
No
Specifies the time delay between the compressor(s) low
pressure input and alarm generation.
Compressor Low
Suction Temperature
Protection Differential
nciLowTmpProtDif
UCPTlowTmpProtDif
2 to 15°F
1.11 to 8.34°C
Default:
8°F / 4.44°C
No
nciLowTmpProtDif is added to the selected Compressor
Low Suction Temperature SP (nciLowTempProt or
nciLowTempProtGL) to determine the setting at which the
alarm clears.
1. Analog Null (0x7FFF) is a discrete temperature value of 621.806ºF/327.67ºC. Its purpose is to indicate a sensor failure condition or when the unit controller is not
using that temperature value.
2. The Network Variable (NV) index number is a unique identifier for certain
L
on
W
orks
variables. Some BAS companies use this numeric value instead of text to
reference these variables. The NV index number can also be found in the XIF file.
3. After Receive Heartbeat is enabled, this variable reverts to the default (non-override) value if it is not refreshed often enough through a network command or if
communication is disabled (i.e. the device is disabled or is offline).
