Installation
RT-SVX055D-EN 15
• Ensure unit-to-curb seal is tight and without buckles or
cracks.
• Install and connect a condensate drain line to the
eva
porator dra
in connection.
Main Electrical Power Requirements
• Verify that the power supply complies with the unit
nameplate specifications.
• Inspect all control panel components; tighten any
lo
ose conn
ections.
• Connect properly sized and protected power suppl
y
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.
Note: Al
l field-installed wiring must comply with NEC
and applicable local codes.
Electric Heat Requirements
• Verify that the power supply complies with the electric
heater specifications on the unit and heater nameplate.
• Inspect the heater junction box and control panel;
tighten any loose connec
tions.
• Check electric heat circuits for
continuity.
• Low
Voltage Wiring (AC and DC) Requirements
• Install the zone thermostat, w
ith or without switching
su
bbase.
• Connect properly sized control wiring to the proper
termination po
ints between the zone thermostat and
the unit control panel.
Condensate Drain Configuration
An evaporator condensate drain connection is provided
on each unit. Refer to “Dimensional Data,” p. 8 for the
appropri
ate drain location.
Note: Use 1" PVC pipe to connect to the drain pan outlet
pr
ovided in the unit. This is a slip fit joint (no
threads) and can be sealed using PVC Cement or
other suitable adhesive.
A condensate trap must be installed at the unit
due to the
dr
ain connection being on the “negative pressure” side of
the fan.
A condensate drain line must be connected
to the P-Trap.
Pitch the drain lines at le
ast ½-inch for every 10 feet of
horizontal run to assure proper condensate flow. Do not
allow the horizontal run to sag causing a possible double-
trap condition which could result in condensate backup
due to “air lock”.
Filter Installation
Each unit ships with 2-inch filters installed. The quantity of
filters is determined by unit size. Access to the filters is
obtained by removing the filter access panel.
Refer to the unit Service Facts (shi
pped w
ith each unit) for
filter requirements.
Note: Do not operate the
unit without filters.
Field Installed Power Wiring
An overall dimensional layout for the standard field
installed wiring entrance into the unit is illustrated in
“Dimensional Data,” p. 8. To insure that the unit’s supply
power wiring is
properly sized and installed, follow the
guidelines outlined below.
Note: All field installed wiring must conform to NEC
guidelines as well as
state and Local codes.
Verify that the power supply ava
ilable is comp
atible with
the unit’s nameplate ratings. The available supply power
must be within 10 percent of the rated voltage stamped on
the nameplate. Use only copper conductors to connect the
power supply to the unit.
NOTICE
Use Copper Conductors Only!
Unit terminals are not designed to accept other types of
conductors. Failure to use copper conductors could
result in equipment damage.
Note: If the un
it is not equipped with an optional factory
installed nonfused disconnect switch or circuit
breaker, a field supplied disconnect switch must be
installed at or near the unit in accordance with the
National Electrical Code (NEC latest edition).
Main Unit Power
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.
Standard Wiring
The electrical service must be protected from over current
and short circuit conditions in accordance with NEC
requirements.
Protection devices must be sized according to th
e
electrical data on the nameplate.
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