Mitsubishi Heavy Industries V Multi 100VNX Technical Manual Download

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248

'13 • P

C-T
-197

Flaring

Finishing work and fixing

Connection wiring,

Earth wiring

Outer tape

Refrigerant piping

Drain hose

Wood screw

Clamp

Cover the exterior portion with outer tape and
shape the piping so it will match the contours
of the route that the piping to take.
Also fix the wiring and pipings to the wall with
clamps.

RKY012A011

Open/close and detachment/attachment of the air inlet panel

○

To open, pull the panel at both ends of lower part
and release latches, then pull up the panel until
you feel resistance.
(The panel stops at approx. 60 open position)

○

To close, hold the panel at both ends of lower
part to lower downward and push it slightly until
the latch works.

○

To remove, pull up the panel to the position
shown in right illustration and pull it toward you.

○

To install, insert the panel arminto the slot on the
front panel fromthe position shown in right
illustration, hold the panel at both ends of lower
part, lower it downward slowly, then push it
slightly until the latch works.

How to remove and fit the front panel

○

Removing

Remove the air inlet panel.
Remove the 5 set screws.
Remove the 4 latches in the upper section.
Move the lower part of the panel forward and
push upwards to remove.

1
2
3
4

○

Fitting

Do remove the air filter.
Cover the body with the front panel.
Fit the 4 latches in the upper section.
Tighten the 5 set screws.
Fit the air filter.
Fit the air inlet panel.

1
2
3
4
5
6

Open the air inlet panel.
Remove the service panel.
Remove the wiring clamp.
Connect the connecting wire securely to the terminal block.
1) Connect the connection wire securely to the terminal

block. If the wire is not affixed completely, contact will be
poor, and it is dangerous as the terminal block may heat
up and catch fire.

2) Take care not to confuse the terminal numbers for indoor

and outdoor connections.

Fix the connecting wire by wiring clamp.
Attach the service panel.
Close the air inlet panel.

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2
3
4

5
6
7

ELECTRICAL WIRING WORK

CAUTION

In case of faulty wiring connection, the indoor unit stops, and then
the run lamp turns on and the timer lamp blinks.

Use cables for interconnection wiring to avoid loosening of the wires.
CENELEC code for cables Required field cables.

H05RNR4G1.5 (example) or 245IEC57

Harmonized cable type

300/500 volts

Natural-and/or synth, rubber wire insulation

Polychloroprene rubber conductors insulation

Stranded core

4or5 Number of conductors

One conductor of the cable is the earth conductor

(yellow/green)

1.5

Section of copper wire (mm

)

Preparation of indoor unit

Mounting of connecting wires

• Forced cooling operation

Turn on a power supply again after a while after turn off a power supply.
Then press continually the ON/OFF button 5 seconds or more.

○

Install the removed flared nuts to the pipes to be connected,
then flared the pipes.

○

Remove the flared nuts. (on both liquid and gas sides)

Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. fromentering them.

CONNECTION OF REFRIGERANT PIPINGS

Preparation

(Do not turn)

Press

Remove

5°

Dimension A
Liquid side ø6.35 : 9.1 (mm)
Gas side ø9.52 : 13.2 (mm)

ø12.7 : 16.6 (mm)

CAUTION

Do not apply refrigerating machine
oil to the flared surface.

Indoor

Copper pipe diameter

Use a flare tool designed for R410A or a conventional flare tool.
Please note that measurement B (protrusion fromthe flaring block) will vary depending on the
type of a flare tool in use.
If a conventional flare tool is used, please use a copper pipe gauge or a similar instrument to
check protrusion so that you can keep measurement B to a correct value.

Clutch type flare tool for
R410A

Conventional (R22) flare tool

ø6.35
ø9.52
ø12.7

0.0 - 0.5
0.0 - 0.5
0.0 - 0.5

1.0 - 1.5
1.0 - 1.5
1.0 - 1.5

1.5 - 2.0
1.5 - 2.0
2.0 - 2.5

Measurement B (mm)

Clutch type

Wing nut type

CAUTION

Do not apply excess torque to the flared nuts.
Otherwise, the flared nuts may check depending.

○

Arrange the drain hose in a downward angle.

○

Avoid the following drain piping.

○

Pour water to the drain pan located under the heat exchanger, and ensure that the water is discharged outdoor.

○

When the extended drain hose is indoor, securely insulate it with a heat insulator available in the market.

CAUTION

Wall

Gutter

Pipe accommodating section

Since this air conditioner has been designed to collect dewdrops on the rear
surface to the drain pan, do not attach the power cord above the gutter.

Drainage

Go through all installation steps and check if the drainage is all right.
Otherwise water leak may occur.

Higher than specified

The drain hose

tip is in water.

Wavy

The drain hose

tip is in the gutter.

The gap to the ground is

5 cmor less.

Odor from

the gutter

Installation Steps

Pass the pipe through
the hole in the wall,
and hook the upper
part of the indoor unit
to the installation board.

Gently push the lower
part to secure the unit.

• Howto remove the indoor unit fromthe installation board

Fixing of indoor unit

Push up at the marked portion of the indoor unit base lower latch, and slightly pull it toward
you. (both right and left hand sides) (The indoor unit base lower latch can be removed from
the installation board)
Push up the indoor unit upward. So the indoor unit will be removed fromthe installation board.

CONCERNING TERMINAL CONNECTION FOR AN INTERFACE

Remove the front panel and lid of control.
Remove the control.
There is a terminal (respectively marked with CNS) for the indoor control board.
In connecting an interface, connect to the respective terminal securely with the connection harness
supplied with an optional “Interface connection kit SC-BIKN-E ” and fasten the connection harness
onto the indoor control box with the clamp supplied with the kit.
For more details, please refer to the user’s manual of your “Interface connection kit SC-BIKN-E ”.

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2
3

○

Connect the pipes on both liquid and gas sides.

○

Tighten the nuts to the following torque.
Liquid side (ø6.35) : 14.0 - 18.0 N·m(1.4 - 1.8 kgf·m)
Gas side (ø9.52) : 34.0 - 42.0 N·m(3.4 - 4.2 kgf·m)

(ø12.7) : 49.0 - 61.0 N·m(4.9 - 6.1 kgf·m)

Connection

Insulation of the connection portion

Indoor

Liquid side
Gas side

(Do not turn)

• Cover the indoor unit s flare-connected joints, after they are checked for a gas leak, with an indoor unit

heat insulating material and then wrap themwith a tape with an attached insulation pad placed over
the heat insulating material’s slit area.

Cover the coupling with insulator and then cover it with tapes.

Vinyl tape

Use an attached insulation pad for heat insulation.

Position it so that the slit area faces upward.

• Flaring work

Measurement B

block

Copper pipe

○

Uncover the wireless remote control, and mount the batteries [R03 (AAA, Micro),

2 pieces] in the body regularly.

(Fit the poles with the indication marks,

＋

−

without fail)

○

Conventionally, operate the wireless remote control by holding

in your hand.

○

Avoid installing it on a clay wall etc.

Cover

CAUTION

Wood screws
ø3.5 X 16

Wireless remote control

Battery

INSTALLATION OF WIRELESS REMOTE CONTROL

Mounting method of battery

Fixing to pillar or wall

Do not use newand
old batteries together.

Disconnect

TIME

SETU

ACL

When two air conditioners are installed in the same room, use this setting when the two air conditioners are not operated with one wireless remote control. Set the
wireless remote control and indoor unit.

INSTALLING TWO AIR CONDITIONERS IN THE SAME ROOM

Setting the wireless remote control

Pull out the cover and take out batteries.
Disconnect the
switching line next
to the battery with
wire cutters.

Insert batteries. Close the cover.

1
2

Setting an indoor unit

1
2

Turn off the power supply, and turn it on after 1 minute.
Point the wireless remote control that was set according
to the procedure described on the left side at the indoor
unit and send a signal by pressing the ACL switch on
the

wireless remote control.

Since the signal is sent in about 6 seconds after the ACL switch
is pressed, point the

wireless remote control at the indoor unit for

some time.
Check that the reception buzzer sound "pip" is emitted fromthe
indoor unit.
At completion of the setting, the indoor unit emits a buzzer sound
"pip". (If no reception tone is emitted, start the setting fromthe
beginning again.)

INSTALLATION TEST CHECK POINTS

After installation

The power supply voltage is correct as the rating.
No gas leaks fromthe joints of the operation valve.
Power cables and crossover wires are securely fixed to the terminal board.
The screwof the service panel is tightened securely.

Test run

Air conditioning operation is normal.
No abnormal noise.
Water drains smoothly.
Protective functions are not working.

The remote control is normal.
Operation of the unit has been explained to the customer. (Three-minutes restart preventive timer)
When the air conditioner is restarted or when changing the operation, the unit will not start operating for
approximately 3 minutes. This is to protect the unit and it is not a malfunction.

Operation valve is fully open.
The pipe joints for indoor and outdoor pipes have been insulated.

Check the following points again after completion of the installation, and before turning on the power. Conduct a test run again and ensure that the unit operates properly.
At the same time, explain to the customer howto use the unit and howto take care of the unit following the user’s manual.

Reception

pip

Installing the air-cleaning filters

Air-cleaning filter

1. Open the air inlet panel and remove the air filters.
2. Install the air-cleaning filter in the filter holders, and then install the filter holders in the air conditioner.

• Each air-cleaning filter can be installed in the left or right filter holder.

3. Install the air filters and close the inlet panel.

Connect charge hose to check joint of outdoor unit.
Liquid side : Close the liquid valve with hexagon wrench key.
Gas side : Fully open the gas valve.
Carry out cooling operation. (If indoor temperature is low, operate
forced cooling operation.)
After lowpressure gauge become 0.01MPa, stop cooling operation
and close the gas valve.

1
2

○

In order to protect the environment, be sure to pump down (recovery of refrigerant).

○

Pump down is the method of recovering refrigerant fromthe indoor unit to the
outdoor unit when the pipes are removed fromthe unit.

HOW TO RELOCATE OR DISPOSE OF THE UNIT

The marked portion of the indoorunit
base lower latch.

Indoor unitI

Latch
(2 locations)

Installation
borad

Installation borad

Wall