39
4A
1P
C
-T
V2
.1
NM
V
-D2
M
-EN
11
-02
-04.
d
o
c
P
M
V
A
V
- S
u
bje
c
t t
o t
e
c
hnic
a
l c
ha
nge
s
VAV
– Module NMV-D2M
Legend
Sequence
a) -
Step 1: V’max
- Volumetric flow at setpoint
- Damper in control range
b) - Step 2: Auto [external control signal]
- Actual value following setpoint
- Damper in control range
c) -
Step 3: V’min
- Volumetric flow at setpoint
- Damper in control range
N-P1.1 VAV-Box
................................................................................................................................
correct function
Conclusion
The correctly set up VAV air box is functioning
correctly over the whole preset working range
V’min ... V’max.
Suitable Test-Sequences
-
Test 3 Max-Auto-Min 9m.txt
- or BasicTest Max-Min 5m.txt (without Auto Step)
NMV-D2M
– Diagnosis
a
b
c
S
A
D
A
Suitable Test-Sequences
-
Test 0 CAV (Open-Max-Min-Close) 8m.txt
-
Test 4 Max-Mid-Min 9m.txt
- BasicTest Max-Min 5m.txt
a
b
d
N-P1.2 CAV-Box
................................................................................................................................
correct function
Sequence
a) - Step 1: Damper open (uncontrolled)
- Volumetric flow depends on supply
pressure
- Damper 100% open
b) -
Step 2: V’max
- Volumetric flow at setpoint
- Damper in control range
c) -
Step 3: V’min
- Volumetric flow at setpoint
- Damper in control range
c) - Step 4: Damper closed (uncontrolled)
- Volumetric flow zero [m
3
/h] / [l/s]
- Damper closed
Conclusion
The correctly set up VAV air box is functioning
correctly over the whole preset working range
V’min ... V’max.
c
S
A
A
D
A
Legend
