Goodman ACES80 Series, Service And Troubleshooting

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SYSTEM OPERATION
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Even if none of those three conditions exist which require
additional liner insulation, the installer may wish to consider
it if:
•
• The local climate is very cold.
• • The chimney is very tall.
• • The vent connectors used are very long or have a large
number of elbows.
• • Local experience indicates that flexible liners installed
without insulation are likely to have condensation
problems.
Insulation must be selected and installed in accordance with
the liner manufacturer’s instructions.
Finally, cap the chimney and terminate the liner in accordance
with the liner manufacturer’s instructions.
Horizontal Applications and Considerations
Horizontal applications, in particular, may dictate many of
the installation’s specifics such as airflow direction, ductwork
connections, and flue pipe connections.
Alternate Electrical and Gas Line Connections
Furnaces have provisions allowing for electrical and gas
line connections through either side panel. In horizontal
applications the connections can be made either through the
“top” or “bottom” of the furnace.
Propane Gas and/or High Altitude Installations
WARNING
P
O SS IBLE P R OPE R TY DAMAGE, PE RS ONAL IN J U R Y O R DEATH MAY OCCU R IF
THE CO RR ECT CONVE RS ION K IT S A R E NOT IN S TALLED.
T
HE APP R OP R IATE K IT S
MU S T BE APPLIED TO IN S U R E S AFE AND P R OPE R FU R NACE OPE R ATION.
A
LL
CONVE RS ION S MU S T BE PE R FO R MED BY A Q UALIFIED IN S TALLE R O R S E R VICE
AGENCY.
This furnace is shipped from the factory configured for natural
gas at standard altitude. Propane gas installations require
an orifice change to compensate for the energy content
difference between natural and propane gas.
High altitude installations may require both a pressure switch
and an orifice change. These changes are necessary to
compensate for the natural reduction in the density of both
the gas fuel and the combustion air at higher altitude.
Refer to the
Accessories Charts
in this manual or product
Specification Sheet for a tabular listing of appropriate
manufacturer’s kits for propane gas and/or high altitude
installations. The indicated kits must be used to insure
safe and proper furnace operation. All conversions must be
performed by a qualified installer, or service agency.
WARNING
F
AILU R E TO FOLLOW THE S E IN S T R UCTION S CAN R E S ULT IN BODILY IN J U R Y O R
DEATH.
C
A R EFULLY R EAD AND FOLLOW ALL IN S T R UCTION S GIVEN IN THI S
S ECTION.
WARNING
U
PON COMPLETION OF THE FU R NACE IN S TALLATION, CA R EFULLY IN S PECT THE
ENTI R E FLUE S Y S TEM BOTH IN S IDE AND OUT S IDE THE FU R NACE TO A SS U R E IT
I S P R OPE R LY S EALED.
L
EA KS IN THE FLUE S Y S TEM CAN R E S ULT IN S E R IOU S
PE RS ONAL IN J U R Y O R DEATH DUE TO E X PO S U R E TO FLUE P R ODUCT S ,
INCLUDING CA R BON MONO X IDE.
GAS SUPPLY AND PIPING
The furnace rating plate includes the approved furnace gas
input rating and gas types. The furnace must be equipped
to operate on the type of gas applied. This includes any
conversion kits required for alternate fuels and/or high altitude.
CAUTION
T
O P R EVENT UN R ELIABLE OPE R ATION O R E Q UIPMENT DAMAGE, THE INLET
GA S S UPPLY P R E SS U R E MU S T BE A S S PECIFIED ON THE UNIT R ATING PLATE
WITH ALL OTHE R HOU S EHOLD GA S FI R ED APPLIANCE S OPE R ATING.
Inlet gas supply pressures must be maintained within the
ranges specified below. The supply pressure must be constant
and available with all other household gas fired appliances
operating. The minimum gas supply pressure must be
maintained to prevent unreliable ignition. The maximum must
not be exceeded to prevent unit overfiring.
Natural Gas Minimum: 4.5" w.c. Maximum: 10.0" w.c.
Propane Gas Minimum: 11.0" w.c. Maximum: 13.0" w.c.
INLET GAS SUPPLY PRESSURE
HIGH ALTITUDE DERATE
When this furnace is installed at high altitude, the appropriate
High Altitude orifice kit must be applied. This is required due
to the natural reduction in the density of both the gas fuel and
combustion air as altitude increases. The kit will provide the
proper design certified input rate within the specified altitude
range.
High altitude kits are purchased according to the installation
altitude and usage of either natural or propane gas. Refer
to the product Specification Sheet or Technical Manual
for a tabular listing of appropriate altitude ranges and
corresponding manufacturer’s high altitude (Natural, Propane
gas, and/or Pressure Switch) kits.
Do
not derate the furnace by adjusting the manifold pressure
to a lower pressure than specified on the furnace rating plate.
The combination of the lower air density and a lower manifold
pressure will prohibit the burner orifice from drawing the proper
amount of air into the burner. This may cause incomplete
combustion, flashback, and possible yellow tipping.
In some areas the gas supplier may artificially derate the gas
in an effort to compensate for the effects of altitude. If the
gas is artificially derated, the appropriate orifice size must be
determined based upon the BTU/ft
3
content of the derated
gas and the altitude. Refer to the National Fuel Gas Code,
NFPA 54/ANSI Z223.1, and information provided by the gas
supplier to determine the proper orifice size.