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OPERATING
YOUR
UNIT
The operation
of your unit is controlled
by the indoor
temperature
control
(thermostat).
Your
gas
heating/electric
cooling
unit
requires
a thermostat
with
2 stages
of cooling
and 1 stage
of
heating.
You simply
adjust
the thermostat
and
it maintains
the
indoor
temperature
at the
level
you
select.
Most
thermostats
of
heating
and cooling
systems
have 3 controls:
a temperature
control
selector,
a FAN control,
and a SYSTEM
or MODE
control.
Refer
to your thermostat
owner's
manual
for more information.
To better
protect
your
investment
and to eliminate
unnecessary
service calls, familiarize
yourself
with the following
facts:
Cooling
Mode
With the SYSTEM
control
set to COOL,
your
unit will run in
cooling
mode
until the indoor
temperature
is lowered
to the level
you have selected.
On extremely
hot days,
your unit will run for
longer
periods
at a time
and have
shorter
"oft"
periods
than on
moderate
days.
Gas Heat Mode
With the SYSTEM
or MODE
control of your indoor
thermostat set
to
HEAT,
your
unit
will
run
in
heating
mode
until
room
temperature
is raised to the level you have selected.
On cold days
and nights,
your
system
will typically
run for longer
periods
of
time and have shorter
"oft" periods
than on moderate
days.
MAINTENANCE
AND SERVICE
This section
discusses
maintenance
that should
be performed
on
your
system.
Most
maintenance
should
be performed
by your
dealer.
You,
as the
owner,
may
wish
to
handle
some
minor
maintenance
for your new unit.
Routine
Maintenance
All routine maintenance
should be handled
by skilled,
experienced
personnel.
Your dealer can help you establish
a standard
procedure.
For your safety, keep
the unit area clear
and free of combustible
materials,
gasoline,
and other flammable
liquids
and vapors.
To assure
proper
functioning
of the unit,
flow
of condenser
air
must not be obstructed
from reaching
the unit. Clearance
from the
top of the unit is 48 in. (1219
ram).
Clearance
of at least 36 in.
(914 ram) is required
on sides except
the power
entry side (42 in.
(1067
ram)
clearance)
and the duct
side
(12
in.
(305 ram)
minimum
clearance).
Also,
ensure
that
the
return-air
duct
connection
(s) is physically
sound,
is sealed
to the furnace
casing,
and terminates
outside
the space containing
the furnace.
Maintenance
and
Care
for
the
Equipment
Owner
Before
performing
equipment
maintenance
yourself,
please
carefully
consider
the following:
FIRE,
EXPLOSION,
ELECTRICAL
SHOCK
AND
CUT HAZARD
Failure
to follow
this warning
could
result
in personal
iniury,
death or property
damage.
1. Turn off gas supply first, then all electrical
power
to your
unit
and install
lock-out
tag before
servicing
or per-
forming
maintenance.
2. When
removing
access
panels
or
performing
maintenance
functions
inside
your
unit,
be
aware
of
sharp sheet metal parts and screws. Although
special care
is taken
to reduce
sharp
edges
to
a n_ininmm,
be
extremely
careful
when
handling
parts
or reaching
into
the
unit.
Wear
safety
glasses,
gloves,
and appropriate
protective
clothing.
Air Filters
The air filter(s) should be checked
every 3 or 4 weeks and
changed
or cleaned whenever
it becomes
dirty. Dirty filters
produce excessive stress on the blower motor and can cause the
motor to overheat and shut down.
This unit must have air filters in place before it can be operated.
These filters can be located in one of at least two places. In many
applications,
the installer will provide
return air filter grilles
mounted on the wall or ceiling of the conditioned structure. In the
instance of filter grilles, the filters can simply be removed from the
grille and replaced.
The other typical application is an accessory filter rack installed
inside the unit itself. The following information is given to assist in
changing filters used in these internal filter racks.
Table 1 indicates the correct indoor filter size for your unit. Refer
to Fig. 2 to access filters installed in the accessory filter rack. If
using an Accessory Filter Rack, refer to the Installation Instructions
provided with it for correct filter sizes and quantities.
Table 1 - Indoor Air Filter Data
Unit Size
Filter
Size
24040
20x20x1
(508x508x25
mm)
24060
20x24x1
(508x610x25
mm)
66
24x60x1
(610x762x25
mm)
48 - 60
24x66x1
(610x914x25
mm)
Flue Hood
Burners
Gas Valve
A12004
Fig. 3 - Gas Heating/Electric
Cooling
[]nit with Access
Panel
Removed
To replace
or inspect filters in accessory
filter rack (See Fig. 2):
1. Remove
the filter access panel using a 5/16-in.
nut driver.
2. Remove
the filter(s)
by pulling
it out of the unit.
If the
filter(s) is dirty, clean or replace with a new one.
When
installing
the new filter(s),
note the direction
of the airflow
arrows on the filter frame.
If you have difficulty
locating
your air filter(s)
or have questions
concerning
proper
filter
maintenance,
contact
your
dealer
for
instructions.
When
replacing
filters, always
use the same size and
type of filter that was supplied
originally
by the installer.
[]NIT
OPERATION
HAZARD
Failure to follow this caution
may result in
property
damage.
Never
operate
your unit without
filters in place. An
accumulation of dust and lint on internal parts of your unit
can cause loss of efficiency
and blower
motor and/or
compressor damage.
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