Trane VAV-SVX02B-EN manual Model 3011-Pneumatic Volume Regulator, Installation, Connections

Model 3011—Pneumatic Volume Regulator

Model 3011

The model 3011 PneumaticVolume 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.

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.

Figure 9–Acceptable Installation Positions

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

Normally-Open Unit or
Normally-Closed Unit
		Volume		One-Pipe
LO				Remote-Installed
		Regulator
				T-Stat
				Restrictor
				Tee
HI				T
		H
	Actuator	B		LO STAT ΔP
		NC		HI STAT ΔP
		I	R	I N R
		M		Restricted Leg
		DAMPER		RESET SPAN
		G
Airflow Sensor		S		S
		20		20

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.

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