2
SAFETY INFORMATION .............................................4
REQUIREMENTS AND CODES ..................................4
GENERAL INSTRUCTIONS ........................................5
Combustion Air Quality ...........................................5
Operation of Furnace During Construction .............5
Installation in a Garage ...........................................6
Heating
Load
...........................................................6
Clearances to Combustible Materials .....................6
COMBUSTION AIR REQUIREMENTS ........................6
General
Information
................................................6
Installation in a Confi ned Space ..............................7
Outdoor Air Using Vertical Ducts ........................7
Outdoor Air Using Horizontal Ducts ...................7
Outdoor Air Using a Crawl Space or
Vented
Attic
........................................................7
Air Directly Through an Exterior Wall .................8
Alternate Method of Providing Air from
Outside
...............................................................8
Air From Inside ...................................................8
Installation in an Unconfi ned Space ........................8
FURNACE INSTALLATION .........................................9
General
Requirements
............................................9
Upfl
ow
Installation
...................................................9
Side Return Air Inlet ...........................................9
Bottom Return Air Inlet .......................................9
Horizontal
Installation
..............................................9
Bottom Panel Removal .....................................10
Downfl
ow
Installation
............................................10
Installation on a Concrete Slab ........................10
VENTING REQUIREMENTS ......................................12
Category
I
Venting
.................................................12
Horizontal
Venting
..................................................13
Flexible
Vent
Systems
............................................13
CIRCULATING AIR REQUIREMENTS ......................13
Plenums and Air Ducts ..........................................13
Supply Air Connections .........................................14
Upfl
ow/Horizontal
Furnaces
..............................14
Downfl ow Furnaces ...........................................14
Return Air Connections .........................................14
Upfl
ow/Horizontal
Furnaces
..............................14
Side Return Installations ................................14
Bottom Return Installations ............................14
Downfl ow Furnaces ...........................................14
Acoustical
Treatments............................................14
GAS SUPPLY AND PIPING .......................................15
Leak
Check
...........................................................15
High-Altitude
Application
.......................................15
Conversion to LP/Propane ....................................16
ELECTRICAL WIRING ...............................................17
Low
Voltage
Wiring
................................................17
Line
Voltage
Wiring
................................................17
Grounding
..............................................................18
Twinning
.................................................................18
START-UP & ADJUSTMENTS ...................................18
Pre-Start
Checklist
................................................18
Start-Up
Procedures
..............................................18
Verifying and Adjusting Input Rate ........................18
TABLE OF CONTENTS
Содержание 045C-23ASA
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