Page 9
In
dex
Application Description
Send
Heartbeat
Functional Block
SNVT
In
dex
Application Description
Send
Heartbeat
Functional Block
TypeName
51 nviPriCoolEnable SNVT_switch dischargeAirCont — Used to disable compressor operation.
52 nviPriHeatEnable SNVT_switch dischargeAirCont — Used to disable primary heating operation.
53 nviSpaceDehumSP SNVT_lev_percent dischargeAirCont — Sets the dehumidification RH setpoint.
54 nvoDischAirTemp SNVT_temp_p sccRooftop No
Reports the discharge air temperature.
Supported range: -8 to 131 degrees Fahrenheit.
55 nvoUnitStatus1 SNVT_hvac_status dischargeAirCont Yes
Reports the controller status. Same as nvoUnitSta
tus in sccRooftop function block.
56 nvoEffDATempSP SNVT_temp_p dischargeAirCont Yes
Reports the effective discharge air temperature set-
point.
57 nvoDuctStatPress SNVT_press_p dischargeAirCont Yes
Reports the duct static pressure.
Supported range: 0 to 1245 Pa.
58 nvoSupFanStatus SNVT_switch dischargeAirCont Yes Reports unit blower speed.
59 nvoExhFanStatus SNVT_switch dischargeAirCont Yes Reports exhaust fan speed.
60 nvoEconEnabled SNVT_switch dischargeAirCont Ye s Reports free−cooling status of economizer.
61 nvoBldgStatPress SNVT_press_p dischargeAirCont Yes
Reports the building static pressure.
Supported range: -124.5 to +124.5 Pa.
62 nvoLocalOATemp SNVT_temp_p dischargeAirCont Yes
Reports locally measured outdoor temperature.
Supported range: -30 to +130 degrees Fahrenheit.
63 nvoRATemp SNVT_temp_p dischargeAirCont Yes
Reports effective return air temperature. Supported
range: -8 to +163 degrees Fahrenheit.
64 nvoEffSpaceDHSP SNVT_press_p dischargeAirCont Yes
Reports effective relative humidity setpoint for de-
humidification.
65 nvoDehumidifier SNVT_switch dischargeAirCont Ye s Reports status of dehumidification operation.
66 nciFanOperation SCPTfanOperation Virtual Functional Block —
Sets the operation mode for the unit blower during
occupied state.
67 nciSupAFSP UNVT_SupAF_Stps Virtual Functional Block —
Sets the default Airflow settings for a SmartAirflow™
enabled RTU in lit/sec units. For valid ranges please
refer to the Appendix A.
68 nviHCSetpoints SNVT_temp_setpt lennox —
Valid ranges are 40-to-95 F (COOLING). The cool
ing setpoints must be above the corresponding
heating setpoint by the unit's Autochangeover
Deadband (ECTO 6.15, 3 F default). The Standby
setpoints are not used by the Application
69 nvoHCSetpoints SNVT_temp_setpt lennox No
Reports zone temperature setpoints. Standby set-
points are not used and are returned with the unoc-
cupied values.
70 nvoCurrentAlarms UNVT_currentAlarms lennox Yes Reports currently active alarms codes.
71 nvoRecentEvent_1 UNVT_event lennox Yes
Reports most recent alarm code with time of occur-
rence.
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