Mitsubishi Electronics CN24RELAY-KIT-CM3 Installation Manual

External Heater Adapter

CN24RELAY-KIT-CM3

Installation Manual

This manual describes installation of the External Heater Adapter that connects to CITY MULTI air conditioner R410A series indoor units.

product has special wiring to drive an electric heater with the air conditioner. Please refer to the technical manual for details. For your

safety, be sure to read the “ ” described below thoroughly before installing the CN24RELAY-KIT-CM3.

1 Safety Precaution

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

WARNING This symbol denotes what could lead to serious injury or death if your misuse the CN24RELAY-KIT-CM3. CAUTION This symbol denotes what could lead to a personal injury or property damage if CN24RELAY-KIT-CM3 is misused.

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 CN24RELAY-KIT-CM3 , make sure that this manual is forwarded to the final user.

CAUTION

WARNING

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 CN24RELAY-KIT-CM3.

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

All electrical work must be performed by a licenced 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 CN24RELAY-KIT-CM3 yourself.

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

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.

Do not wash with water.

Doing so may cause an electric shock or malfunction.

Do not install in any place at a temperature of more than 40˚C (104˚F) or less than 0˚C (32˚F) or exposed to direct sunlight.

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

Flammable gases accumulated around the CN24RELAY-KIT-CM3 may cause an explosion.

Do not use in any special environment.

Using in any place exposed to oil (inculuding 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.

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.

Leave sufficient space between heater and indoor unit to allow for air movement to prevent the indoor unit from overheating.

If they are installed too closely and the indoor unit temperature exceeds 40 ˚C, malfunctions or fire may result.

Keep the heater clean to keep the indoor unit from accumulating dust on the components.

Dust particles that enter the indoor unit may cause fire.

When air conditioner and heater are configured to perform an interlocked operation, do not use any other type of cables except this external heater adapter (CN24RELAY-KIT-CM3).

The use of any other type of cables may result in malfunctions or fire.

Do not build a heater into the indoor unit.

Doing so may result in fire.

2 Parts list

Check that the following parts are included in the package.

(1) External output cable (with a white connector) ................................ 2 in total

Two types of cables with different connectors are included.

(2) Panel heater connector (white connectors) ......................................3 in total

1 Safety Precaution

This

(3) 12 VDC SPST Relay ....................................................................... 1 in total

MANUFACTURED FOR: MITSUBISHI ELECTRIC & ELECTRONICS USA

R410A Series

3 Connection to the Indoor Unit

Use the cables that fit the connectors on the indoor unit control board.

The items listed in this parts list cannot be used with the following models.

• PMFY-BM

• PMFY-AM

(1) External output cables both having white connectors. Connectors are physically different. Please choose the correct connector that fits the

particular PCB. Connectors snap in but should not be too difficult to seat. This cable is used to connect the relay circuit for an interlocked operation with either an electric or a panel heater.

Connect the cable to

CN24 on the indoor unit control board.

(2) Panel heater connector (with a white connector)

This connector is used to perform an interlocked operation with a panel heater. Depending on the indoor unit control board specification, connect the cable either to CN4Y or CN22 as appropriate.

4 Field-supplied Wiring

A basic connection method is shown below.

(2)

CN24

CN22

Remote control board Relay circuit

Adapter

Indoor unit control board

Outdoor unit control board

Electric Heater

power source

Electric Heater or panel heater

Red1

White 2

• PUHY, PURY-PTGMU type Dip switch SW5-2 “ON”

• PUHY, PURY-PYHMU type Dip switch SW5-10 “ON”

• PUMY series Dip

switch SW4-4 “ON”

Preparations in the field

Maximum cable length is 10 m (32ft)

White

White 1

Dip switch SW3-4 “ON”

(applicable only when a panel heater is connected)

CN24

CN22

Remote control board Relay circuit

Adapter

Indoor unit control board

Outdoor unit control board

Electric Heater

power source

Red 1

White2

• PUHY, PURY-PTGMU type Dip switch SW5-2 “ON”

• PUHY, PURY-PYHMU type Dip switch SW5-10 “ON”

• PUMY series Dip

switch SW4-4 “ON”

Preparations in the field

Maximum cable length is 10 m (32ft)

White

White 1

Dip switch SW3-4 “ON”

(applicable only when a panel heater is connected)

(1) Ducted Indoor Units (Except PEFY-P-NMSU-E)

CN4Y

Electric Heater or panel heater

White

(3)

Non-ducted Indoor Units

CN24

CN22

Remote control board Relay circuit

Adapter

Indoor unit control board

Outdoor unit control board

Electric Heater

power source

Electric Heater or panel heater

Red 1

White2

• PUHY, PURY-PTGMU type Dip switch SW5-2 “ON”

• PUHY, PURY-PYHMU type Dip switch SW5-10 “ON”

• PUMY series Dip switch SW4-4 “ON”

Preparations in the field

Maximum cable length is 10 m (32ft)

Dip switch SW3-4 “ON”

White

Ducted Indoor Units (PEFY-P-NMSU-E only)

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