High Altitude Derate; Propane Gas Conversion; Gas Piping Connections - Amana M8 Installation Instructions Manual

INLET GAS SUPPLY PRESSURE
Natural Gas Minimum: 4.5" w.c.
Propane Gas Minimum: 11.0" w.c.
NOTE: Adjusting the minimum supply pressure below the limits in
the above table could lead to unreliable ignition. Gas input to the
burners must not exceed the rated input shown on the rating plate.
Overfiring of the furnace can result in premature heat exchanger
failure. Gas pressures in excess of 13 inches water column can
also cause permanent damage to the gas valve.
At all altitudes, the manifold pressure must be within 0.3 inches
w.c. of that listed in the Specification Sheet applicable to your
model for the fuel used. At all altitudes and with either fuel, the air
temperature rise must be within the range listed on the furnace
nameplate. Should this appliance be converted to LP, refer to the
instructions included in the factory authorized LP conversion kit.
H A D
IGH LTITUDE ERATE
IMPORTANT NOTE: The furnace, as shipped, requires no change to
run between 0 - 5500 feet. Do not attempt to increase the firing rate
by changing orifices or increasing the manifold pressure below
5500 feet. This can cause poor combustion and equipment failure.
High altitude installations above 5500 feet may require both a
pressure switch and an orifice change. These changes are neces-
sary to compensate for the natural reduction in the density of both
the gas fuel and the combustion air at higher altitude.
For installations above 5500 feet, please refer to your distributor
for required kit(s).
Contact the distributor for a tabular listing of appropriate
manufacturer's kits for propane gas and/or high altitude installa-
tions. The indicated kits must be used to insure safe and proper
furnace operation. All conversions must be performed by a quali-
fied installer, or service agency.
P G C
ROPANE AS ONVERSION
P
OSSIBLE PROPERTY DAMAGE
OCCUR IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED
APPROPRIATE KITS MUST BE APPLIED TO ENSURE SAFE AND PROPER
. A
FURNACE OPERATION LL CONVERSIONS MUST BE PERFORMED BY A
QUALIFIED INSTALLER OR SERVICE AGENCY
This unit is configured for natural gas. The appropriate
manufacturer's propane gas conversion kit, must be applied for
propane gas installations. Refer to the "Propane Gas and/or High
Altitude Installations" section for details.
If converting to LP gas, it is recommended that an LPLP0* kit also
be installed. The use of this kit will prevent the furnace from firing
when the LP gas supply pressure is too low to support proper
combustion.
Maximum: 10.0" w.c.
Maximum: 13.0" w.c.
WARNING
,
PERSONAL INJURY OR DEATH MAY
.
Models using Single Stage Gas Valves
Altitude
Natural
0 - 5500
Propane
NOTE: *MS81405DN** models utilize #43 orifices in Natural gas
applications.
Models using 2-Stage Gas Valves
Gas Altitude
Natural
0 - 5500
Propane
NOTE: *MH81405DN** models utilize #43 orif ices in Natural gas
applications.
Contact your distributor for a tabular listing of appropriate
manufacturer's kits for propane gas and/or high altitude installa-
tions. The indicated kits must be used to insure safe and proper
furnace operation. All conversions must be performed by a quali-
fied installer, or service agency.
G P C
AS IPING ONNECTIONS
T
O AVOID POSSIBLE UNSATISFACTORY OPERATION
DAMAGE DUE TO UNDERFIRING OF EQUI
. T
HE
/
OF NATURAL
/
THE METER TANK TO THE FURNACE
When sizing gas lines, be sure to include all appliances which will
operate simultaneously.
The gas piping supplying the furnace must be properly sized based
on the gas flow required, specific gravity of the gas, and length of
the run. The gas line installation must comply with local codes, or
in their absence, with the latest edition of the National Fuel Gas
Code, NFPA 54/ANSI Z223.1.
17
Gas Kit Orifice
None #45
LPT-03 #55
M anifold Pre s s ur e
Kit Orifice
High
Stage
None #45 3.5" w .c.
LPM-06 #55 10.0" w .c.
WARNING
PMENT
PROPANE GAS PIPING NEEDED WHEN RUNNING PIPE FROM
.
Manifold Pressure
Pressure Sw itch
3.5" w .c.
None
10.0" w .c.
Pre s s ure
Sw itch
Low
Change
Stage
1.9" w .c. None
6.0" w .c. None
OR EQUIPMENT
,
USE THE PROPER SIZE