Mounting The Vma1410/1420; Mounting The Vma1430 - Johnson Controls VMA1400 Series Manual

18
Mounting and Wiring VMA1400 Series Controllers Technical Bulletin

Mounting the VMA1410/1420

Mounting the VMA1430

To mount the VMA1410/1420:
1. Place the VMA in the desired mounting position on the damper
shaft so the wiring terminals are easily accessible.
To allow space for VMA movement during damper rotation,
locate the shoulder washer at the center of the slot.
Make sure the VMA is parallel and mounted flat with the VAV
box. If needed, use a spacer to offset tipping of the VMA created
by shaft bushings that protrude beyond the box surface.
2. Secure the self-drilling No. 10 screw (included) into the VMA
mounting slot, using a power screwdriver and socket with
100 mm (4 in.) extension.
3. Alternately, use a punch to mark the position of the shoulder
washer, then drill a hole into the VAV box through the mark,
using a 3.5 mm (9/64 in.) bit. Position the VMA so the shoulder
washer is over the hole. Insert the mounting screw and tighten
against the washer.
Note: The mounting screw is threaded into sheet metal and the
threads can strip. Do not overtighten. Make sure the screw
does not interfere with full damper rotation.
Figure 7: Mounting Screw with Shoulder Washer
(VMA1410 and VMA1420)
To mount the VMA1430:
1. Place the VMA in the desired mounting position, preferably on a
vertical surface of the VAV box with the tubing down.
2. Secure the unit at each end with self-drilling No. 10 screws, using
a power screwdriver, 100 mm (4 in.) extension, and socket.
Mounting
Screw
Shoulder
Washer
Mounting Slot
MTGSCREW