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INTRODUCTION
Congratulations on the purchase on your new furnace!
With our dedication to quality, superior reliability, and
outstanding warranty, we know you will be pleased with this
new appliance. This furnace has been designed and built to
provide many years of safe and dependable home comfort,
providing it is properly installed and regular maintenance has
been performed. Improper use or insufficient maintenance
can shorten the life of the furnace and result in serious
personal injury or property damage. Please read this manual
thoroughly and familiarize yourself with the safety, operation
and maintenance procedures for this furnace. DO NOT
DESTROY THIS MANUAL. KEEP IN A SAFE PLACE FOR
FUTURE REFERENCE.
Your furnace is designed to fulfill the requirements of being
classified as a Category I furnace. This classification is
related to the furnace’s Annual Fuel Utilization Efficiency
(AFUE) rating, the percentage of fuel that is converted into
usable heating energy. Category I furnaces typically have
an AFUE rating of about 80% and may be vented through
a properly designed metal vent or masonry chimney. This
venting system needs to be primarily vertical, so that the
hot combustion products will develop a natural upwards
draft action.
The furnace components shown in Figure 1 will help to identify
and locate various parts of the furnace. The component you
need to familiarize yourself with is the gas valve. You will
use this to turn the furnace on and off.
There are no user
serviceable parts. All repairs must be performed by a
licensed HVAC technician.
FILTER
WARNING:
Never operate the furnace without a filter in place.
Accumulating dust in the return air can build up on
internal components, resulting in loss of efficiency,
equipment damage, and possible fire.
•
Air filter(s) are not supplied with the furnace as shipped
from the factory.
The installer must provide a high velocity
filter and rack for a filter in the return air duct adjacent to
the furnace, or in a return air grill to the furnace.
• The furnace should always have a clean filter located either
at the air return on the furnace or in an air return register.
If the filter becomes dirty, it should be cleaned or replaced.
• New or newly renovated homes may require more frequent
changing until the construction dust has minimized. Filters
designed to remove smaller particles such as pollen, may
require additional maintenance.
• Always reinstall the doors on the furnace after servicing or
cleaning/changing the filters.
Do not operate the furnace
without all doors and covers in place.
THERMOSTAT
• This single stage furnace should be controlled by a
conventional single stage thermostat.
FURNACE LOCATION
If a furnace is installed in relatively small utility room or closet,
the installation needs openings in the walls or door to let
combustion air in. Make sure that these openings remain
unobstructed. Do not modify these openings in any way
without consulting a licensed HVAC technician.
ABOUT THE FURNACE
Furnace
Control
Board
Combustion Air
Orifice Plate
Air / Fuel
Mixing Tube
Blower
Assembly
Blower Door
Switch
Gas Burner
Head
Gas Valve
Pressure
Switch
Main Air
Limit Switch
Inducer
Assembly
Transformer
Blocked Vent
Limit Switch
Figure 1. G8SA Furnace Components
