Mitsubishi Electric CITY MULTI CMY-Q100VBK Bedienungsanleitung

When installing or relocating the unit, check

that no substance other than the specified

refrigerant (R410A) enters the refrigerant circuit.

¡Any presence of foreign substance or air can cause abnormal

pressure rise or explosion.

¡For your safety, thoroughly read the following instructions prior to installation.

Safety Precautions

¡Thoroughly read the following “Safety Precautions” to ensure proper installation.

¡Observe the following important safety precautions at all times.

¡Hazards that can occur from incorrect handling are classified by the symbols below:

Mitsubishi Electric Air Conditioner CITY MULTI

Twinning Kit Installation Manual

WARNING

CAUTION

WARNING

Incorrect handling can result in death or serious injury.

Incorrect handling can result in bodily injury and/or structure damage.

❈See the Installation Manual that came with the outdoor unit for installation instructions.

CAUTION

Only a dealer or qualified technician should

perform installation.

¡Improper installation may result in refrigerant gas leakage

and equipment damage.

Do not make any modifications or alterations.

Consult your dealer for repair.

¡Improper installation may result in water leakage, electric shock,

or fire.

In the event of a refrigerant leak, thoroughly

ventilate the room.

¡If refrigerant leaks and comes in contact with an open flame,

toxic gases will be generated.

Properly install all parts according to the

instructions in the Installation Manual.

¡If the wrong twinning pipe or wrong size connecting pipe is

used, air conditioning performance will suffer.

After installation, check for a refrigerant leak.

¡If leaked refrigerant comes in contact with a heat source,

such as a fan heater, stove, or electric grill, toxic gases will be

generated.

Properly dispose of packing materials.

¡Plastic bags can pose suffocation and choking hazards: keep

them out of the reach of children. Tear the plastics bags

before disposing of them.

Do not touch the refrigerant pipes and

refrigerant circuit components with bare

hands during and immediately after operation.

¡During or immediately after operation, certain parts of the unit

such as pipes and compressor may be either very cold or hot,

depending on the state of the refrigerant in the unit at the

time. To reduce the risk of frostbites and burns, do not touch

these parts with bare hands.

CMY-Q100VBK

WT05688X01

Twinning pipe(high pressure)

To BC controller

Twinning kit(low pressure)

Heat source unit 1 Heat source unit 2

1780

880 880

1. Confirming the Package Contents

The following items are included with the Twinning Kit (CMY-Q100VBK). Verify that all items are present before starting installation.

❈ Always use the twinning pipes included in the kit when preparing the twinning kit.

If the field-supplied pipes do not fit the parts in the kit, use the accessory piping parts listed below.

(1) Package contents

Model

CMY-Q100VBK

Model

CMY-Q100VBK

Low-pressure

twinning kit 2

High-pressure

twinning pipe 3Fixing screw 4Elbow pipe

Ø22.2 [7/8] 5Elbow pipe

Ø28.58 [1-1/8] 6

High-pressure

pipe 7Pipe cover

ID22.2 [7/8]

-ID25.4 [1]

Insulation cover

Installation Manual

(this booklet)

OD22.2 [7/8]

-ID25.4 [1]

OD22.2 [7/8]

-ID19.05 [3/4]

OD19.05 [3/4]

-ID15.88 [5/8]

CCable tie

(2) List of field-supplied parts

· Refrigerant pipes other than the ones provided in the kit

· Heat-resistant insulation material (for field-supplied refrigerant pipes)

· Insulation cover tape

CMY-Q100VBK

PQRY-P600YSHM-A

PQRY-P300YHM-A

PQRY-P300YHM-APQRY-P250YHM-A

PQRY-P250YHM-A

PQRY-P500YSHM-A

Low pressure

Twinning pipe connection size

Heat Source unit 1

Component unit name

Package unit name

BC controller~Twinning pipe a

PQRY-P400YSHM-A

PQRY-P200YHM-A

High pressure

Low pressure

High pressure

Twinning pipe Kit(optional parts)

Twinning pipe~Heat Source unit 1

Twinning pipe~Heat Source unit 2

Heat Source unit 2

PQRY-P450YSHM-A

PQRY-P250YHM-A

PQRY-P200YHM-A

PQRY-P550YSHM-A

PQRY-P300YHM-A

PQRY-P250YHM-A

Ø28.58(*)

Ø22.2 Ø28.58

Ø19.05

Ø22.2

Ø19.05

2. Selecting the Correct Size Refrigerant Pipes and Using the Twinning Kit

(1) Pipe size

1Field-supply the pipes to be connected to the kit.

2If the pipe was cut with a pipe cutter, remove the

burrs and eliminate foreign materials before

connecting.

❈

On the low-pressure side, the twinning kit connects to

the field-supplied pipes inside the heat source unit.

The distributor on the low-pressure side must be

placed in the heat source unit that has a larger

capacity index of the two, regardless of the relative

positions of the heat source units or their addresses.

If the distributor is placed in the heat source unit that

has a smaller capacity, refrigerant will not be properly

distributed and compressor failure may result.

( If heat source units that have the same capacity are

used in combination, the distributor can be placed in

either heat source unit.)

❈Choose the correct size pipe using the above table. Connect the field- supplied pipe to the twinning kit for the sizes in the

table that are marked with an asterisk (*).

See reverse.

Downslope Upward slope

To BC controller

High-pressure twinning pipe

If high-pressure twinning pipe is installed above the base of the

heat source unit, it should be no more than 200mm [7-7/8 in.].

200mm

[7-7/8 in.]

max.

High-pressure

twinning pipe To indoor unit

Heat source unit 1 Heat source unit 2

(6) Pipe connection (high-pressure side)

Make sure the pipes from the twinning pipe to the heat source unit are sloped downwards.

Field piping

(Low-pressure connecting pipe:To BC Controller)

Field piping

(Low-pressure connecting pipe:To heat source unit)

Field piping

(High-pressure connecting pipe)

Wrap the pipe cover here.

(Keep out of contact with the adjacent sheet metal.)

· To prevent the refrigerant service valve from being damaged, do

not let its temperature rise above 120

˚C [248˚F]

Place a wet towel on the refrigerant service valve before brazing

the pipes.

· Direct the blazing torch flame away from the adjacent cables and

sheet metal to keep them from being damaged.

CAUTION

(2) Connecting the twinning pipe kit

(1) Braze the high-pressure pipe (6) to the refrigerant

service valve.

(2) Screw down the low-pressure twinning pipe kit (1) to the

sheet metal of the refrigerant service valve with the

screws (3), and braze it to the refrigerant service valve.

(3) Braze the elbow (5) to the field-piping first, and then

braze it to the low-pressure twinning pipe kit (1).

(4) Braze the elbow (4) to the low-pressure pipe in the

middle.

Note

1. Exercise caution not to burn the cables while brazing the

pipes.

2. Before brazing pipes to the refrigerant service valve, place a

wet towel on the valve to keep its temperature from rising

above 120 ˚C [248˚F]

(5) Wrap the u-bend of the low-pressure twinning pipe kit

(1) with the pipe cover (7), and tie a band (C) around

it to keep it in place.

WT05688X01

4. Insulation Cover Installation

Install the insulation cover on the twinning kit after brazing the pipes and twinning kit.

Insulate all refrigerant pipes. Insulate the high-pressure and low-pressure pipes separately, and pipes located inside the unit as well as

the outside. Use heat-resistant insulation material (Heat resistant : at least 120˚C [248˚F], Thickness: high-pressure = 10 mm [13/32 in.],

low-pressure = 20 mm [13/16 in.] ). Position the edges of the insulation cover and heat-resistant insulation material so as not to leave a

gap, and then wrap the exterior perimeter of the pipe joints and middle with tape (field-supplied).

Tape (field-supplied)

Overlap margin of the tape

Insulation cover Heat-resistant insulation material (field-supplied)

Insulation covers can shrink.

Overlap the tape as shown in the left

figure so that there will be no gap in-

between the insulation cover or

field-installed insulation material.

field-supplied pipe

Heat-resistant insulation material (field-supplied)

field-supplied pipe

2High-pressure

twinning pipe BInsulation cover

Tape (field-supplied)

To be gap free To be gap free

See reverse.

3. Pipe Connection Example

Connect the pipes between heat source units,

referencing the figure below.

1Low-pressure

twinning kit

Low-pressure connecting pipe

(Between heat source units)

2High-pressure twinning pipe Main high-pressure pipe (To BC controller)

Main low-pressure pipe (To BC controller)

ID22.2 [7/8]

-ID25.4 [1]

5. Miscellaneous Notes

Secure the field-supplied pipes with a pipe cover and a cable tie in place to keep them from coming in contact with other pipes as

necessary.

Install the insulation cover so that the edges of the cover meet at the top.

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