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N80ESN/N80ESL(Series A): Installation, Start–Up, Operating and Service and Maintenance Instructions
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical
disconnect switch must be in the OFF position and install a lockout tag.
There may be more than one disconnect switch. Lock out and tag
switch with a suitable warning label.
servicing.
CAUTION
!
ELECTRICAL OPERATION HAZARD
Failure to follow this caution may result in improper furnace operation
or failure of furnace.
Label all wires prior to disconnection when servicing controls. Wiring
errors can cause improper and dangerous operation.
GENERAL
These instructions are written as if the furnace is installed in an upflow
application. An upflow furnace application is where the blower is
located below the combustion and controls section of the furnace, and
conditioned air is discharged upward. Since this furnace can be installed
in any of the 4 positions (see
Fig.
component location accordingly.
ELECTRICAL CONTROLS AND WIRING
The electrical ground and polarity for 115-v wiring must be properly
maintained. Refer to
Fig. 24
for field wiring information and to
furnace wiring information.
WARNING
!
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or death.
There may be more than one electrical supply to the furnace. Check
accessories and cooling unit for additional electrical supplies that must
be shut off during furnace servicing. Lock out and tag switch with a
suitable warning label.
NOTE: If the polarity is not correct, the STATUS LED on the control
will flash rapidly and prevent the furnace from heating. The control
system also requires an earth ground for proper operation of the control
and flame-sensing electrode.
The 24-v circuit contains an automotive-type, 3-amp. fuse located on the
control (see
Fig.
28). Any shorts of the 24-v wiring during installation,
service, or maintenance will cause this fuse to blow. If fuse replacement
is required, use ONLY a 3-amp. fuse. The control LED will display off
when fuse needs to be replaced.
Proper instrumentation is required to service electrical controls. The
control in this furnace is equipped with a Status Code LED
(Light-Emitting Diode) to aid in installation, servicing, and
troubleshooting. Status codes can be viewed at the sight glass in blower
access door. The furnace control LED is either ON continuously,
flashing a heartbeat, or a status code.
For an explanation of status codes, refer to service label located on
blower access door, or
Fig. 44
be obtained from your distributor.
See
Fig. 51
for a brief Troubleshooting Guide.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Verify proper operation after
5), you must revise your orientation to
and the troubleshooting guide which can
CARE AND MAINTENANCE
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death
and/or property damage.
Never store anything on, near, or in contact with the furnace, such as:
1.Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners, or
other cleaning tools.
2.Soap powders, bleaches, waxes or other cleaning compounds, plastic
or plastic containers, gasoline, kerosene, cigarette lighter fluid, dry
cleaning fluids, or other volatile fluids.
3.Paint thinners and other painting compounds, paper bags, or other
paper products.
For continuing high performance and to minimize possible equipment
failure, periodic maintenance must be performed on this equipment.
Consult your local dealer about proper frequency of maintenance and the
availability of a maintenance contract.
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Turn off the gas and electrical supplies to the unit and install lockout tag
before performing any maintenance or service. Follow the operating
instructions on the label attached to the furnace.
Fig.
for
CARBON MONOXIDE POISONING AND FIRE
HAZARD
Failure to follow this warning could result in personal injury, death
and/or property damage.
Never operate unit without a filter or with filter access door removed.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear
appropriate protective clothing, safety glasses and gloves when
handling parts and servicing furnaces.
The minimum maintenance on this furnace is as follows:
1. Check and clean/replace air filter each month or more frequently if
required. Replace if torn.
2. Check blower motor and wheel for cleanliness each heating and
cooling season. Clean as necessary.
3. Check electrical connections for tightness and controls for proper
operation each heating season. Service as necessary.
4. Inspect burner compartment before each heating season for rust,
corrosion, soot or excessive dust. If necessary, have furnace and
burner serviced by a qualified service agency.
5. Inspect the vent pipe/vent system before each heating season for
rust, corrosion, water leakage, sagging pipes or broken fittings.
Have vent pipes/vent system serviced by a qualified service agency.
6. Inspect any accessories attached to the furnace such as a humidifier
or electronic air cleaner. Perform any service or maintenance to the
accessories as recommended in the accessory instructions.
31
WARNING
!
WARNING
!
WARNING
!
CAUTION
!
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