Trane VUV 1500 CFM Installation And Owner's Manual page 6

OA/RA Actuator (Option)
The OA/RA actuator provides true
spring return operation for positive
close-off of the OA/RA damper. The
spring return system of the actuator
closes the outside damper if power is
lost to the building. When ordered
with factory controls, the actuator is a
3-point floating design. A 2 to 10 VDC
actuator is available when other than
Trane controls are specified. See Table
1 for OA/RA technical data.
Note: Because the damper actuator is
a spring return type an inner spring
will close the damper upon loss of
power. If the need to service or replace
the actuator is required, the spring
must be "loaded" for the damper to
function properly. The term loaded
means that the blade must be held in
the return air position upon replace-
ment of the actuator.
Face and Bypass Actuator (Option)
The face and bypass damper actuator
incorporates a direct couple design. It
provides electronic protection against
overload. A limit switch is not includ-
ed, nor required as part of the design.
When reaching the damper end posi-
tion, the actuator automatically stops.
The gears can be manually disen-
gaged with a button on the housing.
See Table 2 for face and bypass actua-
tor specifications.
Modulating Water Valves (Option)
The modulating control valve provides
optimum control of hot and chilled wa-
ter flow in various heating and cooling
applications. They are designed to
provide sinusoidal valve actuator trav-
el and operate silently, resisting water
hammer.
The actuator on the valve is a 24V, 3-
point floating type. See Table 3 for
modulating water valve specifications.
Isolation Valve (Option)
The isolation valve is a two position
24V, spring return type valve. It pro-
vides added control in heating and
cooling applications when used in
conjunction with the face and bypass
damper.
6
General
Information
Table 1: OA/RA actuator specification
±
Power Supply 24 VAC
20% 50/60 HZ
±
24 VAC 10%
Power Running: 2.5 W
Consumption Holding: 1 W
Transformer 5 VA (class 2-power source)
Sizing
Overload Electronic throughout 0 to
Protection 95-degree rotation
Control Signal 2 to 10 VDC
3-point floating with Trane controls
Angle of Maximum 95-degree
Rotation Adjustable with mechanical stop
Torque 35-inch/lb
Direction of Spring return reversible with CW/
Rotation CCW mounting
Position Visual indicator, 0 to 95-degrees
Indication
Run Time 90-second constant (independent of
(nominal) load)
Noise Level Running: 30 dB
Table 3: Mod. water valve specification
-
Power Supply
24 VAC
Power 4 W
Consumption
Max. Duty Cycle 15%
Nominal Timing 120 sec.
Operating Ambient 0 to 65°C
Temp. 32 to 150°F
Min./Max. Fluid Temp. 1 to 95°C
34 to 203°F
Operating Pressure Max. - 4 bar (60 psi)
Differential
Pressure Rating Static - 20 bar (300 psi)
Burst - 100 bar (1500 psi)
Flow Characteristic Linear
On heating coils, and two-pipe changeover applications, the valve is normally
open to help prevent the coil from freezing in-case of power loss.
For cooling, the valve is normally closed and opens when there is a call for cool-
ing. See Table 4 for isolation valve specifications.
Table 2: Face-bypass actuator specification
Power Supply
Power
Consumption
Transformer
Sizing
Angle of
Rotation
Torque
Direction of
Rotation
Position
Indication
Run Time
(nominal)
Manual
Override
Noise Level
Control Signal
.
Table 4: Isolation valve specification
Power Supply
50/60 HZ
Power
Consumption
Max. Fluid Temp.
Min. Fluid Temp.
Max. Operating Pressure
Max. Close-off Pressure
±
24 VAC 20% 50/60 HZ
±
24 VAC 10%
2 W
3 VA (class 2-power source)
Maximum 95-degree
Adjustable with mechanical stop
35-inch/lb
Reversible with switch L/R
Clip-on indicator
90-second constant
External push button
Less than 35 dB
3-point floating
.
-
24 VAC 50/60 HZ
5 W
94°C
200°F
1°C
34°F
300 psi
1/2" = 30 psi
3/4" = 20 psi
1" = 15 psi
UV-SVN03D-EN