Daikin MicroTech III - Airflow and Heating Control Parameters; Minimum OA Damper Settings; Heating Mode Control

ComprehensIve daTa Tables
www.DaikinApplied.com 29 ED 15103-6 • MICROTECH III WSHP UNIT CONTROLLER
Table 16: Network Variable Outputs (NVOs) - Ennity Single Stage Compressor, Continued
Point Name
lonWorks Variable
(NV Index
2
)
SNVT Type
(SNVT Index)
Range/
Default
(in Units)
Heart-
beat
Description
Network Variable Outputs (NVOs)
Previous Alarm
nvoPreviousAlarm
(27)
SNVT_str_asc
(36)
Init: No Alarms No
Indicates the previous unit fault.
Alarm Strings
• No Alarms
• Low Voltage Brownout
• Comp #1 High Pressure
• Comp #2 High Pressure
• Comp #1 Low Pressure
• Comp #2 Low Pressure
• Comp #1 Suctn Temp Snsr Fail
• Comp #2 Suctn Temp Snsr Fail
• Comp #1 Low Suction Temp
• Comp #2 Low Suction Temp
• Room Temp Sensor Fail
• Entering Water Temp Snsr Fail
• Condensate Overow
• Serial EEPROM Corrupted
• Invalid Conguration
• Low Entering Water Temp
Pump Request Output
nvoPumpRequest
(28)
SNVT_switch
(95)
Default: Null No
Indicates when the unit is requesting ow from the loop water
controller. The loop pump must be running to provide adequate
ow through the unit so the compressor(s) can operate safely.
nviComprEnable can be used by the BAS to indicate if proper
loop uid ow is occurring.
Selection State Value
No Flow Req 0 0%
Flow Req 1 100%
Null -1 0 to 100%
Setpoint Shift Output
nvoSetptShift
(25)
SNVT_temp_setpt
(106)
-3 to 3ºF
-1.67 to 1.67ºC
Init:
All Setpts 0ºF
Send
Represents the local hardwired setpoint adjustment value from
the room sensor potentiometer. It is valid when congured for
Short Range Setpoint Adjust.
Supported Fields
• occupied_cool
• standby_cool
• unoccupied_cool (always 0)
• occupied_heat
• standby_heat
• unoccupied_heat (always 0)
Status nvoStatus
SNVT_obj_status
(93)
Init:
All structure
elements = 0
No
Reports the status of the requested functional block in the
device as commanded from nviRequest.
Supported Fields
• object_id: 0=Node Obj, 1=McQuaySCC_WSHP
• invalid_id: 0=Normal ID, 1=Invalid ID
• invalid_request: 0=Valid Req, 1=Invalid Req
• report_mask: 0=Not Supported, 1=Supported
1. Analog Null (0x7FFF) is a discrete temperature value of 621.806ºF/327.67ºC. Its purpose is to indicate a sensor failure condition or when the unit controller is not
using that temperature value.
2. The Network Variable (NV) index number is a unique identier for certain LonWorks variables. Some BAS companies use this numeric value instead of text to
reference these variables. The NV index number can also be found in the XIF le.
3. After Receive Heartbeat is enabled, this variable reverts to the default (non-override) value if it is not refreshed often enough through a network command or if
communication is disabled (i.e. the device is disabled or is ofine).