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COMMERCIAL. UNITARY SYSTEMS
50ZP Packaged Air Conditioner
A Guide to Operating and Maintaining Your Cooling Unit
NOTE TO INSTALLER:
This manual should be left with the equipment owner.
A WARNING
Before performing recommended maintenance, be sure main power switch to unit is turned off. Electrical shock could cause personal injury
50ZP Packaged Air Conditioner
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
Book|1 |4 |
PC 111 |
Catalog No 535-046 |
Printed in U S A |
Form 50ZP-1SO |
Pg 1 |
12-95 |
Replaces: New |
Tab 1b 6b |
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WELCOME TO EFFICIENT COOLING
COMFORT
Congratulations on your excellent choice and sound in vestment in home cooling comfort!
Your new air conditioner represents both the latest in en gineering development and the culmination of many years of experience from one of the most reputable manufacturers of comfort systems.
Your new unit is among the most energy-efficient and re liable air conditioning products available today. To assure its dependability, spend just a few minutes with this booklet now. Learn about the operation of your air conditioner and the small amount of maintenance it takes to keep it operating at its peak efficiency.
With minimal care, your air conditioner will provide you and your family with satisfying home comfort — both now and for years to come.
IMPORTANT FACTS
To better protect your investment and to eliminate unnec essary service calls, familiarize yourself with the following facts.
A WARNING
Improper installation, adjustment, alteration, service, main tenance or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency, distributor, or branch. The qualified in staller or agency must use only factory authorized kits or accessories when modifying this product.
Your air conditioning system should never be operated with out a clean air filter properly installed. Plan to inspect the filter periodically. A clogged air filter will increase oper ating costs and shorten the life of the unit.
Supply-air and return-air registers should not be blocked. Drapes, furniture, and toys are some of the items com monly found obstructing grilles. Restricted airflow less ens the unit’s efficiency and life span.
Outdoor units must have unrestricted airflow. Do not cover the unit, lean anything against it, or stand upon it. Do not allow grass clippings, leaves, or other debris to accu mulate around or on top of the unit Maintain a 12-in. mini mum clearance between the outdoor unit and tall grass, vines, shrubs, et cetera.
Your multipurpose indoor thermostat is the control center for your air conditioning system. You should familiarize yourself with its proper operation. Attempting to control the system by other means — for instance, switching the electrical supply power ON and OFF — may cause dam age to the unit.
Thermostat “jiggling” causes rapid-cycling, which is po tentially damaging to the compressor. Do not move the temperature selector on the thermostat for any reason for at least 5 minutes after the compressor has shut oif.
You may find that you can maintain greater personal com fort by running the fan continuously. “Air pockets” can form due to the structure of the building, placement of reg isters, et cetera. These air pockets may be too cool or warm for your liking. Continuous fan operation minimizes any temperature differences. Also, systems equipped with elec tronic air cleaners and/or humidifiers offer the added ben efits of having the air continuously cleaned year-round, and humidified during the winter season.
Your air conditioner will remove humidity from your home during the cooling season. After a few minutes of opera tion, you should be able to see water trickle from the condensate drain of the cooling coil. Check this occasion ally to be sure the drain system is not clogged. Of course, don’t expect to see much drainage if you live in a very dry environment.
OPERATING YOUR AIR CONDITIONER
The operation of your air conditioning system is con trolled by the indoor thermostat. You simply adjust the ther mostat and it maintains the indoor temperature at the level you select. Most thermostats for air conditioning systems have three controls. These are the temperature control selector, FAN switch, and SYSTEM switch.
The temperature control selector is a dial or lever that al lows you to establish the degree of temperature that you wish to maintain for your personal comfort. Some thermostats pos sess two temperature control selectors: one for setting the temperature desired during the cooling cycle, and one to set the heating operation temperature (if the accessory electric heater is used). Typical settings are 78 degrees Fahrenheit for cooling and 68 degrees for heating.
The FAN switch offers two options for controlling the blower: AUTO and ON. When set to AUTO, the blower will run during the time the air conditioner is operating. When the FAN switch is set at the ON position, the blower will tun continuously.
Typically, the SYSTEM switch on your thermostat offers the following selections: COOL, OFF, and HEAT. Your ther mostat may also have a fourth selection, AUTO. The air con ditioner will not operate when the SYSTEM switch is set at the OFF position. With the SYSTEM switch set at COOL, the cooling section of your comfort system will operate when the indoor temperature rises above the level that you wish to maintain With the SYSTEM switch set at the HEAT posi tion, the accessory electric heater will operate automatically whenever the indoor temperature falls below the level that you have selected.
The AUTO selection found on some thermostats provides for automatic changeover between cooling and heating cycles. With the SYSTEM switch set in the AUTO position, the cool ing mode is activated when the indoor temperature rises above the thermostat cooling temperature setting, or the heating mode will be activated when the indoor temperature drops below the thermostat setting for the heating cycle.
Cooling Cycle — When operating in the cooling cycle, your air conditioner will run until the indoor temperature is lowered to the level you have selected. On extremely hot days, your air conditioner will run for longer periods at a time and have shorter “off” periods than on moderate days.
The following are typical conditions that add extra heat and/or humidity to your home. Your air conditioner will work longer to keep your home comfortable under these conditions:
•Entrance doors are frequently opened and closed
•Laundry appliances are being operated
•A shower is running
•More than the usual number of people are present in the home
•More than the normal number of electric lights are in use
•Drapes are open on the sunny side of the home
H-R
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