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ED 15103-6 • MICROTECH III WSHP UNIT CONTROLLER 44 www.DaikinApplied.com
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Table 20: Network Configuration Properties Inputs (NCIs) - SmartSource Single and Two Stage Compressor and Enfinity
Large Two Compressor, Continued
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)
Hydronic Setpoint
Differential
nciHydronicDiff UCPThydronicDiff
2 to 10ºF
1.11 to 5.56ºC
Default:
5ºF / 2.78ºC
No
Sets the hydronic heating and cooling hysteresis that
determines the Effective OFF setpoints.
Interstage OFF Timer nciIntStgOffTmr UCPTintStgOffTmr
120 to 1200 sec
Default: 0
No
A countdown timer that defines the minimum period of time
between turn-off of the subsequent heating and cooling
stages. Presently the Interstage OFF timer is not supported
by the unit controller.
Interstage ON Timer nciIntStgOnTmr UCPTintStgOnTmr
120 to 1200 sec
Default: 300 sec
No
A countdown timer that defines the minimum period of time
between turn-on of the subsequent heating and cooling
stages.
Local Bypass Time
Setpoint
nciBypassTime
(4)
SCPTbypassTime
0, 30 to 120 min
Default: 120 min
No
Defines the amount of time that the unit can be in the Bypass
mode, which is initiated by the Timed Override button.
Pressing the Timed Override button 4-9 seconds sets the
bypass timer to the maximum nciBypassTime value. The
value of 0 disables this feature.
Location nciLocation SCPTlocation 32 Characters No Provides descriptive physical location information for the unit.
Long Range Setpoint
Adjust Maximum
nciSptAdjMax
(5)
UCPTsptAdjMax
55 to 95ºF
12.77 to 35ºC
Default:
95°F / 35°C
No
Specifies the maximum allowed value of the nvoSetpoint
Long Range Setpoint Adjust. The nciSptAdjMax must be
greater or equal to the nciSptAdjMin value.
Long Range Setpoint
Adjust Minimum
nciSptAdjMin
(6)
UCPTsptAdjMin
55 to 95ºF
12.77 to 35ºC
Default:
55°F / 12.78°C
No
Specifies the minimum allowed value of the nvoSetpoint Long
Range Setpoint Adjust. The nciSptAdjMin must be less than
or equal to the nciSptAdjMax value.
Low Leaving Water
Temp Differential
nciLowLwtDiff UCPTlowLwtDiff
2 to 15ºF
1.11 to 8.34ºC
Default:
7°F / 3.89°C
No
Specifies the Low Leaving Water Temperature (LWT)
Differential setpoint used to calculate the Freeze Fault
setpoint. nciLowLwtDiff is added to the selected Compressor
Low Suction Temp Protection SP (nciLowTempProt or
nciLowTempProtGL).This determines the Freeze Fault
temperature, which is based on LWT. After the Freeze
Fault condition has been activated, the Freeze Fault alarm
must be manually reset when the LWT is above the lockout
temperature for the alarm to clear.
Low EWT Setpoint for
Glycol
nciLowEwtSptGly UCPTlowEwtSptGly
15 to 40ºF
-9.44 to 4.45ºC
Default:
28°F / -2.22°C
No
Value of the Low Entering Water Temperature (EWT) setpoint
when using glycol loop fluid. The compressor(s) are disabled
in Heating mode when the low EWT condition exists. Unit
controller configuration jumper JP3 must be shorted to select
glycol as the loop fluid type. The hysteresis differential is
fixed at 2ºF.
Low EWT Setpoint for
Water
nciLowEwtSptWtr UCPTlowEwtSptWtr
40 to 65ºF
4.44 to 18.34ºC
Default:
55°F / 12.78°C
No
Value of the low entering water temperature setpoint when
using water loop fluid. The compressor(s) are disabled in
the heating mode when the low EWT condition exists. Unit
controller configuration jumper JP3 must be open to select
Water as the loop fluid type. The hysteresis differential is
fixed at 2ºF.
Minimum Send Time nciMinOutTm SCPTminSendTime
0 to 6553.4 sec
Default: 0
(Disabled)
No
Defines the minimum period of time between automatic
network variable output transmissions. It limits network traffic
when output network variables are frequently changing. The
value of 0 disables the timer.
Supported Variables
• nvoBrownout
• nvoDischAirTemp
• nvoEWT
• nvoLocalSpaceTmp
• nvoLWT
• nvoSpaceTemp
• nvoSuctionTemp1
• nvoSuctionTemp2 (SS2C software only)
Occupied Setpoint
Differential
nciOccDiff UCPToccDiff
1 to 5°F
0.55 to 2.78°C
Default:
1ºF / 0.55ºC
No
Used to set the Occupied and Standby setpoint hysteresis
that determine the Effective OFF setpoints.
Interaction Rules
• nciOccDiff < (occupied_cool – occupied_heat)
• nciOccDiff < (standby_cool – standby_heat)