Sanyo STW-2 User Manual

OWNER’S MANUAL

W

W

PACKAGED TERMINAL AIR CONDITIONER

STW-2 Series

Operating Instructions

Contents

Page

Alert Symbols........................................................... 1

Installation Location ................................................ 2

Electrical Requirements .......................................... 2

Safety Instructions................................................... 2

Names of Parts......................................................... 2

Control Panel and Operation Functions................ 2

Installation Instructions

Front Grille................................................................ 3

Other Features .......................................................... 3

Care and Cleaning.................................................... 4

Tips for Energy Saving............................................ 5

Troubleshooting....................................................... 5

Cool / Heat Model

Contents

Page

IMPORTANT!

Please Read Before Starting................................... 6

1. NAMES OF PARTS............................................. 7

2. WALL CASE AND REAR GRILLE..................... 7

3. INSTALLATION................................................... 7

4. PERMANENT CONNECTION ............................. 8

4-1. For 230/208V Units...................................... 8

4-1-1. Preparation........................................ 8

4-1-2. Installation.......................................... 8

4-2. For 265V Units............................................. 8

4-2-1. Preparation........................................ 8

4-2-2. Installation.......................................... 8

5. AIR LOUVERS.................................................... 9

6. TEMPERATURE LIMITING................................. 9

7. REMOTE CONTROL ........................................ 10

8. FRONT DESK CONTROL ................................ 10

PRODUCT INFORMATION............................... 11

85164119653000 © SANYO 2001 SANYO Electric Co., Ltd.

Power Source:
60 Hz, single-phase, 230/208V & 265V

Alert Symbols

The following symbols used in this manual alert you to potential­ly dangerous conditions to users, service personnel or the appli­ance:

WARNING

CAUTION

Model No.

STW-2 Series

This symbol refers to a hazard or
unsafe practice which can result in
severe personal injury or death.

This symbol refers to a hazard or
unsafe practice which can result in
personal injury or product or prop­erty damage.

Osaka, Japan

Air outlet

Wall case

Cover switch and
control panel

Air intake

Front grille

Rear grille

WARMER

COOLER

r

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n

g

e

I

n

t

e

r

m

e

d

i

a

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e

7

2

°

F

(88°F)

(55°F)

Thermostat

Mode
selector

OPERATING INSTRUCTIONS

Installation Location

• We recommend that this air conditioner be installed

properly by qualified installation technicians in accor­dance with the Installation Instructions provided with
the unit.

• Before installation, check that the voltage of the electric

supply in your home or office is the same as the voltage
shown on the nameplate.

WARNING

• Do not install this air conditioner
where there are fumes or flam­mable gases, or in an extremely
humid space such as a green­house.

• Do not install the air conditioner
where excessively high heat­generating devices are placed.

Electrical Requirements

1. All wiring must conform to the local electrical codes.
Consult your dealer or a qualified electrician for details.

2. Each unit must be properly grounded with a ground (or
earth) wire or through the supply wiring.

3. Wiring must be done by a qualified electrician.

4. Never use an extention cord with this air conditioner.

Names of Parts

Air Intake Air from the room is drawn into this section

and passes through air filters which remove
dust.

Air Outlet Conditioned air is blown out of the air con-

ditioner through the air outlet.

Control Panel and Operation Functions

Safety Instructions

• Read this Instruction Manual carefully before using this
air conditioner. If you still have any difficulties or prob­lems, consult your dealer for help.

• This air conditioner is designed to give you comfort­able room conditions. Use this only for its intended
purpose as described in this Instruction Manual.

• Avoid letting cooled/heated air blow directly on your
body for a long time.

WARNING

CAUTION

• Never use or store gasoline or
other flammable vapor or liquid
near the air conditioner — it is
very dangerous.

• Do not turn the air conditioner
on and off from the power
mains switch. Use the mode
selector switch.

• Do not stick anything into the
air outlet of the unit. This is dan­gerous because the fan is rotat­ing at high speed.

• Do not let children play with the
air conditioner.

• Do not cool or heat the room
too much if babies or invalids
are present.

Thermostat Control

The thermostat knob is used to control the room tempera­ture. The unit automatically cycles on and off to maintain
room temperature. A comfortable temperature will be
maintained in most rooms when the control is set to
about intermediate range.

Mode Selector
HI HEAT provides heating with high fan speed operation.

LOW HEAT provides heating with low fan speed operation.
OFF setting stops heating or cooling operation.
FAN provides fan operation without cooling or heating.
LO COOL provides cooling with low fan speed operation.
HI COOL provides cooling with high fan speed operation.

∗ As long as power is connected to the unit, Freeze

Protection always functions at any position even at OFF
position.

2

Operation:

NOTE

1

2

Front grille

1

2

Front grille

Louver screws

37° OFF VERTICAL 20° OFF VERTICAL

Ventilation control lever

1. Set the mode selector for fan, cooling or heating opera­tion.

2. Set the thermostat to the desired position. (Refer to the
Setting Temperature Guide on page 2.)

The temperatures at the Setting Temperature Guide on
Page 2 are provided for reference only, and may differ
from the actual temperature of the room.

How to stop the air conditioner:

Set the mode selector to OFF position.

How to restart the air conditioner:

Set the mode selector to the desired position.

Front Grille

To remove:

Additional controls are located behind the front grille.
Pull out to release it from the tabs. Then lift up.

The direction of the heated or cooled air may be adjusted
by removing and turning the louvers around.

To reinstall:

Place the tabs over the top rail. Push inward until it snaps
into place.

Air Louvers

To change the louver direction, remove the front grille and
2 louver screws that hold the louvers in place. Turn the
louver section 180° (end for end), replace the screws and
replace the front grille. The textured face of the louver
section must be facing toward the room side.

Other Features

Ventilation Control

The ventilation control lever is located at the upper left
side of the unit, behind the front grille.
This knob is set to CLOSE at the factory. When in this
position, the vent door is closed and only indoor air is cir­culated by the air conditioner. Switching the knob to
OPEN opens the vent door to allow outdoor air to enter
the room. However, leaving the vent door at OPEN
reduces heating or cooling effectiveness and increases
operating costs.

Remote Control

Remote controlling is available with the optional Class 2
Remote Controller and Interface kit. See the Installation
Instructions.

3

Fan Cycle Switch

THERM

O

STAT

WARMER COOLER

SELECTOR

OFF FAN

LOW

LOW

HEAT

COOL

COOL

HEAT

HIGH

HIGH

Pull up

2 air filters

Front

Push
down

NOTE

W

A

R

M

ER

COOLER

CONT

CYCLE

HEAT

HIGH

H

E

A

T

LO

W

OFF

F

A

N

LO

W

C

O

O

L

HIG

H

C

O

O

L

THERMOSTAT

SELECTOR

Knob

Control panel

Fan cycle switch

The Fan Cycle Switch is located under the control panel
behind the front grille. This switch is set to CONT at the
factory to provide continuous fan operation in cool or
heat modes. Leaving the switch at the CONT setting
allows continuous circulation of room air and will keep
the room temperature at stable condition. If you want the
fan to cycle on and off with the compressor or electrical
heater, set the switch to CYCLE.

Care and Cleaning

Turn off the air conditioner before cleaning.

Air Filters

The air filters should be cleaned at least once every two
weeks. Clogged filters reduce cooling, heating and air
flow.

Keeping these filters clean will:

• Decrease cost of operation.

• Save energy.

• Prevent clogged heat exchanger coils.

• Reduce costly compressor problems.

To remove the air filters:

Freeze Protection

Freeze Protection helps prevent plumbing damage due to
sub-freezing temperatures — even if you have turned the
mode selector switch to OFF. The unit automatically turns
on the heater and fan if the room temperature falls to
about 46°F.

You do not have to do anything to activate the Freeze
Protection. It will work as long as power to the unit has
not been interrupted.

To clean the air filters:

• Vacuum off heavy dirt.

• Run water through the filters.

• Dry thoroughly before replacing.

To reinstall the air filters:

Do not operate the air conditioner without the filters in
place. If a filter becomes torn or damaged it should be
replaced immediately. Operating the unit without the fil­ters in place or with damaged filters will allow dirt and
dust to reach the indoor coil and reduce the efficiency of
the unit.

Replacement filters (STK01AF) are available from the deal­er or installer.

Front Grille & Wall Case

Wash the front grille and wall case finish with mild soap
or detergent and lukewarm water.

4