Daikin VKM50GMV1, VKM80GMV1, VKM100GMV1, VKM50GV1, VKM80GV1 Installation manuals

Total Heat Exchanger

INSTALLATION MANUAL

English

HRV (Heat Reclaim Ventilation) -with DX Coil-

MODELS
(Ceiling mounted duct type)

With DX coil & Humidifier With DX coil

VKM50GMV1 VKM50GV1
VKM80GMV1 VKM80GV1
VKM100GMV1 VKM100GV1

HRV

HRV;Heat Reclaim Ventilation

Please read this installation manual carefully and install the unit properly to keep it at full capacity for a long time.
Please provide some necessary parts, for example round hoods, air suction/discharge grilles etc., before the installation of the unit.

HRV;Wärmerückgewinnungslüftung

Lesen Sie dieses Installationshandbuch bitte sorgfältig durch, und installieren Sie die Einheit korrekt, so daß sie ihre Leistungsfähigkeit noch lange
Zeit behält.
Einige erforderliche Teile wie z. B. Rundkappen, Luftansaug-/Lufausblasgitter müssen bereits vor der Installation der Einheit vorhanden sein.

HRV;Ventilation avec récupération de chaleur

Veuillez lire attentivement ce Manuel d’installation et installer correctement l’appareil de manière à ce qu’il puisse être utilisé pendant une longue
période de temps sans aucun dérangement.
Veuillez vous procurer certains éléments nécessaires, tels que des capuchons de formes arrondies, des grilles d’aspiration/évacuation d’air.,avant
l’installation de cette unité.

HRV;Ventilación con recuperación de calor

Por favor lea cuidadosamente el manual de instalacion e instale correctamente la unided para que pueda conservar su plena capacidad durante un
largo periodo.
Por favor, antes de proceder a la instalacion de la unidad, proporcione las piezas necesarias, por ejemple tapas redondas, rejillas de aspiracion y de
impulsion de aire, etc.

HRV;Ventilazione per recupero del calore

Leggere attentamente questo mauale ed installare correttamente l’unit in modo da farla funzionare a lungo al massimo delle sue capacita.
Prima dell’installazione, è opportuno disporuno delle partinec-essarie, come ganci arrotondati, griglie di aspirazione/di mandata, ecc.

HRV;

Αερισìüò ìε ανÜκτηση θερìüτηταò

ÄιαβÜστε προσεκτικÜ το παρüν εγχειρßδιο εγκατÜστασηò και εγκαταστÞστε σωστÜ τη ìονÜδα για να διατηρÞσετε την πλÞρη απüδοσÞ τηò
για πολý καιρü.
Προìηθεìτεßτε ìερικÜ απαραßτητα εξαρτÞìατα π.χ. κυκλικÜ καλýììατα, εσχÜρεξ αναρρüφησηò/κατÜθλιψηò κ.τ.λ. πριν εγκαταστÞσετε τη
ìονÜδα.

HRV;Hergebruik van warmte

Lees eerst zorgvuldig deze installatiehandleiding en installeer de unit op de juiste manier, zodat deze gedurende lange tijd zijn volledige vermogen
kan leveren.
Zorg dat alle componenten aanwezig zijn, zoals ronde kappen, luchtaan-en afvoerroosters etc. voordat u de unit gaat installeren.

HRV;Ventilação de Recuperação Térmica

Leia atentamente este manual e instale correctamente esta unidade para que esta funcione inteiramente durante um longo período de tempo.
Adquira algumas peças necessárias, por exemplo, tampas redondas, grelhas de aspiração/exaustão, etc., antes da instalação da unidade.

HRV;

Вентиляция с реãенерацией тепла

Внимательно ознаêомьтесь с данным рóêоводством и óстановите блоê надлежащим образом, чтобы он работал на полнóю
мощность в течение долãоãо времени.
Перед óстановêой блоêа подãотовьте необходимые детали, например êолпаê оêрóãлой формы, решетêи всасывания/выпóсêа
воздóха и т.п.

Deutsch

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Nederlands

Portugues

Рóссêий

DAIKIN.TCF.009

KEMA

59277-KRQ/ECM95-4303

Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome,

Kita-ku, Osaka, 530-8323 Japan

Yoshiaki Hirata

Manager Quality Control Department

Sakai, 1st of Feb. 2005

VKM50GMV1, VKM50GV1

VKM80GMV1, VKM80GV1

DAIKIN INDUSTRIES, LTD.

VKM100GMV1, VKM100GV1

EN60335-2-40,

3P155750-1

With DX coil &Humidifier VKM50GMV1

VKM80GMV1
VKM100GMV1

With DX coil VKM50GV1

VKM80GV1
VKM100GV1

CONTENTS

1 SAFETY CONSIDERATIONS ........................................ 1

2 BEFORE INSTALLATION............................................... 2

3 SELECTING INSTALLATION SITE ................................ 3

4 PREPARATIONS BEFORE INSTALLATION................... 4

5 THE METHOD OF INSTALLATION................................ 4

6 DRAIN PIPING AND WATER SUPPLY WORK .............. 5

7 REFRIGERANT PIPING WORK .................................... 6

8 DUCT CONNECTION .................................................... 7

9 ELECTRIC WIRING WORK ........................................... 8

10 WIRING EXAMPLE AND HOW TO SET

THE REMOTE CONTROLLER ...................................... 9

11 FIELD SETTING AND TEST RUN............................... 13

12 WIRING DIAGRAM ...................................................... 16

1 SAFETY CONSIDERATIONS

Please read these “SAFETY CONSIDERATIONS” carefully
before installing HRV and be sure to install it correctly.

The safety precautions listed here are divided into two catego­ries.
In either case, important safety information is listed which must
be read carefully.

WARNING ............. Failure to observe a warning may

result in death or serious injury.

CAUTION

After completing the installation, make sure that the unit oper­ates properly during the start-up operation. Please instruct the
customer on how to operate the unit and keep it maintained.
Also, inform customers that they should store this installation
manual along with the operation manual for future reference.

•

Ask your dealer or qualified personnel to carry out installation
work. Do not try to install the machine yourself
Improper installation may result in water leakage, electric
shocks or fire.

•

Installation should be done following the installation manual
and no changes should be made to the unit.
Incorrect installation may cause leaking, electric shocks, or
fire. Injuries may result if the HRV falls.

•

Install the unit on a foundation strong enough to withstand
the weight of the unit.
A foundation of insufficient strength may result in the equip­ment falling and causing injuries.

•

Do not allow exhaust air to enter the outside air intake vent.
This may cause the air of the room to become contaminated,
harming the health.

•

Locate the outside air intake vent so that it does not take in
exhaust air which contains combustion air, etc.
Incorrect installation may cause a loss of oxygen in the room,
leading to serious accidents.

•

Make sure that a separate power supply circuit is provided for
this unit and that all electrical work is carried out by qualified
personnel according to local laws and regulations and this
installation manual.
An insufficient power supply capacity or improper electrical
construction may lead to electric shocks or fire.
Insufficient power supply capacity or incorrect wiring may
cause electrical shocks or fire.

............... Failure to observe a caution may result

in injury or damage to the equipment.
These too might lead to serious injury
depending on the circumstances.

WARNING

.

HRV(Heat Reclaim Ventilation) -with DX Coil-

•

Use only accessories and manufacturer-specified parts

Total Heat Exchanger

Installation

manual

when installing.
The use of parts other than specified may cause drop of the
unit, water leakage, electric shock, fire or other accidents.

•

Be sure to ground.
Do not connect the ground wire to gas or water pipes, light­ning rod or a telephone ground wire.
Incomplete grounding may result in electric shocks.

•

Make sure that all wiring is secured, the specified wires are used,
and no external forces act on the terminal connections or wires.
Improper connections or installation may result in overheat­ing or fire.

•

When wiring the power supply and connecting the remote
controller wiring and transmission wiring, position the wires
so that the electric parts box lid can be securely fastened.
Improper positioning of the electric parts box lid may result in
electric shocks, fire or the terminals overheating.

•

When installing the unit in a small room, take measures
against to keep refrigerant concentration from exceeding
allowable safety limits in the event of refrigerant leakage.
Contact the place of purchase for more information.
Excessive refrigerant in a closed ambient can lead to oxygen
deficiency.

•

If the refrigerant gas leaks during installation, ventilate the
area immediately.
Toxic gas may be produced if the refrigerant gas comes into
contact with fire.

•

After completing the installation work, check that the refriger­ant gas does not leak.
Toxic gas may be produced if the refrigerant gas leaks into
the room and comes into contact with a source of fire, such
as a fan heater, stove or cooker.

•

Do not directly touch any refrigerant which has leaked out of
refrigerant piping connections, etc.
This may cause frostbite.

CAUTION

•

Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in elec­tric shocks or fire.

•

Install the indoor and outdoor units, power supply wiring and
connecting wires at least 1 meter away from televisions or
radios in order to prevent image interference or noise.
(Depending on the radio waves, a distance of 1 meter may
not be sufficient enough to eliminate the noise.)

•

While following the instructions in this installation manual,
install drain piping in order to ensure proper drainage and
insulate piping in order to prevent condensation.
Improper drain piping may result in water leakage and prop­erty damage.

•

Install the two outdoor ducts with down slope to prevent rain­water from entering the unit.
If this is not done completely, water may enter the building,
may damage furniture, and cause electric shocks and fire.

•

Insulate the two outdoor ducts and the supply air duct to pre­vent condensation.
If this is not done completely, water may enter the building,
may damage furniture, etc.

•

Insulate the duct and the wall electrically when a metal duct
is to be penetrated through the metal lattice and wire lattice
or metal lining of a wooden structure wall.
Inproper duct work may cause electric shocks or fire.

•

Do not install the unit in the following locations:

a. Place subjected to high temperature or direct flame.

May result in fire or overheating.

b. Where a mineral oil mist or an oil spray or vapor is pro-

duced, for example in a kitchen.
This may cause fire.

English 1

c. Place such as machinery plant and chemical plant

where gas, which contains noxious gas or corrosive
components of materials such as acid, alkali organic sol­vent and paint, is generated. Place where combustible
gas leakage is likely.
Copper piping and brazed joints may corrode, causing
refrigerant to leak or poisoning and fire due to leaked
gas.

d. Place such as bathroom subjected to moisture.

Electric leak or electric shocks and other failure can be
caused.

e. Locations below freezing point.

Using the unit at temperatures below 0°C may cause the
drain pan the supply and discharge piping, the humidify­ing element, the solenoid valves, and other parts to
freeze, which can cause accidents.

f. Near machinery emitting electromagnetic waves.

Electromagnetic waves may disturb the operation of the
control system and result in a malfunction of the equip­ment.

•

Make sure the temperature and humidity near the unit and
the air suction/discharge air grille is within limit dictated by
the usage conditions.
Do not install in refrigerated truck or other locations with low
temperatures or near heated pools.
This may cause fires or short circuits.

•

Make sure that a snow protection measure is taken. If no pro­tection snow may enter through the outdoor ducts, and cause
damaging furniture and electric shock and fire.

2 BEFORE INSTALLATION

The accessories needed for installation must be retained in
your custody until the installation work is completed. Do
not discard them!

After carrying in the unit, protect it with packing materials to pre­vent it from scratching until installation work is done.

[1] Decide upon a line of transport.

[2] Leave the unit inside its packaging while moving, until reach-

ing the installation site. Where unpacking is unavoidable,
use a sling of soft material or protective plates together with
a rope when lifting, to avoid damage or scratches to the unit.

Hold the unit by the hanger brackets (4) when opening the
crate and moving it, and do not lift it holding on to any other
part (especially the refrigerant piping, the drain piping, the
water supply piping, and the duct connecting flange).

•

Be sure to check the type of R410A refrigerant to be used
before installing the unit. (Using an incorrect refrigerant will
prevent normal operation of the unit.)

•

For the installation of an outdoor unit, refer to the installa­tion manual attached to the outdoor unit.

2. 1 PRECAUTIONS

•

Be sure to instruct customers how to properly operate the
unit (especially maintenance of air filter, and operation proce­dure) by having them carry out operations themselves while
looking at the manual.

•

Where the air contains high levels of salt such as that near
the ocean and where voltage fluctuates greatly such as that
in factories. Also in vehicles or vessels.

2. 2 ACCESSORIES

Check the following accessories are included with your unit.

Duct con-

Name

Quantity 4 pcs. 24 pcs.

Shape

Name

Quantity

Shape

Name

Quantity

Shape

necting
flange

Half-union
joint
(Copper
piping joint)

VKM-GMV1:1 pc.
VKM-GV1: 0 pc.

Water sup­ply piping
insulation
cover

VKM-GMV1:
1 pc.
VKM-GV1:
0 pc.

I.D.: φ15

M4 tapping
screw (For
connecting
duct)

Flare nut
(Copper
piping joint)

VKM-GMV1:1 pc.
VKM-GV1: 0 pc.

Sealing
material

1 pc.

Water supply piping
with strainer

VKM-GMV1: 1 pc.
VKM-GV1: 0 pc.

Refrigerant piping

insulation cover

1 set

I.D.: φ35 I.D.: φ26

Clamp

VKM-GMV1:
8 pcs.
VKM-GV1:
6 pcs.

(Other)

• Installation
manual

• Operation
manual

2. 3 OPTIONAL ACCESSORIES

•

This unit can be made a part of two different systems: as part
of the combined operation system used together with VRVII
SYSTEM Air Conditioners, and as the independent system
using only the HRV. An operating remote controller is
required for this unit when using the unit as an independent
system.
Select a suitable remote controller from below table accord­ing to customer request and technical materials.

Ta bl e

Remote controller type BRC1A62, BRC1D527

NOTE) 1
If you use the remote controller which is not listed in above
table, please consult your dealer.
NOTE) 2
We recommend the remote controller “BRC1D527” espe­cially when the unit is used as independent system. Because
it displays the ventilation mode and can be selected ventila­tion fan mode with the button.

•

When installing the unit, have ready the round shape hood,
the air discharge grille and the air suction grille, and other
parts needed for the installation.
Consult your Daikin dealer when selecting optional accesso­ries.

2 English

FOR THE FOLLOWING ITEMS, TAKE SPECIAL CARE
DURING CONSTRUCTION AND CHECK AFTER
INSTALLATION IS FINISHED.

a.

Items to be checked after completion of work

Items to be checked

Are the indoor and
outdoor unit fixed
firmly?

Is the outdoor duct
installed to outside
with down slope?

(Refer to page 8 Fig. 16)

Is the gas leak test
finished?

Is the unit fully insu­lated?

Does drainage flow
smoothly?

Does the power sup­ply voltage corre­spond to that shown
on the name plate?

Are wiring and piping
correct?

Is the unit safely
grounded?

Is wiring size accord­ing to specifications?

Is something blocking
the air outlet or inlet of
either the indoor or
outdoor units?

Are refrigerant piping
length and additional
refrigerant charge
noted down?

Is water supplied with
the water supply pip­ing connected?

Please check all items listed in the “SAFETY CONSIDER­AT I ON S ” above once again.

b.

Items to be checked at time of delivery

Items to be checked Check

Did you explain about operations while showing
the operation manual to your customer?

Did you hand the operation manual and warranty
over to your customer?

c.

Points for explanation about operations

The items with WARNING and CAUTION marks in
the operation manual are the items pertaining to
possibilities for bodily injury and material damage in
addition to the general usage of the product. Accordingly, it
is necessary that you make a full explanation about the
described contents and also ask your customers to read the
operation manual.

If not properly done,
what is likely to occur

The units may drop,
vibrate or make noise.

Condensate water
may drip.

It may result in insuffi­cient cooling.

Condensate water
may drip.

Condensate water
may drip.

The unit may malfunc­tion or the compo­nents burn out.

The unit may malfunc­tion or the compo­nents burn out.

Dangerous at electric
leakage.

The unit may malfunc­tion or the compo­nents burn out.

It may result in insuffi­cient cooling.

The refrigerant
charge in the system
is not clear.

Not humidified.

Check

3 SELECTING INSTALLATION SITE

CAUTION

•

When moving the unit during or after unpacking, make sure
to lift it by holding its hanger brackets. Do not exert any pres­sure on other parts, especially the refrigerant piping, drain
piping, water supply piping and duct connecting flange.

•

If you think the humidity inside the ceiling might exceed 30°C
and RH80%, reinforce the insulation on the inter-unit piping.
Use glass wool or polyethylene foam as insulation so that it is
no thicker than 10mm and fits inside the ceiling opening.

•

Use glass wool or polyethylene form of 10mm or more thick
which fit into ceiling opening as insulation material.

(1) Select an installation site where the following conditions

are fulfilled and that meets with your customer’s approval.

•

Install in a place which has sufficient strength and stabil­ity. (Beams, ceiling, and other locations capable of fully
supporting the weight of the unit.)
Insufficient strength is dangerous. It may also cause
vibration and unusual operating noise.

•

Where piping between indoor and outdoor units is possi­ble within the allowable limit. (Refer to the installation
manual for the outdoor unit.)

•

Where nothing blocks air passage.

•

Where condensate can be properly drained.

•

Install in a location where the air around the unit or taken
into the humidifier will not drop below 0°C.

•

Do not install the unit directly against a ceiling or wall.
(If the unit is in contact with the ceiling or wall, it can
cause vibration.)

•

Where sufficient clearance for maintenance and service
can be ensured. (Refer to Fig. 1)

Unit (mm)

600

Electric parts box

l



Select the ∗H dimension such that a downward slope
of at least 1/100 is ensured as indicated in “6 DRAIN
PIPING AND WATER SUPPLY WORK”.

[PRECAUTION]

•

Install the indoor and outdoor units, power supply wiring and
connecting wires at least 1 meter away from televisions or
radios in order to prevent image interference or noise.
Depending on the radio waves, a distance of 1 meter may
not be sufficient enough to eliminate the electric noise.

•

The bellows may not be able to be used in some disc­tricts, so exercise caution. (Contact your local govern­ment office or fire department for details.)

•

When discharging exhaust air to a common duct, the
Building Standard Law requires the use of fire-proof
materials, so attach a 2m copper plate standing duct.

(2)

Use suspension bolts for installation. Check whether
the ceiling is strong enough to support the weight of
the unit or not. If there is a risk, reinforce the ceiling
before installing the unit.

(Installation pitch is mentioned as follow. Refer to it to check
for points requiring reinforcing.)

or more

Maintenance
space

minimum hight

∗H

20 or more

Fig. 1

English 3

4 PREPARATIONS BEFORE INSTALLATION

(1)

Confirm the positional relationship between the unit
and suspension bolts. (Refer to Fig. 2)

Leave space for servicing the unit and include inspection
hatches. (Always open a hole on the side of the electric
parts box so that the air filters, heat exchange elements,
fans, and humidifier elements can easily be inspected and
serviced.)

1764 Unit (mm)

1688

(Suspension

Exhaust air to
outdoors (EA)

Fresh air from
outdoors (OA)

360(If the inspection
hatch is 450)
140(If the inspection
hatch is 600)

Model A B

VKM50GMV1, VKM50GV1 832 878

VKM80GMV1, VKM80GV1
VKM100GMV1, VKM100GV1

(2)

Make sure the range of the unit’s external static pres­sure is not exceeded.

(See the fan-strength and static performance characteristic
drawings as well as the general catalog for the range of the
external static pressure setting.)

(3)

Open the installation hole. (Pre-set ceilings)

•

Once the installation hole is opened in the ceiling where
the unit is to be installed, pass refrigerant, drain piping,
transmission wiring, and remote controller wiring to the
unit’s piping and wiring holes.
See “6 DRAIN PIPING AND SUPPLY WATER WORK”,

“7 REFRIGERANT PIPING WORK”, and
“10 WIRING EXAMPLE AND HOW TO SET THE
REMOTE CONTROLLER”.

•

After opening the ceiling hole, make sure ceiling is level if
needed. It might be necessary to reinforce the ceiling
frame to prevent shaking.
Consult an architect or carpenter for details.

(4)

Install the suspension bolts.

(Use M10 to M12 suspension bolts.)
Use a hole-in-anchor, sunken insert, sunken anchor for
existing ceilings, or other part to be procured in the field to
reinforce the ceiling to bearing the weight of the unit.
(Refer to Fig. 3)

Note: All the above parts are locally procured.

bolt pitch)

Indoor unit

Return air from
room (RA)

Supply air to
room (SA)

Electric parts box

Inspection hatches

1214 1262

Ceiling slab

Anchor bolt

Antivibration lifting
lug or turn buckle

Suspension bolt

A

B

(Suspension bolt pitch )

Fig. 2

(mm)

5 THE METHOD OF INSTALLATION

CAUTION

Hold underside of the unit or hanger bracket without

〈〈

〈〈

〈〈〈〈

putting force on other parts when unpacking or moving
the unit.

〈〈

〈〈As for the parts to be used for installation work, be sure to

〈〈〈〈

use the provided accessories and specified parts desig­nated by our company.〉〉

(1)

(2)

•

•

(3)

〉〉

〉〉

〉〉〉〉

〉〉

〉〉〉〉

Install the unit temporarily.

•

Attach the hanger bracket to the suspension bolt. Be sure
to fix it securely by using nuts and washers (locally pro­cured) from the upper and lower sides of the hanger
bracket. (Refer to Fig. 4)

Hanger bracket

Nut
Washer

Transportation
anchors

If unnecessary, remove the four transportation
anchors.

•

Loosen the screws.

•

Slide upward and remove the transportation anchors.

•

Securely tighten the screws as before.

CAUTION

The screws shouldn’t be removed from the unit and should
be tightened in order to prevent air from escaping.
Check that foreign objects such as plastic or paper are not
contained in the unit when installing.

•

Install the unit after checking the indoor (SA/RA) and out­door (EA/OA) in accordance with the figure duct layout
precaution label.

•

Do not turn the unit upside down.

Adjust the height of the unit.
(Tighten the double nuts securely.)

Screw

Double nut

Fig. 4

Fig. 3

4 English

(4)

Check the unit is horizontally level.

CAUTION

Use a level to make sure that the unit is level and that
the tilt (downward slope) to the drain piping connection
is within 1°. (Refer to Fig. 5)

(One thing to watch out for in particular is if it is installed so
that the slope is not in the direction of the drain piping, as
this might cause leaking.)

Level

1

Drain hole

0 or

less

10 or less

Drain hole

Level

Dact connecting
flange

CAUTION

Do not connect the drain piping directly to sewage pipes
that smell of ammonia. The ammonia in the sewage might
enter the indoor unit through the drain pipes and corrode
the heat exchanger (Direct expantion coil).

•

Keep the drain pipe short and sloping downwards at a
gradient of at least 1/100 to prevent air pockets from
forming. (Refer to Fig. 7-2)

•

If converging multiple drain pipes, install according to the
procedure shown below. (Install a drain trap for each
indoor unit.)

Central drain piping

Horizontal line

Fig. 5

(5)

Tighten the upper nut.

(6)

Attach the accessory duct connecting flanges using
the included screws to the outlet and intake holes
(a total of four).

When attaching, make sure the alignment markings on the
unit match up with the triangle on the each duct connecting
flange. (Refer to Fig. 6)

Screws (accessory)
(6pcs.×4, total 24pcs.)

Duct connecting flange marking

Unit alignment

(RA is a φ3 indentation)

Duct connecting
flange

Fig. 6

Duct connecting flange

6 DRAIN PIPING AND WATER SUPPLY

WORK

(1)

Install the drain piping.

•

Make sure the drain works properly.

•

In case of the direct duct connection system,
there is negative pressure inside the unit relative to atmo­spheric pressure when the unit is running, so be sure to
provide drain frap on the drain outlet. (See Fig. 7-1)

Attached drain hose

Bottom of unit

100mm

or more

(Install with a downward slope of at least 1/100)

Fig. 7-2

CAUTION

Water accumulating in the drain piping can cause the
drain to clog.

•

The diameter of the drain pipe should be greater than or
equal to the diameter of the connecting pipe.
(pipe size: PT3/4B)

•

When piping passes indoors, always insulate it all the
way to the base of the drain socket.

•

In areas where freezing may occur, always take steps to
prevent the pipes from freezing.

•

Make sure water doesn’t leak from the drain pipes.

•

Avoid bends and curves in the pipes to prevent them
getting clogged.

•

If you are using central drain piping, follow the procedure
outlined in the figure 7-2.

•

Select central drain pipes of proper size according to the
capacity of the connected unit.

•

Make sure the tip of the drain pipes opens out into a loca­tion where the drainage can be safely processed.

(2)

After piping work is finished, check drainage flows
smoothly.

•

Test the drainage by pouring around 1000cc of water into
the drain pan through the inspection hole by removing the
maintenance cover (10 screws) or through the outlet duct
joint of supply air to room (SA). (Refer to Fig. 8)

Supply air to room (SA)

Duct connecting flange
(accessory)

Maintenance cover

Portable pump

(Locally procured)

Fig. 7-1

50 mm

or more

50 mm

or more

Drain piping

Drain outlet

(Locally procured)

Fig. 8

(3)

Make sure that heat insulation work is executed on the

(Figure shows VKM-GMV1)

following 2 spots to prevent any possibility water leak­age due to dew condensation.

• Indoor drain piping

Bucket
(Locally procured)

• Drain outlet

English 5

(4)

Install the water supply piping. 〈〈〈〈VKM-GMV1 series only〉〉〉〉

CAUTION

When installing the water supply piping, wash the pipes with
tap water so that all dirt is removed from them or install a
drain valve somewhere along the piping and drain the pipes
thoroughly until the water flowing through them is clear.
Make sure no cutting oils or detergents get into the pipes.

•

Connect the water supply piping with strainer (acces­sory), other pipings and valves (locally procured) to the
indoor unit as shown in the figure at below.

Water supply piping
with strainer

(accessory)

Water supply shut-off
valve

(Locally procured)
Water supply pipe

(Locally procured)

Cap

(Locally procured)

Drain valve

(Locally procured)

[PRECAUTION]

•

When installing the water supply piping, do not pass pip­ing in front of the maintenance cover, as this will make it
impossible to remove the humidifier element.

•

Include the water supply piping with strainer (included), a
water supply shut-off valve, and a drain valve (both locally
procured) somewhere along the water supply piping that
can be reached from the inspection hole.

•

It is impossible to connect the water supply piping directly
to public piping. Use a cistern tank (of the approved type)
if you need to get your water supply from public piping.

•

When using copper piping for the water supply connec­tions, replace the included half-union joints.

(Refer to Fig. 9)

Replacement of joints when using copper connections

Water

Flare nut

(accessory) (accessory)

Half-union joint

supply
piping
side

Copper piping

Y-shaped

Fig. 9

•

Use two spanners when attaching or removing pipes to

Exchange the included half-union joint

Remove

strainer

the half-union joints.

•

Secure the water supply piping without applying pressure

[PRECAUTIONS]

•

Use pure water (city water, tap water or equivalent) that
satisfies the standard regulated by the law of each coun­try for water supply to the humidifier when performing
anti-sweat work.

•

Dirty water may cause valves to clog, dirt to accumulate
in water tanks, and resulting in poor humidifier perfor­mance. (Never use water from a cooling tower or warm
water for heating.)

•

Make sure the supply water is between 5°C and 40°C in
temperature and 0.02MPa to 0.49MPa (0.2kg/cm

2

5kg/cm2) in pressure. Include a pressure release valve
between the humidifier and the strainer if the water pres­sure will be higher than this range.

•

Use city water or clean water and take steps to prevent
condensation from forming.

to

Unit
side

•

Also, if the supply water is hard water, use a water soft­ener because of short life.
∗ Life of humidifying element is about 3 years (4,000

hours), under the supply water conditions of hardness:
150mg/l.
(Life of humidifying element is about 1 year (1,500
hours), under the supply water conditions of hardness:
400mg/l.)
Annual operating hours: 10 hours / day × 26 days /
month × 5 month = 1,300 hours

(5)

Insulate all piping that passes indoors.

After checking that the water supply piping connections do no
leak, insulate them using the included insulation as shown in
Fig. 10. (Tighten both edges with clamping material.)

(Refer to Fig. 10)

Clamp

(accessory)

Insulation
(for water supply piping)

(accessory)

•

Wrap the water supply piping with insulation to prevent con-

Fig. 10

densation from forming.

•

In areas where freezing may occur, always take steps to pre­vent the pipes from freezing.

7 REFRIGERANT PIPING WORK

〈〈〈〈For refrigerant piping of outdoor units, see the installation
manual attached to the outdoor unit.〉〉〉〉
〈〈〈〈Execute heat insulation work completely on both sides of
the gas piping and the liquid piping. Otherwise, a water
leakage can result sometimes.
Use insulation that can withstand temperatures of at least
120°C. Improve insulation of refrigerant piping according
to the installation environment. Condensation may form on
the surface of the insulation.〉〉〉〉
〈〈〈〈Before refrigerant piping work, check the type of R410A
refrigerant is used. (Proper operation is not possible if the
types of refrigerant are not the same.)〉〉〉〉

CAUTION

This product must use a new refrigerant (R410A).
Obey the following items.

•

Use a pipe cutter and flare suitable for the type of
refrigerant (R410A).

•

Apply ester oil or ether oil around the flare portions
before connectioning.

•

Only use the flare nuts included with the unit. Using
different flare nuts may cause the refrigerant to leak.

•

To prevent dust, moisuture or other foreign matter
from infiltrating the tube, either pinch the end or
cover it with tape.

•

Do not allow anything other than the designated
refrigerant to get mixed into the refrigerant circuit,
such as air, etc. If any refrigerant gas leaks while
working on the unit, ventilate the room thoroughly
right away.

•

The outdoor unit is charged with refrigerant.

•

Be sure to use both a spanner and torque wrench together,
as shown in the drawing, when connecting or disconnecting
pipes to the unit. (Refer to Fig. 11)

•

Refer to the “Tab l e 1 ” for the dimensions of flare nut spaces.

6 English

Tab l e 1

Pipe

gauge

φ 6.4

Tightening torque

14.2–17.2 N·m8.7 – 9.1

Flare dimen-

sion A (mm)

Flare shape

0

2

0

Ⳳ

2

0

Ⳳ

45

0

A

90

R0.4-0.8

φ12.7 49.5–60.3 N·m 16.2 – 16.6

•

When connecting the flare nut, coat the flare section (both
inside and outside) with ester oil or ether oil, rotate three or
four times first, then screw in. (Refer to Fig. 12)

Torque wrench

Ester oil or ether oil

Spanner

Flare nut

Piping union

Fig. 11

•

Refer to the “Tabl e 1 ” for tightening torque.

Fig. 12

CAUTION

Over-tightening may damage the flare and cause a
refrigerant leakage.

•

If a torque wrench is not available, tighten the nut in the fol­lowing manner. Once work is complete, make sure there is
no gas leaking. As the flare nut is tightened with the wrench,
the torque will suddenly increase. From that position, tighten
the nut to the angle shown on “ Tab l e 2 ”.

Tab l e 2

Pipe size Further tightening angle

Recommended arm

length of tool

φ 6.4 (1/4”) 60 to 90 degrees Approx. 150mm

φ 12.7 (1/2”) 30 to 60 degrees Approx. 250mm

•

After the work is finished, make sure to check that there is no
gas leak.

•

After checking the pipe-connection for gas leakage, be sure
to insulate the liquid and gas piping. (Refer to Fig. 13)

Gas Piping Insulation Procedure

CAUTION

Be sure to insulate any field piping all the way to the piping
connection inside the unit. Any exposed piping may cause
condensation or burns if touched.

•

Connect refrigerant piping and branching according to the
attached installation manuals that come with the outdoor unit.

Model

Gas piping

diameter

Liquid piping

diameter

VKM50GMV1, VKM50GV1
VKM80GMV1, VKM80GV1

φ 12.7 φ 6.4

VKM100GMV1, VKM100GV1

•

When brazing the refrigerant piping, perform nitrogen
replacement first, or perform the brazing (note 2) while
feeding nitrogen into the refrigerant piping (note 1), and
finally connect the indoor unit using the flare connections.

(Refer to Fig. 14)

Pressure­reducing valve

Taping

hands
valve

Nitrogen

Refrigerant piping

Part to be
brazed

Nitrogen

Fig. 14

CAUTION

•

When brazing a pipe while feeding nitrogen inside the pipe,
make sure to set the nitrogen pressure to 0.02 MPa

(0.2 kg/cm

2

) or less using the pressure reducing valve.

(This pressure is such that breeze is blown to your cheek.)

•

Do not use a flux when brazing the refrigerant pipe joints.
Use phosphor copper brazer (BCuP-2: JIS Z 3264/B­Cu93P-710/795: ISO 3677) which does not require flux.
(Using a flux containing chlorine may cause the piping to
corrode. Using a welding flux containing fluorine may
cause the refrigerant lubricant to deteriorate, and affect
adversely the refrigerant piping system.)

•

Do not use anti-oxidants or other similar agent when braz­ing the pipe joints.
Residue can clog the pipes and may cause breakdown of
parts.

Piping insulation
material
(main unit)

Attach to base

Main unit

Clamp

(accessory)

Insulation for fitting
(accessory)

Flare nut
connection

Turn seams up

Piping insulation material
(locally procured)

Mid sealing pad
(accessory)

Wrap over the
top of the flare
nut connection.

8 DUCT CONNECTION

〈〈〈〈Perform duct work keeping the following things in mind〉〉〉〉

•

Do not connect the ducts as shown in Fig. 15.

(a) Exterme bend (b) Multi bend (d) a bend right

(Do not bend the
duct over 90˚)

(c) Reduce the

diameter of the
duct to be
connected.

next to the
outlet

Liquid Piping Insulation Procedure

Insulation for fitting
(accessory)

Flare nut
connection

Turn seams up

Piping insulation
material
(Locally procured)

Fig. 15

•

The minimal radius of bends for flexible ducts are as follows.

diameter halfway.)

200-mm duct : 300 mm diameter
250-mm duct : 375 mm diameter

(Do not reduce the duct

•

To prevent air leakage, wind aluminum tape round the sec­tion after the duct connecting flange and the duct are con­nected. (Refer to Fig. 16)

•

To prevent short circuit, install the opening of the indoor air

Fig. 13

Gas pipe

Liquid
pipe

Piping insulation
material
(main unit)

Attach to base

Main unit

Clamp

(accessory)

intake as far as from the opening of the exhaust suction.

English 7

•

Use the duct applicable to the model of unit used (Refer to
the installation drawing.)

•

Install the two outdoor ducts with down slope (slope of 1/30
or more) to prevent entry of rain water. Also, provide insula­tion for three ducts (Outdoor ducts and Indoor supply air
duct) to prevent dew condensation.
(Material : Glass wool of 25 mm thick) (Refer to Fig. 16)

•

If the level of temperature and humidity inside the ceiling
is always high, install a ventilation equipment inside the
ceiling.

•

Insulate the duct and the wall electrically when a metal duct
is to be penetrated through the metal lattice and wire lattice
or metal lining of a wooden structure wall.

•

Using flexible or silent ducts can be effective in reducing the
air discharge sound of the supply air to room (SA). Select
materials keeping in mind the fan strength and operating
sound of the unit. Consult your Daikin dealer for selection.

•

Set the pitch between the exhaust air outlet (EA) and the out­side air intake (OA) to 3 times the duct diameter.

•

Do not use a bent cap or a round hood as the outdoor hood
if they might get rained on directly. (We recommend using a
deep hood (optional accessory).)

•

When using a deep hood, make sure the duct from the deep
hood (outer wall) to the unit is at least 1m long.

Outdoor duct

Slope:

Aluminum tape
(Locally procured)

Over 1/30

Make sure there

Insulation material
(Locally procured)

is no slack in the duct.

Duct connecting
flange

Aluminum tape

Fig. 16

•

The change of air discharge grill's location should be exam-

(Locally procured)

ined when the cold draft from air discharge grill is feared.
The fan is driving while defrost operation, and the cold air is
often blowing.

•

When connecting the indoor unit directly to the duct, always
use the same system on the indoor unit as with the outdoor
unit, perform group-linked operation, and make the direct
duct connection settings from the remote controller (Mode
No. “17 (27)” – FIRST CODE NO. “5” – SECOND CODE NO.
“06”) Also, do not connect to the outlet side of the indoor unit.
Depending on the fan strength and static pressure, the unit
might back up.

9 ELECTRIC WIRING WORK

•

Shut off the power before doing any work.

•

All field supplied parts and materials, electric works must
conform to local codes.

•

Use copper wire only.

•

All wiring must be performed by an authorized electrician.

•

See also the “Electrical Wiring Diagram label” attached to the
electric parts box lid when laying electrical wiring.

•

Wire the outdoor unit and remote controller as shown in the
electric wiring diagram label. See the “Remote Controller
Installation Manual” for details on how to install and lay the
wiring for the remote controller.

•

This system consists of multiple indoor units. Mark each
indoor unit as unit A, unit B..., and be sure the terminal board
wiring to the outdoor unit and BS unit are properly matched.
If wiring and piping between the outdoor unit and an indoor
unit are mismatched, the system may cause a malfunction.

•

Install a wiring interrupter or ground-fault circuit interrupter
for the power wiring.

•

Make sure the ground resistance is no greater than 100Ω .
This value can be as high as 500Ω when using a ground fault
circuit interrupter since the protective ground resistance can
be applied.

•

Do not let the ground wire should come in contact with gas
pipes, water pipes, lighting rods, or telephone ground wires.

•

Gas pipes: gas leaks can cause explosions and fire.

•

Water pipes: cannot be grounded if hard vinyl pipes are used.

•

Telephone ground and lightning rods: the ground poten­tial when struck by lightning gets extremely high.

•

Do not turn on the power supply (switch, wiring interrupter or
ground fault circuit interrupter) until all other works are done.

SPECIFICATIONS FOR FIELD SUPPLIED FUSES
AND WIRE

Power supply wiring

Model

Field

fuses

Wire Size Wire Size

VKM50GMV1,
VKM50GV1

VKM80GMV1,
VKM80GV1

15A

H05VV-

U3G

Follow

standards

VKM100GMV1,
VKM100GV1

NOTE

•

If the wiring is in a place where people it can be easily
touched by people, install a leak interrupter to prevent
electric shock.

•

When using a ground-fault circuit interrupter, make sure
to select one useful also to protection against overcurrent
and short-circuit.
If you use a leak interrupter which is designed for protect­ing again ground faults, be sure to combine it with a wir­ing interrupter or an load switch that has a fuse.

•

The length of the transmission wiring and remote control­ler wiring are as follows.

Length of outdoor-indoor transmission
wiring … max 1000m (total wiring length 2000m)

Length of remote controller wiring between indoor
unit and remote controller … max 500m

Remote controller wiring

Transmission wiring

Sheathed

local

(2 wire)

wire

0.75-1.25

2

mm

ELECTRICAL CHARACTERISTICS

Units Power supply Fan motor

220-

240V

Voltage

range

Max.

264V

Min.

198V

MCA MFA kW FLA

4.3 15

4.3 15

4.3 15

0.28×2

0.28×2

0.28×2

1.9×2

1.9×2

1.9×2

Model

Hz Volts

VKM50GMV1,
VKM50GV1

VKM80GMV1,
VKM80GV1

50

VKM50GMV1,
VKM50GV1

MCA: Min. Circuit Amps (A); MFA: Max. Fuse Amps (A)
kW: Fan Motor Rated Output (kW); FLA: Full Load Amps (A)

8 English

10 WIRING EXAMPLE AND HOW TO SET

THE REMOTE CONTROLLER

10. 1 OPENING AND SHUTTING THE ELECTRIC
PARTS BOX AND CONNECTING THE WIRING

CAUTION

Be sure to power off before opening the electric parts box.

•

Remove the electric parts box lid and wire as shown in the
figure below.

SS1 is the switch for setting
the remote controller.
The unit will not run if the settings
are changed.

Space for installation of
adapter PC board (KRP2A1)

Do not change the switch settings.

Factroy setting

X1M

A1P

A2P

X3M

A3P

NOR.
H

SS1

M

Space for
installation of
adapter PC board
(KRP50-2)

Clamp

(accessory)

Resin Clamp parts

10. 2 Connecting power supply wiring and ground
wiring

•

Pass the power supply wiring and the ground wiring through
the wiring through-hole into the electrical parts box and
secure with the included clamping material after connecting
the wires to terminal blocks. (Refer to Fig. 17-1, 17-2)

〈 VKM-GMV1 series 〉

Terminal block (X1M) details

Short-circuit wire

Remove when installing
the humidistat
(locally procured).

Fig. 17-1

〈 VKM-GV1 series 〉

Terminal block (X1M) details

1

Clamp
(accessory)

2

L

N

Grounging terminal

(M4 screws, spring
washers, cup washers)

Resin Clamp parts

Power supply wiring
Ground wiring

Wiring for the
humidistat

Grounging terminal

(M4 screws, spring
washers, cup washers)

Transmission wiring
Electric parts
box lid

• See “Electrical Wiring Diagram label” on the backside of the
lid of the electric parts box for electric wiring work.

•

Be sure to attach the sealing material or putty (locally pro­cured) to hole of wiring to prevent the infiltration of water as
well as any insects and other small creatures from outside.
Otherwise a short-circuit may occur inside the electric parts
box.

• When clamping the wires, be sure no pressure is applied to
the wire connections by using the included clamping material
to make appropriate clamps. Also, when wiring, make sure
the lid on the electric parts box fits snugly by arranging the
wires neatly and attaching the electric parts box lid firmly.
When attaching the electric parts box lid, make sure no wires
get caught in the edges. Pass wiring through the wiring
through holes to prevent damage to them.

• Make sure the remote controller wiring, the wiring between
the units, and other electrical wiring do not pass through the
same locations outside of the unit, separating them by at least
50mm, otherwise electrical noise (external static) could
cause mistaken operation or breakage.

Power supply wiring
and Ground wiring

NOTE) A3P: VKM-GMV1 series only

CAUTION

through-hole

Power wiring through-hole

L

N

Clamp

Fig. 17-2

Precautions when laying power supply wiring

〈〈〈〈

[PRECAUTIONS]

[1] A circuit breaker capable of shutting down power supply to

the entire system must be installed.

[2] A single switch can be used to supply power to units on the

same system.
However branch switches, branch overload circuit interrupter
must be selected carefully.

[3] Fit the power supply wiring of each unit with a switch and

fuse as shown in the drawing.

COMPLETE SYSTEM EXAMPLE

Power supply

(accessory)

VRV
Outdoor unit

Resin Clamp parts

Power supply wiring
Ground wiring

〉〉〉〉

Power supply wiring
Sheathed cable
(H05VV-03G)

Transmission wiring
Sheathed cable

Switch

Fuse

VRV
Indoor unit

VRV
Indoor unit

Remote controller

English 9

HRV (VKM)

HRV (VKM)

[4] Use round crimp-style terminals for connecting wires to the

power supply terminal block.
If unavailable, observe the following points when wiring.

•

Do not connect wires of different gauge to the same
power supply terminal.
(Looseness in the connection may cause overheating.)

•

Use the specified electric wire. Connect the wire securely
to the terminal. Lock the wire down without applying
excessive force to the terminal. (Tightening torque:
131N·cm ±10 %)

Attach insulation sleeve

Round crimp-style terminal

Electric wire

[5] Tightening torque for the terminal screws.

•

Use the correct screwdriver for tightening the terminal
screws. If the blade of screwdriver is too small, the head
of the screw might be damaged, and the screw will not be
properly tightened.

•

If the terminal screws are tightened too hard, screws
might be damaged.

•

Refer to the table below for the tightening torque of the
terminal screws.

Tightening torque (N·m)

Treminal block for remote controller/
Transmission wiring (X3M)

Power supply terminal block
(X1M)

Ground terminal
(M4)

0.79 – 0.97

1.18 – 1.44

1.44 – 1.94

〈〈〈〈Precautions when connecting the ground〉〉〉〉

When pulling the ground wire out, wire it so that it comes
through the cut out section of the cup washer.
(An improper ground connection may prevent a good ground
from being achieved.)

Round crimp-style terminal

Cup washer

Spring washer, flat washer

Ground screw

Cut out section

10. 3 Remote power supply wiring, transmission wir­ing, computerised control wire

•

Pass the remote control wiring, the transmission wiring,
and the computerised control wire into the electric
parts box through the through-hole and connect to the
terminals on the X3M terminal block. After connection,
secure with the included cramping material.

(Refer to Fig. 18)

Detail of terminal block (X3M)

P1 P2 F1 F2 T1 T2

REMOTE

TRANSMISSION

CONTRL

WIRING

FORCED

OFF

Clamp

(accessory)

Remote controller wiring
Transmission wiring

Fig. 18

[PRECAUTIONS]

•

Refer to the “Remote Controller Installation Manual” on how
to install and lay the wiring for the remote controller.

•

Do not, under any circumstances, connect the power wiring
to the remote controller or transmission wiring terminal block.
Doing so can destroy the entire system.

•

Connect the remote controller and transmission wiring their
respective terminal blocks.

10. 4 Wiring for the humidity regulator
(locally procured) 〈

•

Pass into the electric parts box together with the power
wire through the power wiring through-hole.

•

Remove the short-circuit wires (1 and 2) on the X1M
terminal block and connect the wiring for the humidity
regulator.

•

Secure with cramping material together with the power
wire. (Refer to Fig. 17-1)

Wiring specifications Sheathed wire (2 wire)

Size

Length MAX. 100m

External contact
specifications

〈VKM-GMV1 series only〉〉〉〉

〈 〈

0.75 - 1.25mm

2

Normally closed contact
(Current tolerance 10mA – 0.5A)

CAUTION

〈〈〈〈VKM-GMV1 series only〉〉〉〉

•

If using humidistat, install one per HRV unit.
Controlling more than one HRV unit with a single humidity
controller may prevent normal humidity operation and cause
water leakage, etc.

10. 5 WIRING EXAMPLE

•

This unit can be used as part of the combined operation sys­tem used together with indoor units (VRVII system air condi­tioners), or as a independent system for processing outside
air.

•

When connecting with a cooling free building multi type and
bringing the RA (exhaust gas intake) of this unit directly in
from the ceiling, connect to a BS unit identical to the building
multi indoor unit (master unit), and use group-linked opera­tion. (See the Engineering Data for details.)

10 English

Combined operation system with VRVII system (connected with HRV units and standard indoor units in a single

〈〈〈〈

circuit

)

〉〉〉〉

Outdoor unit

Electric parts box

IN/D OUT/D

F1 F2 F1 F2

Power supply

220-240V

~

50 Hz

Switch

Fuse

Power supply

220-240V

~

50 Hz

Switch

Fuse

Power supply

220-240V

~

50 Hz

Switch

Fuse

refrigerant

Transmission wiring

Remote controller

Remote controller wiring

Remote controller

HRV A
(outside air
processing type)

Earth

Earth

RS

P1 P2 F1 F2 T1 T2

Standard indoor
unit A

Earth

LN

P1 P2 F1 F2 T1 T2

〈〈〈〈Independent system (connected only with a HRV unit in a single refrigerant circuit)〉〉〉〉

Outdoor unit

Electric parts box

IN/D OUT/D

F1 F2 F1 F2

Power supply

220-240V

~

50 Hz

Switch

Fuse

Power supply

220-240V

~

50 Hz

Switch

Fuse

Transmission wiring

LN

P1 P2 F1 F2 T1 T2

Power supply

220-240V

~

50 Hz

Switch

Fuse

HRV B
(outside air
processing type)

Remote controller

LN

P1 P2 F1 F2 T1 T2

Earth

NOTE) Standard type ........ VAM series

〈〈〈〈When including a BS unit〉〉〉〉

HRV A
(Outside air
processing type)

Earth

Power supply

220-240V

~

50 Hz

Remote

Switch

controller

Fuse

Remote controller wiring

LN

P1 P2 F1 F2 T1 T2

HRV B
(Outside air
processing type)

Outdoor unit

Electric parts box

IN/D OUT/D

F1 F2 F1 F2

Transmission wiring

BS unit

Electric parts box

OUT/D IN/D

F1 F2 F1 F2

RS

P1 P2 F1 F2 T1 T2

Earth

LN

Earth

HRV A
(outside air
processing type)

P1 P2 F1 F2 T1 T2

HRV C
(Outside air
processing or
standard type)
NOTE)

English 11

[PRECAUTIONS]

There is not need to set the indoor unit address when using
group control. (It is automatically set when the power is turned
on. ) However, since the HRV (outside air processing type) uses
two remote control addresses per unit, the number of units
which can be group controlled is as follows.

No. of indoor air
conditioner units

No. of
HRV units

01234567891011121314

877665544332211

[PRECAUTIONS]

•

Crossover wiring is needed when using group control and
2 remote controllers at the same time.

•

Connect the indoor unit at the end of the crossover wire
(P1, P2) to remote controller 2 (slave).

Max. No. of

Indoor unit 1

Indoor unit 2

indoor units

10. 6 CONTROL BY 2 REMOTE CONTROLLERS
(Controlling 1 indoor unit by 2 remote control­lers)

•

When using 2 remote controllers, one must be set to “MAIN”
and the other to “SUB”.

MAIN / SUB CHANGEOVER

(1)

Insert a screw driver into the recess between the
upper and lower part of remote controller and, working
from the 2 positions, pry off the upper part.

(The remote controller PC board is attached to the upper
part of remote controller.)

Upper part of remote
controller

Lower part of
remote controller

Insert the screwdriver here and gently work
off the upper part of remote controller.

(2)

Turn the MAIN/SUB changeover switch on one of the
two remote controller PC boards to “S”.

(Leave the switch of the other remote controller set to “M”.)

S

(Factory setting)

S

M

Crossover wire (P1
Remote controller 1

(MAIN)

.

2)

P

Remote controller 2
(SUB)

10. 7 COMPUTERISED CONTROL
(FORCED OFF AND ON/OFF OPERATION)

•

Wire specifications and how to perform wiring
Connect the input from outside to terminals T1 and T2 of the
terminal block for remote controller.

F2 T1 T2

FORCED
OFF

Input A

Wire specification Sheathed wire (2 wire)

Gauge

0.75 - 1.25 mm

Length Max. 100 m

External terminal

•

Actuation

Contact that can ensure the minimum
applicable load of 15 V DC, 1 mA.

The following table explains FORCED OFF and ON/OFF
OPERATIONS in response to Input A.

FORCED OFF ON/OFF OPERATION

Input “ON” stops operation (impos­sible by remote controllers.)

Input OFF enables control by
remote controller.

2

Input OFF → ON turns
ON unit.

Input ON → OFF turns
OFF unit.

Only one remote controller
needs to be changed
if factory settings have

Remote controller
PC board

S

M

•

How to select FORCED OFF and ON/OFF OPERATION
Enter the FORCED OFF and ON/OFF OPERATION selection
using the local “external start/stop input” settings based on

“11 FIELD SETTING AND TEST RUN”

remained untouched.

10. 8 Central control

〈〈〈〈Wiring Method〉

〉 (See ‘‘ELECTRIC WIRING WORK’’)

〉 〉

(1) Remove the electric parts box lid.

(2) Add remote controller 2 (slave) to the terminal block for

1

remote controller (P

, P2) in the electric parts box.

(There is no polarity.)

TRANSMISSION

WIRING

FORCED

OFF

T

1P2P1F2F1T2

REMOTE
CONTRL

Remote controller wiring
terminal block

Remote
controller 1
(MAIN)

Remote
controller 2
(SUB)

12 English

If control is performed with a central device (central manage­ment controller, etc.), group number needs to be set with the
remote controller. See the manual of each central device for
detail.

10. 9 FRESH-UP OPERATION BY EXTERNAL INPUT
(HRV UNIT)

PURPOSES AND FUNCTIONS

When the operation is interlocked with the local ventilating
fan(such as the one for toilet or kitchen), the HRV unit performs
the over-supply operation to prevent inflow of the odor from out­side.
The flow rate of supply air becomes higher than that of exhaust
air.
Both the excessive supply mode(Supply Fresh-up)and the
excessive exhaust mode (Exhaust Fresh-up) are selectable.
In details, contact your dealer.

EXAMPLE OF CONTROL WIRING

Connecting line can be extended up to 50m maximum.

JC

J1 J2 F1 F2

P1P2

HRV unit

P1P2

Remote controller

•

Local wiring

Operation of
HRV unit

Terminal for local
connection

Fresh-up Short-circuit

Normal Open circuit

(Terminal for local connection)

Capacity of con­necting terminal

No-voltage nor­mally open contact
for micro-current
12V, 1mA

Note:

The connecting wiring between HRV unit and the terminal for
local connection can be extended up to 50m maximum.

(3) To make settings for individual units under group control

(when mode No. 27, 28 or 29 is selected), press the TIMER
SETTING ON/OFF button to select the “unit No.” for which
the settings are to be made. (This process is not necessary
when settings are made for the entire group.)

(4) Press the top section of the TIMER button to select the

“FIRST CODE NO.”

(5) Press the lower section of the TIMER button to select

“SECOND CODE NO.”

(6) Press the PROGRAM/CANCEL button once to enter the

settings. (The code display will stop blinking and light up.)

(7) Press the INSPECTION/TRIAL button to return to normal

mode.

UNIT No.

GROUP

11 FIELD SETTING AND TEST RUN

11. 1 Perform field settings with the remote
controller.

(1)

Make sure the electric parts box lids are closed on the
indoor and outdoor units.

(2)

Depending on the type of installation, make the field
settings from the remote controller after the power is
turned on, following the “Field Settings” manual which
came with the remote controller.

Lastly, make sure the customer keeps the “Field Settings”
manual, along with the operating manual, in a safe place.

SECOND
CODE NO.

FIRST
CODE
NO.

11. 1. 1

Field setting

SETTING

Using the remote controller of the VRV-system air
conditioner to make HRV unit settings

〈〈〈〈Initial setting〉〉〉〉

•

“Mode No.” 17,18 and 19: Group control of HRV units.

•

“Mode No.” 27, 28 and 29: individual control

〈〈〈〈Operating procedure〉〉〉〉
The following describes the operating procedure and
settings.

(1) Press the INSPECTION/TRIAL button for more than four

seconds with the unit in the normal mode to enter the local
setting mode.

(2) Use the TEMPERATURE ADJUSTMENT button to select

the desired “Mode No.” (The code display will blink.)

Mode No.

FIELD
SET MODE

2

6

〈〈〈〈Example〉〉〉〉

When adjusting the ventilation air flow to low setting in the
group setting mode, enter the Mode No., “19” FIRST CODE
NO., “0” and SECOND CODE NO., “01”.

English 13

■■■■Settings and setting numbers

Mode

FIRST

No.

∗

1

17

(27)

17

(27)

12

(22)

12

(22)

15

(25)

18

(28)

19

(29)

1A

43
45

CORD

01 02 03 04 05 06 07

NO

.

App-

rox.

0

2500

hours

1

OFF2 hours

Nor-

4

mal
Not

direct

duct

(Air

5

flow

set-

ting)

Air

flow

5

set­ting

High

6

For-

ced

1

off

No

equ-

5

ipp-

ed

1

No Yes

Indi-

4

cat­ion

No

Indication

7

Supply Exhaust Supply Exhaust

Fresh- upOverall

8

Fan

9

on/off

0

LowLowLowLow

Auto-

2

matic

Off On

Description of setting

Filter cleaning time
setting
NOTE) 5

Nighttime free cooling
operation setting
(Time after air condi­tioning is stopped.)
NOTE) 5

Fan speed initial
setting

Direct duct connec­tion with VRV
setting

Setting for cold areas
(Fan operation selec­tion for heater thermo
OFF) NOTE) 6

Ventilation air flow
setting when
Nighttime free cooling
setting

ON/OFF input from
Outside
(Set when ON/OFF is
to be controlled from
outside)

Power faillure
automatic reset
(Auto Restart)

Humidification on/off
when heating thermo
is off

Indication of
ventilation mode/Not
indication

Fresh up air supply/
exhaust setting

External input termi­nal function selection
(between J1 and JC)
NOTE) 7

KRP50-2 output
switching selection
(between 1 and 3)

Ventilation air flow
setting

Ventilation mode
setting

Fresh-up operation
Forced fan on
Unit no. allocation

SECOND CORD NO.

App-

No

rox.

1250

hours

later

Ultra

high

With

direct

duct

(fan

off)

Air
flow
set­ting

Ult-

ra-

High

ON/
OFF
con-

trol

Equ-

ipp-

ed

No
Indi­cat-

ion

alarm

Abno-

rmal

Ex-

change

––––

coun-

ting

4

6

hours

hours

hours

later

later

later

–––––

Not

direct

duct

(Air

–

flow
set-

ting)

Fan

–

L

–––––

–––––

–––––

–––––

–––––

Indication

–––

–––––

High High

By-

pass

–––––

8

––

With
direct
duct

–

–

–––

(fan

off)

Fan

L

Air flow

incre-

ase

–

–

–

NOTE)

1. The inside the frame indicates the second code no.
set when shipped from factory.

2. The settings are applied to the entire group, but if the mode
no. inside the parentheses is selected, the settings can be
applied to individual indoor units.
However, it is only possible to check any changes made to
the settings inside the parentheses in individual mode. (For
group batch operation, the changes are made but the dis­play remains as it was when shipped from the factory.)

3. Do not set anything not shown above. If the applicable func­tions are not available, they will not be displayed.

4. When returning to normal mode, the remote controller is ini­tialized, so the display might show “88.”

5. When “Filter cleaning time setting” or “Nighttime free cooling
operation setting” is changed, explain set contents to the
customer.

6. See below for details on the settings for cold areas.
– : operate at the set fan strength

Air conditioner fan
Heating thermo off Operation
Defrost Stop
Oil return Stop

In case of Independent operation

Air conditioner fan
Heating thermo off Operation
Defrost Stop
Oil return Stop

– : operate at the set fan strength
L : operate at the weak fan strength

: Stop

S

Defrost operation

•

In heating operation, freezing of the outdoor unit’s coil
increases.
Heating capability decreases and the system goes into
defrost operation.

•

The remote controller will read “” until the hot air starts
blowing.

•

It returns to the heating operation again after 6 to 8 minutes
(10 at the longest).

•

During defrost operation, the fans of the unit continues driv­ing (factory setting).
The purpose of this is to maintain the amount of ventilation
and humidifying.

•

The change of air discharge grill’s location should be exam­ined when the cold draft from air discharge grill is feared.

•

Though the fan can be stopped by the setting of remote
controller.
Do not stop the fan in the place where no ventilation by stop­ping the fan may cause the influence of diffusion of air which
it is dirty and moisture into another room, or the inflow from
outside the room.
(outflow such as viruses from the sickroom, or smell leakage
from the rest room, etc.)

7. See below for details on the external input terminal function.

SECOND
CODE
NO.

∗SECOND CODE NO. “04” does not function when in air condi-

tioner linked mode.

01

02

06

Input
contact

a

a

a

Fan
operation

Operation On Fresh-up operation

Operation On

Operation On

Operation
lamp

01 02 04 06

––
–

Stop Stop Stop

–

Stop Stop Stop

01 02 04 06

––
––
––

Malfunction code “60”
is displayed

Fan strength up (Low to High,
High to Ultra-High)

LL

LL
Stop Stop
Stop Stop

14 English

11. 2 Perform a test run according to the outdoor
unit’s installation manual.

(1) Make sure the electric parts box of the unit is closed

before turning on power.

(2) Make a test run following the operation manual of the

outdoor unit.

•

The operation lamp of the remote controller will flash
when an malfunction occurs. Check the malfunction code
on the liquid crystal display to identify the point of trouble.
An explanation of malfunction codes and the correspond­ing trouble is provided in “CAUTION FOR SERVICING” of
the outdoor unit.
If the display shows any of the following, there is a possi­bility that the wiring was done incorrectly or that the
power is not on, so check again.

Remote controller display

“” is display

“” is display

“” is display

“” is display

“” is display

No display

• There is a short circuit at the FORCED
OFF terminals (T1, T2)

• The test-run has not be performed.

• The power on the outdoor unit is off.

• The outdoor unit has not been wired for

power supply.

• Incorrect wiring for the transmission
wiring and the wiring 〈the remote con­troller wiring or FORCED OFF wiring.〉

• The transmission wiring is cut.

•“MAIN/SUB” setting of the remote

controller is wrong.

• The power on the indoor unit and HRV
is off.

• The indoor unit and HRV has not been
wired for power supply.

• Incorrect wiring for the remote control­ler wiring and the wiring 〈the transmis­sion wiring or the FORCED OFF
wiring.〉

• The remote controller wiring is cut.

Content

11. 3 Next, run the humidifier.

〈〈〈〈VKM-GMV1 series only〉〉〉〉

Check that the water supply piping is connected securely.

(1)
(2) Open the water supply shut-off valve. (No water will be

supplied at this time.)

(3) Run the HRV unit in heating mode.

(See the operating manual included with the indoor unit
for details on how to run the unit in heating mode.)
The water supply will start and the humidifier will begin
operation.

(4) After starting heating (humidifying), the sound of the

water supply solenoid valve will be heard every
3 or 4 minutes (a clicking sound), so listening for that
clicking sound let the unit run for 30 minutes to make
sure that humidifying operation is normal.

CAUTION

•

If carpentry work is not completed when a test run is fin­ished, tell the customer not to run the humidifier for the pro­tection of indoor unit and HRV until it is completed.

•

If the humidifier is run, paint, particles generated from
adhesive and other materials used for carpentry work may
cause HRV to get dirty, causing splash or leakage of water.

English 15

12 WIRING DIAGRAM

Note) 7

Note) 7

Note) 9

WIRING DIAGRAM

~

50Hz

220-240V

POWER SUPPLY

Note) 3

TO CONNECTION WIRING AND

CENTRAL REMOTE

Note) 6

INPUT FROM OUTSIDE

Note) 8

Note) 5

INPUT

FROM

OUTSIDE

CONTACT

CAPACITY

EXTERNAL OUTPUT

TERMINALS

Note) 4

ADAPTER PC BOARD FOR WIRING

(OPTIONAL ACCESSORIES)

CONTROLLER UNIT

WIRED REMOTE CONTROLLER

(OPTIONAL ACCESSORIES)

VKM50·80·100GMV13D047684-1

: SHORT CIRCUIT CONNECTOR

,

CONTROL BOX

TERMINAL BLOCK

(POWER SUPPLY)

TERMINAL BLOCK

(CONTROL)(A3P)

TERMINAL BLOCK

(CONTROL)(A1P)

TERMINAL BLOCK

(CONTROL)

X1M

PRINTED CIRCUIT BOARD

PRINTED CIRCUIT BOARD

X2M

X1M,X2M

PRINTED CIRCUIT BOARD

(ADAPTOR FOR WIRING)

X3M

CAPACITOR (M1F, M2F)

FUSE ( B , 10A, 250V)(A1P)

FUSE ( B , 5A, 250V)(A2P)

FUSE ( B , 5A, 250V)(A3P)

CONNECTOR

(RELAYING WIRE)

CONNECTOR

(RELAYING WIRE)

ELECTRONIC EXPANSION

VALVE

FEED WATER SOLENOID

VALVE

Y1E

X17A,X19A

X20A

THERMO SWITCH

(152˚C)(M1F, M2F BUILT-IN)

LIGHT EMITTING DIODE

Y2S

(SERVICE MONITOR-GREEN)(A1P)

LIGHT EMITTING DIODE

(SERVICE MONITOR-GREEN)(A2P)

MAGNETIC RELAY (M1F)(A1P)

MAGNETIC RELAY (M2F)(A1P)

: TERMINAL BLOCK, : TERMINAL, : CONNECTOR,

Notes)

(KRP50-2)

SELECTOR SWITCH

(MAIN/SUB)

OPTIONAL ACCESSORIES

WIRED REMOTE CONTROLLER

ADAPTOR PC BOARD FOR WIRING

SS1

MAGNETIC RELAY (M1D)(A1P)

MAGNETIC RELAY (S1L)

MAGNETIC RELAY (A3P)

MAGNETIC RELAY (A3P)

MOTOR (DAMPER MOTOR)

MOTOR (SUPPLY AIR FAN)

(FOR HUMIDIFIER OPERATION)

MAGNETIC RELAY

(OPERATION/STOP)

MAGNETIC RELAY

Ry1

Ry2

MOTOR (EXHAUST AIR FAN)

THERMISTOR (INDOOR AIR)

THERMISTOR (OUTDOOR AIR)

THERMISTOR

REMOTE CONTROLLER, IN DETAILS, REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT.

SELECTED BY REMOTE CONTROLLER, IN DETAILS, REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT.

AND (2) AS SHOWN IN THE FIGURE RIGHT.

REMOVED.

INSTRUCTION MANUAL.

MANUAL.

3. IN CASE USING CENTRAL REMOTE CONTROLLER, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED

1.

2. : FIELD WIRING

4. IN CASE USING WIRING ADAPTER, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION

5. WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE, FRESH UP CONTROL OPERATION CAN BE SELECTED BY

6. WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE, FORCED OFF OR ON/OFF CONTROL OPERATION CAN BE

7. IN CASE INSTALLING A HUMIDISTAT S1H (LOCALLY PROCURED), REMOVE THE SHORT CIRCUIT WIRING BETWEEN (1)

OPTIONAL PARTS

CONNECTOR FOR

CONNECTOR

(ADAPTER POWER

SUPPLY)(A1P)

CONNECTOR

(WIRING ADAPTER FOR

TERMINAL BLOCK

(FOR EXTERNAL OUTPUT)

Tes10

(INLET AIR INTO COIL)

X11A

THERMISTOR

(LIQUID/GAS PIPE OF COIL)

FLOAT SWITCH (HUMIDIFIER)

LIMIT SWITCH

(DAMPER MOTOR)

SELECTOR SWITCH

ELECTRICAL APPENDICES)(A2P)

LOCAL SUPPLIED PARTS

X18A

(FOR ESPECIALLY USE )(A1P)

SELECTOR SWITCH

(HUMIDISTAT INPUT )(A3P)

TRANSFORMER

ARE CHANGED.

8. DO NOT REMOVE THE SHORT CIRCUIT CONNECTORS OF X8A AND X9A, THE UNIT WILL NOT RUN IF THEY ARE

9. SS1 (A3P) HAS ALREADY BEEN SET TO OFF AT FACTORY SET. HUMIDIFYING BECOMES IMPOSSIBLE, IF THE SETTING

HUMIDISTAT

S1H

(220-240V/22V)

TRANSFORMER

(220-240V/22V)

BLK: BLACK RED: RED GRN: GREEN)

CHANGED.

10. SS1(A1P) HAS ALREADY BEEN SET TO “NOR.” AT FACTORY SET. THE UNIT WILL NOT RUN IF THE SETTING ARE

11. SYMBOLS SHOW AS FOLLOWS. (PNK: PINK WHT: WHITE YLW: YELLOW ORG: ORANGE BLU:BLUE

12. USE COPPER CONDUCTORS ONLY.

A1P

A2P

A3P

C1·C2

F1U

F1U

F1U,F2U

R1T

R2T

K7R

HAP

HAP

F2UT

F1UT·

K1R~K3R

K8R

K4R~K6R

M1D

KHR,KHuR

KCR,KFR

M1F

M2F

R3T

S1L

R4T,R5T

S1Q

SS1

SS1

T1R

T2R

16 English

Note) 3

TO CONNECTION WIRING AND

CENTRAL REMOTE

CONTROLLER UNIT

Note) 6

INPUT FROM OUTSIDE

WIRED REMOTE CONTROLLER

(OPTIONAL ACCESSORIES)

VKM50·80·100GV13D048372-1

WIRING DIAGRAM

POWER SUPPLY

~

50Hz

220-240V

Note) 7

Note) 5

INPUT

FROM

OUTSIDE

CONTACT

CAPACITY

EXTERNAL OUTPUT

TERMINALS

Note) 4

ADAPTER PC BOARD FOR WIRING

(OPTIONAL ACCESSORIES)

Note) 8

: SHORT CIRCUIT CONNECTOR

,

CONTROL BOX

: TERMINAL BLOCK, : TERMINAL, : CONNECTOR,

1.

Notes)

MANUAL.

REMOTE CONTROLLER, IN DETAILS, REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT.

SELECTED BY REMOTE CONTROLLER, IN DETAILS, REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT.

REMOVED.

CHANGED.

INSTRUCTION MANUAL.

2. : FIELD WIRING

3. IN CASE USING CENTRAL REMOTE CONTROLLER, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED

4. IN CASE USING WIRING ADAPTER, CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION

5. WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE, FRESH UP CONTROL OPERATION CAN BE SELECTED BY

6. WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE, FORCED OFF OR ON/OFF CONTROL OPERATION CAN BE

7. DO NOT REMOVE THE SHORT CIRCUIT CONNECTORS OF X8A AND X9A, THE UNIT WILL NOT RUN IF THEY ARE

BLK: BLACK RED: RED GRN: GREEN)

8. SS1(A1P) HAS ALREADY BEEN SET TO “NOR.” AT FACTORY SET. THE UNIT WILL NOT RUN IF THE SETTING ARE

9. SYMBOLS SHOW AS FOLLOWS. (PNK: PINK WHT: WHITE YLW: YELLOW ORG: ORANGE BLU:BLUE

10. USE COPPER CONDUCTORS ONLY.

(KRP50-2)

OPTIONAL PARTS

TERMINAL BLOCK

(POWER SUPPLY)

TERMINAL BLOCK

(CONTROL)(A1P)

TERMINAL BLOCK

(CONTROL)

CONNECTOR

(RELAYING WIRE)

CONNECTOR

X1M

X2M

X3M

X17A,X19A

PRINTED CIRCUIT BOARD

PRINTED CIRCUIT BOARD

CAPACITOR (M1F, M2F)

FUSE ( B , 10A, 250V)(A1P)

FUSE ( B , 5A, 250V)(A2P)

F1U

C1·C2

F1U

F1UT·

A1P

A2P

(SERVICE MONITOR-GREEN)(A1P)

THERMO SWITCH

(152˚C)(M1F, M2F BUILT-IN)

LIGHT EMITTING DIODE

HAP

F2UT

SELECTOR SWITCH

(RELAYING WIRE)

ELECTRONIC EXPANSION

VALVE

Y1E

X20A

LIGHT EMITTING DIODE

(SERVICE MONITOR-GREEN)(A2P)

MAGNETIC RELAY (M1F)(A1P)

HAP

K1R~K3R

(MAIN/SUB)

OPTIONAL ACCESSORIES

WIRED REMOTE CONTROLLER

ADAPTOR PC BOARD FOR WIRING

SS1

MAGNETIC RELAY (M2F)(A1P)

MAGNETIC RELAY (M1D)(A1P)

MOTOR (DAMPER MOTOR)

MOTOR (SUPPLY AIR FAN)

MOTOR (EXHAUST AIR FAN)

K7R

M1F

M2F

M1D

K4R~K6R

MAGNETIC RELAY

(OPERATION/STOP)

MAGNETIC RELAY

Ry1

Ry2

THERMISTOR (INDOOR AIR)

THERMISTOR (OUTDOOR AIR)

THERMISTOR

(INLET AIR INTO COIL)

THERMISTOR

R1T

R2T

R3T

R4T,R5T

CONNECTOR FOR

CONNECTOR

(ADAPTER POWER

SUPPLY)(A1P)

CONNECTOR

(FOR HUMIDIFIER OPERATION)

TERMINAL BLOCK

(FOR EXTERNAL OUTPUT)

Tes10

(LIQUID/GAS PIPE OF COIL)

LIMIT SWITCH

S1Q

X11A

(DAMPER MOTOR)

SELECTOR SWITCH

(FOR ESPECIALLY USE)(A1P)

SS1

(WIRING ADAPTER FOR

X18A

TRANSFORMER

(220-240V/22V)

TRANSFORMER

(220-240V/22V)

T1R

T2R

ELECTRICAL APPENDICES)(A2P)

English 17

3P130768-1B

EM03A096A

(0504)

FS HT