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VAV-SVX02B-EN
Model 3011
The model 3011 Pneumatic Volume
Regulator (PVR) is capable of operating
with normally-open or normally-closed
air valves and can operate with either
direct-acting (DA) or reverse-acting
(RA) thermostats.
Figure 9–Acceptable Installation Positions
Installation
1. Attach bracket either vertically or horizontally to the illustration surface. Horizontal
is preferred, vertical is acceptable, any other position is not acceptable (see Figure 9).
2. Insert controller into its bracket. Controller may be face up, face down, face left, or
face right. The controller LO and HI stat delta P must be calibrated in the same
position that it is mounted.
Connections
Figure 10 illustrates a typical piping diagram of a normally-open or normally-
closed unit.
Figure 10–Typical Piping Diagram of Normally-Open or Normally-Closed Unit
Selecting Direct- or Reverse-Acting Thermostat (3011)
The model 3011 PVR must be calibrated to operate with either a direct-acting or
reverse-acting thermostat. The control must also be changed when used with a
normally-open or normally-closed air valve.
Model 3011—Pneumatic
Volume Regulator
6
R
C
R
C
R
HI
LO
Airflow Sensor
Actuator
DAMPER
S
20
M
B
H
G
NC
N
C
N
C
I
RESET SPAN
LO STAT
N
I
R
C
N
R
C
R
HI STAT
∆P
T
∆P
S
20
Normally-Open Unit or
Normally-Closed Unit
Volume
Regulator
Restrictor
Tee
One-Pipe
Remote-Installed
T-Stat
Restricted Leg