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ED 15103-6 • MICROTECH III WSHP UNIT CONTROLLER
Table 20:
Network Configuration Properties Inputs (NCIs) - SmartSource Single and Two Stage Compressor and Enfinity
Large Two Compressor
Point Name
l
on
W
orks
Variable
(NV Index)
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: 400
No
Detects a unit controller brownout condition. A
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
No
Specifies the time delay between the Low Pressure input and
compressor(s) 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 Tdemperature SP (nciLowTempProt or
nciLowTempProtGL) to determine the setting at which the
alarm clears.
Compressor Low
Suction Temp
Protection SP for
Glycol
nciLowTempProtGL
UCPTlowTempProtGL
0 to 50°F
-17.78 to 10°C
Default:
6.5ºF/-14.16ºC
No
Temperature at which a Compressor Low Suction alarm
occurs in the Heating mode when the loop fluid is glycol.
nciLowTempProtGL is enabled by the unit controller JP3
jumper in the shorted position, which selects glycol.
nciLowTempProtGL does not apply to the dehumidification
and cooling modes, which use a fixed 28ºF low temp
threshold regardless of the loop fluid type.
Compressor Low
Suction Temp
Protection SP for
Water
nciLowTempProt
UCPTlowTempProt
0 to 50°F
-17.78 to 10°C
Default:
28ºF/-2.22ºC
No
Temperature at which a Compressor Low Suction alarm
occurs in the Heating mode when the loop fluid is water.
nciLowTempProt is enabled by the unit controller JP3 jumper
in the open position, which selects water.
nciLowTempProt does not apply to the dehumidification and
cooling modes, which use a fixed 28ºF low temp threshold
regardless of the loop fluid type.
Compressor
Minimum OFF Timer
nciMinCompOffTmr
UCPT
minCompOffTmr
0 to 1200 sec
Default:* 360 sec
No
A countdown timer that defines the minimum period of time a
compressor must remain OFF before it is allowed to turn ON
again.
*Default value of 180 applies to the following:
• SmartSource (Series2) v5.0
•
Enfinity Large Two Compressor (SS2C) v1.0
Compressor
Minimum ON Timer
nciMinCompOnTmr
UCPT
minCompOnTmr
120 to 1200 sec
Default: 180 sec
No
A countdown timer that defines the minimum period of time a
compressor must remain ON before it is allowed to turn OFF
again.
Fourth Stage Heating
Setpoint Differential
nciStg4SptDiff
UCPTstg4SptDiff
1 to 10°F
0.55 to 5.56°C
Default:
6ºF / 3.33ºC
No
Determines the Fourth Stage Heating ON setpoints from the
Third Stage ON setpoints for SmartSource (Series2) units
controlled by room sensors.
HVAC Unit Type
Identifier
nciHVACType
SCPThvacType
0 to 9
Default: 3
No
Defines the primary application and equipment type for the
unit controller.
Do not modify this configuration property.
Supported Values
0 = HVT_GENERIC
1 = HVT_FAN_COIL
2 = HVT _VAV
3 = HVT_HEAT_PUMP (Default)
4 = HVT_ROOFTOP
5 = HVT_UNIT_VENT
6 = HVT_CHILL_CEIL
7 = HVT_RADIATOR
8 = HVT_AHU
9 = HVT_SELF_CONT
Hydronic Cooling ON
Setpoint
nciHydroClgOnSpt
UCPThydroClgOnSpt
50 to 70ºF
10 to 21.12ºC
Default:
55ºF / 12.78ºC
No
Specifies the Entering Water Temperature (EWT) Hydronic
Cooling setpoint for units with a waterside economizer.
Hydronic cooling is enabled if the EWT is below the value of
nciHydroClgOnSpt. It is allowed to operate in conjunction
with compressor cooling. If the EWT drops below the fixed
value of 35ºF, hydronic cooling is disabled.
Hydronic Heating ON
Setpoint
nciHydroHtgOnSpt
UCPThydroHtgOnSpt
70 to 158ºF
21.11 to 70ºC
Default:*
90ºF / 32.22ºC
No
Specifies the Entering Water Temperature (EWT) Hydronic
Heating setpoint for units with a hydronic heating coil.
Hydronic heating is not allowed to operate in conjunction with
compressor heating.
*Default value: 70ºF / 21.12ºC
• SmartSource (Series2) v6.1 and older
•
Enfinity Large Two Compressor (SS2C) v1.1 and older
