York 035-08460-001 User Manual download pdf (Page 3)

035-08460-001 Rev. B (0903)

Unitary Products Group 3

COOLING CYCLE

Switch your thermostat to cool. Select

a comfortable thermostat temperature

setting, typically between 75 and 80°.

Comfort sensations vary with individu-

als. The lower the indoor temperature

desired, the greater will be the number

of hours your unit must operate.

Set your thermostat 2 or 3°F below

normal several hours before entertain-

ing large groups during hot weather.

People give off considerable heat and

moisture.

On an extremely hot day, the indoor

temperature may rise 3 to 6°F above

the thermostat setting. Properly

selected equipment does not have the

capacity to maintain a constant indoor

temperature during the peak load.

Over-sizing your system to handle this

peak load isn't practical because the

oversized system would operate much

less efficiently at all other conditions.

TO MAXIMIZE OPERATING

EFFICIENCY

HEATING CONSERVATION

For the most efficient operation, keep

storm windows and doors closed all

year long. They not only help insulate

against heat and cold, but they also

keep out dirt, pollen and noise.

Closing drapes at night, keeping fire-

place dampers closed when not in use,

and running exhaust fans only when

necessary will help you to retain the air

you have already paid to heat.

Keep lamps, televisions, or other heat

producing sources away from the ther-

mostat. The thermostat will sense this

extra heat and will not be able to main-

tain the inside temperature to the

desired comfort level.

COOLING CONSERVATION

To comfortably cool your home, your

air conditioner must remove both heat

and humidity. Don't turn your system

off even though you will be away all

day. On a hot day, your system may

have to operate between 8 to 12 hours

to reduce the temperature in your

home to a normal comfort level.

Keep windows closed after sundown.

While the outdoor temperature at night

may be lower than indoors, the air is

generally loaded with moisture which is

soaked up by furniture, carpets, and

fabrics. This moisture must be

removed when you restart your sys-

tem.

The hotter the outside temperature, the

greater the load on your system.

Therefore do not be alarmed when

your system continues to run after the

sun has set on a hot day. Heat is

stored in your outside walls during the

day and will continue to flow into your

home for several hours after sunset.

Use your kitchen exhaust fan when

cooking. One surface burner on

"HIGH" requires one ton of cooling.

Turn on your bathroom exhaust fan

while showering to remove humidity.

However, exhaust fans should not be

run excessively. It would decrease effi-

ciency by removing conditioned air.

You can also help your system in the

summer by closing drapes or blinds

and by lowering awnings on windows

that get direct sunlight.

CARE OF SYSTEM

IMPORTANT: The Owner/user

should not attempt to disassemble

the equipment nor perform the

periodic maintenance unless he or

she is experienced and qualified to

A periodic inspection, cleaning, lubrica-

tion and adjustment of your air condi-

tioning system is available from your

dealer. Be sure to ask him about this

service.

For those who prefer to do-it-yourself,

follow the instructions below to care for

your system.

Document and retain in your records,

the following information:

Model Number: __________________

Serial Number: __________________

Date Installed: __________________

Installing Dealer: ________________

_______________________________

This information will be useful if the

unit requires service from a qualified

technician.

COIL CARE

Keep the outdoor unit free of loose

snow, foliage, grass clippings, leaves,

paper, and any other material which

could restrict the proper air flow in and

out of the unit. The coil may be vacu-

umed to remove any debris from

between the fins. However, don't knock

ice off the outdoor unit's coil surface

following an ice or severe snowstorm.

The blows could mash the coil fins

shut (blocking air passage), or break

the refrigerant tubing allowing the

refrigerant to escape.

If the coil becomes excessively dirty,

turn the main disconnect switch to

"OFF" and wash the coil with your gar-

den hose. Avoid getting water into the

fan motor and control box. Flush dirt

from base pan after cleaning the coil.

FIGURE 2:

DISCHARGED

HEATED AIR

OUTDOOR

AIR INTAKE

COOL

SUPPLY AIR

WARM HOUSE AIR

Turn off the electrical power

at the main disconnect for

both the indoor heating unit

and the outdoor unit before

attempting any maintenance

operations.

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York 035-08460-001 User Manual Page 3

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