Mitsubishi PAC-SC36NA-E Installation Manual

WT04936X01

Air-Conditioners For Building Application

Remote ON/OFF <input> signal adapter PAC-SC36NA-E

Installation Manual

This installation manual describes only the connection of the Remote ON/OFF <output> signal adapter to the outdoor unit of CITY MULTI air conditioner series. This part is a wiring member to connect the external circuit (locally procured) to the board on the outdoor unit. Depending on the connection, Demand, Night mode, Snow sensor etc. can be controlled. For details of compatible models, connection method and setting method, refer to the CITY MULTI DATA BOOK, Electrical Wiring Diagram etc. For your safety, be sure to read firstly “ 1 Safety Precaution ” described below thoroughly and then install the PAC-SC36NA-E.

1 Safety Precaution

● The following two symbols are used to denote dangers that may be caused by incorrect use.

WARNING CAUTION

● After reading this instruction manual, keep it in a place where the end user can find it anytime he or she wants to it. When someone moves, repairs or uses the PAC-SC36NA-E, make sure that this manual is forwarded to the final user.

■ Ask your dealer or technical representative to install the unit.

Any deficiency caused by your own installation may result in an electric shock or fire.

■ Ensure that installation work is done correctly following this

instruction manual.

Any deficiency caused by installation may result in an electric shock or fire.

■ Firmly connect the wiring using the specified cables.

Carefully check that the cables do not exert any forces on the terminals.

Improper wiring connections may produce heat and possibly a fire.

■ Never modify or repair the PAC-SC36NA-E.

Any deficiency caused by your modification or repair may result in an electric shock or fire. Consult with your dealer about repair.

■ Do not install in any place exposed to flammable gas leakage.

Flammable gases accumulated around the body of PAC-SC36NA-E may cause an explosion.

■ Do not use in any special environment.

Using in any place exposed to oil (including machine oil), steam and sulfuric gas may deteriorate the performance significantly or give damage to the component parts.

■ Wire so that it does not receive any tension.

Tension may cause wire breakage, heating or fire.

■ Do not install in any place at a temperature of more than 40

°F) or less than 0 °C (32 °F) or exposed to direct sunlight.

(104

2 Parts list

Make sure that the following items are included in the package.

• Remote ON/OFF <input> signal adapter 3 m (9-3/4 ft) ...........1 pcs.

This symbol denotes what could lead to serious injury or death if your misuse the PAC-SC36NA-E.

This symbol denotes what could lead to a personal injury or property damage if you misuse the PAC-SC36NA-E.

WARNING

■ All electrical work must be performed by a licensed technician, according to local regulations and the instructions given in this manual.

Any lack of electric circuit or any deficiency caused by installation may result in an electric shock or fire.

■ Do not move and re-install the PAC-SC36NA-E yourself.

Any deficiency caused by installation may result in an electric shock or fire. Ask your distributor or special vendor for moving and installation.

■ Stop the operation if any malfunction occurs.

If malfunction occurs (burning smell, etc.) stop the operation and turn off the power supply. Contact your dealer or technical representative. If the controller continues to operate after a malfunction occurs, this may cause damage, electric shock or fire.

■ Do not turn on the main power until installation has been completed.

Doing so may result in electric shock or fire.

CAUTION

■ Do not install in any place where acidic or alkaline solution or special spray are often used.

Doing so may cause an electric shock or malfunction.

■ Do not install in any steamy place such a bathroom or kitchen.

Avoid any place where moisture is condensed into dew. Doing so may cause an electric shock or malfunction.

■ Use standard wires in compliance with the current capacity.

A failure to this may result in an electric leakage, heating or fire.

■ Do not wash with water.

Doing so may cause an electric shock or malfunction.

°C

3 Connection to the Outdoor Unit

Connect the connector side of the Remote ON/OFF <input> signal adapter to the connector CN3D, CN3N and CN3S of the outdoor unit control board as necessary. The connector can only be connected in one direction only. Do not force the connection.

4 Locally Procured Parts

All parts other than the Remote ON/OFF <input> signal adapter (PAC-SC36NA-E) are procured locally. The items required will depend on the connection method. Refer to the example of use shown below. (Example)

1 External timer ....... No voltage contact out put timer (with separate circuits for power supply and switch).

2 Switch ................... Single pole, single action swich.

CAUTION: Choose the parts for the contact for minute electric current.

The timer and the contact of the switch will require degrees of 5 VDC, 12 V or 1 mA load. Choosing the wrong parts may cause stoppage of the adapter.

3 Transit relay .......... When the wiring work as described in

4 Control cable ........ The length of the electrical wiring for the PAC-SC37SA is 3 meters (9-3/4 ft).

CAUTION:

1. Wiring should be covered by insulation tube with supplementary insulation.

2. Use relays or switches with IEC or equivalent standard.

3. The electric strength between accessible parts and control circuit should have 2750 V or more.

To extend this length, use sheathed 2-core cable

Control cable type: CVV, CVS, CPEV or equivalent Cable size: 0.5 mm Don’t extend the cable more than 10 meters (32 ft).

~ 1.25 mm2 (16 to 22 AWG)

6. Wiring Restrictions

is required, this relay is used.

5 Locally Procured Wiring

Basic connection methods for following models are shown below as examples. For details and the connection method with another models, refer to the CITY MULTI DATA BOOK, Electrical Wiring Diagram etc.

(1) PUHY, PUY, PURY-P200, 250, 300, 350YGM

PUHY, PURY-P400, 450, 500, 550, 600, 650YGM PUHY-P700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250YSGM

1 Step demand (CN3D + DipSW4-7 ON)

Power supply of relay

X Y

SW2

SW1

Preparations in the field

2 Night mode (CN3D + DipSW4-7 OFF)

Insulate this point securely as this is not used.

Power supply of relay

Preparations in the field

SW1

Orange

XYBrown

Red

Adapter

Orange

Brown

Red

Maximum cable length is 10 m

Adapter

Maximum cable length is 10 m

Outdoor unit control board

CN3D

Outdoor unit control board

X, Y: Relay (Point of contact rating: DC1 mA)

CN3D

Y (SW2)

OPEN

SHORT

X (SW1) OPEN 100 %

0 % (Stop)

SHORT

* They are rough values.

X: Relay (Point of contact rating: DC1 mA)

X (SW1)

SHORT

Night mode: The noise level is reduced by limiting the

Night mode

OPEN

OFF

maximum fan frequency under the following condition. Cooling mode: outdoor temp. (TH6) < 30 °C Heating mode: outdoor temp. (TH6) > 3 °C

75 % 50 %

Preparations in the field

Adapter

CN3D

XYBrown

Red

X Y

SW1

SW2

Outdoor unit control board

Maximum cable length is 10 m

Orange

Power supply of relay

Preparations in the field

Adapter

CN3N

XYBrown

Red

X Y

SW1

SW2

Outdoor unit control board

Maximum cable length is 10 m

Orange

Power supply of relay

3 Demand and Night mode (CN3D + DipSW4-7 OFF)

Power supply of relay

X Y

SW2

SW1

Preparations in the field

XYBrown

4 Snow sensor (CN3S)

Insulate this point securely as

Power supply of relay

this is not used.

SW1

Preparations in the field

Adapter

Orange

Brown

Red

Maximum cable length is 10 m

5 Auto change over (CN3N) (PUHY, PUY only)

Power supply of relay

X Y

SW2

SW1

Preparations in the field

XYBrown

Adapter

Orange

Red

Maximum cable length is 10 m

Adapter

Orange

Red

Maximum cable length is 10 m

Outdoor unit control board

CN3S

Outdoor unit control board

X, Y: Relay (Point of contact rating: DC1 mA)

CN3D

X: Relay (Point of contact rating: DC1 mA) Snow sensor: The outdoor fun runs when X is closed

CN3N

Night mode

X (SW1)

SHORT

OPEN

ON/OFF

OFF

in stop mode or thermostat mode.

SW1: Cool/Heat SW2: Validity/Invalidity of SW1 X, Y: Relay (Point of contact rating: DC1 mA)

OPEN (Auto change over: OFF)

Y (SW2)

SHORT (Auto change over: ON)

Y (SW2)

OPEN

SHORT

Compressor

ON/OFF

OFF

X (SW1)

OPEN

SHORT

NORMAL

COOL HEAT

(3) PUMY-P100, 125, 140YHM

1 Step demand (CN3D + DipSW8-1 ON)

2 Night mode (CN3D + DipSW8-1 OFF)

Insulate this point securely as this is not used.

Power supply of relay

Preparations in the field

5 Auto change over (CN3N)

SW1

X, Y: Relay (Point of contact rating: DC1 mA)

X (SW1) OPEN

SHORT

Y (SW2)

OPEN

SHORT

100 %

0 % (Stop)

75 % 50 %

* They are rough values.

Adapter

Orange

Brown

Red

Maximum cable length is 10 m

Outdoor unit control board

X: Relay (Point of contact rating: DC1 mA)

X (SW1)

CN3D

SHORT

Night mode: The noise level is reduced by limiting the

Night mode

OPEN

OFF

maximum fan frequency under the following condition. Cooling mode: outdoor temp. (TH6) < 30 °C Heating mode: outdoor temp. (TH6) > 3 °C

SW1: Cool/Heat SW2: Validity/Invalidity of SW1 X, Y: Relay (Point of contact rating: DC1 mA)

X (SW1)

OPEN OPEN (Auto change over: OFF)

Y (SW2)

SHORT (Auto change over: ON)

SHORT

NORMAL

COOL HEAT

(2) PQHY, PQRY-P200, 250YGM-A

PQHY, PQRY-P400, 500YSGM-A

1 Demand (CN3D)

Power supply of relay

Preparations in the field

Insulate this point securely as this is not used.

SW1

Orange

Brown

Red

Maximum cable length is 10 m

Adapter

Outdoor unit control board

X: Relay (Point of contact rating: DC1 mA)

CN3D

OPEN

SHORT

ON/OFF

OFF

Compressor

X (SW1)

Demand: The compressor is stopped when X is closed.

6 Wiring Restrictions

Keep the length of the cable connecting to the circuit board of the indoor unit shorter than 10 meters (32 ft). Longer than 10 meters (32 ft) could cause improper operation. Use a transit relay when extending wiring such as remote wiring.