Daikin VKM50GAV1, VKM50GAMV1, VKM80GAMV1, VKM100GAMV1, VKM80GAV1 Service Manual
...
Si71 - 812
Heat Reclaim Ventilation
- with DX coil -
[Applied Models]
VKM 50GAV1
VKM 80GAV1
VKM 100GAV1
VKM 50GAMV1
VKM 80GAMV1
VKM 100GAMV1
Si71-812
Heat Reclaim Ventilation
- with DX coil -
VKM 50GAV1
VKM 80GAV1
VKM 100GAV1
VKM 50GAMV1
VKM 80GAMV1
VKM100GAMV1
1. Introduction ............................................................................................iv
1.1 Safety Cautions ....................................................................................... iv
Part 1 General Constructions .......................................................1
1. General Information ................................................................................2
1.1 Features ...................................................................................................2
Part 2 Product Specification ........................................................ 5
1. Product Specification ..............................................................................6
1.1 With DX-coil & Humidifier .........................................................................6
1.2 With DX-coil .............................................................................................8
1.3 Humidifier ...............................................................................................10
Part 3 Operation .......................................................................... 11
1. Operation ..............................................................................................12
1.1 Explanation for Systems.........................................................................12
1.2 Features of VKM-GA(M).........................................................................15
1.3 Central Control System ..........................................................................17
1.4 Restrictions to Control System ...............................................................18
1.5 Operation................................................................................................20
Part 4 Maintenance ..................................................................... 35
1. Maintenance..........................................................................................36
1.1 Maintenance for the Air Filter .................................................................36
1.2 Maintenance for the Heat Exchange Element........................................38
2. Inspection and Maintenance of the Humidifier ......................................39
2.1 For VKM-GAMV1 Series ........................................................................39
2.2 Replacing the Humidifier Element ..........................................................43
Table of Contents i
Si71-812
Part 5 Control Functions ............................................................. 45
1. Control Functions ..................................................................................46
1.1 Explanation of individual Functions ........................................................46
1.2 Layout of Switches on Printed Circuit Board ..........................................52
Part 6 Troubleshooting ............................................................... 53
1. Troubleshooting by Remote Controller .................................................54
1.1 The INSPECTION / TEST Button...........................................................54
1.2 Self-diagnosis by Wired Remote Controller ...........................................55
2. Troubleshooting ....................................................................................56
2.1 Error Code Indication .............................................................................56
2.2 Operation of the Remote Controller’s Inspection /
Test Operation Button ............................................................................57
2.3 Indoor Air Thermistor Error.....................................................................58
2.4 Outdoor Air Thermistor Error..................................................................59
2.5 Damper System Error (Alarm)................................................................60
2.6 Damper System Error (Alarm)................................................................61
2.7 “A1” Indoor Unit: PC Board Defect..........................................................62
2.8 “A9” Indoor Unit: Malfunction of Moving Part of
Electronic Expansion Valve (20E) ..........................................................63
2.9 “C4” Indoor Unit: Malfunction of Thermistor (R4T) for
Heat Exchanger......................................................................................64
2.10 “C5” Indoor Unit: Malfunction of Thermistor (R5T) for Gas Pipes ...........65
2.11 “C9” Indoor Unit: Malfunction of Thermistor (R3T) for Suction Air...........66
2.12 “U3” Check Operation not Executed........................................................67
2.13 Dedicated LCD Remote Controller .........................................................68
2.14 Data Transmission Error (between LCD Remote Controller and
Main Unit) ...............................................................................................69
2.15 “U5” Malfunction of Transmission between Remote Controller and
Indoor Unit..............................................................................................70
2.16 “U8” Malfunction of Transmission between Master and
Slave Remote Controllers ......................................................................71
2.17 “UA” Excessive Number of Indoor Units ..................................................72
2.18 “UC” Address Duplication of Central Remote Controller ..........................73
2.19 “UE” Malfunction of Transmission between
Central Remote Controller and Indoor Unit............................................74
2.20 “UE” Malfunction of Transmission between
Central Remote Controller and Indoor Unit............................................76
2.21 Main Unit PC Board Assembly ...............................................................77
2.22 Thermistor ..............................................................................................78
2.23 Power Transformer.................................................................................80
2.24 Damper Motor ........................................................................................81
Part 7 Field Setting ..................................................................... 83
1. Field Setting ..........................................................................................84
1.1 Field Setting and Test Run.....................................................................84
ii Table of Contents
Si71-812
Part 8 Appendix........................................................................... 89
1. Appendix ...............................................................................................90
1.1 Wiring Diagram.......................................................................................90
1.2 List of Electrical and Functional Parts ....................................................92
2. Piping Diagram......................................................................................93
Index ............................................................................................. i
Drawings & Flow Charts ...............................................................iii
Table of Contents iii
Introduction Si71-812
1. Introduction
1.1 Safety Cautions
Cautions and
Warnings
Be sure to read the following safety cautions before conducting repair work.
The caution items are classified into “ Warning” and “ Caution”. The “ Warning”
items are especially important since they can lead to death or serious injury if they are not
followed closely. The “ Caution” items can also lead to serious accidents under some
conditions if they are not followed. Therefore, be sure to observe all the safety caution items
described below.
About the pictograms
This symbol indicates an item for which caution must be exercised.
The pictogram shows the item to which attention must be paid.
This symbol indicates a prohibited action.
The prohibited item or action is shown inside or near the symbol.
This symbol indicates an action that must be taken, or an instruction.
The instruction is shown inside or near the symbol.
After the repair work is complete, be sure to conduct a test operation to ensure that the
equipment operates normally, and explain the cautions for operating the product to the
customer
1.1.1 Caution in Repair
Be sure to cut off the power before disassembling the equipment for a repair.
Working on the equipment that is connected to a power supply can cause an
electrical shook.
If it is necessary to supply power to the equipment to conduct the repair or
inspecting the circuits, do not touch any electrically charged sections of the
equipment.
If the refrigerant gas discharges during the repair work, do not touch the
discharging refrigerant gas.
The refrigerant gas can cause frostbite.
Warning
When disconnecting the suction or discharge pipe of the compressor at the
welded section, release the refrigerant gas completely at a well-ventilated
place first.
If there is a gas remaining inside the compressor, the refrigerant gas or
refrigerating machine oil discharges when the pipe is disconnected, and it can
cause injury.
If the refrigerant gas leaks during the repair work, ventilate the area. The
refrigerant gas can generate toxic gases when it contacts flames.
The step-up capacitor supplies high-voltage electricity to the electrical
components of the outdoor unit.
Be sure to discharge the capacitor completely before conducting repair work.
A charged capacitor can cause an electrical shock.
Do not start or stop the air conditioner operation by plugging or unplugging the
power cable plug.
Plugging or unplugging the power cable plug to operate the equipment can
cause an electrical shock or fire.
iv
Si71-812 Introduction
Caution
Do not repair the electrical components with wet hands.
Working on the equipment with wet hands can cause an electrical shock.
Do not clean the air conditioner by splashing water.
Washing the unit with water can cause an electrical shock.
Be sure to provide the grounding when repairing the equipment in a humid or
wet place, to avoid electrical shocks.
Be sure to turn off the power switch and unplug the power cable when cleaning
the equipment.
The internal fan rotates at a high speed, and cause injury.
Do not tilt the unit when removing it.
The water inside the unit can spill and wet the furniture and floor.
Be sure to check that the refrigerating cycle section has cooled down
sufficiently before conducting repair work.
Working on the unit when the refrigerating cycle section is hot can cause burns.
Use the welder in a well-ventilated place.
Using the welder in an enclosed room can cause oxygen deficiency.
1.1.2 Cautions Regarding Products after Repair
Warning
Be sure to use parts listed in the service parts list of the applicable model and
appropriate tools to conduct repair work. Never attempt to modify the
equipment.
The use of inappropriate parts or tools can cause an electrical shock,
excessive heat generation or fire.
When relocating the equipment, make sure that the new installation site has
sufficient strength to withstand the weight of the equipment.
If the installation site does not have sufficient strength and if the installation
work is not conducted securely, the equipment can fall and cause injury.
Be sure to install the product correctly by using the provided standard
installation frame.
Incorrect use of the installation frame and improper installation can cause the
equipment to fall, resulting in injury.
Be sure to install the product securely in the installation frame mounted on a
window frame.
If the unit is not securely mounted, it can fall and cause injury.
Be sure to use an exclusive power circuit for the equipment, and follow the
technical standards related to the electrical equipment, the internal wiring
regulations and the instruction manual for installation when conducting
electrical work.
Insufficient power circuit capacity and improper electrical work can cause an
electrical shock or fire.
For integral units
only
For integral units
only
v
Introduction Si71-812
Warning
Be sure to use the specified cable to connect between the indoor and outdoor
units. Make the connections securely and route the cable properly so that there
is no force pulling the cable at the connection terminals.
Improper connections can cause excessive heat generation or fire.
When connecting the cable between the indoor and outdoor units, make sure
that the terminal cover does not lift off or dismount because of the cable.
If the cover is not mounted properly, the terminal connection section can cause
an electrical shock, excessive heat generation or fire.
Do not damage or modify the power cable.
Damaged or modified power cable can cause an electrical shock or fire.
Placing heavy items on the power cable, and heating or pulling the power cable
can damage the cable.
Do not mix air or gas other than the specified refrigerant (R-410A) in the
refrigerant system.
If air enters the refrigerating system, an excessively high pressure results,
causing equipment damage and injury.
If the refrigerant gas leaks, be sure to locate the leak and repair it before
charging the refrigerant. After charging refrigerant, make sure that there is no
refrigerant leak.
If the leak cannot be located and the repair work must be stopped, be sure to
perform pump-down and close the service valve, to prevent the refrigerant gas
from leaking into the room. The refrigerant gas itself is harmless, but it can
generate toxic gases when it contacts flames, such as fan and other heaters,
stoves and ranges.
When replacing the coin battery in the remote controller, be sure to disposed
of the old battery to prevent children from swallowing it.
If a child swallows the coin battery, see a doctor immediately.
Installation of a leakage breaker is necessary in some cases depending on the
conditions of the installation site, to prevent electrical shocks.
Do not install the equipment in a place where there is a possibility of
combustible gas leaks.
If a combustible gas leaks and remains around the unit, it can cause a fire.
Be sure to install the packing and seal on the installation frame properly.
If the packing and seal are not installed properly, water can enter the room and
wet the furniture and floor.
1.1.3 Inspection after Repair
Check to make sure that the power cable plug is not dirty or loose, then insert
the plug into a power outlet all the way.
If the plug has dust or loose connection, it can cause an electrical shock or fire.
If the power cable and lead wires have scratches or deteriorated, be sure to
replace them.
Damaged cable and wires can cause an electrical shock, excessive heat
generation or fire.
Caution
For integral units
only
Warning
Do not use a joined power cable or extension cable, or share the same power
outlet with other electrical appliances, since it can cause an electrical shock,
excessive heat generation or fire.
vi
Si71-812 Introduction
Caution
Check to see if the parts and wires are mounted and connected properly, and
if the connections at the soldered or crimped terminals are secure.
Improper installation and connections can cause excessive heat generation,
fire or an electrical shock.
If the installation platform or frame has corroded, replace it.
Corroded installation platform or frame can cause the unit to fall, resulting in
injury.
Check the grounding, and repair it if the equipment is not properly grounded.
Improper grounding can cause an electrical shock.
Be sure to measure the insulation resistance after the repair, and make sure
that the resistance is 1 Mohm or higher.
Faulty insulation can cause an electrical shock.
Be sure to check the drainage of the indoor unit after the repair.
Faulty drainage can cause the water to enter the room and wet the furniture
and floor.
1.1.4 Using Icons
Icons are used to attract the attention of the reader to specific information. The meaning of each
icon is described in the table below:
1.1.5 Using Icons List
Icon Type of
Note:
Caution
Warning
Information
Description
Note A “note” provides information that is not indispensable, but may
nevertheless be valuable to the reader, such as tips and tricks.
Caution A “caution” is used when there is danger that the reader, through
incorrect manipulation, may damage equipment, loose data, get
an unexpected result or has to restart (part of) a procedure.
Warning A “warning” is used when there is danger of personal injury.
Reference A “reference” guides the reader to other places in this binder or
in this manual, where he/she will find additional information on a
specific topic.
vii
Introduction Si71-812
viii
Si71-812
Part 1
General Constructions
1. General Information ................................................................................2
1.1 Features ...................................................................................................2
General Constructions 1
General Information Si71-812
1. General Information
1.1 Features
1.1.1 External Appearance
VKM50GAMV1
VKM50GAV1
VKM80GAMV1
VKM100GAMV1
VKM80GAV1
VKM100GAV1
1.1.2 Model Series
Type 500 800 1000
DX-Coil and Humidifier VKM50GAMV1 VKM80GAMV1 VKM100GAMV1
DX-Coil VKM50GAV1 VKM80GAV1 VKM100GAV1
These units are applied only for CE regulation.
2 General Constructions
Si71-812 General Information
1.1.3 Nomenclature
V K M 50 GA M V1
Ventilation
Outdoor Air Treatment Type
Mounted Type
Nominal Air Flow Rate
50 : 500m3/h, 80 : 750m3/h, 100 : 950m3/h
Major Design Category
1.1.4 Structures
Moisture
Power Supply
V1 : 1 Phase : 220-240V, 50Hz
(M : With Humidifier Elements, nothing : without Humidifier Elements)
General Constructions 3
General Information Si71-812
1.1.5 Optional Accessories
Installation of Optional Accessories (For VKM50GA (GAM) V1, VKM80GA (GAM) V1, VKM100GA (GAM) V1)
Air suction/discharge grille (Option)
Flexible duct
RA
SA
(Option)
High efficient filter
(Option)
SA
Optional Accessories
Member
Remote controller
Centralized
controlling
device
Wiring adaptor for electrical
appendices
For ON signal output
For heater control kit
For wiring
Controlling device
PC Board Adaptor
Installation box for adaptor PCB
Note: 1.
Installation box is necessary for each adaptor marked .
2.
Up to 2 adaptors can be fixed for each installation box.
3.
Only one installation box can be installed for each indoor unit.
4.
Up to 2 installation boxes can be installed for each indoor unit.
Member
Silencer
Air suction/
Discharge grille
High efficiency filter
Additional function
Air filter for replacement *
Flexible duct (1 m)
Flexible duct (2 m)
Drawing No.
* Including 2 sheets per unit.
Applicable model
Central remote controller
Unified ON/OFF controller
Schedule timer
Type
(indoor unit of VRV)
Applicable model
Nominal pipe diameter (mm)
Nominal pipe diameter (mm)
White
Branch duct
(Field supply)
Duct
Silencer (Option)
(Field supply)
Thermal insulation material (Field supply)
VKM50/80/100GA(GAM)V1
BRC1A62
*1
BRC1D527 (EU only) Note. 8
DCS302CA61
DCS301BA61
DST301BA61
KRP2A61
KRP50-2
BRP4A50
FXCQ-M FXFQ-M FXZQ-M FXKQ-MA FXSQ-M FXMQ-MA FXHQ-MA FXAQ-MA
KRP1B57 KRP1B61 KRP1B3
Notes 2, 3
KRP1B96
Notes 2, 3
KRP1D98
Notes 4, 6
KRP1B101
5.
6.
7.
8.
—
Installation box is necessary for second adaptor.
Installation box is necessary for each adaptor.
*1 Necessary when operating HRV (VKM) independently. When operating interlocked with
other air conditioners, use the remote controllers of the air conditioners.
BRC1D527 is recommended in Europe. It has the substantial function from BRC1A62.
Note 5
KRP4A91
Note 3
KRP1C93
VKM50GA(GAM)V1 VKM80GA(GAM)V1 VKM100GA(GAM)V1
—
—
K-DGL200B
200 250
KAF241G80M KAF241G100M
KAF242G80M KAF242G100M
K-FDS201C K-FDS251C
K-FDS202C K-FDS252C
C: 3D051318
—
Notes 2, 3
KRP4A93
KDDM24B100
250 mm
K-DGL250B
Round hood
(Field supply)
OA
FXDQ-P
FXDQ-N(A)
KRP1B56 KRP1B61 KRP1B59
Notes 4, 6
KRP1B101
EA
FXLQ-MA
FXNQ-MA
KRP1B61
——
FXUQ-MA
—
KRP1B97
Remote Controller Centralized controller Schedule timerUnified ON/OFF controller
Silencer
Air suction/discharge grille
(Noise suppression type)
Flexible duct
(Noise suppression type)
4 General Constructions
Si71-812
Part 2
Product Specification
1. Product Specification ..............................................................................6
1.1 With DX-coil & Humidifier .........................................................................6
1.2 With DX-coil .............................................................................................8
1.3 Humidifier ...............................................................................................10
Product Specification 5
Product Specification Si71-812
1. Product Specification
1.1 With DX-coil & Humidifier
Type VKM50GAMV1 VKM80GAMV1 VKM100GAMV1
Refrigerant R410A
Power Supply 220-240V, 1ph., 50Hz
Ultra-high
Air Flow Rate &
Static Pressure
(Note 7)
Normal Amp.
(Note 8)
Normal Input
Fan Type Sirocco Fan
Motor Output kW 0.280×2 0.280×2 0.280×2
Sound Level
(Note 5)
(220/230/240V)
Humidifier
Temp. Exchange
Efficiency
Enthalpy Exchange
Efficiency (Cooling)
Enthalpy Exchange
Efficiency (Heating)
Casing Galvanized Steel Plate
Insulating Material Self-Extinguishable Urethane Foam
Heat Exchanging System Air to Air Cross Flow Total Heat (Sensible + Latent Heat) Exchange
Heat Exchanger Element Specially Processed Nonflammable Paper
Air Filter Multidirectional Fibrous Fleeces
Coil (Cross Fin Coil)
Cooling Capacity (Note 2) (kW) 4.71 (1.91) 7.46 (2.96) 9.12 (3.52)
Heating Capacity (Note 3) (kW) 5.58 (2.38) 8.79 (3.79) 10.69 (4.39)
Dimensions Height
Connection Duct Diameter (mm)
Piping Connection
Refrigerant Control Electronic Expansion Valve
Connectable Outdoor Unit R-410A M,MA,P,PH series
Weig ht
Unit Ambient
Condition
Operation Mode Heat Exchange Mode, Bypass Mode, Freshup Mode
Accessories
Drawing Number C: 4D051276A C: 4D051278 C: 4D051280
High
Low
Ultra-high A 3.0 3.0 3.0
High A 2.5 2.6 2.5
Low A 2.1 2.1 2.1
Ultra-high W 560 620 670
High W 490 560 570
Low W 420 470 480
Ultra-high (dB) 37/37.5/38 38.5/39/40 39/39.5/40
High (dB) 35/35.5/36 36/37/37.5 37/37.5/38
Low (dB) 32/33/34 33/34/35.5 34/34.5/35.5
System Natural Evaporating Type
Elements quantity 1 2
Amount (Note. 4) (kg/h) 2.7 4.0 5.4
Pressure Feed Water (MPa) 0.02-0.49
Ultra-high (%) 76 78 74
High (%) 767874
Low (%) 77.5 79 76.5
Ultra-high (%) 64 66 62
High (%) 646662
Low (%) 676866
Ultra-high (%) 67 71 65
High (%) 677165
Low (%) 697369
Rows × Stages × Fin Pitch (mm) 2
Face Area (m
Widt h
×
Liquid (mm)
Gas (mm)
Water Supply (mm)
Drain PT3/4 External Thread
Net (kg) 102 120 125
Gross (Note 9) (kg) 107 129 134
Around Unit 0°C~40°CDB 80%RH or Less
OA (Note 10) -15°C~40°CDB 80%RH or Less
RA (Note 10) 0°C~40°CDB 80%RH or Less
Depth (mm) 387
×
Air flow rate (m
Static pressure (Pa) 160 140 110
Air flow rate (m
Static pressure (Pa) 120 90 70
Air flow rate (m
Static pressure (Pa) 100 70 60
2
) 0.078 0.118 0.165
3
/h) 500 750 950
3
/h) 500 750 950
3
/h) 440 640 820
12 × 2.2
×
1,764
φ
×
200
832 387
φ
6.4 C1220T (Flare Connection)
φ
12.7 C1220T (Flare Connection)
×
Operation Manual, Installation Manual, Duct Connecting Flange, M4 Tapping Screw (for Connecting Duct),
Water Supply Piping with Strainer, Half-Union Joint (Copper Piping Joint), Flare Nut (Copper Piping Joint),
Refrigerant Piping Insulation Cover, Water Supply Piping Insulation Cover, Sealing Material, Clamp
1,764
×
φ
6.4 C1220T
1,214 387
×
φ
250
×
1,764
×
1,214
6 Product Specification
Si71-812 Product Specification
Note:
1. Cooling and heating capacities are based on the following conditions. Fan is based on High and Ultrahigh.
The figures in the parenthesis indicate the heat reclaimed from the heat recovery ventilator.
When calculating the capacity as indoor units, use the following figures : 7.0kW
2. Indoor temperature : 27°C DB, 19°C WB, Outdoor temperature : 35°C DB.
3. Indoor temperature : 20°C DB , Outdoor temperature : 7°C DB, 6°C WB.
4. Humidifying capacity is based on the following condition : Indoor temperature : 20°C DB, 15°C WB,
Outdoor temperature : 7°C DB, 6°C WB.
5. The operating sound measured at the point 1.5m below the center of the unit is converted to that
measured at an anechoic chambar built in accordance with the JIS C 1502 condition. The actual
operating sound varies depending on the surrounding conditions (near running unit's sound, reflected
sound and so on) and is normally higher than this value.
For operation in a quiet room, it is required to take measures to lower the sound. In details, refer to
engineering data.
6. The noise level at the air discharge port is about 8-11 dB higher than the unit's operating sound.
For operation in a quiet room, it is required to take measures to lower the sound for example install
more than 2m soft duct near the air discharge grille.
7. Air flow rate can be changed over to Low mode or High mode.
8. Normal Amp., input, efficiency depend on the above air flow rate value.
9. In case of holding full water in humidifier
10.OA : fresh air from outdoor, RA : return air from room
11.The specifications, designs and information here are subject to change without notice.
12.Temperature Exchange Efficiency is a mean value in cooling and heating.
13.Efficiency is measured under the following conditions. Ratio of rated external static pressure has been
kept as follows. Outdoor side to indoor side = 7 to 1
14.Feed clean water. 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 years (1500 hours), under the supply water conditions of hardness :
400mg/l.)
Annual operating hours : 10hours/day × 26days/month × 5months = 1300hours
15.In heating operation, freezing of the outdoor unit's coil increases. Heating capability decreases and the
system goes into defrost operation.
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.
16.When connecting with a VRV Heat Recovery type outdoor unit and bringing the RA (exhaust gas intake)
of this unit directly in from the ceiling, connect to a BS unit identical to the VRV indoor unit (master unit),
and use group-linked operation. See the Engineering Data for details.
17.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. "6")
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.
Product Specification 7
Product Specification Si71-812
1.2 With DX-coil
Type VKM50GAV1 VKM80GAV1 VKM100GAV1
Refrigerant R410A
Power Supply 220-240V, 1ph., 50Hz
Ultra-high
Air Flow Rate &
Static Pressure
(Note 6)
Normal Amp.
(Note 7)
Normal Input
Fan Type Sirocco Fan
Motor Output kW 0.280×2 0.280×2 0.280×2
Sound Level
(Note 4)
Temp. Exchange
Efficiency
Enthalpy Exchange
Efficiency (Cooling)
Enthalpy Exchange
Efficiency (Heating)
Casing Galvanized Steel Plate
Insulating Material Self-Extinguishable Urethane Foam
Heat Exchanging System Air to Air Cross Flow Total Heat (Sensible + Latent Heat) Exchange
Heat Exchanger Element Specially Processed Nonflammable Paper
Air Filter Multidirectional Fibrous Fleeces
Coil (Cross Fin Coil)
Cooling Capacity (Note 2) (kW) 4.71 (1.91) 7.46 (2.96) 9.12 (3.52)
Heating Capacity (Note 3) (kW) 5.58 5(2.38) 8.79 (3.79) 10.69 (4.39)
Dimensions Height
Connection Duct Diameter (mm)
Piping Connection
Refrigerant Control Electronic Expansion Valve
Connectable Outdoor Unit R-410A M,MA,P,PH series
Weight Net (kg) 96 109 114
Unit Ambient
Condition
Operation Mode Heat Exchange Mode, Bypass Mode, Fresh up Mode
Accessories
Drawing Number C: 4D051281 C: 4D051283 C: 4D051284
High
Low
Ultra-high A 3.0 3.0 3.0
High A 2.5 2.6 2.5
Low A 2.1 2.1 2.1
Ultra-high W 560 620 670
High W 490 560 570
Low W 420 470 480
Ultra-high (dB) 38/38.5/39 40/41/41.5 40/40.5/41
High (dB) 36/36.5/37 37.5/38/39 38/38.5/39
Low (dB) 33.5/34.5/35.5 34.5/36/37 35/36/36.5
Ultra-high (%) 76 78 74
High (%) 767874
Low (%) 77.5 79 76.5
Ultra-high (%) 64 66 62
High (%) 646662
Low (%) 676866
Ultra-high (%) 67 71 65
High (%) 677165
Low (%) 697369
Rows × Stages × Fin Pitch (mm) 2
Face Area (m
Widt h
×
Liquid (mm)
Gas (mm)
Drain PT3/4 External Thread
Around Unit 0°C~40°CDB 80%RH or Less
OA (Note 8) -15°C~40°CDB 80%RH or Less
RA (Note 8) 0°C~40°CDB 80%RH or Less
Depth (mm) 387
×
Air flow rate (m
Static pressure (Pa) 180 170 150
Air flow rate (m
Static pressure (Pa) 150 120 100
Air flow rate (m
Static pressure (Pa) 110 80 70
2
) 0.078 0.118 0.165
3
/h) 500 750 950
3
/h) 500 750 950
3
/h) 440 640 820
12 × 2.2
×
1,764
φ
×
200
832 387
φ
6.4 C1220T (Flare Connection)
φ
12.7 C1220T (Flare Connection)
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Operation Manual, Installation Manual, Warranty, Duct Connecting Flange, M4 Tapping
Screw (for Connecting Duct), Refrigerant Piping Insulation Cover, Clamp
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1,764
×
1,214 387
φ
250
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1,764
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1,214
8 Product Specification
Si71-812 Product Specification
Note:
1. Cooling and heating capacities are based on the following conditions. Fan is based on High and Ultrahigh.
The figures in the parenthesis indicate the heat reclaimed from the heat recovery ventilator.
When calculating the capacity as indoor units, use the following figures : 3.5kW
2. Indoor temperature : 27°C DB, 19°C WB, Outdoor temperature : 35°C DB.
3. Indoor temperature : 20°C DB , Outdoor temperature : 7°C DB, 6°C WB.
4. The operating sound measured at the point 1.5m below the center of the unit is converted to that
measured at an anechoic chambar built in accordance with the JIS C 1502 condition. The actual
operating sound varies depending on the surrounding conditions (near running unit's sound, reflected
sound and so on) and is normally higher than this value.
For operation in a quiet room, it is required to take measures to lower the sound. In details, refer to
engineering data.
5. The noise level at the air discharge port is about 8-11 dB higher than the unit's operating sound.
For operation in a quiet room, it is required to take measures to lower the sound for example install more
than 2m soft duct near the air discharge grille.
6. Air flow rate can be changed over to Low mode or High mode.
7. Normal Amp., input, efficiency depend on the above air flow rate value.
8. OA : fresh air from outdoor, RA : return air from room
9. The specifications, designs and information here are subject to change without notice.
10.Temperature Exchange Efficiency is a mean value in cooling and heating.
11.Efficiency is measured under the following conditions. Ratio of rated external static pressure has been
kept as follows. Outdoor side to indoor side = 7 to 1
12.In heating operation, freezing of the outdoor unit's coil increases. Heating capability decreases and the
system goes into defrost operation.
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.
13.When connecting with a VRV Heat Recovery type outdoor unit and bringing the RA (exhaust gas intake)
of this unit directly in from the ceiling, connect to a BS unit identical to the VRV indoor unit (master unit),
and use group-linked operation. See the Engineering Data for details.
14.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."6")
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.
Product Specification 9
Product Specification Si71-812
1.3 Humidifier
VKM50GAMV1 VKM80GAMV1 VKM100GAMV1
Humidifier type Natural evaporating type humidifier
Wetted element Porosity plate 60 pcs. Porosity plate 90 pcs.
Water inlet port φ6.4 C1220T (Flare Connection)
Water outlet port PT3/4
Supply water pressure kg/cm
2
0.2 (Min.) ~ 5.0 (Max.)
Note: 1. Feed clean water (city water, tap water or equivalent) Dirty water may clog the valve or cause dirt
deposits in the water container, resulting in poor humidifier performance. (Never use any cooling tower
water and heating - purpose water.)
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: 150 mg/l. (Life of humidifying element is about 1 year (1,500 hours) under the supply water
conditions of hardness: 400 mg/l.)
Annual operating hours: 10 hours / day × 26 days / month × 5 month = 1,300 hours
2. Maintain the supply water temperature at 5 ~ 50°C and its pressure at 20 ~ 490 kPa (0.2 ~ 5.0 kg/cm
If the water pressure is above 490 kPa (5.0 kg/cm
2
), add pressure reducing valve in between the kit
and the supply water shut - off valve.
3. The supply water line cannot be directly connected with a utility water tap. To unavoidably take water
from such line, employ a CISTERN (gotten configuration authorization).
4. Be sure to provide thermal insulation around the indoor piping as well as the shut - off valves.
5. In order to prevent harmful bacteria from generating, do maintenance on humidifying unit portion at the
beginning and the end of the heating season according to the operation manual.
Porosity plate 120 pcs.
(60×2 pcs.)
2
).
10 Product Specification
Si71-812
Part 3
Operation
1. Operation ..............................................................................................12
1.1 Explanation for Systems.........................................................................12
1.2 Features of VKM-GA(M).........................................................................15
1.3 Central Control System ..........................................................................17
1.4 Restrictions to Control System ...............................................................18
1.5 Operation................................................................................................20
Operation 11
Operation Si71-812
1. Operation
1.1 Explanation for Systems
System Construction
Operation
Independent
Independent Operation System
of Multiple Units
Air conditioner
remote controller
(No. 1)
Air conditioner
remote controller
HRV (VKM) HRV (VKM)
Simultaneous Operation
HRV (VKM)
Air conditioner remote
controller (No. 2)
System Characteristics
• Independent operation of
HRV (VKM) is possible.
• VRV remote controller
can be used.
• Operation is possible
using 2 remote
controllers.
• Multiple HRV (VKM)
units can be
simultaneously controlled
in batch.
[Up to 8 HRV (VKM)
units can be connected.]
Necessary
Accessories
VRV remote
controller
VRV remote
controller
Indoor unit HRV (VKM)
Air conditioner
remote controller
Table 1 Connectable indoor units
HRV (VKM)
VRV Up to 16 Up to 14 Up to 12 Up to 10
Standard System
45678
Up to 8 Up to 6 Up to 4 Up to 2 0
Note: The HRV (VKM) uses two remote control addresses per unit,
and the number of units that can be group controlled are
shown above.
0123
• Multiple VRV indoor units
or HRV (VKM) units can
be connected and
controlled in batch, with
interlocked operation of
HRV (VKM)s and air
conditioners by using the
air conditioner remote
controller.
• The HRV (VKM) unit
can also be operated
independently using the
remote controller for the
indoor unit, even if the
indoor unit is not in
operation.
Air Conditioning Interlocked Control (VRV, SkyAir) System
VRV remote
controller
12 Operation
Si71-812 Operation
System Construction
Indoor unit
Air conditioner
remote controller
Indoor unit
Air conditioner
Batch/Individual Control System
remote controller
HRV (VKM)
Air conditioner
remote controller
HRV (VKM)
ON/OFF
controller
or schedule
timer
System Characteristics
[Unified ON/OFF Controller]
• One controller can control
the “ON/OFF” operation of
16 groups of units
collectively or individually.
• Up to 8 controllers can be
installed in one centralized
transmission line (in one
system), which enables
control of up to 128 groups.
(16 groups x 8 = 128
groups)
[Schedule Timer]
• One schedule timer can
control the weekly schedule
of up to 128 units.
Necessary
Accessories
Unified ON/OFF
controller or
schedule timer, VRV
remote controller
When necessary,
centralized controller
[Centralized Controller]
Zone 1Zone 2
Indoor unit
Air conditioner
remote controller
HRV (VKM)
Air conditioner
remote controller
Centralized
controller
Note 1
• The centralized controller
provides setting and
monitoring functions, and
can control up to 128 VRV
and HRV (VKM) units
collectively or individually.
Air Conditioning Interlocked Centralized Control System
Zone Control System
Note 1: HRV remote controller cannot be used.
Indoor unit
Air conditioner
remote controller
HRV (VKM)
• Multiple groups can be
controlled within the same
zone.
Centralized
controller, VRV
remote controller
When necessary,
unified ON/OFF
controller or
schedule timer
Opration 13
Operation Si71-812
Recommended Systems
1. System with a remote sensor connected to each indoor unit
On the ceiling chamber system with which generated heat loads are treated in the ceiling space, the suction
thermistor (body thermistor) mounted to the indoor unit alone cannot ensure the detection of room temperatures.
Consequently, for the indoor unit, in order to ensure the detection of the room temperatures, it is recommended to
change to the remote sensor system.
2. Connection of refrigerant piping
For the connection of refrigerant piping on the ceiling chamber system, it is recommended to provide a system
preventing the cool-heat changeover while in automatic mode on the VKM through connecting a base indoor unit in
the same duct system and the VKM to the same BS unit to interlock between the VKM and the indoor unit (*).
* In order to interlock between the VKM and the indoor unit, the group control of remote controllers should be
provided.
Heat
Recovery
BS BS BS
Indoor unit Indoor unit Indoor unit
Air conditioner
remote controller
Remote
sensor
VKM
Air conditioner
remote controller
Remote
sensor
Air conditioner
remote controller
In ceiling space
(ceiling chamber)
Remote
sensor
Fig. 1 When interlocking between the base indoor unit and the VKM:
(Connect multiple indoor units and VKM to a single BS unit.)
BS BS
Indoor
unit
remote controller A remote controller B
VKM
Fig. 2 When connecting a single indoor unit or a single VKM to a single BS unit:
(If this is the case, use the VKM in fixed cooling or heating mode.)
3. Measures against inadequate humidification
When operating the system at a temperature in the ceiling space set higher than the initial setting, the heating
thermostat on the VKM may turn OFF to disable humidification. In this case, according to the field setting on the
remote controller, raise the heating set temperature. For details, refer to information on page 85.
14 Operation
Si71-812 Operation
1.2 Features of VKM-GA(M)
Basic control of VKM
VKM sucks the air after OA has subjected to total heat exchange with RA, detects the air temperature by
means of the thermistor for inlet air into DX-coil (R3T) to make a judgment on operation mode, cooling or
heating and exercises the control on the capacity of air heat exchanger.
Sensor position and its function
VKM consists of indoor unit + total heat exchanger portion.
Dissimilarities with normal indoor unit are :
- Position of thermostat in the normal indoor unit : Position to detect RA temperature
- Position of thermostat in VKM : Position to detect the air subjected to total heat
exchange between OA and RA.
Therefore, the temperature detected by VKM gets lower than that of the indoor unit thermostat.
Doing so allows VKM to perform treatment of outside air with stability even as the indoor unit stays thermoOFF state because of big difference between the set temperature and suction temperature even though the
set temperature of VKM and indoor unit are the same.
Divert the module of indoor unit Divert the module of total heat exchanger
Total heat
exchanger
element
OA
R2T
Thermistor for
outdoor air
EA
RA
DX-Coil
SA
Humidifier
R1T
Thermistor for
indoor air
electlic
expantion
valve
R4T
R3T
Thermistor for
liquid line
temperature
Thermistor or inlet air into DX-coil (R3T)
- This thermistor exercises the control on the capacity of
heat exchanger by means of electlic expantion valve in
accordance with the difference between detected
temperature and set temperature.
- In the case of automatic mode, judgment on operation
Thermistor for
gas line temperature
R5T
mode, cooling or heating is made based on the detected
temperature.
Because VKM-GA(M) model is equipped with a heat exchanger unit, a PC-board (corresponding to VRV air
conditioner’s PC-board) for controlling the heat exchanger has been built-in in addition to a PC-board for
ventilation. These two PC-boards are connected via remote controller line (P1, P2) to perform an
interlocked control. Its control system provides the same condition when 1 ventilation and 1 VRV air
conditioner have been remotely controlled. No air-conditioning (temperature controlling) function has been
equipped. Therefore, it is necessary to prepare separately an indoor unit for air-conditioning purpose.
Heat
exchanger
unit
Corresponding multiple
type for building PC-board
P1,P2P1,P2
Equivalent
A group of 1 ventilation/1 multiple type for VRV indoor unit
PC-board for ventilation
BRC1A62
(BRC1D527)
remote controller
for air-conditioner
Element of
total heat
exchanger
An image sketch of VKM-GA(M)
Opration 15
Operation Si71-812
[Points to be noted for VKM-GA(M)]
There are following restrictions with VKM-GA(M) model due to its own controlling structure.
1. Stand alone system: No address setting is required because of its automatic addressing function
(corresponding to VRV air conditioner PC-board : Master).
Because it is under a group control, it is always required to connect to a remote controller. The structure
does not permit if no remote controller is connected. A direct connection to a duct is also prohibited.
2. Interlock system : No address setting is required because of its automatic addressing function (Indoor
unit : Master).
•
Basically, the interlocking with an air-conditioner is only made via connection to a remote controller
line (P1, P2).
The display and operation of a
Interlocking of a remote controller group
•
Number of units connectable in case of a remote controller group
remote controller is the same as
a standard indoor unit.
Because 2 pieces of controlling PC-board have been built in a VKM-GAM model, count the remote
controller group as : 1 set = 2 units. The maximum number of units connectable to a remote controller
group is 16.
<Example>
How many units of VKM-GAM model can be connected within a single group?
In case of a group composed of (10 × indoor units + VKM-GAM), the maximum number of VKM-GAM is 3.
In case of 4 units ;
•
External contact point
10 + 3 × 2 = 16 units OK
10 + 4 × 2 = 18 units NG (2 units are in excess)
If you want to start/stop through an external contact point, use external input terminals (T1 and T2).
* If you start/stop using T1 and T2 terminals, the entire remote controller group makes a start/stop.
Note 1) JC/J2 of ventilation PC-board cannot be used. (Because only the ventilation PC-board makes a
start/stop, no synchronized movement with the corresponding VRV indoor unit’s PC-board is
assured.)
16 Operation
Si71-812 Operation
1.3 Central Control System
•
When carrying out a central connection, connect the central line to F1 and F2 only on the corresponding
VRV indoor unit’s PC-board. Do not connect to F1 and F2 on the ventilation side. ( = Connect to the
terminal block X3M.)
An image sketch of internal wiring on the ventilation side
A1P A2P
Ventilation PC-board
Note 1)
JC
J2
F1
F2
P1 P2
Corresponding VRV
indoor unit’s
PC-board
Connection to central
line is prohibited.
Terminal block X3M
T1
T2
F1
F2
P1 P2
F1
F2
Centralized units
P2
P1
Remote controller
for air-conditioner
•
In case of a central control, operation ON/OFF can be done separately by each zone. (In this case, zone
interlocked setting must be kept as the factory setting (17.08.01).)
•
Structure without a remote controller cannot be accepted because the remote controller group is
controlled within a VKM-GA(M) model. (i-Touch controller, central remote controller)
Zone interlock setting : None
* Alteration of set temperature and independent ventilation operation cannot be performed from a central device.
Group interlock zone setting : None
Without a remote controller
Opration 17
Operation Si71-812
1.4 Restrictions to Control System
1.4.1 Do not Give VKM-GA(M) Model a Function to Select Cooling/Heating.
(This is because the operation mode switches automatically
depending on the outdoor conditions regardless of the indoor
temperature when set to "Automatic".)
Give a function to select cooling/heating to either one of these.
1.4.2 Caution when Connecting with a VRV System, Heat Recovery Type
When bringing the RA (exhaust gas intake) of this unit directly in from the ceiling, connect to a BS unit
identical to the VRV indoor unit (master unit), and use group-linked operation.
Outdoor unit for heat recovery
RA
EA
OA
BS Unit BS Unit
SA
• The system must be operated interlocking
with the air conditioner.
Caution
SA
If above setting is not made, the detection of correct temperature is not available and automatic judgment
on proper cooling or heating can not be made when the temperature in the ceiling gets higher than indoor
temperature.
Poor heating or shortage of the amount of humidification may result.
If the indoor unit and this unit are installed with different BS system inevitably, always take following
remedies (1) and (2).
(1) RA (Exhaust and suction) of this unit is not taken directly from inside of the ceiling, connect the suction
duct and suction grille to the fitting port of RA duct to suck the indoor air.
(2) Do not make the selection of heating or cooling in automatic mode and it shall be made by manual
selection from remote controller or centralized controller.
RA
Suction
grille
Give a function to select cooling/heating to either one of these.
Outdoor unit for heat recovery
EA
OA
Give a function to select cooling/heating to either one of these.
BS Unit BS Unit
18 Operation
Si71-812 Operation
1.4.3 Caution when Connecting the Indoor Unit Directly to the Duct
Follow the indications described below
a) 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. “6”.) Refer to
15.10.1 concerning setting method.
EA
OA
SA
Suction
grille
RA
b) Do not connect to the outlet side of the indoor unit. Depending on the fan strength and static pressure,
the unit might back up.
c) When it is connected to the suction side of indoor unit as a direct duct connection system, etc., since
there is a possibility that the body thermo of the indoor unit detects erroneously SA discharge from this
unit as indoor air, use the remote sensor (Optional).
Opration 19
Operation Si71-812
>
>
1.5 Operation
HRV ; Heat Reclaim Ventilation
•
Carefully read this operation manual before using the total heat exchanger. It will tell you how to use the
unit properly and help you if any trouble occurs. This manual explains about the indoor unit only. Use it
along with the operation manual for the outdoor unit. After reading the manual, file it away for future
reference.
•
This unit is an option type for the VRV system air conditioner.
It should normally be used in combination with the P-type VRV system indoor air conditioner. (RXYQ,
REYQ, RXQ)
It is also possible to use this unit as an independent system.
•
This unit cannot control room temperature.
If this is needed, do not install the HRV unit alone, but rather install another indoor unit.
•
Use the remote controller of the VRV system indoor air conditioner to control the unit.
1.5.1 What to do before Operation
This operation manual is for the following systems with standard control. Before initiating operation, contact
your Daikin dealer for the operation that corresponds to your system type and mark.
If your installation has a customized control system, ask your dealer for the operation that corresponds to
your system.
Name of Parts
(1) Hanger bracket
(7) Maintenance cover
(8) Heat exchanger elements
It exchanges the heat (temperature and humidity) from
indoors with the air taken in from outdoors, changes the
outside air to the same condition as indoors and then
brings it indoors.
(6) Electric parts box
(12) Gas pipe
(2) Duct connecting
flange
(3) Exhaust fan
(5) Damper
(4) Air filter (Long life filter)
(10) Air supply fan
(9) Name plate
(11) Direct expansion coil
Important
Sometimes when first using the unit, the smell of the heat
exchanging element may be noticeable, but it is not harmful. The
smell will gradually go away as the unit is used.
(11) Direct expansion coil
(20) Damper motor
(21) EA
Exhaust air
to outdoors
(13) Liquid pipe
(16) Strainer (included)
<VKM-GAMV1 series only
(14) Drain outlet
(19) Remote controller (Optional accessory)
(15) Humidifier (Natural evaporating type)
<VKM-GAMV1 series only>
(17) Feed water tank
<VKM-GAMV1 series only>
(23) RA
Return air
from room
(24) SA
Supply air
(22) OA
Fresh air
from outdoors
(outdoor air)
(15) Humidifier (Natural evaporating type)
<VKM-GAMV1 series only>
20 Operation
(18) Solenoid valve
<VKM-GAMV1 series only
to room
Si71-812 Operation
Remote Controller and Changeover Switch: Name and Function of Each Switch and Display
62
Remote controller for VRV BRC1A62
25
27
33
35
37
34
36
28
29
16
7
9
6
UNIT No.
GROUP
39
13 30 10
4
4142181740
5
Remote controller for VKM BRC1D527 (EU only)
13 2
31
32
11
38
12
5
26
20
22
19
Only the items marked with an asterisk (∗ mark) are explanation relating to the functions and display of
the unit. Unmarked items are functions of the combined air conditioners. When using buttons for
functions which are not available (buttons which are not described in the text) will cause “NOT
AVAILABLE” to be displayed.
Contact your dealer for more detailed descriptions of those functions (buttons).
∗
On/off button
1.
Press the button and the system will start. Press the button again and the system will stop.
2.∗Operation lamp (red)
The lamp lights up during operation or blinks if a malfunction occurs.
3.∗Display “ ” (changeover under control)
May be displayed when combined with a VRV-system air conditioner.
It is impossible to changeover heat/cool with the remote controller when this icon is displayed.
“”
4. Display
(air flow flap)
This displays the direction and mode of the air flow flap of the combined air conditioner.
Opration 21
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