Installation
RT-SVX22M-EN
29
Return Air Smoke Detector
The factory installed Return Air Smoke Detector is
installed in the downflow discharge position. No
additional field setup is required.
If a unit is to be converted to horizontal discharge, the
following conversion must be performed:
1.
If the unit has an economizer, it must be pulled out in
the operating position.
2. Remove the 3 screws from the mounting brackets.
Note:
Refer to downflow view for screw locations.
3. Lift the tube and bracket from the downflow duct
opening. Rotate the tube and bracket assembly 180
degrees ensuring that the holes on the copper sensing
tube face away from the unit and face the return air
ductwork.
Note:
Refer to horizontal views below.
Note:
Check to insure that the flexible tubing lies flat on
the base pan surface.
4. Slide the top bracket down the copper sensing tube.
For TSC036E-060E, and THC036-037E units insert the
tab on the left side into the slot on the indoor coil block
off and secure the right side of the bracket with one of
the 3 screws removed in step 2. Refer to
Figure 33,
p. 29
. For THC047E-120E, THC048F-092F, and TSC072F-
120F units secure the tab on left side to the indoor coil
block off with one of the screws removed in step 2 and
secure the right side of the bracket with one of the
screws removed from the access panel. Refer to
Figure 34, p. 29
.
5. Using the remaining 2 screws removed in step 2,
secure the bottom bracket. Refer to
Figure 33, p. 29
.
Note:
Larger diameter holes on bottom bracket line up
with the dimples on the rear panel. The smaller
diameter holes line up with the screw holes in the
rear panel.
Main Electrical Power Requirements
Figure 32.
Downflow view
Figure 33.
Horizontal view 1
Figure 34.
Horizontal view 2
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. Verify with an appropriate
voltmeter that all capacitors have discharged. Failure to
disconnect power and discharge capacitors before
servicing could result in death or serious injury.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06A-EN
4
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