Operating Instructions

Application 2521: VAV Cooling or Heating
Siemens Building Technologies, Inc. 2-19
Table 2-4. Point Database for Application 2521.
Point
Number
Descriptor Factory
Default
(SI Units)
Eng.
Units
(SI Units)
Slope
(SI Units)
Intercept
(SI Units)
On Text Off Text
34 HTG FLOW MAX 2200
(1038.18)
CFM
(LPS)
4
(1.8876)
0 – –
{35} AIR VOLUME 0
(0.0)
CFM
(LPS)
4
(1.8876)
0 – –
36 FLOW COEFF 1.0 – 0.01 0.0 – –
{40} SUPPLY TEMP 74.0
(23.495556)
DEG F
(DEG C)
0.5 (0.28) 37.5
(3.055556)
– –
{41} DO 1 OFF – – – ON OFF
{42} DO 2 OFF – – – ON OFF
{48} DMPR COMD 0.0 PCT 0.4 0.0 – –
{49} DMPR POS 0.0 PCT 0.4 0.0 – –
51 MTR1 TIMING 95 SEC 1 0 – –
56 DMPR ROT ANG 90 – 1 0 – –
58 MTR SETUP 0 – 1 0 – –
59 DO DIR. REV 0 – 1 0 – –
61 COOL TEMP 65.0
(18.455556)
DEG F
(DEG C)
0.5
(0.28)
37.5
(3.055556)
– –
62 HEAT TEMP 80.0
(26.855556)
DEG F
(DEG C)
0.5
(0.28)
37.5
(3.055556)
– –
63 CLG P GAIN 20.0
(36.0)
– 0.25
(0.45)
0.0 – –
64 CLG I GAIN 0.01
(0.018)
– 0.001
(0.0018)
0.0 – –
65 CLG D GAIN 0
(0.0)
– 2
(3.6)
0 – –
66 CLG BIAS 0.0 PCT 0.4 0.0 – –
67 HTG P GAIN 10.0
(18.0)
– 0.25
(0.45)
0.0 – –
68 HTG I GAIN 0.01
(0.018)
– 0.001
(0.0018)
0.0 – –
69 HTG D GAIN 0
(0.0)
– 2
(3.6)
0 – –
70 HTG BIAS 0.0 PCT 0.4 0.0 – –
1. Points not listed are not used in this application
2. A single value in a column means that the value is the same in English units and in SI units.
3. Point numbers that appear in brackets { } may be unbundled at the field panel.
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