York YD Millennium, YC-YD, PC-PD User Manual

CONTENTS

HOW YOUR SYSTEM WORKS . . . . . . . . . 2

COOLING CYCLE. . . . . . . . . . . . . . . . . . . . . . . 2

HEATING CYCLE (HEAT PUMPS) . . . . . . . . . . 2

SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . 2

SETTING THE THERMOSTATS . . . . . . . . . . . . 2

USER’S INFORMATION

MANUAL

OUTDOOR SPLIT-SYSTEM

THERMOSTATS . . . . . . . . . . . . . . . . . . . . . 2

YOUR KEY TO COMFORT . . . . . . . . . . . . . . . . 2

COOLING ONLY . . . . . . . . . . . . . . . . . . . . . . . . 2

COOLING AND HEATING (HEAT PUMP) . . . . . 2

MANUAL CHANGE-OVER . . . . . . . . . . . . . . . . 2

PROGRAMMABLE ELECTRONIC THERMO-

STATS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

FAN OPERATION SELECTION . . . . . . . . . . . . 3

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

POWER FAILURE . . . . . . . . . . . . . . . . . . . . . . . 3

SYSTEM OPERATION . . . . . . . . . . . . . . . . 3

MANUAL CHANGE-OVER THERMOSTAT . . . . 3

ELECTRONIC THERMOSTAT . . . . . . . . . . . . . 3

TO MAXIMIZE OPERATING EFFICIENCY . 4

HEATING CONSERVATION . . . . . . . . . . . . . . . 4

COOLING CONSERVATION . . . . . . . . . . . . . . . 4

CARE OF SYSTEM . . . . . . . . . . . . . . . . . . . . . . 4

COIL CARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SERVICE CALLS . . . . . . . . . . . . . . . . . . . . . . . . 4

FILTER CARE . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . 4

PARTS INFORMATION . . . . . . . . . . . . . . . . . . . 4

EXTENDED WARRANTY . . . . . . . . . . . . . . . . . 5

SOME EFFICIENCY DO’S & DON’TS . . . . . . . . 5

CONTACT INFORMATION . . . . . . . . . . . . . . . . 5

AIR CONDITIONING OR HEAT PUMP

MODELS: THREE PHASE

The manufacturer recommends that the “User” read all sections of this manual and keep the manual for future reference.

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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.

819448-UUM-A-1011

HOW YOUR SYSTEM WORKS

COOLING CYCLE

If your hand is wet and you blow on it, it feels cool because some of the moisture is evaporating and becoming a vapor. This process requires heat. The heat is being taken from your hand, so your hand feels cool. That’s what happens with an air conditioner. During the cooling cycle, your system will remove heat and humidity from the space and will transfer this heat to the outdoor air.

HEATING CYCLE (HEAT PUMPS)

During the heating cycle, your system will remove heat and humidity from the outdoor air and will transfer this heat to the space. This is possible because even 0°F outdoor air contains a great deal of heat. Remember that your heat pump doesn’t generate much heat, it merely transfers it from one place to another.

SYSTEM OPERATION

Your thermostat puts full control of the comfort level in your space at your fingertips. DO NOT switch your thermostat rapidly ON and OFF or between HEAT to COOL. This could damage your equipment. Always allow at least 5 minutes between changes.

SETTING THE THERMOSTATS

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 thermostats can not be supported as trouble free when used with this product.

If your system has been designed to allow both cooling and heating operation, you may have either a manual changeover type, or a programmable electronic type thermostat.

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.

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.

The computerized electronic thermostat is actually a sophisticated electronic 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.

COOLING ONLY

If your air conditioning system is designed to provide cooling only (AC), with no capability for heating operation (heat pump), a multiple-stage cooling only thermostat, with a manual, one-position “Cool” and “Off” comfort switch is all that is required for system operation.

The main power to the system must be kept ON at all times to prevent damage to the outdoor unit compressor. If necessary, the thermostat control switch should be used to turn the system OFF. Should the main power be disconnected or interrupted for 8 hours or longer, DO NOT attempt to start the system for 8 hours after the power has been restored to the outdoor unit. If heat is needed during this 8 hour period, use emergency heat.

THERMOSTATS

YOUR KEY TO COMFORT

Although 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 changeover type, or a programmable electronic type thermostat with multiple stages of cooling and 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

2 Johnson Controls Unitary Products

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