ATTENTION INSTALLING PERSONNEL
As a professional installer, you have an obligation to know
the product better than the customer. This includes all safety
precautions and related items.
Prior to actual installation, thoroughly familiarize yourself
with this Instruction Manual. Pay special attention to all
safety warnings. Often during installation or repair, it is
possible to place yourself in a position which is more
hazardous than when the unit is in operation.
Remember, it is
your
responsibility to install the product
safely and to know it well enough to be able to instruct a
customer in its safe use.
Safety is a matter of common sense...a matter of thinking
before acting. Most dealers have a list of specific, good
safety practices...follow them.
The precautions listed in this Installation Manual are
intended as supplemental to existing practices. However,
if there is a direct conflict between existing practices and
the content of this manual, the precautions listed here take
precedence.
Installer: Affix all manuals
adjacent to the unit.
These furnaces comply with requirements embodied in the
American National Standard/National Standard of Canada
ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces.
IOG-2031
09/2021
Installation Instructions for
*M9S80*U Ultra Low NOx Gas Furnace
CATEGORY I CATÉGORIE I
TABLE OF CONTENTS
SAFETY CONSIDERATIONS ....................................................... 3
Shipping Inspection ...........................................................
5
Electrostatic Discharge (ESD) Precautions .........................
5
To The Installer ..................................................................
6
PRODUCT APPLICATION ...........................................................
6
LOCATION REQUIREMENTS AND CONSIDERATIONS ................ 7
Clearances and Accessibility..............................................
8
Installation Positions .........................................................
8
Horizontal Installation .......................................................
8
Furnace Suspension .......................................................... 9
Existing Furnace Removal .................................................. 9
Thermostat Location ......................................................... 9
COMBUSTION AND VENTILATION AIR REQUIREMENTS ........ 10
CATEGORY I VENTING (VERTICAL VENTING) .......................... 10
MASONRY CHIMNEYS ............................................................ 11
Masonry Chimney Termination ....................................... 11
ELECTRICAL CONNECTIONS ................................................... 11
Wiring Harness ................................................................ 11
120 Volt Line Connections ............................................... 11
Junction Box Relocation .................................................. 11
24 Volt Thermostat Wiring .............................................. 12
120 Volt Line Connection of Accessories ........................ 12
Humidifier and Electronic Air Cleaner ............................. 12
Fossil Fuel Applications ................................................... 13
GAS SUPPLY AND PIPING ....................................................... 13
High Altitude Derate ....................................................... 13
Gas Piping Connections ................................................... 13
Upflow Installations ........................................................ 14
Gas Piping Checks ........................................................... 14
CIRCULATING AIR AND FILTERS ............................................. 15
R
ECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION
NOTE
: Please contact your distributor or our website listed below
for the applicable Specification Sheet referred to in this manual.
Only personnel that have been trained to install, adjust, service
or repair (hereinafter, “service”) the equipment specified in
this manual should service the equipment. The manufacturer
will not be responsible for any injury or property damage
arising from improper service or service procedures. If you
service this unit, you assume responsibility for any injury or
property damage which may result. In addition, in jurisdictions
that require one or more licenses to service the equipment
specified in this manual, only licensed personnel should service
the equipment. Improper installation, adjustment, servicing or
repair of the equipment specified in this manual, or attempting
to install, adjust, service or repair the equipment specified in
this manual without proper training may result in product
damage, property damage, personal injury or death.
19001 Kermier Rd. Waller, Tx 77484
www.goodmanmfg.com • www.amana-hac.com
© 2021 Goodman Manufacturing Company, L.P.
is a registered trademark of Maytag Corporation or its related companies and is
used under license. All rights reserved.
WARNING
DO NOT BYPASS SAFETY DEVICES
