Installation
RT-SVX50F-EN
17
•
Ensure unit-to-curb seal is tight and without buckles or
cracks.
•
Install and connect a condensate drain line to the
evaporator drain connection.
Factory Installed Economizer
•
Ensure the economizer has been pulled out into the
operating position. Refer to the standard or low leak
economizer Installation Instructions for proper
position and setup.
•
Install all access panels.
Controller Wiring Schematic - LLE
For additional information, go to the Installation
Instructions ACC-SVN178*-EN.
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.
Note:
All field-installed wiring must comply with NEC
and applicable local codes.
Note:
This procedure applies only to medium and high
heat options, not to the low heat option.
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.
Note:
Use 1" PVC pipe to connect to the drain pan outlet
provided 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
drain 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 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 filter access panel.
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.