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VAV-PRC011M-EN 63

Single-Duct VAV Terminal Units

Pneumatic Controls

Normally Open Actuator—Pneumatic 3-8 psig (20-55 kPa) spring-range pneumatic actuator.

Normally-Closed Actuator—Pneumatic 8 -13 psig (55-90 kPa) spring-range pneumatic actuator.

3011 Pneumatic Volume Regulator (PVR)—The regulator is a thermostat reset velocity controller,

which provides consistent air delivery within 5% of cataloged flow down to 18% or less of unit

cataloged cfm, independent of changes in system static pressure. Factory-calibrated, field-

adjustable setpoints for minimum and maximum flows. Average total unit bleed rate, excluding

thermostat, is 28.8 scim at 20 psig (7.87 ml/min at 138 kPa) supply.

Control Options

Transformer (VCCF, VCWF)—A 50-VA transformer is factory-installed in an enclosure with 7/8” (22

mm) knockouts to provide 24 VAC for controls.

Disconnect Switch (VCCF, VCWF)—A toggle disconnect disengages primary power to terminal.

Fuse (VCCF, VCWF)—Optional fuse is factory-installed in the primary voltage hot leg.

Hot Water Valves

Two-Position Valve—The valve is a field-adaptable, 2-way or 3-way configuration and ships with

a cap to be field-installed when configured as a 2-way valve. All connections are National Pipe

Thread (NPT). valve body is forged brass with stainless steel stem and spring. Upon demand, the

motor strokes the valve. When actuator drive stops, a spring returns valve to its fail-safe position.

Flow Capacity – 4.00 Cv

Overall Diameter – ½" NPT

Close-off Pressure – 25 psi (172 kPa)

Flow Capacity – 5.0 Cv

Overall Diameter – 3/4" NPT

Close-off Pressure – 20 psi (138 kPa)

Flow Capacity – 8.0 Cv

Overall Diameter – 1" NPT

Close-off Pressure – 17 psi (117 kPa)

Maximum Operating Fluid Temperature – 200ºF (93ºC)

Maximum system pressure – 300 psi (2067 kPa)

Electrical Rating – 7 VA at 24 VAC, 6.5 Watts, 50/60 Hz

Proportional Water Valve—The valve is a field-adaptable, 2-way or 3-way configuration and ships

with a cap over the bottom port. This configures the valve for 2-way operation. For 3-way operation,

remove the cap. The valve is designed with an equal percentage plug. The intended fluid is water

or water and glycol (50% maximum glycol). The actuator is a synchronous motor drive. The valve

is driven to a predetermined position by the UCM controller using a proportional plus integral

control algorithm. If power is removed, the valve stays in its last position. The actuator is rated for

plenum applications under UL 94-5V and UL 873 standards.

Pressure and Temperature Ratings – The valve is designed and tested in full compliance with ANSI

B16.15 Class 250 pressure/temperature ratings, ANSI B16.104 Class IV control shutoff leakage, and

ISA S75.11 flow characteristic standards.

Flow Capacity – 0.7 Cv, 2.7 Cv, 6.6 Cv, 8.0 Cv

Overall Diameter – ½" NPT

Maximum Allowable Pressure – 300 psi (2068 kPa)

Maximum Operating Fluid Temperature – 200ºF (93°C)

Maximum Close-off Pressure – 60 psi (379 kPa)

Electrical Rating – 3VA at 24 VAC

8” plenum rated cable with AMP Mate-N-Lok connector. This connector is designed to mate with

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