Lennox HS27 User Manual

THERMOSTAT OPERATION -- COMFORT IS AT YOUR FINGERTIPS

ELITE

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Though your thermostat may vary somewhat from
the description below, its operation will be similar.

TEMPERATURE LEVERS

Set the indicator lever or dial to the desired
temperature setpoints for both heating and cooling.

FAN SWITCH

In AUTO or INT mode, the blower operates only
when the thermostat calls for heating or cooling.
This mode is generally preferred when humidity
control is a priority. The ON or CONT mode
provides continuous indoor blower operation,
regardless of whether the compressor or burners are
operating. This mode is required when constant air
circulation or filtering is desired.

SYSTEM SWITCH

Set the system switch for heating, cooling or auto
operation. The auto mode allows the system to
automatically switch from heating mode to
cooling mode to maintain predetermined comfort
settings.

TEMPERATURE INDICATOR

The temperature indicator displays the actual
room temperature.

PROGRAMMABLE THERMOSTATS

Your Lennox system may be controlled by a
programmable thermostat. These thermostats
provide the added feature of programmable
setpoints for both heating and cooling. Refer to
the user's information manual provided with
your particular thermostat for operation details.

E L I T E ® SERIES

A I R C O N D I T I O N E R

B E F O R E Y O U C A L L

If your system fails to
operate, check the following
before calling for service:

D Check to see that all

electrical disconnect
switches are ON.

D Make sure the room

thermostat temperature
selector is properly set.

D Make sure the room

thermostat system switch is
properly set.

D Replace any blown fuses, or

reset circuit breakers.

D Make sure unit access

panels are in place.

D Make sure air filter is

clean.

Dealer Name:
Address:

Phone Number:

Unit Model Number: HS27 ­Installation Date:

D Locate unit model number

and have it handy before
calling.

1996 Lennox Industries Inc.

Dallas, Texas

503,511M

8/96

O W N E R ' S M A N U A L

Litho U.S.A.

E L I T E ® SERIES

asting

L

value. That's
why you
purchased an
Elite

® Series

air conditioner
from Lennox.
The quiet,
efficient,
reliable
comfort
you've come
to depend
on from the
company you
trust.

rotect Your Investment

P

Proper Maintenance

is Your Responsibility

E

L I T E ® S E R I E S

Congratulations,
you have made a
wise choice with the
purchase of your

Lennox air condiĆ
tioner. For over 100 years,
people have trusted Lennox to
make their lives more comfortĆ
able. Lennox prides itself in
manufacturing high quality
products that keep you
comfortable and keep your
monthly energy bills low, year
after year.

W

A R R A N T I E S

Your unit is covered by one of the

COMPRESSOR

10-YEAR

LIMITED

WARRANTY

in your new Lennox

PARTS

5-YEAR

LIMITED

WARRANTY

warranty. All remaining
components are covered by a
5Ćyear limited parts warranty.
That's one more reason to trust
Lennox.

best warranĆ
ties in the
industry.
The
compressor

air condiĆ
tioner is
backed by a
10Ćyear
limited

Your EliteR Series air
conditioner includes a sheet
which outlines the warranty and
its conditions. Keep your
warranty along with other
important records concerning the
purchase and maintenance of
your heating and cooling
equipment.

You should be aware that failure
to maintain your system as outĆ
lined in this manual will void
your equipment warranty.

M

A I N T E N A N C E

In order to ensure peak perforĆ
mance, your system must be
properly maintained. A little efĆ
fort on your part will keep your
system in top form year after
year. Clogged filters and blocked
airflow prevent your unit from
operating at its most efficient
level.

Ask your Lennox dealer to show
you where your indoor unit's
filter is located. It will be either
at the indoor unit (installed
internal or external to the
cabinet) or behind a return air
grille in the wall or ceiling.
Check the filter monthly and
clean or replace it as needed.

Disposable filters should be
replaced with a filter of the same
type and size. If you are unsure
about the filter you need for
your system, call your Lennox
dealer for assistance.

Important!

Turn off electrical power to the
unit at the disconnect switch
before performing any
maintenance. The unit may have
multiple power supplies.

Many indoor units are equipped
with reĆusable foam filters.
These filters can be cleaned with
a mild soap and water solution.
Rinse the filter thoroughly and
let it dry completely before reĆ
turning it to the unit or grille.

The filter and all access panels
must be in place any time the
unit is in operation.

Your system may be equipped
with an electronic air cleaner
which will provide respiratory
relief by removing up to 90 perĆ
cent of all airborne particles
which pass through it. If it is,
ask your dealer to instruct you
on its maintenance.

Your indoor evaporator coil is
equipped with a drain pan to
collect condensate formed as
your system removes humidity
from the inside air. Have your
dealer show you where the main
condensate drain (and auxiliary
drain, if applicable) runs and
how to check the drain for any
obstruction.

It is also very important to
provide unrestricted airflow to
the outdoor unit. Leaves, trash
or shrubs crowding the unit
cause the outdoor unit to work
harder and use more energy.
Keep shrubbery trimmed away
from the unit and periodically
check for debris which may have
collected around the unit.

L E N N O X D E A L E R S

Nobody knows more about the
care and operation of your new
Lennox equipment than your
Lennox dealer. This means that
your Lennox dealer is your best
choice for routine maintenance
or service. Lennox' Quality
Dealer Standards program
ensures that when you call your
Lennox dealer, you can count on
prompt, courteous and profesĆ
sional service.

Before the start of each cooling
season, the following air
conditioning service checks
should be performed by a
qualified service technician. As

always, electrical power to the
unit must be turned off prior to
any unit maintenance.

D The outdoor condenser coil

and indoor evaporator coil
should be inspected and
cleaned. The outdoor condensĆ
er coil may be flushed with a
water hose.

D The refrigerant lines should be

visually inspected and the coils
should be checked for leaks.

D Wiring should be checked for

loose connections.

D Voltage must be checked at the

indoor and outdoor units
(units operating).

D The ampĆdraw at the

condenser fan motor and
indoor blower motor should be
checked. Values should be
compared with those given on
the unit nameplate.

D Indoor unit filters should be

cleaned or replaced.

D The refrigerant charge should

be checked and system
pressures should be gauged.

D The condensate drain line

should be checked for free and
unobstructed flow and it
should be cleaned, if necessary.

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