Trane UV-SVN02B-EN, Installation Operation & Maintenance, Page: 5 / 52

General Information
UV-SVN002-EN 5
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 mounted controls, the actuator
is 3-point floating. A 2 to 10 VDC actua-
tor is also available when other than
Trane controls is required. See Table 1
for technical data of the OA/RA actua-
tor.
Face and Bypass (Option)
The face and bypass option consist of
an actuator, damper blade and 2-posi-
tion water valve (option).
During bypass mode, the damper
moves to prevent air from traveling
through the coil. The damper blade is
tightly sealed to eliminate heat pickup
while in the full bypass mode.
A two-position isolation valve control
(option) further enhances this system
by closing off all water flow to the coil
during full bypass operation. 2-pipe
main steam systems utilize the face and
bypass as part of the standard opera-
tion and may incorporate the optional
isolation valve.
Face and Bypass Actuator
(option)
The face and bypass damper actuator
incorporates a direct couple design for
both the horizontal and the vertical con-
figurations. The actuator is provided
with electronic protection against over-
load. It does not contain, nor require a
limit switch. When reaching the damper
end position, the actuator automatically
stops. The gears can be manually disen-
gaged with a button on the actuator
housing.
See Table 2 for technical data.
Power Supply
24VAC + 20% 50/60HZ
24VAC + 10%
Power
Consumption Running: 2.5W
Holding: 1W
Transformer
Sizing
5VA (class 2 power source)
Overload
Protection Electronic throughout
0 to 95-degree rotation
Control Signal
2-10 VDC
3 point floating w/ Trane controls
Rotation Angle
95-degree max.
Adjustable w mechanical stop
Torque 35-inch/lb
Rotation
Direction Spring return reversible w/
CW/CCW mounting
Position
Indication
Visual indicator, 0 to 95-degrees
Run Time 90-second constant
Noise Level Running: 30dB
Power Supply
24VAC + 20% 50/60HZ
24VAC + 10%
Power
Consumption
2W
Transformer
Sizing
3VA (class 2 power source)
Manual Override External push button
Control Signal 3 point floating w/ Trane controls
Rotation Angle
95-degree max.
Adjustable w mechanical stop
Torque 35-inch/lb
Rotation
Direction
Reversible with switch L/R
Position
Indication
Clip-on indicator
Run Time 90-second constant
Noise Level Less than 35dB
Table 1: Technical Data for OA/RA
actuator
Table 2: Technical Data for face &
bypass actuator