FXVMA Installation Instructions
2
Installation
Observe these guidelines when installing the FXVMA:
•
Transport the FXVMA in its original container to
minimize vibration and shock damage.
•
Do not drop the FXVMA or subject it to physical
shock.
Accessories
Use Table 1 to order accessories.
Mounting
To mount the FXVMA:
1.
Place the FXVMA in the proper mounting position
on the damper shaft so that the wiring connections
are easily accessible.
2.
Make sure the FXVMA base is parallel to the VAV
box (perpendicular to the damper shaft). If needed,
use a spacer to offset tipping of the FXVMA caused
by the shaft bushings.
3.
Secure the self-piercing No.10 screw through the
FXVMA mounting slot with a power screwdriver
and 100 mm (4 in.) extension socket; otherwise,
use a punch to mark the position of the shoulder
washer and then drill a hole into the VAV box using
a 3.5 mm (9/64 in.) drill bit.
4.
Insert and tighten the mounting screw against the
washer.
5.
Locate the damper position using the typical
marking on the end of the damper shaft (Figure 2).
6.
Note the direction, Clockwise (CW) or
Counterclockwise (CCW), required to close the
damper.
7.
Grasp the damper shaft firmly with pliers and either
manually close the damper for 90° boxes or
manually open for 45° or 60° boxes.
8.
Push down and hold the Manual Override button,
and turn the FXVMA coupler until it contacts the
mechanical end-stop at either the fully closed (90°
boxes) or fully open (45° and 60° boxes) position.
Table 1: FXVMA Accessories Ordering
Information
Product
Code
Number
Description
Y64T15-0
Transformer: 120/208/240 VAC Primary
to 24 VAC Secondary, 92 VA, Foot
Mount, 30 in. Primary Leads and 30 in.
Secondary Leads, Class 2
Y65A13-0
Transformer: 120 VAC Primary to
24 VAC Secondary, 40 VA, Foot Mount,
8 in. Primary Leads and 30 in.
Secondary Leads, Class 2
Y65T42-0
Transformer: 120/208/240 VAC Primary
to 24 VAC Secondary, 40 VA, Hub
Mount, 8 in. Primary Leads and
Secondary Screw Terminals, Class 2
Y65T31-0
Transformer: 120/208/240 VAC Primary
to 24 VAC Secondary, 40 VA, Hub
Mount, 8 in. Primary Leads and
Secondary Screw Terminals, Class 2
AP-TBK1002-0
2-position screw terminal that plugs into
spade lugs
AP-TBK1003-0
3-position screw terminal that plugs into
spade lugs
IMPORTANT:
When the air supply to the VAV box
is below 10°C (50°F), make sure that any
condensation on the VAV box (particularly on the
damper shaft) does not enter the electronics. Mount
the FXVMA vertically above the damper shaft to
allow any shaft condensation to fall away from the
FXVMA. Additional measures may be required in
some installations.
IMPORTANT:
Do not overtighten the screws, or the
threads may strip. If you plan to mount to the VAV
box, make sure the screws do not interfere with
damper blade movement.
Figure 2: Typical Damper End Shaft Icons
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