RT-SVX077B-EN
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☐ Check the unit for shipping damage and material
shortage. File a freight claim and notify appropriate
sales representative.
☐ Verify correct model, options, and voltage from unit
nameplate.
☐ Verify the installation location of the unit will provide the
required clearance for proper operation.
☐ Assemble and install the roof curb (if applicable). Refer
to the latest version of the curb installation instructions
that ships with each curb kit.
☐ Fabricate and install ductwork. Secure ductwork to
curb.
☐ If applicable, install pitch pocket for power supply
through building roof.
☐ Rig the unit.
☐ Set the unit on the curb and verify the unit is level.
☐ Confirm unit-to-curb seal is tight, without buckles or
cracks.
☐ Install and connect a condensate drain line to the
evaporator drain connection.
Factory Installed Economizer
• Confirm the economizer has been pulled out into the
operating position. Refer to the economizer installation
instructions for proper position and setup.
• Install all access panels.
External Vent Hood Installation
Note: This procedure applies to 12.5 to 25 tons gas heat
models.
1. Remove and discard the cover plate located on the gas
heat panel.
Important:
• Read the label located on the cover plate
before discarding.
• Do not discard the fastening screws! They
will be needed to install the vent hood.
Figure 16. Discard cover plate
2. Locate the vent hood behind the panel.
Figure 17. Vent hood shipping location
Note: The above figure shows two-stage gas. Modulating
gas is similar.
3. Install the vent hood on the gas heat panel using the
screws removed in Step 1 and secure to the panel.
Installation
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