Network Variable - Outputs - Honeywell CVL4022ASVAV1 Engineering Manual

Net Data Type
Nv/field SNVT
nviValveOvrd
reheatPos lev_percent
periphPos lev_percent
nviWindow switch

NETWORK VARIABLE - OUTPUTS

Nv/field
nvoApAlarm
LowFlow
AirflowOvrd
EmrgOvrd
HtgOvrd
31-00083—02
Table 21. Network Variable - Inputs (Continued)
AP Internal
Units
Table 22. Network Variable - Outputs
Net Data Type
Application alarms group 1
0: inactive alarm
1: active alarm
UBIT Low airflow alarm (pressure independent control)
10 minute alarm delay.
Occupied AND DamperControl ? 100% AND PressureIndpControl AND
Airflow < ((AirflowSP – DeadBand)*0.95))
UBIT Airflow control loop override alarm
UBIT Emergency override alarm. This indicates that the network command nviEmergCmd
is active.
UBIT Reheat or peripheral heat override alarm
Allows override of valves for hydronic balancing.
Writing of 0-100% overrides valve position or percent number of stages to
commanded value. Writing invalid (NaN) or (+inf) reverts to automatic
operation.
Notes:
This override duplicates the functionality of nviHtgOvr.
Use nviValveOrd to command peripheral and reheat valves individually.
Reheat
≤ ≤
0 range 100%, invalid
Peripheral heat
0 ≤ range ≤ 100%, invalid
Allows the window sensor from another node to be used as the window
sensor and is typically bound to nvoWindow of another node. nviWindow
must show that the window is closed for the 300 seconds before the
logical window signal is changed to window closed. This makes it possible
for several window sensors to be "ORed" together by binding them all to
nviWindow. If any one bound window sensor shows window open, then
nviWindow shows window open for up to the 300 seconds after the last
sensor shows window closed. The states are listed below:
State Value
SW_OFF or Don't care
SW_NUL or
other
SW_ON 0
SW_ON Not Zero
WindowOpen indicates the current state of the window sensors and is
calculated from nviWindow.state and the local occupancy sensor. The
local sensor and nviWindow are "ORed" together. If either the local sensor
or nviWindow shows that the window is open (nviWindow.state =
SW_ON), then WindowOpen shows that the window is open. 1 means that
the window is open and 0 means that the window is closed. When the
window, the controller mode is switched to FREEZE_PROTECT.
TempMode = Off
Heating SetPt = 46F
Description
76
Description
Meaning
Window Closed
Window Closed. If the node receives this
combination of state and value, then state
is set to SW_OFF.
Window Open