Data Aire DAP III LonWorks Protocol Integration Information
Data Aire DAP III LonWorks Protocol Integration Information
Data Aire DAP III LonWorks Protocol Integration Information
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<strong>Data</strong> <strong>Aire</strong> <strong>DAP</strong> TM <strong>III</strong><br />
<strong>LonWorks</strong> <strong>Protocol</strong> <strong>Integration</strong><br />
<strong>Information</strong><br />
<strong>Data</strong> <strong>Aire</strong>, Inc.<br />
230 West BlueRidge Avenue<br />
Orange, California 92865<br />
Document Number 600-000-685<br />
Feb 2011<br />
Revision 2.0
Table of Contents<br />
1 Introduction ............................................................................................................................ 4<br />
1.1 Overview ............................................................................................................................ 4<br />
1.2 References .......................................................................................................................... 4<br />
2 Hardware Requirement ........................................................................................................ 4<br />
2.1 Required Network Card ..................................................................................................... 4<br />
2.2 Lontalk Network Card Installation .................................................................................... 5<br />
2.3 Network Wiring ................................................................................................................. 5<br />
3 XIF file ..................................................................................................................................... 6<br />
4 Network Variable Summary ............................................................................................... 6<br />
4.1 Status .................................................................................................................................. 6<br />
4.2 Read/Write Configuration .................................................................................................. 7<br />
4.3 Control ............................................................................................................................... 7<br />
5 Network Variables Description ......................................................................................... 8<br />
5.1 nvoReturnTemp ................................................................................................................. 8<br />
5.2 NvoDiscTemp (optional) ................................................................................................... 8<br />
5.3 NvoWaterTemp (Optional)................................................................................................ 8<br />
5.4 nvoHumidity ...................................................................................................................... 8<br />
5.5 nvoCoolStagesOn .............................................................................................................. 8<br />
5.6 nvoHeatStagesOn ............................................................................................................... 8<br />
5.7 nvoHumidifying ................................................................................................................. 8<br />
5.8 nvoDehumidifying ............................................................................................................. 9<br />
5.9 nvoValve (Chilled Water Unit Only) ................................................................................. 9<br />
5.10 nvoHValve (Optional) ....................................................................................................... 9<br />
5.11 nvoHiTempHistory ............................................................................................................ 9<br />
5.12 nvoLoTempHistory ............................................................................................................ 9<br />
5.13 nvoHiHumHistory.............................................................................................................. 9<br />
5.14 nvoLoHumHistory ............................................................................................................. 9<br />
5.15 nvoCoolUtlz ....................................................................................................................... 9<br />
5.16 nvoHeatUtlz ....................................................................................................................... 9<br />
5.17 NvoChilledUtlz (Chilled Water Unit Only) ..................................................................... 10<br />
5.18 nvoHumidUtlz.................................................................................................................. 10<br />
5.19 nvoComp1Runtime .......................................................................................................... 10<br />
5.20 nvoComp2Runtime .......................................................................................................... 10<br />
5.21 nvoComp3Runtime .......................................................................................................... 10<br />
5.22 nvoComp4Runtime .......................................................................................................... 10<br />
5.23 nvoHeat1Runtime ............................................................................................................ 10<br />
5.24 nvoHeat2Runtime ............................................................................................................ 10<br />
5.25 nvoHeat3Runtime ............................................................................................................ 10<br />
5.26 nvoHumidRuntime ........................................................................................................... 10<br />
5.27 nvoFanRuntime ................................................................................................................ 11<br />
5.28 nvoCondRuntime ............................................................................................................. 11<br />
5.29 nvoDehumRuntime .......................................................................................................... 11<br />
Document 600-000-685 2
5.30 NvoESaverRuntime (Optional)........................................................................................ 11<br />
5.31 NvoChillRuntime (Chilled Water Unit Only).................................................................. 11<br />
5.32 nvoAlarm ......................................................................................................................... 11<br />
5.33 nviFireLimit ..................................................................................................................... 12<br />
5.34 nviHiTempLimit .............................................................................................................. 12<br />
5.35 nviLoTempLimit .............................................................................................................. 13<br />
5.36 nviLoDiscLimit (Optional) .............................................................................................. 13<br />
5.37 NviWaterLimit (Optional) ............................................................................................... 13<br />
5.38 nviHiHumidLimit ............................................................................................................ 13<br />
5.39 nviLoHumidLimit ............................................................................................................ 13<br />
5.40 nviHumDeadband ............................................................................................................ 13<br />
5.41 nviHumSetpoint ............................................................................................................... 13<br />
5.42 nviTempDeadband ........................................................................................................... 13<br />
5.43 nviTempSetpoint .............................................................................................................. 13<br />
5.44 nviInhibitCool .................................................................................................................. 13<br />
5.45 nviInhibitHeat .................................................................................................................. 14<br />
5.46 nviInhibitHumid ............................................................................................................... 14<br />
5.47 nviInhibitDehum .............................................................................................................. 14<br />
5.48 nviInhibitFan .................................................................................................................... 14<br />
5.49 nviStandby ....................................................................................................................... 14<br />
Document 600-000-685 3
1 Introduction<br />
1.1 Overview<br />
This document defines the Network Variables used by the <strong>Data</strong> <strong>Aire</strong> <strong>LonWorks</strong> protocol SNVT<br />
Only of the <strong>Data</strong> Air Processor <strong>III</strong> (<strong>DAP</strong> <strong>III</strong>) and the information of the <strong>Data</strong> <strong>Aire</strong> LonTalk<br />
Communication network card for LonTalk integration.<br />
1.2 References<br />
Introduction to the <strong>LonWorks</strong> System Version 1.0, Echelon® Corporation, 1999<br />
ShortStack User’s Guide Version 2, Echelon® Corporation, March 2002<br />
LonMark® SNVT Master List, Version 12, June 2003<br />
2 Hardware Requirement<br />
2.1 Required Network Card<br />
2.1.1 The <strong>LonWorks</strong> protocol interface requires a <strong>Data</strong> <strong>Aire</strong> LonTalk communication network<br />
card to be installed into the <strong>DAP</strong> <strong>III</strong> panel. The LontalK card part number is 160-400-384.<br />
See figure 1 and 2 for card details.<br />
BOARD CONNECTOR<br />
Figure 1: Front side of the <strong>Data</strong> <strong>Aire</strong> LonTalk Communication Network card<br />
Tx and Rx LEDs<br />
SERVICE BUTTON<br />
Figure 2: Back side of the <strong>Data</strong> <strong>Aire</strong> LonTalk Communication Network card<br />
Document 600-000-685 4
2.2 LonTalk Network Card Installation<br />
IMPORTANT NOTE: The <strong>DAP</strong> <strong>III</strong> panel supports one network connection at a time therefore only<br />
one type of the network card can be installed.<br />
2.2.1 For <strong>LonWorks</strong> interface, plug a LonTalk communication network card to the<br />
Communication Header J1 of the <strong>DAP</strong> <strong>III</strong> Display board. See figure 3 below for the <strong>DAP</strong> <strong>III</strong><br />
Display board with a LonTalk card installed.<br />
Before installing the network card, go to Menu 6-1 – Unit & Network ID in Group Menu 6 –<br />
Network to set the unit network ID number. Go to Menu 6-2 –Network <strong>Protocol</strong> to<br />
configure to <strong>LonWorks</strong>. Menu 6-2 is locked menu; refer to the <strong>DAP</strong> <strong>III</strong> Operation Manual<br />
for the procedure of how to unlock this menu. Next step is turning power off, plug the<br />
LonTalk card to the communication port J1 on the Display module of the <strong>DAP</strong> <strong>III</strong> panel.<br />
Turn the <strong>DAP</strong> <strong>III</strong> panel back on; if the <strong>DAP</strong> <strong>III</strong> panel recognizes the Lontalk card it will<br />
display the card name during the self-test. It is recommended to reset the <strong>DAP</strong> <strong>III</strong> panel<br />
after changing network protocol or unit ID number.<br />
Tx and Rx LED<br />
Lon+<br />
Lon_<br />
Communication Header J1<br />
LonTalk Communication card<br />
<strong>LonWorks</strong> TP/FT-10 Network Wiring<br />
C ti<br />
2.3 Network Wiring<br />
Figure 3: <strong>DAP</strong> <strong>III</strong> Display Board With a LonTalk Network Card<br />
2.3.1 <strong>Data</strong> <strong>Aire</strong> LonTalk Network card complies with Lonworks TP/FT-10 network connections.<br />
The 18 AWG or 22 AWG shielded, twisted pair cable is recommended. The network wiring<br />
should be wired in the multidrop fashion. See Figure 3 above for the <strong>DAP</strong> <strong>III</strong> Lonworks<br />
network wiring terminations.<br />
Document 600-000-685 5
3 XIF file<br />
3.1 The XIF file for <strong>Data</strong> <strong>Aire</strong> <strong>DAP</strong> <strong>III</strong> Lonworks interface can be downloaded from <strong>Data</strong> <strong>Aire</strong><br />
website at: http://www.dataaire.com/inside.cfm?p=downloads2&e=<strong>DAP</strong>%20<strong>III</strong> .<br />
Recommend using this file when commissioning a <strong>Data</strong> <strong>Aire</strong> unit Lonworks<br />
interface.<br />
4 Network Variable Summary<br />
4.1 Status<br />
Network Variable Network Variable Type Description<br />
nvoReturnTemp SNVT_temp_p Current Return Temperature<br />
nvoDiscTemp SNVT_temp_p Optional Current Discharge<br />
Temperature- Optional discharge air<br />
sensor required<br />
nvoWaterTemp SNVT_temp_p Optional Current Chilled Water<br />
Temperature – Optional chilled water<br />
temperature sensor required.<br />
nvoHumidity SNVT_lev_percent Current Humidity<br />
nvoCoolStagesOn SNVT_count Cooling Stages on - DX unit only<br />
nvoHeatStagesOn SNVT_count Heating Stages on<br />
nvoHumidifying SNVT_switch Currently Humidifying<br />
nvoDehumidifying SNVT_switch Currently Dehumidifying<br />
nvoValve SNVT_lev_cont Water Valve percent open. This applies<br />
to chilled water unit only<br />
nvoHValve SNVT_lev_cont Optional Humidifier Valve percent<br />
open. Optional modulating humidifier<br />
required<br />
nvoHiTempHistory SNVT_temp_p High Temperature Last 24 Hours<br />
nvoLoTempHistory SNVT_temp_p Low Temperature Last 24 Hours<br />
nvoHiHumHistory SNVT_lev_percent High Humidity Last 24 Hours<br />
nvoLoHumHistory SNVT_lev_percent Low Humidity Last 24 Hours<br />
nvoCoolUtlz SNVT_switch Cooling Utilization Last 24 Hours –DX<br />
unit only<br />
nvoHeatUtlz SNVT_switch Heating Utilization Last 24 Hours<br />
nvoChilledUtlz SNVT_switch Chilled Water Utilization Last 24 Hours<br />
– This applies to chilled water unit only<br />
nvoHumidUtlz SNVT_switch Humidifier Utilization Last 24 Hours<br />
nvoComp1Runtime SNVT_time_hour Compressor 1 Runtime – DX unit only<br />
nvoComp2Runtime SNVT_time_hour Compressor 2 Runtime – DX unit only<br />
nvoComp3Runtime SNVT_time_hour Compressor 3 Runtime – This only<br />
applies to four stages cooling unit<br />
nvoComp4Runtime SNVT_time_hour Compressor 4 Runtime - This only<br />
Document 600-000-685 6
Network Variable Network Variable Type Description<br />
applies to four stages cooling unit<br />
nvoHeat1Runtime SNVT_time_hour Heater 1 Runtime<br />
nvoHeat2Runtime SNVT_time_hour Heater 2 Runtime<br />
nvoHeat3Runtime SNVT_time_hour Heater 3 Runtime<br />
nvoHumidRuntime SNVT_time_hour Humidifier Runtime<br />
nvoFanRuntime SNVT_time_hour Blower Runtime<br />
nvoCondRuntime SNVT_time_hour Condenser Runtime<br />
nvoDehumRuntime SNVT_time_hour Dehumidifier Runtime<br />
nvoESaverRuntime SNVT_time_hour Energy Saver Runtime – Optional. This<br />
applies to energy saver unit only<br />
nvoChillRuntime SNVT_time_hour Chilled Water Runtime – This applies to<br />
the chilled water unit only.<br />
nvoAlarm SNVT_state_64 Alarm Status – See list below for details<br />
nvoAnaIn1Value SNVT_reg_val Analog Input 1 sensor Value<br />
nvoAnaIn2Value SNVT_reg_val Analog Input 2 sensor Value<br />
nvoAnaIn3Value SNVT_reg_val Analog Input 3 sensor Value<br />
nvoAnaIn4Value SNVT_reg_val Analog Input 4 sensor Value<br />
4.2 Read/Write Configuration<br />
Network Variable Network Variable Type Description<br />
nviFireLimit SNVT_temp_p Fire Temperature Limit<br />
nviHiTempLimit SNVT_temp_p High Return Air Temperature Limit<br />
nviLoTempLimit SNVT_temp_p Low Return Air Temperature Limit<br />
nviLoDiscLimit SNVT_temp_p Low Discharge Air Temperature Limit -<br />
Optional discharge air sensor required<br />
nviWaterLimit SNVT_temp_p Chilled Water Temperature Limit – Optional<br />
chilled water temperature sensor required.<br />
nviHiHumidLimit SNVT_lev_percent High Humidity Limit<br />
nviLoHumidLimit SNVT_lev_percent Low Humidity Limit<br />
nviHumDeadband SNVT_lev_percent Humidity Deadband<br />
nviHumSetpoint SNVT_lev_percent Humidity Setpoint<br />
nviTempDeadband SNVT_temp_diff_p Temperature Deadband<br />
nviTempSetpoint SNVT_temp_p Temperature Setpoint<br />
4.3 Control<br />
Network Variable Network Variable Type Description<br />
nviInhibitCool SNVT_switch Inhibit Cooling<br />
nviInhibitHeat SNVT_switch Inhibit Heating<br />
nviInhibitHumid SNVT_switch Inhibit Humidification<br />
nviInhibitDehum SNVT_switch Inhibit Dehumidification<br />
nviInhibitFan SNVT_switch Inhibit Blower<br />
Document 600-000-685 7
Network Variable Network Variable Type Description<br />
nviStandby SNVT_switch Standby Mode – Unit on/off control.<br />
See the nvistandby description below<br />
for details.<br />
nviFanSpeed SNVT_lev_cont Plug Fan Speed control 30-100%<br />
5 Network Variables Description<br />
5.1 nvoReturnTemp<br />
nvoReturnTemp contains the current return air temperature.<br />
5.2 NvoDiscTemp (optional)<br />
nvoDiscTemp contains the current discharge air temperature. This is an optional nvo, it requires a<br />
optional discharge air temperature sensor to be installed to the <strong>DAP</strong> <strong>III</strong> controller.<br />
5.3 NvoWaterTemp (Optional)<br />
nvoWaterTemp contains the current chilled water temperature. This is an optional nvo, it requires<br />
an optional chilled water temperature sensor to be installed to the <strong>DAP</strong> <strong>III</strong> controller.<br />
5.4 nvoHumidity<br />
nvoHumidity contains the current space humidity.<br />
5.5 nvoCoolStagesOn<br />
nvoCoolStagesOn contains the current number of cooling stages in use.<br />
5.6 nvoHeatStagesOn<br />
nvoHeatStagesOn contains the current number of heating stages in use.<br />
5.7 nvoHumidifying<br />
nvoHumidifying contains the current state of the humidifier.<br />
Humidifier value state<br />
Off 0 0<br />
On >0 1<br />
Document 600-000-685 8
5.8 nvoDehumidifying<br />
nvoDehumidifying contains the current dehumidification state.<br />
Dehumidification value state<br />
Off 0 0<br />
On >0 1<br />
5.9 nvoValve (Chilled Water Unit Only)<br />
nvoValve contains the current position of the chilled water valve. This nvo only applies to unit<br />
with a chilled water valve, not DX only unit.<br />
0% = Full closed<br />
100% = Full open<br />
5.10 nvoHValve (Optional)<br />
nvoHValve contains the current position of the humidifier valve. This is an optional nvo and only<br />
applied to unit with an optional modulating humidifier.<br />
0% = Full closed<br />
100% = Full open<br />
5.11 nvoHiTempHistory<br />
nvoHighTempHistory contains the highest recorded return air temperature over the last 24 hours.<br />
5.12 nvoLoTempHistory<br />
nvoLoTempHistory contains the lowest recorded return air temperature over the last 24 hours.<br />
5.13 nvoHiHumHistory<br />
nvoHighHumHistory contains the highest recorded humidity over the last 24 hours.<br />
5.14 nvoLoHumHistory<br />
nvoLoHumHistory contains the lowest recorded humidity over the last 24 hours.<br />
5.15 nvoCoolUtlz<br />
nvoCoolUtlz contains the average cooling utilization over the last 24 hours.<br />
5.16 nvoHeatUtlz<br />
nvoHeatUtlz contains the average heating utilization over the last 24 hours.<br />
Document 600-000-685 9
5.17 NvoChilledUtlz (Chilled Water Unit Only)<br />
nvoChilledWaterUtlz contains the average chilled water utilization over the last 24 hours.<br />
This nvo only applies to unit with a chilled water valve, DX only unit<br />
5.18 nvoHumidUtlz<br />
nvoHumidifierUtlz contains the average humidifier utilization over the last 24 hours.<br />
5.19 nvoComp1Runtime<br />
nvoComp1Runtime contains the total runtime for compressor 1.<br />
5.20 nvoComp2Runtime<br />
nvoComp2Runtime contains the total runtime for compressor 2.<br />
5.21 nvoComp3Runtime (Optional)<br />
nvoComp3Runtime contains the total runtime for compressor 3. This nvo only applies to DX unit<br />
that has more than two stages of cooling such as unit with two tandem compressors.<br />
5.22 nvoComp4Runtime (Optional)<br />
nvoComp4Runtime contains the total runtime for compressor 4. This nvo only applies to DX unit<br />
that has more than two stages of cooling such as unit with two tandem compressors.<br />
5.23 nvoHeat1Runtime<br />
nvoHeat1Runtime contains the total runtime for heater 1.<br />
5.24 nvoHeat2Runtime<br />
nvoHeat2Runtime contains the total runtime for heater 2.<br />
5.25 nvoHeat3Runtime<br />
nvoHeat3Runtime contains the total runtime for heater 3.<br />
5.26 nvoHumidRuntime<br />
nvoHumidRuntime contains the total runtime for the humidifier.<br />
Document 600-000-685 10
5.27 nvoFanRuntime<br />
nvoFanRuntime contains the total runtime for the blower.<br />
5.28 nvoCondRuntime<br />
nvoCondRuntime contains the total runtime for the condenser.<br />
5.29 nvoDehumRuntime<br />
nvoDehumRuntime contains the total runtime for dehumidification.<br />
5.30 NvoESaverRuntime (Optional)<br />
nvoESaverRuntime contains the total runtime for energy saver. This nvo only applies to unit with<br />
an optional energy saver configuration.<br />
5.31 NvoChillRuntime (Chilled Water Unit Only)<br />
nvoChillRuntime contains the total runtime for chilled water cooling. This nvo only applies to unit<br />
with chilled water valve.<br />
5.32 nvoAlarm<br />
nvoAlarm is a SNVT_state_64 bitfield that contains the current unit alarms. The bits are defined<br />
in the following table.<br />
Bit<br />
Description<br />
0 Water detected under floor: Check probe<br />
1 No air flow: Check belt and motor<br />
2 Dirty filter: Check filters<br />
3 Humidifier problem: Check water pressure<br />
4 Low voltage warning: Check unit<br />
5 Fire stat alarm: Unit shutdown<br />
6 Compressor short cycle warning – DX unit only<br />
7 Power problem or unit restart<br />
8 Humidity sensor problem<br />
9 Temperature sensor problem<br />
10 Scheduled maintenance due<br />
11 High pressure/Internal overload: Comp 1 –DX unit only<br />
12 Low pressure C1: Automatic reset – DX unit only<br />
13 High pressure/Internal overload: Comp 2 –DX unit only<br />
14 Low pressure C2: Automatic reset - DX unit only<br />
15 Smoke detector: Unit shutdown - Optional<br />
16 No water flow: Check pump - Optional<br />
17 Discharge temperature sensor problem - Optional<br />
18 High temperature warning<br />
19 Low temperature warning<br />
Document 600-000-685 11
5.33 nvoAnaIn1Value<br />
Bit<br />
Description<br />
20 High humidity warning<br />
21 Low humidity warning<br />
22 Fan motor overload: Check motor amperage - Optional<br />
23 Local alarm #1: See tag inside door – Optional<br />
24 Local alarm #2: See tag inside door - Optional<br />
25 Local alarm #3: See tag inside door - Optional<br />
26 Local alarm #4: See tag inside door - Optional<br />
27 Standby pump on: Check primary pump - Optional<br />
28 UPS power on: Check main power supply - Optional<br />
29 Custom alarm #1 - Optional<br />
30 Custom alarm #2 - Optional<br />
31 Custom alarm #3 -Optional<br />
32 Custom alarm #4 - Optional<br />
33 Humidification inhibited - Optional<br />
34 Reheat inhibited - Optional<br />
35 Reheat and humidification inhibited - Optional<br />
36 Low discharge air temperature alarm - Optional<br />
37 Manual override: Check bypass switches<br />
38 High condensate water level – Optional on Floor Model,<br />
standard only ceiling Model<br />
39 Unit in standby, all functions held off – Optional<br />
nvoAnaIn1Value contains the current value of the sensor connected to analog input 1.<br />
5.34 nvoAnaIn2Value<br />
nvoAnaIn2Value contains the current value of the sensor connected to analog input 2.<br />
5.35 nvoAnaIn3Value<br />
nvoAnaIn3Value contains the current value of the sensor connected to analog input 3.<br />
5.36 nvoAnaIn4Value<br />
nvoAnaIn4Value contains the current value of the sensor connected to analog input 4.<br />
5.37 nviFireLimit<br />
nviFireTempLimit contains the fire temperature limit. The valid range is 38-65 C (100-150 F).<br />
5.38 nviHiTempLimit<br />
nviHiTempLimit contains the high return air temperature limit. The valid range is 10-32 C (50-90<br />
F).<br />
Document 600-000-685 12
5.39 nviLoTempLimit<br />
nviLoTempLimit contains the low return air temperature limit. The valid range is 10-32 C (50-90<br />
F).<br />
5.40 nviLoDiscLimit (Optional)<br />
nviLoDiscLimit contains the low discharge air temperature limit. The valid range is 7-16 C (45-61<br />
F). Optional discharge air temperature sensor required. See nvodicstemp above.<br />
5.41 NviWaterLimit (Optional)<br />
nviWaterLimit contains the chilled water temperature limit. The valid range is 5-15 C (40-60 F).<br />
An optional chilled water temperature sensor required. This is only used when unit has an optional<br />
Energy saver chilled water cooling. See nvowatertemp above for details.<br />
5.42 nviHiHumidLimit<br />
nviHiHumidLimit contains the high humidity limit. The valid range is 10-90%.<br />
5.43 nviLoHumidLimit<br />
nviLoHumidLimit contains the low humidity limit. The valid range is 10-90%.<br />
5.44 nviHumDeadband<br />
nviHumDeadband contains the humidity deadband setting. The valid range is 0-15%.<br />
5.45 nviHumSetpoint<br />
nviHumSetpoint contains the humidity setpoint setting. The valid range is 30-70%.<br />
5.46 nviTempDeadband<br />
nviTempDeadband contains the return air deadband setting. The valid range is 1-2C (1-5F).<br />
5.47 nviTempSetpoint<br />
nviTempSetpoint contains the return air setpoint setting. The valid range is 15-26C (60-80F).<br />
5.48 nviInhibitCool<br />
nviInhibitCool contains the current cooling inhibit setting.<br />
Inhibit Cooling value state<br />
Inhibit Off 0 0<br />
Inhibit On >0 1<br />
Document 600-000-685 13
5.49 nviInhibitHeat<br />
nviInhibitHeat contains the current heating inhibit setting.<br />
Inhibit Heating value state<br />
Inhibit Off 0 0<br />
Inhibit On >0 1<br />
5.50 nviInhibitHumid<br />
nviInhibitHumid contains the current humidification inhibit setting.<br />
Inhibit Humidification value state<br />
Inhibit Off 0 0<br />
Inhibit On >0 1<br />
5.51 nviInhibitDehum<br />
nviInhibitDehum contains the current dehumidification inhibit setting.<br />
Inhibit Dehumidification value state<br />
Inhibit Off 0 0<br />
Inhibit On >0 1<br />
5.52 nviInhibitFan<br />
nviInhibitFan contains the current blower inhibit setting.<br />
Inhibit Blower value state<br />
Inhibit Off 0 0<br />
Inhibit On >0 1<br />
5.53 nviStandby<br />
nviStandby contains the current unit standby inhibit setting. Use this nvi for unit on/off control.<br />
For instance, if the value of this nvi is changed to 2 and the state is changed to 1, the unit will be in<br />
standby mode (so called off mode)<br />
Mode value state<br />
On 0 0<br />
Standby >0 1<br />
5.54 nviFanSpeed<br />
nviFanSpeed contains the current blower fan speed. The valid range is 30%-100%.<br />
This point can be used to control fan speed. Lower than 60% fan speed is not recommended for<br />
DX cooling equipment.<br />
Document 600-000-685 14
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