La Nomina

Residential Gas Furnaces

Installation Instructions
*RA Full Size Series 80+ High Efficiency Upflow/Horizontal *RK Full Size Series 80+ High Efficiency Downflow

*RA 80+ Upflow/Horizontal

*RK 80+ Downflow

! WARNING:
Improper installation, adjustment, alteration, service, or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional informationconsult a qualified installer, service agency, or the gas supplier. • •

WHAT TO DO IF YOU SMELL GAS:
Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions. If you cannot reach your gas supplier, call the fire department. Extinguish any openflame.

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! FOR YOUR SAFETY:
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

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These instructions are primarily intended to assist qualified individuals experienced in the proper installation of this appliance. Some local codes require licensed installation/service personnel for this type of equipment. Read allinstructions carefully before starting the installation.

Table of Contents
Furnace Specifications ................................................................................................................. 4-5 Upflow/Horizontal Models ....................................................................................................... 4 Downflow Models.................................................................................................................... 5 Capacities-Furnace Airflow Data ........................................................................................ 6-7 Safety Information ............................................................................................................................. 8 Installation Requirements............................................................................................................ 8-9 Supply Air Plenum Installation ..................................................................................................... 10 Installation on a Concrete Slab ........................................................................................... 10 Installation on a Combustible Floor.................................................................................... 10 Venting and Combustion Air Requirements ................................................................................ 11 General ................................................................................................................................. 11 Installation in an Unconfined Space................................................................................... 11 Installation in a Confined Space ......................................................................................... 12 Horizontal Furnace Installation ................................................................................... 12 Air From Inside............................................................................................................. 13 Outdoor Air Using Vertical Ducts ................................................................................ 13 Air Directly Through an Exterior Wall .......................................................................... 13 Outdoor Air Using A Crawl Space and Ventilated Attic ............................................ 14 Outdoor Air ThroughHorizontal Ducts ....................................................................... 14 Venting Requirements .................................................................................................................... 14 General ................................................................................................................................. 14 Category I - Common...