User Information Manual

704B

SINGLE-PACKAGED ELECTRIC COOLING UNIT WITH PURON® (R-410A) REFRIGERANT

NOTE: Read the entire instruction manual before starting the installation.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions of cleaning coils and filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags, and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguisher available for all brazing operations.

Recognize safety information. This is the safety-alert symbol . When you see this symbol on the product or in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words — DANGER, WARNING, CAU- TION, and NOTE. Danger identifies the most serious hazards, which will result in severe personal injury or death. Warning indicates a condition that could cause serious personal injury or death. Caution is used to identify unsafe practices, which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

Note to Installer: This manual should be left with the equipment user.

WARNING: Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Failure to follow this warning could result in fire, serious injury, or death.

WARNING: Do not use this unit if any part has been under water. Immediately call a qualified service techni- cian to inspect the unit and to replace any part of the control system which has been under water. Failure to follow this warning could result in electrical shock, fire, serious injury, or death.

WARNING: Before performing recommended mainte- nance, be sure the main power switch to unit is turned off. Electric shock could cause serious injury or death.

STARTING OR SHUTTING UNIT OFF

1.To start the unit:

a. Turn on the electrical power supply to unit.

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Cancels: New	OM01–61
	6–03

C99064

Fig. 1—Unit 704B

b.Select temperature and set SYSTEM switch or MODE control to desired mode.

2.To shut unit off:

NOTE: If the unit is being shut down because of a malfunction, call your dealer as soon as possible.

a.Set system SWITCH or MODE control to OFF.

b.Turn off the electrical power supply to unit.

OPERATING YOUR PACKAGED COOLING UNIT

The operation of your packaged cooling system is controlled by the indoor thermostat. You simply adjust the thermostat and it maintains the indoor temperature at the level you select. Most thermostats of cooling systems have 3 controls: a temperature control selector, a FAN control, and a SYSTEM or MODE control. Refer to your thermostat owner’s manual for more information.

To better protect your investment and to eliminate unnecessary service calls, familiarize yourself with the following facts:

I. COOLING MODE

With the SYSTEM or MODE control set to COOL, your unit will run in cooling mode until the indoor temperature is lowered to the level you have selected. On extremely hot days, your system will run for longer periods at a time and have shorter “off” periods than on moderate days.

II.HEATING MODE (IF INSTALLED WITH OPTIONAL ELECTRIC HEAT)

Your system may also be equipped with an electric heating source. On cold days and nights, place your MODE control to HEAT and your system will automatically turn on the supplemental heat in order to maintain the level of comfort you have selected.