343787-UUM-B-0409
USER’S INFORMATION MANUAL
R-410A
OUTDOOR SPLIT-SYSTEM
AIR CONDITIONING OR HEAT PUMP
MODELS: 18 SEER CZH, AC8B, AL8B SERIES
2 TO 5 TONS
MODELS: 18 SEER YZH, HC8B, HL8B SERIES
2 TO 5 TONS
ISO 9001
Certified Quality
Management System
LISTED
The manufacturer recommends that the user read all sec-
tions of this manual and keep the manual for future refer-
ence.
SAFETY
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.
Only approved thermostats have been tested and are fully compatible
with this equipment.
Please be aware that many different thermostats
operate on batteries or “power stealing” principals. These types of ther-
mostats can not be supported as trouble free when used with this product.
The following illustrations and discussion will help you determine which
type of thermostat you have for your system.
A complete operating instruction is provided by the manufacturer for
each thermostat. Familiarize yourself with its proper operation to obtain
the maximum comfort with minimum energy consumption.
COOLING ONLY
If your air conditioning system is designed to provide cooling only (AC),
with no capability for heating operation (heat pump), a two-stage cool-
ing only thermostat, with a manual, one-position “Cool” and “Off” com-
fort switch is all that is required for system operation.
NOTE:
If you have an independent heating system (with a separate
thermostat), always be sure the heating control is turned “Off” before
turning on the cooling system.
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 2-stages of cooling and 2-
stages 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.
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.
CONTACT INFORMATION
•
Go to website at www.york.com click on “about us”, then click on “contact us” and follow the instructions.
•
Contact us by mail:
Johnson Controls Unitary Products
Consumer Relations
5005 York Drive
Norman, OK 73069
TABLE OF CONTENTS
CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
THERMOSTATS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
YOUR KEY TO COMFORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
COOLING ONLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SERVICE CALLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
FILTER CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
PARTS INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
EXTENDED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SOME EFFICIENCY DO’S & DON’TS . . . . . . . . . . . . . . . . . . . . . . .3
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
