Installation Manual

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INSTALLATION MANUAL

AIR CONDITIONER

OPTIONAL PARTS

External input and output PCB

For authorized service personnel only.

• Hand this manual to the customer to keep for future use,

such as for relocating or repairing the product.

1. SAFETY PRECAUTIONS

WARNING

Indicates a potentially or imminently

hazardous situation which, if not avoided,

could result in death or serious injury.

For the air conditioner to operate satisfactorily, install as

outlined in this installation manual.

Installation work must be performed in accordance with

national wiring standards by authorized personnel only.

Before installation, be sure that all sources of power have

been shut off. There is a danger of electric shock.

Never touch electrical components immediately after the

power supply has been turned off. Electrical shock may

occur. After turning off the power, always wait 5 minutes or

more before touching electrical components.

For installation purposes, be sure to use the parts supplied

by the manufacturer or other prescribed parts. The use of

non-prescribed parts can cause serious accidents such as

the unit falling, water leakage, electric shock, or ﬁ re

Discharge static electricity before the installation.

For the PCB and locally purchased parts, apply voltage

indicated on speciﬁ cations of parts. Application of

unspeciﬁ ed voltage may result in failure or malfunction of

air conditioner.

CAUTION

Indicates a potentially hazardous

situation that may result in minor or

moderate injury or damage to property.

Do not pull on the connectors with too much force.

2. ABOUT THE UNIT

2.1. General

• This PCB is an adapter connecting indoor unit control

PC board and local wiring for various controls (Remote

operations, Operation status display, Error status display),

Fan (fresh air) control or External heater control.

2.2. Parts and accessories

• The following installation parts are supplied.

Use them as required.

Name and shape Q’ty Description

Installation manual

This manual

External connection PCB

For various

external input/

output connections

Spacer

For attaching the

PCB

Spacer

For attaching the

PCB

Wire with connector

For connecting the

PCB

EMI core

For mounting on

wire

* Use of this item depends on the product. Please refer to the

installation manual of the indoor unit.

PART No. 9380828112

9380828112_IM.indd 19380828112_IM.indd 1 21/4/2017 PM 1:15:2021/4/2017 PM 1:15:20

Summary of content (4 pages)

PAGE 1
AIR CONDITIONER OPTIONAL PARTS External input and output PCB PART No. 9380828112 INSTALLATION MANUAL For authorized service personnel only. • Hand this manual to the customer to keep for future use, such as for relocating or repairing the product. 1. SAFETY PRECAUTIONS WARNING Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury. For the air conditioner to operate satisfactorily, install as outlined in this installation manual.
PAGE 2
■ Input signal type 3. INSTALLATION PROCEDURES The input signal type can be selected. Signal type (edge or pulse) can be switched by the DIP switch 2 (SW2) on the External input and output PCB. 3.1. Connecting the PCB Description of External input/output PCB When SW2 is on the “Edge” side. To indoor unit PCB Connector wire Edge When SW2 is on the “Pulse” side. Rotary switch The width of pulse must be longer than 200 msec. SW2 Pulse SW1 Fig. External input and output PCB 4.2.
PAGE 3
• Apply voltage In case of external power supply, set the slide switch of SW1 to “VOL” side. PCB 1 1 Input 1 1 - Input 2 Power supply + 2 2 4.3. External output • A twisted pair cable (22AWG) should be used. • Permissible voltage and current: DC 5 V to 30 V / 3 A, AC 30 V to 250 V / 3 A • For details, refer to the following chart “Combination of external input and output”. C (Example) PCB Connected unit *1: The switches can be used on the following condition: DC 12 V to 24 V, 1 mA to 15 mA.
PAGE 4
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