Table 26. LONMARK® /Open System Points. (Continued)
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| User Address | NvName | Field Name | (Metric) or States plus Range | DigitalStateor ValueofState | Default | Share | Map | DirectAccess | HardwareConfig. | ManualConfig. | FailureDetect | Comments | |
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| Engineering Units: English |
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| DestEmergCmd | nviEmerg |
| EMERG_NORMAL | 0 | EMERG_NORMAL | M | X | X | X |
| X |
| Emerg is an emergency input from a device that determines the correct |
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| (SNVT_hvac_emerg) |
| EMERG_PRESSURIZE | 1 |
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| action during a given emergency (such as a fire). If Emerg is |
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| EMERG_DEPRESSURIZE | 2 |
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| EMERG_NORMAL the fan and economizer damper are controlled by the |
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| EMERG_PURGE | 3 |
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| heating and cooling control algorithm. If Emerg is EMERG_PRESSURIZE, |
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| EMERG_SHUTDOWN | 4 |
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| then the fan is controlled on and the economizer damper is open. If Emerg |
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| EMERG_NUL | 255 |
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| is EMERG_DEPRESSURIZE, then the fan is controlled on and the |
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| economizer damper is closed. If Emerg is EMERG_SHUTDOWN, then the |
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| fan is controlled off and the economizer damper is closed. If Emerg is |
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| EMERG_PURGE, the fan and damper go to the state specified by |
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| Config.SmokeControl. If Emerg is not configured then it is set to |
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| EMERG_NUL. |
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| SrcUnitStatus | nvoUnitStatus | mode | HVAC_AUTO | 0 | HVAC_NUL | M | X |
| X |
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| Mode is set according to the Data1.mode. If Data1.mode is |
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| (SNVT_hvac_status) |
| HVAC_HEAT | 1 |
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| START_UP_WAIT, SMOKE_EMERGENCY, or FREEZE_PROTECT, mode |
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| HVAC_MRNG_WRMUP | 2 |
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| is set to HVAC_NUL which indicates that the node is in a mode not |
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| HVAC_COOL | 3 |
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| supported by the SNVT_hvac_mode data type. If Data1.mode is HEAT, |
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| HVAC_NIGHT_PURGE | 4 |
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| then mode is set to HVAC_HEAT which indicates that heating energy is |
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| HVAC_PRE_COOL | 5 |
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| being supplied to the controlled space. If Data1.mode is COOL, then mode |
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| HVAC_OFF | 6 |
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| is set to HVAC_COOL, which indicates that cooling energy is being |
101 |
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| HVAC_TEST | 7 |
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| supplied to the controlled space. If Data1.mode is OFF_MODE or |
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| HVAC_EMERG_HEAT | 8 |
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| DISABLED_MODE, then mode is set to HVAC_OFF which indicates that | |
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| HVAC_FAN_ONLY | 9 |
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| the node is not running its normal temperature control and the outputs are |
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| HVAC_NUL | 255 |
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| not turned off. If Data1.mode is EMERG_HEAT, mode is set to |
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| HVAC_EMERG_HEAT where, in a heat pump application, the compressor |
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| stages are disabled and only auxiliary heating stages are turned on. If |
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| Data1.mode is MANUAL or FACTORY_TEST, mode is set to HVAC_TEST |
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| which indicates that the node is in a manual or test mode. If Data1.mode is |
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| FAN_ONLY, mode is set to HVAC_FAN_ONLY which indicates that the fan |
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| is running but the space temperature control is turned off. |
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| nvoUnitStatus | heat_output_primary | Percentage |
| 0 |
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| heat_output_primary reports the current percentage of heating stages or |
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| (SNVT_hvac_status) |
| 0 to 100 |
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| modulating heat turned on. If the node is controlling a heat pump, |
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| heat_output_primary reports the current percentage of compressor stages |
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| turned on when the node is in the HVAC_HEAT mode. |
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| nvoUnitStatus | heat_output_secondary | Percentage |
| 0 |
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| If the node is controlling a heat pump, heat_output_secondary reports the |
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| (SNVT_hvac_status) |
| 0 to 100 |
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| current percentage of auxiliary heating stages turned on when the node is |
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| in the HVAC_HEAT or HVAC_EMERG_HEAT mode. If the node is not |
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| controlling a heat pump, heat_output_secondary is set to zero. |
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| nvoUnitStatus | cool_output | Percentage |
| 0 |
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| cool_output reports the current percentage of cooling stages or modulating |
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| (SNVT_hvac_status) |
| 0 to 100 |
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| cool turned on. If the node is controlling a heat pump, cool_output reports |
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| the current percentage of compressor stages turned on when the node is in |
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| the HVAC_COOL mode. |
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| nvoUnitStatus | econ_output | Percentage |
| 0 |
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| If there is a modulating economizer configured, econ_output reports the |
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| (SNVT_hvac_status) |
| 0 to 100 |
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| percentage that the economizer damper is opened. If no economizer is |
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| configured, econ_output reports 0. |
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| nvoUnitStatus | fan_output | Percentage |
| 0 |
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| When the fan is running, fan_output is 100 percent, and when the fan is not |
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| (SNVT_hvac_status) |
| 0 to 100 |
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| running, fan_output is 0 percent. |
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EXCEL 10 W7750A,B,C CONSTANT VOLUME AHU CONTROLLER
