Advertisement
OPERATING
YOUR UNIT
The operation
ofyour u nit i scontrolled
by
the indoor
temperature
control (thermostat).
You simply adjust the thermostat
and it main-
tains the indoor temperature
at the level you select. Most thermostats
of heating
and cooling
systems
have 3 controls:
a temperature
con-
trol selector,
a FAN control,
and a SYSTEM
or MODE
control.
Re-
fer to your thermostat
owner's
manual
for more information.
To better protect your investment
and to eliminate
unnecessary
ser-
vice calls, familiarize
yourself
with the following
facts:
Cooling
Mode
With the SYSTEM
control set to COOL, your unit will run in cool-
ing 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
"off'
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 "off'
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 deal-
er. You, as the owner, may wish to handle some nfinor 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 ma-
terials, 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] nfininmm clearance).
Also, ensure that the return-air duct connection (s) is physically
sound, is sealed to the furnace casing, and ternfinates outside the
space containing the furnace.
Maintenance
and Care
for the Equipment
Owner
Before perfornfing
equipment
maintenance
yourself,
please care-
fully consider
the following:
FIRE,
EXPLOSION,
ELECTRICAL
SHOCK
AND
CUT HAZARD
Failure to follow this warning could result in personal injury,
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 perform-
ing maintenance.
2. When removing access panels or perfornfing 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 nfininmm, 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 exces-
sive stress on the blower motor and can cause the motor to overheat
and shut down.
This unit nmst have air filters in place before it can be operated.
These filters can be located in one of at least two places. In many ap-
plications, 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 re-
placed.
The other typical application is an accessory filter rack installed in-
side 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
pro-
vided with it for correct
filter sizes and quantities.
Table 1--Indoor
Air Filter
Data
Unit
Size
Filter
Size
PY3G024-030
20x24x1
(508x610x25
mm)
PY3G036
24x30x1
(610x762x25
mm)
PY3G042-
PY3G060
24x36x1
(610x914x25
mm)
Burners
Flue
(}as Valve
llood
A09588
Fig. 3 - Gas Heating/Electric
Cooling Unit 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 ofthe 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 ar-
rows on the filter frame.
If you have difficulty locating your air filter(s) or have questions
concerning proper filter maintenance, contact your dealer for in-
structions. When replacing filters, always use the same size and type
of filter that was supplied originally by the installer.
UNIT
OPERATION
HAZARD
Failure to follow this caution may result in property damage.
Never
operate
your unit without
filters in place. An
accunmlation of dust and lint on internal parts of your unit can
cause loss of efficiency and blower motor and/or compressor
damage.
Advertisement
