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161038-YUM-A-1205
USER’S INFORMATION
MANUAL
SINGLE PACKAGE HEAT PUMP UNITS
ISO 9001
Certified Quality
Management System
Congratulations . . .
On your purchase of one of the most versatile comfort conditioning
systems available in the industry today. This high efficiency system
has been precision designed, manufactured of high quality materials
and has passed many vigorous inspections and tests to ensure years of
satisfactory service.
This booklet is meant to increase your understanding of your system,
tell you how to operate it efficiently and how to obtain the greatest
measure of comfort at the lowest operating expense. Please read this
booklet thoroughly.
We appreciate your interest in our product and your decision to pur-
chase our system. Enjoy your comfort.
The manufacturer recommends that the user read all sec-
tions of this manual and keep the manual for future refer-
ence.
SECTION I: SAFETY
SECTION II: THERMOSTATS
YOUR KEY TO COMFORT
Though thermostats may vary widely in appearance they are all
designed to perform the same basic function, to control the operation of
your air conditioning or heat pump system. Regardless of size or shape,
each thermostat will feature a temperature indicator; a dial, arm, or
push button for selection of the desired temperature; a fan switch to
choose the indoor fan operation; and a comfort switch for you to select
the system mode of operation.
COOLING AND HEATING (HEAT PUMP)
If your system has been designed to allow both cooling and heating
operation, you may have either a manual change-over type, or a pro-
grammable electronic type thermostat with single stage of cooling and
single stage of heat.
MANUAL CHANGE-OVER
Manual change-over simply means that the comfort switch must be
manually positioned every time you wish to switch from the cooling to
heating or heating to cooling modes of operation.
SECTION III: PROGRAMMABLE
ELECTRONIC THERMOSTATS
The computerized electronic thermostat is actually a sophisticated elec-
tronic version of a manual change-over type. This thermostat includes
features which allow “set-back” temperature variations for periods of
sleep, or while you are away during the day, and means energy savings
for you. The thermostat also features a digital clock.
This product must be installed and serviced by a qualified
installer or service agency. Improper installation, adjustment,
alteration, service or maintenance can cause injury or property
damage.
TABLE OF CONTENTS
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
THERMOSTATS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
YOUR KEY TO COMFORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
COOLING AND HEATING (HEAT PUMP) . . . . . . . . . . . . . . . . . . . .1
MANUAL CHANGE-OVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
PROGRAMMABLE ELECTRONIC THERMOSTATS . . . . . . . . . . . . .1
FAN OPERATION SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
POWER FAILURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
MANUAL CHANGE-OVER THERMOSTAT . . . . . . . . . . . . . . . . . . .2
ELECTRONIC THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
CARE OF SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
COIL CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
SERVICE CALLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
FILTER CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
PARTS INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SOME EFFICIENCY DO’S & DON’TS . . . . . . . . . . . . . . . . . . . . . . . . .3
REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3