RT-SVX092A-EN
59
be terminated in the control box at main panel power
terminal block (HTB1).
NOTICE
Equipment Damage!
Failure to follow instructions below could result in
equipment damage.
Properly and completely seal all conduit, conduit
openings, and factory through-the-base electrical
(TBUE) penetrations to prevent building air from
entering unit and causing water damage from
condensation.
• Provide proper grounding for the unit in accordance
with local and national codes. Refer to Table 16, p. 58
for ground wire torque.
Notes:
• Black gasket is shipped from the factory and is
located in the literature ship-with bag in the
control box. Apply black gasket around conduit
plate on all four sides after installation to
prevent air leakage from the building entering
the electrical enclosures.
• Seal any unused unit penetrations and around
conduit and wiring at all unit and curb
penetrations.
• Seal any unused conduit openings, around all
conduit and wiring within conduit, and any
openings that would allow air leakage from the
building entering the equipment electrical
enclosures.
• Installer provided sealants may be needed to
completely seal openings.
Field-Installed Control Wiring
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
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/national
electrical codes.
An overall layout of the various control options available
with the required number of conductors for each control
device is illustrated in the wiring diagram located on main
control box door.
All field wiring must conform to NEC guidelines as well as
state and local codes.
Control Power Transformer
The 24 volt control power transformers are to be used only
with the accessories called out in this manual.
Transformers rated greater than 50 VA are equipped with
internal circuit breakers. If a circuit breaker trips, turn OFF
all power to the unit before attempting to reset it.
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
The transformers are located in the control panel. The
circuit breaker is located on the right side of the transformer
and can be reset by pressing in on the black reset button.
Controls using 24 Vac
Before installing any connecting wiring, refer to the
Dimensions and Weights chapter for the electrical access
locations provided on the unit and Table 17, p. 60 for AC
conductor sizing guidelines, and;
1. Use copper conductors unless otherwise specified.
2. AC control wiring between the controls and the unit
termination point should not exceed 2.5 ohms/
conductor for the length of the run.
Installation
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