McQuay FCVC, Руководство по установке и обслуживанию

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© 2009 McQuay International 800-432-1342 www.mcquay.com IM 1028/Page 40
4 Install the coupling on the end of the damper pivot rod
closest to the unit control box With the damper blade in
the closed (up) position, secure the coupling by
tightening the setscrew with the setscrew facing the front
of the unit.
Note: Suggestion: flatten the threads of the damper pivot
rod where it contacts the setscrew to prevent the
setscrew from slipping.
5 Attach the damper motor to the mounting bracket with
two #8-32 x 3/8" screws.
6 Remove the end pocket cabinet panel from the control
box side of the fan coil (remove attaching screw from tab
on the bottom front of the panel and lift off panel).
7 Remove the knockout in the fan coil chassis that
provides access for attaching the motor control rod to the
damper. See
Figure 1 .
8 Cut the damper control rod to the proper length
according to the chart in
Figure 1 .
9 Slide the damper control rod through the knockout hole
and into the coupling you installed in
Step 4 . Do not
tighten set screw!
10 Position the damper motor so that the motor control rod
fits into the motor coupling (do not tighten set screw)
and secure the motor bracket to the chassis using the #10
x 1/2" sheet metal screws.
Note: This is for preliminary positioning of the control rod.
11 Now position the rod so that the set screws on both the
damper coupling and the motor coupling will grip the
rod firmly. Mark the rod on the motor end.
12 Remove or back out the motor bracket until you are able
to tighten the 1/8" Allen set screw on the motor coupling,
then secure the motor coupling according to your
previous mark.
13 Slide the rod back into the damper coupling and secure
the motor bracket to the end panel, making sure the rod is
centered in the knockout hole.
14 The damper rod should be positioned according to the
earlier alignment. Tighten the setscrew on the coupling
with the damper in the closed position. This requires
holding the damper in the closed position while marking
the proper angle.
15 Manually open the damper blade on the fresh air intake
box and let the spring return on the damper motor close
the damper blade. If necessary, loosen the setscrew on
the coupling and adjust the damper blade until the spring
will close the damper blade, then retighten the setscrew.
16 The 24 VAC air damper actuator contains 2 yellow
wires. One wire connects to the air damper control’s
24 VAC power wire. The other wire connects to neutral.
Power consumption = 10 VA.
Figure 2: Damper Motor Kit Installed in Unit