Installation
20
RT-SVX26R-EN
Factory Installed Economizer
•
Ensure the standard economizer has been pulled out
into the operating position. Refer to the economizer
Installation Instructions for proper setup.
Note:
Low Leak Economizers do not pull out. Refer to Low
Leak Economizers Installation Instructions for
proper setup.
•
Install all access panels.
Main Electrical Power Requirements
•
Verify that the power supply complies with the unit
nameplate specifications.
•
208VAC units are factory wired for 230VAC. Line side
wiring on TNS1 and TNS3 will need to be moved from
230V terminal to 208V terminal. Factory powered
convenience outlets also need to be configured. Please
see Powered Convenience Outlet Powered Option
(FIYCOPO) section of this document.
•
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.
Note:
All 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 connections.
•
Check electric heat circuits for continuity.
•
Low Voltage Wiring (AC and DC) Requirements
•
Install the zone thermostat, with or without switching
subbase.
•
Connect properly sized control wiring to the proper
termination points between the zone thermostat and
the unit control panel.
Condensate Drain Configuration
An evaporator condensate drain connection is provided
on each unit. Refer to
for the
appropriate drain location.
A condensate trap must be installed at the unit due to the
drain connection being on the “negative pressure” side of
the fan. Install the P-Trap using the guidelines in
.
A condensate drain line must be connected to the P-Trap.
Pitch the drain lines at least 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 indoor fan access panel. If
included, pull on filter removal tool to remove filters.
Refer to the unit Service Facts (shipped with 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
. 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 available is compatible 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.
Note:
If the unit 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).
Figure 11.
Condensate trap installation
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.
