Installation
26
RT-SVX23G-EN
3. Obtain the replacement TCO-A which is secured by a
wire tie near the electric heater terminal block in the
heater compartment. Attach it to the heater element
mounting plate with the two screws that were removed
in step 2 above. Connect the two wires that were un-
hooked in step 2 to the terminals on the new TCO-A.
Refer to the heater package wiring diagram to assure
that the wiring is connected properly.
4. Close the electric heater dead front panel and replace
heat section access panel.
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.
Refer to Downflow View for screw locations.
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,
insert the tab on the left side into the slot on the indoor
coil blockoff and secure the right side of the bracket
with one of the 3 screws removed in step 2.
Note:
Refer to horizontal view.
5. Using the remaining 2 screws removed in step 2,
secure the bottom bracket.
Note:
Refer to horizontal view below.
Main Electrical Power
Requirements
•
Verify that the power supply complies with the unit
nameplate specifications.
•
Inspect all control panel components; tighten any
loose connections.
•
Connect properly sized and protected power supply
wiring to a field-supplied/installed disconnect switch
and to the main power terminal block (HTB1) in the unit
control panel.
•
Install proper grounding wires to an earth ground.
Figure 30.
Downflow view
Figure 31.
Horizontal view
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
WARNING
Proper Field Wiring and Grounding
Required!
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes. Failure to
follow code could result in death or serious injury.
