Belimo TRANE TAF Series, Техническая документация инструкция

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I20683 - Subject to change.
TNF
Installation Instructions
Mechanical Installation
Standard Mounting
Mechanical Operation
The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp. A crank arm and
several mounting brackets are available for applications where the actuator cannot be direct coupled to the damper shaft.
The TNF series actuators provide true spring return operation for reliable fail-safe application and positive close-off on air tight
dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator.
The TNF series provides 95° of rotation and is provided with a graduated position indicator showing 0° to 95°.
The TNF…-S versions are provided with one built-in auxiliary switch. This SPDT switch is provided for safety interfacing or
signaling, for example, for fan start-up. The switching function is adjustable between 5° and 85°.
1. See Fig. B. Manually move the damper to the fail-safe
position (a) (usually closed). If the shaft rotated counter-
clockwise ( ), this is a CCW installation. If the shaft
rotated clockwise ( ), this is a CW installation. In a
CCW installation, the actuator side marked “CCW” faces
out, while in a CW installation, the side marked “CW”
faces out. All other steps are identical.
2. The actuator is usually shipped with the universal clamp
mounted to the “CCW” side of the actuator. To test for
adequate shaft length, slide the actuator over the shaft
with the side marked “CCW” (or the “CW” side if this is the
side with the clamp). If the shaft extends at least 1/8”
through the clamp, mount the actuator as follows. If not,
go to the Short Shaft Installation section.
Determining Torque Loading and Actuator Sizing
Damper torque loadings, used in selecting the correct size actuator, should be provided by the damper manufacturer. If this
information is not available, the following general selection guidelines can be used.
Damper Type Torque Loading
Opposed blade, without edge seals, for non-tight close-off applications 3 in-lb/sq. ft.
Parallel blade, without edge seals, for non-tight close-off applications 4 in-lb/sq. ft.
Opposed blade, with edge seals, for tight close-off applications 5 in-lb/sq. ft.
Parallel blade, with edge seals, for tight close-off applications 7 in-lb/sq. ft.
The above torque loadings will work for most applications under 2 in. w.g. static pressure or 1000 FPM face velocity. For
applications between this criteria and 3 in. w.g. or 2500 FPM, the torque loading should be increased by a multiplier of 1.5.
If the application calls for higher criteria up to 4 in. w.g. or 3000 FPM, use a multiplier of 2.0.
General Information
Trane actuators should be mounted indoors in a dry, relatively clean environment free from corrosive fumes. If the actuator is to be
mounted outdoors, a protective enclosure must be used to shield the actuator.
For new construction work, order dampers with extended shafts. Instruct the installing contractor to allow space for mounting and
service of the actuator on the shaft. The damper shaft must extend at least 3 1/2" from the duct. If the shaft extends less than 3 1/2" or
if an obstruction blocks access, the shaft can be extended with the AV 10-18 shaft extension or the actuator may be mounted in its short
shaft configuration.