Mechanical Specifications: Fan-Powered

MODELS: VPCF, VPWF, VPEF, VSCF, VSWF, VSEF, LPCF, LPWF, LPEF,

LSCF, LSWF, & LSEF

VP, LP = Parallel Fan Powered Units

VS, LS = Series Fan Powered Units

Note: L = Low Height

Model Break Downs

• VPCF, VSCF, LPCF, & LSCF = Cooling Only

• VPWF, VSWF, LPWF, & LSWF = With Hot Water Coil

• VPEF, VSEF, LPEF, & LSEF = With Electric Coil

CASING

22-gage galvanized steel. Hanger brackets, side access (standard height - V model numbers) or bottom access (low height - L model numbers), and plenum filter are provided as standard.

AGENCY LISTING

The unit is UL and Canadian UL Listed as a room air terminal unit. Control # 9N65.

AHRI 880 Certified.

INSULATION

1/2" (12.7 mm) Matte-faced Insulation—.

The interior surface of the unit casing is acoustically and thermally lined with ½-inch, 1.5 lb/ft3 (12.7 mm, 24.0 kg/m3) composite density glass fiber with a high-density facing.The insulation R-Value is 1.9.The insulation is UL listed and meets NFPA-90A and UL 181 standards.There are no exposed edges of insulation (complete metal encapsulation).

1" (25.4 mm) Matte-faced Insulation—.

The interior surface of the unit casing is acoustically and thermally lined with 1 inch, 1.0 lb/ft3 (25.4 mm, 16.0 kg/m3) composite density glass fiber with a high-density facing. The insulation R-Value is 3.85. The insulation is UL listed and meets NFPA-

90A and UL 181 standards. There are no exposed edges of insulation (complete metal encapsulation).

1" (25.4 mm) Foil-faced Insulation—.

The interior surface of the unit casing is acoustically and thermally lined with 1-inch, 1.5 lb/ft3 (25.4 mm, 24.0 kg/m3) density glass fiber with foil facing.The

insulation R-Value is 4.1.The insulation is UL listed and meets NFPA-90A and UL 181 standards as well as bacteriological standard ASTM C 665.There are no exposed edges of insulation (complete metal encapsulation).

1" (25.4 mm) Double-wall Insulation—.

The interior surface of the unit casing is acoustically and thermally lined with a 1-inch, 1.0 lb./ft3 (25.4 mm, 16.0 kg/m3) composite density glass fiber with high-density facing.The insulation R-value is 3.8.The insulation is UL listed and meets NFPA-

90A and UL 181 standards.The insulation is covered by an interior liner made of 26-gage galvanized steel. All wire penetrations are covered by grommets. There are no exposed edges of insulation

(complete metal encapsulation).

3/8" (9.5 mm) Closed-cell Insulation—.

The interior surface of the unit casing is acoustically and thermally lined with 3/8-inch, 4.4 lb/ft3 (9.5 mm, 70.0 kg/m3) closed-cell insulation. The insulation is UL listed and meets NFPA-90A and UL 181 standards.The insulation has an R-Value of 1.4. There are no exposed edges of insulation (complete metal encapsulation).

PRIMARY AIR VALVE

Air Valve Round—.

The primary air inlet connection is an 18-gage galvanized steel cylinder sized to fit standard round duct. A multiple-point, averaging flow sensing ring is provided with balancing

142 VAV-PRC012-EN

Mechanical Specifications: Fan-Powered

taps for measuring +/-5% of unit cataloged airflow. An airflow-versus-pressure differential calibration chart is provided. The damper blade is constructed of a closed-cell foam seal that is mechanically locked between two 22-gage galvanized steel disks. The damper blade assembly is connected to a cast zinc shaft supported by self-lubricating bearings. The shaft is cast with a damper position indicator. The valve assembly includes a mechanical stop to prevent overstroking. At 4 in. wg, air valve leakage does not exceed 1% of cataloged airflow.

Air Valve Rectangular.

—Inlet collar is constructed of 22-gage galvanized steel sized to fit standard rectangular duct. An integral multiple-point, averaging flow-sensing ring provides primary airflow measurement within +/-5% of unit cataloged airflow. Damper is 22-gage galvanized steel.The damper blade assembly is connected to a solid metal shaft supported by self-lubricating bearings. The shaft is cast with a damper position indicator. The valve assembly includes a mechanical stop to prevent over-stroking. At 3.0 in. wg, air valve leakage does not exceed 44 cfm

(21 L/s).

Table 135. Fan-inlet combinations

03SQ 04SQ

VPXF

05SQ 06SQ 07SQ

LSXF

09SQ 10SQ Inlet

5"

6"

8"

10"

12"

14"

16"

8 x 14"

02SQ

X

X

X

X X

X

X

X X

X

X

X X

X

X

X

X

X

X

X

X

X

X

08SQ

X

X

X

X

X

X X

Attenuators

The attenuator is 22-gage galvanized steel with an internal acoustical liner. Attenuators have been tested in accordance with AHRI 880 standards.

Fan Motor

PSC—.

Single-speed, direct-drive, permanent split capacitor type. Thermal overload protection provided. Motors will be designed specifically for use with an open SCR. Motors will accommodate anti-backward rotation at start up. Motor and fan assembly are isolated from terminal unit.

ECM—.

Electrically Commutated Motor is designed for high-efficient operation with over 70% efficiency throughout the operating range.

FAN SPEED CONTROL

Variable Speed Control Switch (SCR)—.

The SCR speed control device is provided as standard and allows the operator infinite fan speed adjustment.

Transformer

The 50-VA transformer is factory-installed in the fan control box to provide 24 VAC for controls.

Disconnect Switch

A toggle disconnect is provided as standard and allows the operator to turn the unit on or off by toggling to the appropriate setting. This switch breaks both legs of power to the fan and the electronic controls (if applicable)

Note: Not provided on Low Height units with pneumatic controls.

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Mechanical Specifications: Fan-Powered

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Outlet Connection

Flanged Connection—Rectangular opening on unit discharge to accept 90° flanged ductwork connection.

Filter

A 1" (25 mm) filter is provided on the plenum inlet and attaches to the unit with a filter frame.

Hot Water Coil

Parallel Water Coils—.

factory- installed on the plenum inlet. The coil has 1-row with 144 aluminum-plated fins per foot (.305 m), and if needed 2-row with 144 aluminum-plated fins per foot

(.305 m). Full fin collars provided for accurate fin spacing and maximum fin-tube contact. The 3/

8" (9.5 mm) OD seamless copper tubes are mechanically expanded into the fin collars. Coils are proof tested at 450 psig (3102 kPa) and leak tested at 300 psig (2068 kPa) air pressure under water.

Coil connections are brazed.

Series Water Coils.

—factory-installed on the fan discharge. The coil has 1-row with 144 aluminum-plated fins per foot (.305 m) and, if needed, 2-row with 144 aluminum-plated fins per foot

(.305 m). Full fin collars provided for accurate fin spacing and maximum fin-tube contact. The 3/

8" (9.5 mm) OD seamless copper tubes are mechanically expanded into the fin collars. Coils are proof tested at 450 psig (3102 kPa) and leak tested at 300 psig (2068 kPa) air pressure under water.

Coil connections are brazed. Gasketed access panels, which are standard, are attached with screws.

Electric Heat Coil

The electric heater is a factory-provided and installed, UL recognized resistance open-type heater.

It also contains a disc-type automatic pilot duty thermal primary cutout, and manual reset load carrying thermal secondary device. Heater element material is nickel-chromium. The heater terminal box is provided with 7/8" (22 mm) knockouts for customer power supply. Terminal connections are plated steel with ceramic insulators. All fan-powered units with electric reheat are single-point power connections.

Electric Heat Options

Silicon-Controlled Rectifier (SCR).

Optional electric heat control that provides modulation.

Magnetic Contactor.

Optional electric heater 24V contactor for use with direct digital controls.

Mercury Contactor.

Optional electric heater 24V contactor for use with direct digital controls.

P.E. Switch with Magnetic Contactor.

This optional switch and magnetic contactor is for use with pneumatic controls.

P.E. Switch with Mercury Contactor.

This optional switch and mercury contactor is for use with pneumatic controls.

Airflow Switch.

Optional air pressure device designed to disable heater when system fan is off.

Power Fuse.

If a power fuse is chosen with a unit containing electric heat, then a safety fuse is located in the electric heater’s line of power to prevent power surge damage to the electric heater.

Any electric heat unit with a calculated MCA greater than or equal to 30 will have a fuse provided.

Disconnect Switch.

A standard factory-provided door interlocking disconnect switch on the heater control panel disengages primary voltage to the terminal.

Unit Controls Sequence Of Operation

Parallel

The unit controller continuously monitors the zone temperature against its setpoint and varies the primary airflow as required to meet zone setpoints. Airflow is limited by minimum and maximum

VAV-PRC012-EN

Mechanical Specifications: Fan-Powered

VAV-PRC012-EN position set points. For a parallel unit, the controller will intermittently start the fan upon a call for heat. Upon a further call for heat, reheat is enabled.

1.

Primary Airflow—The fan energizes when primary airflow drops below the fan setpoint airflow.

The fan automatically starts when the zone temperature drops to the heating temperature setpoint.

2. Zone Temperature—The fan energizes when the zone temperature drops to a selectable number of degrees above the heating temperature setpoint.

Series

The controller will start and run the fan continuously during the occupied mode and intermittently during the unoccupied mode. Upon a further call for heat, any hot water or electric heat associated with the unit is enabled.

Direct Digital Controls

DDC Actuator—.

Trane 3-wire, 24-VAC, floating-point quarter turn control actuator with linkage release button. Actuator has a constant drive rate independent of load, a rated torque of 35 in-lb, a 90-second drive time, and is non-spring return.Travel is terminated by end stops at fully-opened and -closed positions. An integral magnetic clutch eliminates motor stall.

DDC Actuator - Belimo — LMB24-3-TTN 3-wire, 24 VAC/DC, floating-point, quarter turn actuator with linkage release button. Actuator has a constant drive rate independent of load, a rated torque of 45 in-lb, a 95 second drive time, and is non-spring return. Travel is terminated by end stops at fully-opened and -closed positions. Internal electronic control prevents motor stall when motor reaches end stops.

Direct Digital Controller—.

The microprocessor-based terminal unit controller provides accurate, pressure-independent control through the use of a proportional integral control algorithm and direct digital control technology. The controller, named the Unit Control Module

(UCM), monitors zone temperature setpoints, zone temperature and its rate of change, and valve airflow using a differential pressure signal from the pressure transducer. Additionally, the controller can monitor either supply duct air temperature or CO2 concentration via appropriate sensors.The controller is provided in an enclosure with 7/8" (22 mm) knockouts for remote control wiring. A Trane UCM zone sensor is required.

DDC Zone Sensor—.

The UCM controller senses zone temperature through a sensing element located in the zone sensor. In addition to the sensing element, zone sensor options may include an externally-adjustable setpoint, communications jack for use with a portable edit device, and an override button to change the individual controller from unoccupied to occupied mode. The override button has a cancel feature that will return the system to unoccupied. Wired zone sensors utilize a thermistor to vary the voltage output in response to changes in the zone temperature.

Wiring to the UCM controller must be 18- to 22-awg. twisted pair wiring.The setpoint adjustment range is 50–88ºF (10–31°C). Depending upon the features available in the model of sensor selected, the zone sensor may require from a 2-wire to a 5-wire connection.Wireless zone sensors report the same zone information as wired zone sensors, but do so using radio transmitter technology.

Therefore with wireless, wiring from the zone sensor to the UCM is unnecessary.

Digital Display Zone Sensor with Liquid Crystal Display (LCD)—.

The digital display zone sensor contains a sensing element, which sends a signal to the UCM. A Liquid Crystal Display (LCD) displays setpoint or space temperature. Sensor buttons allow the user to adjust setpoints, and allow space temperature readings to be turned on or off. The digital display zone sensor also includes a communication jack for use with a portable edit device, and an override button to change the UCM from unoccupied to occupied.The override button has a cancel feature, which returns the system to unoccupied mode.

Trane LonTalk/BACnet—.

The controller is designed to send and receive data using LonTalk or

BACnet. Current unit status conditions and setpoints may be monitored and/or edited from any of several LonTalk or BACnet compatible system-level controllers.

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Mechanical Specifications: Fan-Powered

146

Pneumatic Controls

Normally Open Actuator—.

Pneumatic 3 - 8 psig (20 - 55 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% of unit cataloged cfm, independent of changes in system static pressure. Factory-calibrated, fieldadjustable 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.

UNIT OPTIONS

Power Fuse (VPCF, VPWF)—.

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).The valve body is forged brass with a hard chrome-plated brass stem. Upon demand, the motor strokes the valve.When the actuator drive stops, a spring returns the valve to its fail-safe position.The valves come with a manual operating lever that allows for the valve to be opened for system flushing. It will reset to normal position the first time the valve is cycled.

Flow Capacity – 4.0 Cv

Overall Diameter – ½" NPT

Close-off Pressure – 30 psi (207 kPa)

Flow Capacity – 5.0 Cv

Overall Diameter – 3/4" NPT

Close-off Pressure – 14.5 psi (100 kPa)

Flow Capacity – 8.0 Cv

Overall Diameter – 1" NPT

Close-off Pressure – 9 psi (62 kPa)

Maximum Operating Fluid Temperature – 200 deg F (95ºC)

Maximum system pressure – 300 psi (2067 kPa)

Maximum static pressure – 300 psi (2067 kPa)

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

18" wire leads are provided on each valve.

Proportional Water Valve—The valve is a field-adaptable, 2-way or 3-way configuration and ships with a plug in B port. This configures the valve for 2-way operation. For 3-way operation, remove the 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 2043 and UL 873 standards.

Pressure andTemperature 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 – 0.70 Cv, 2.7 Cv, 6.60 Cv, 8.00 Cv

Overall Diameter – ½" NPT

Maximum Allowable Pressure – 300 psi (2068 kPa)

Maximum Operating Fluid Temperature – 201ºF (94°C)

Maximum Close-off Pressure – 60 psi (0.4 MPa)

Electrical Rating – 3VA at 24 VAC

8” plenum rated cable with AMP Mate-N-Lok connector

VAV-PRC012-EN