ComprehensIve daTa Tables
www.DaikinApplied.com 41 ED 15103-6 • MICROTECH III WSHP UNIT CONTROLLER
Table 19: Network Variable Outputs (NVOs) - SmartSource Single and Two Stage Compressor and Ennity Large Two
Compressor, Continued
Point Name
lonWorks Variable
(NV Index
2
)
SNVT Type
(SNVT Index)
Range/
Default
(in Units)
Heart-
beat
Description
Network Variable Outputs (NVOs)
Pump Request Output
nvoPumpRequest
(40)
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
(37)
SNVT_temp_setpt
(106)
-5 to 5ºF
-2.78 to 2.78ºC
Init:
All Setpts 0ºF
Send
Represents the local hardwired setpoint adjustment value
from the room sensor potentiometer. It is valid when
congured 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 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 index number is a unique identier 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 ofine).
4. The totalizer continues to increment until the maximum count is reached, at which point the BAS must reset the value by issuing a write command. The variable is
saved in nonvolatile memory every 24 hours. If power is lost, that day’s totalizer information is not stored.
To Next Page
Loading...
Need help?
General
