SYSTEM OPERATION
8
R S SRS S X
R R XS RS S RR RS
JR R SS
–
D
O NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND
LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE.
–
S
S
•
D
O NOT TRY TO LIGHT ANY APPLIANCE.
•
D
O NOT TOUCH ANY ELECTRICAL SWITCH; DO NOT USE ANY
PHONE IN YOUR BUILDING.
•
I
MMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR’S
PHONE.
F
OLLOW THE GAS SUPPLIER’S INSTRUCTIONS.
•
I
F YOU CANNOT REACH YOUR GAS SUPPLIER, CALL THE FIRE
DEPARTMENT.
–
I
NSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER,
SERVICE AGENCY OR THE GAS SUPPLIER.
The furnace, as shipped, requires no change to run between
0-4500 feet. At all altitudes the air temperature rise must be
within the range listed on the Specication Sheet ap¬plicable
to your model for the fuel used. Manifold pressure adjustments
and combustion analysis are required for all installations
above 4500 ft. Refer to “Gas Supply Pressure Measurement”
section for instruction on how to properly measure and adjust
manifold “outlet” pressure. The furnace should operate for a
minimum of 15 minutes before taking a combustion sample.
Combustion samples should be taken from beyond the
furnace exhaust and must be within provided CO2% range.
See table below for recommended manifold pres¬sure
adjustments and proper CO2% range. Gas heating val¬ues
can vary; further pressure adjustment may be necessary to
ensure furnace operates within acceptable CO2 range.
These ID plugs update the
furnace parameters to allow it to function properly at High
Altitude. ULN Single Speed 80% furnaces with serial numbers
2004 and after are approved for High Altitude installation
without the ID plug update. ULN 80% furnace with serial
numbers 2003 and prior will need this ID plug to operate at
High Altitude. You will still need to adjust manifold pressures
and CO2% as described above. See the table below for the
corresponding model number to ID Plug part number.
GMES800403AU 0130F00773 0130F00785
GMES800603BU 0130F00765 0130F00787
GMES800604BU 0130F00766 0130F00788
GMES800804BU 0130F00767 0130F00789
GMES800805CU 0130F00768 0130F00790
80% ULN ID Plugs
Not rated for high
altitude
80% ULN ID Plugs
Rated for altitude
up to 7500 ft
An optional kit is available (TSRK02) to provide
low and high cooling speeds to support operation of a two
stage cooling unit
RSK R SK R S
RR R R
S
R R SR R
S S
R SRS
RS
R S S RR
RS JR R
RS RR S SR RS
R RRRS S RR RS R
R RR R R SR
The wiring harness is an integral part of this furnace. Field
alteration to comply with electrical codes should not be
required. Wires are color coded for identication purposes.
Refer to the wiring diagram for wire routings. If any of the
original wire as supplied with the furnace must be replaced,
it must be replaced with wiring material having a temperature
rating of at least 105° C. Any replacement wiring must be
copper conductor.
Before proceeding with electrical connections, ensure that
the supply voltage, frequency, and phase correspond to
that specied on the unit rating plate. Power supply to the
furnace must be N.E.C. Class 1, and must comply with all
applicable codes. The furnace must be electrically grounded
in accordance with local codes or, in their absence, with the
latest edition of The National Electric Code, ANSI NFPA 70
and/or The Canadian Electric Code CSA C22.1.
Use a separate fused branch electrical circuit containing
properly sized wire, and fuse or circuit breaker. The fuse or
circuit breaker must be sized in accordance with the maximum
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