Appendix A - Common HVAC SNVT's
LonWorks Integration Guide
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18
SNVT #
SNVT Name
Element #
Measurement
Value
112
SNVT_hvac_status
0
mode
0 = Controller automatically changes
between application modes
1 = Heating only
2 = Application-specific morning warm-up
3 = Cooling only
4 = Application-specific night purge
5 = Application-specific pre-cool
6 = Controller not controlling outputs
7 = Equipment being tested
8 = Emergency heat mode (heat pump)
9 = Air not conditioned, fan turned on
10 = Cooling with compressor not running
11 = Ice-making mode
12 = Max Heat
13 = Economy
14 = Dehumid
15 = Calibrate
16 = Emergency Cool
17 = Emergency Steam
18 = Max Cool
19 = HVC Load
20 = No Load
-1 = Value not available
1
% primary heat output -163.84% — 163.83
2
% secondary heat
output
-163.84% — 163.83
3
% cool output
-163.84% — 163.83
4
% econ output
-163.84% — 163.83
5
% fan output
-163.84% — 163.83
6
% in alarm
0 — 255
113
SNVT_press_p
0
Pa(Pascal)
-32,768 — 32,768
127
SNVT_chlr_status
0
chiller run mode
0 = Overwrite this scene with new data
1 = Delete this scene from the list
2 = Display this sceneís data
3 = Report the number of programmed
scenes
4 = Report the number of free scene
storage spaces
-1 = Value not available
