Installation
36 RT-SVX21AC-EN
Note: Cable ties must be removed to allow the cable to
extend to the horizontal mounting location.
Main Electrical Power
Requirements
Verify that the power supply complies with the unit
nameplate specifications.
• Inspect all control panel components; tighten any
loose connecti
ons.
• Connect properly sized and protected power supply
wiring to a field-su
pplied/in
stalled disconnect switch
and to the main power terminal block (HTB1) in the unit
control panel.
• Install proper grounding wires to an earth ground.
Through-the-Base Gas
Installation
Note: Through-the-Base Gas is not available with Low
NOx gas furnace option, digit 34 = A.
The gas supply line must extend 4⅝” a
bove the
base pan.
The “Through-the-Base Gas” kit is located in the heat
vestibule compartment. To gain access to the kit, remove
the Heat Compartment access panel.
1. Remove the pipe assembly strapped to the manifold.
Unscre
w 90° elbow
from 6½” nipple and slide rubber
grommet off of nipple.
2. Remove the plastic plug from
the hole in
the center
post and insert the grommet removed from
6½” pipe nipple.
3. Using pipe sealant, attach the 90° elbow to the gas
supply li
ne.
4. Disconnect the 5" pipe nipple and union from the
“T
hrough-the-
Base Gas” kit assembly.
5. Using pipe sealant, attach the 6½” nipple and gas
shutoff assembly to the 90°
elbow on the gas supply
line.
6. Using pipe sealant, attach th
e 5" pipe ni
pple and union
to the street el attached to the gas valve.
7. Connect 5" pipe nipple and union to 6½” nipple and
gas shutoff assembly.
Figure 54. W
ireless communication interface -
horizontal
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
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.
For additional information regarding the safe discharge
of capacitors,
see PROD-SVB06*-EN.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. 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.
Figure 55. Typical through-the-base gas installation
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