Technibel Climatisation MCAV97MR5TAA Manual

TECHNICAL DATA & SERVICE MANUAL
Indoor Unit Outdoor Unit
MCAV97MR5TAA GRV187M2R5VAA
MULTI-SPLIT SYSTEM AIR CONDITIONER
Indoor Unit Outdoor Unit
MCAV97MR5TAA GRV187M2R5VAA
0.8180.142.0 03/2001

ii
IMPORTANT!
Please Read Before Starting
This air conditioning system meets strict safety and operat-
ing standards. As the installer or service person, it is an
important part of your job to install or service the system
so it operates safely and efficiently.
For safe installation and trouble-free operation, you
must:
●Carefully read this instruction booklet before beginning.
●Follow each installation or repair step exactly as
shown.
●Observe all local, state, and national electrical codes.
●Pay close attention to all warning and caution notices
given in this manual. This symbol refers to a hazard
or unsafe practice which can
result in severe personal injury
or death.
This symbol refers to a hazard
or unsafe practice which can
result in personal injury or
product or property damage.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for
a special problem, contact our sales/service outlet or
your certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tub-
ing are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this
system. Carefully refer to the wiring diagram and
these instructions when wiring. Improper connections
and inadequate grounding can cause accidental
injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause
overheating at connection points and a possible fire
hazard.
When Transporting
Be careful when picking up and moving the indoor and
outdoor units. Get a partner to help, and bend your
knees when lifting to reduce strain on your back. Sharp
edges or thin aluminum fins on the air conditioner can cut
your fingers.
When Installing…
…In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
…In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide
a solid, level foundation for the outdoor unit. This pre-
vents water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of
the flare and union tubes before connecting them,
then tighten the nut with a torque wrench for a leak-
free connection.
• Check carefully for leaks before starting the test run.
When Servicing
• Turn the power OFF at the main power box (mains)
before opening the unit to check or repair electrical
parts and wiring.
• Keep your fingers and clothing away from any moving
parts.
• Clean up the site after you finish, remembering to
check that no metal scraps or bits of wiring have been
left inside the unit being serviced.
Others
• Ventilate any enclosed areas when installing or testing
the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously
toxic gas.
• Confirm upon completing installation that no refriger-
ant gas is leaking. If escaped gas comes in contact
with a stove, gas water heater, electric room heater or
other heat source, it can produce dangerously toxic
gas.
WARNING
WARNING
CAUTION
CAUTION

Table of Contents
Page
Unit combination iv
1OPERATING RANGE 1
2SPECIFICATIONS
2-1Unit Specification 2
2-2Major Component Specifications 4
2-3Other Component Specifications 6
3DIMENSIONAL DATA 7
4COOLING CAPACITY 9
5HEATING CAPACITY 10
6AIR THROW DISTANCE CHART 11
7REFRIGERANT FLOW DIAGRAM 12
8ELECTRICAL DATA
8-1Electrical Characteristic 148-2Electric Wiring Diagrams 15
9INSTALLATION INSTRUCTION
9-1Installation Site Selection 17
9-2Remote Control Unit Installation Position 19
9-3Recommended Wire Length and Diameter 20
10 FUNCTION
10-1Room Temperature Control 21
10-2Dry Operation 23
10-3Freeze prevention 24
10-4Overload prevention 24
10-5Cold draft prevention 25
10-6Defrosting operation 26
11 REFRIGERANT R407C:SPECIAL PRECAUTION WHEN SERVICING UNIT
11-1Characteristics of new refrigerant R407c 28
11-2Checklist before servicing 28
11-3Tools specifically for R407c 29
11-4For tubing installation procedures 29
11-5In case of compressor malfunction 30
11-6In case refrigerant is leaking 32
11-7Charging additional refrigerant 34
11-8Retro-fitting existing systems 34
12 TROUBLESHOOTING
12-1Check before and after troubleshooting 35
12-2Air Conditioner Does not operate 36
12-3Some Parts of Air Conditioner does not operate 40
12-4Air Conditioner operates, but abnormalities are observed 42
12-5If a sensor is defective 44

13 ARRANGEMENT OF ELECTRICAL COMPONENTS 45
14 CHECKING ELECTRICAL COMPONENTS
14-1Measurement of insulation Resistance 4614-2Checking Continuity of Fuse on PCB Ass’y 47
14-3Checking Motor Capacitor 47
APPENDIX INSTRUCTION MANUAL 48
iv

v
■Unit Combination
Combine indoor and outdoor units only as listed below.
Indoor Unit
Outdoor Unit A
B
Refer toOutdoor Unit Symbol of
Indoor Unit
GRV187M2R5VAA A
Indoor Unit
MCAV97MR5TAA
BFig.1
MCAV97MR5TAA
Fig.1

1
1. OPERATING RANGE
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Cooling Maximum 32°C DB / 23°C WB 43°C DB
Minimum 19°C DB / 14°C WB 19°C DB
Heating Maximum 27°C DB 24°C DB / 18°C WB
Minimum 16°C DB –8°C DB / –9°C WB

2. SPECIFICATIONS
2-1. Unit Specifications
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:
Cooling: Indoor air temperature 27°C DB/19°C WB
Outdoor air temperature 35°C DB/24°C WB
Heating: Indoor air temperature 20°C DB
Outdoor air temperature 7°C DB/6°C WB
2
No. of indoor units. 1-unit
Power Source 220 – 240 V ~ 50 Hz
Cooling Heating
Capacity
kW 2.55 3.15
BTU/h 8,900 11,100
Air circulation (High) m3/h 470
Moisture removal (High) Liters/h 0.5 —
Voltage rating V230
Available voltage range V 198 to 264
Running amperes A4.6 4.3
Power input W1000 1150
Power factor %94 97
C.O.P. W/W 2.55 2.7
Compressor locked rotor amperes A24
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer 1-hour OFF / 12-hour ON or OFF
Fan speeds Indoor / Outdoor 3 and Auto / 1
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable, Anti–Mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment gR407C / 830
Refrigerant control Capillary tube
Operation sound Indoor – Hi / Me / Lo dB-A 38 / 33 / 31
Outdoor – Hi dB-A 53
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5
Refrigerant tube Narrow tube mm (in.) 6.35 (1/4)
diameter Wide tube mm (in.) 9.52 (3/8)
Refrigerant tube kit / Accessories Optional / Hanging wall bracket
Indoor Unit Outdoor Unit
Unit dimensions Height mm 270 630
Width mm 805 830
Depth mm 177 305
package dimensions Height mm 243 713
Width mm 855 994
Depth mm 332 413
Weight
Net kg 8.0 61.0
Shipping kg 10.0 66.0
Shipping volume m3
0.07 0.29
Dimensions & Weight Features Electrical Rating Performance
Indoor Unit MCAV97MR5TAA
Outdoor Unit GRV187M2R5VAA

DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:
Cooling: Indoor air temperature 27°C DB/19°C WB
Outdoor air temperature 35°C DB/24°C WB
Heating: Indoor air temperature 20°C DB
Outdoor air temperature 7°C DB/6°C WB
3
No. of indoor units. 2-unit
Power Source 220 – 240 V ~ 50 Hz
Cooling Heating
Capacity
kW 4.70 6.30
BTU/h 17100 21500
Air circulation (High) m3/h 470 x 2
Moisture removal (High) Liters/h 1.0 x 2 —
Voltage rating V230
Available voltage range V 198 to 264
Running amperes A9.3 8.5
Power input W2150 1950
Power factor %98 98
C.O.P. W/W 2.2 3.2
Compressor locked rotor amperes A48
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer 1-hour OFF / 12-hour ON or OFF
Fan speeds Indoor / Outdoor 3 and Auto / 1
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable, Anti–Mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment gR407C / 830 x 2
Refrigerant control Capillary tube
Operation sound Indoor – Hi / Me / Lo dB-A 38 / 33 / 31
Outdoor – Hi dB-A 53
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment m 7.5
Refrigerant tube Narrow tube mm(in) 6.35 (1/4)
diameter Wide tube mm(in) 9.52 (3/8)
Refrigerant tube kit / Accessories Optional / Hanging wall bracket
Indoor Unit Outdoor Unit
Unit dimensions Height mm 270 630
Width mm 805 830
Depth mm 177 305
package dimensions Height mm 243 713
Width mm 855 994
Depth mm 332 413
Weight
Net kg 8.0 61.0
Shipping kg 10.0 66.0
Shipping volume m3
0.07 0.29
Dimensions & Weight Features Electrical Rating Performance
Indoor Unit MCAV97MR5TAA
Outdoor Unit GRV187M2R5VAA

2-2. Major Component Specifications
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Part No. POW–KM98EH(A) - POW-K8EH(B)
Controls Microprocessor
Control circuit fuse 250 V – 3.15 A
Remote Control Unit RCS–8MHPN3E
Type Cross–flow
Number ... Dia. and length mm 1 ... ø95 / L617
Fan motor model ... Number KFV4Q–11H5P -S... 1
No. of poles ... rpm (230 V, High) 4 ... 1190
Nominal output W 10
Coil resistance (Ambient temp. 20°C) ΩWHT – BRN : 561.8
WHT – VLT : 197.4
VLT – ORG : 63.4
ORG – YEL : 155.7
YEL – PNK : 115.9
Safety Type Internal thermal fuse
devices Operating temp. Open °C 145 ± 2
Close —
Run capacitor
µF 0.8
VAC 440
Type Stepping motor
Model MP24GA1
Rating DC 12 V
Coil resistance (Ambient temp. 25°C) ΩWHT – BLU (respectively 4 wires) : 380 ± 7%
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.4
Face area m2
0.130
Heat
Exch. Coil Flap Motor Fan & Fan Motor
Controller
PCB
4
Indoor Unit MCAV97MR5TAA

5
Controller PCB POW–C186CMH
Control circuit fuse 250 V– 3 A
Type Rotary (Hermetic)
Compressor model ... Number C–RN95H5A ... 2 / 80230035B ... 2
Nominal output W 950 x 2
Compressor oil ... Amount cc DAPHNE-FV68S ... 470 x 2
Coil resistance (Ambient temp. 25°C) ΩC – R : 2.54
C – S : 6.36
Type External (OLR 1, 3) External (OLR 2, 4)
Overload relay ... Number MR99114–9201 ... 2 CS–7C115 ... 2
Safety Operating Open °C 145 ± 5 115 ± 3
devices temp. Close °C 69 ± 11 95 ± 5
Operating amp.(Ambient temp. 25°C) Trip in 6 to 16 sec. at 16.5 A —
Run capacitor µF 25 ... 2
... Number VAC 450 ... 2
Type Propeller
Number ... Dia. mm 1 ... ø400
Fan motor model ... Number SG6–51B5P ... 1
No. of poles ... rpm (230 V,High) 6 ... 910
Nominal output W43
Coil resistance (Ambient temp. 20°C) ΩWHT – BRN : 83.4
WHT – PNK: 218.7
Safety Type Internal protector
devices Operating Open °C 130 ± 5
temp. Close Automatic reclosing
Run capacitor µF 2.0
VAC 400
Coil Aluminum plate fin / Copper tube
Rows 2
Fin pitch mm 1.6
Face area m20.453
External Finish Acrylic baked-on enamel finish
Heat
Exch. Coil CompressorFan & Fan Motor
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
outdoor Unit GRV187M2R5VAA

6
2-3. Other Component Specifications
Indoor Unit MCAV97MR5TAA
Transformer (TR) ATR-J105
Rating Primary AC 230V, 50Hz
Secondary 19V, 0.526A
Capacity 10VA
Coil resistance Ω(at 21°C) Primary (WHT – WHT): 205 ± 10%
Secondary (BRN – BRN): 2.0 ± 10%
Thermal cut-off temp. 150°C
Thermistor (Coil sensor ) DNT-TK5131B
Resistance kΩ
0°C 15.0 ± 2%
Thermistor (Room sensor ) DTN-TKS106E
Resistance kΩ25°C 5.0 ± 3%
Outdoor Unit GRV187M2R5VAA
Power Relay (PRA, PRB) DFU24D1-F (M)
Coil rating DC 24V
Coil resistance Ω(at 20°C) 650 ± 10%
Contact rating AC 250V, 20A
Termistor (Coil sensor) PBC-41E-S15
Resistance kΩ–10°C 23.7 ± 5% 25°C 5.3 ± 5%
0°C 15.0 ± 5% 30°C 4.4 ± 5%
10°C 9.7 ± 5% 40°C 3.1 ± 5%
20°C 6.5 ± 5%
Solenoid Coil (4-way Valve SCA, SCB) LB64012 (Coil), VH7100C (Valve)
Coil rating AC 230V, 50Hz, 5W
Coil resistance Ω(at 20°C) 1,408 ± 7%

7
3. DIMENSIONAL DATA
Indoor Unit GRV187M2R5VAA
58.599.5
805 177
41.0 41.0 270
Narrow tube ø6.35 (1/4")
Wide tube ø9.52 (3/8") ... MCAV97MR5TAA
Center of tubing
hole (2 places)
Drain hose ø18
Remote control unit
18.5
61
172.5
Unit : mm

8
Outdoor Unit GRV187M2R5VAA
5858
95 58
337 307
630
19
Narrow tube service valve
ø6.35(1/4")
1
Wide tube service valve
ø9.52(3/8")
2
305
830
4 – ø12 holes
Air discharge
Air intake
538 146
2
Magnified illustration
31
To Indoor Unit B
To Indoor Unit A
3Check Port
Dimensions : mm

230V 50 Hz
RATING CAPACITY 2.55 kW
AIR FLOW RATE 430 m³/h
EVAPORATOR CONDENSER
ENT.TEMP. °C OUTDOOR AMBIENT TEMP. °C
W.B. D.B. 25 30 35 40 43
TC 2.42 2.34 2.23 2.10 1.93
CM 0.82 0.88 0.95 1.04 1.13
21 SHC 1.66 1.62 1.57 1.50 1.42
23 SHC 1.88 1.84 1.79 1.72 1.64
15 25 SHC 2.09 2.05 2.00 1.93 1.85
27 SHC 2.31 2.27 2.21 2.10 1.93
29 SHC 2.42 2.34 2.23 2.10 1.93
31 SHC 2.42 2.34 2.23 2.10 1.93
TC 2.62 2.52 2.39 2.25 2.07
CM 0.84 0.90 0.97 1.07 1.16
21 SHC 1.45 1.41 1.35 1.29 1.20
23 SHC 1.67 1.62 1.56 1.50 1.42
17 25 SHC 1.89 1.83 1.78 1.71 1.63
27 SHC 2.11 2.05 1.99 1.92 1.85
29 SHC 2.33 2.26 2.21 2.14 2.06
31 SHC 2.54 2.47 2.39 2.25 2.07
TC 2.77 2.68 2.55 2.39 2.21
CM 0.88 0.93 1.00 1.10 1.19
21 SHC 1.21 1.18 1.12 1.05 0.98
23 SHC 1.43 1.39 1.34 1.27 1.19
19 25 SHC 1.64 1.60 1.55 1.49 1.40
27 SHC 1.85 1.82 1.76 1.70 1.62
29 SHC 2.05 2.03 1.97 1.91 1.83
31 SHC 2.27 2.25 2.19 2.12 2.05
TC 2.94 2.84 2.71 2.54 2.34
CM 0.90 0.96 1.03 1.13 1.23
23 SHC 1.20 1.16 1.10 1.04 0.96
21 25 SHC 1.40 1.37 1.32 1.25 1.18
27 SHC 1.62 1.59 1.53 1.47 1.39
29 SHC 1.82 1.80 1.75 1.68 1.60
31 SHC 2.04 2.01 1.96 1.90 1.82
TC 3.14 3.00 2.84 2.66 2.47
CM 0.92 0.98 1.05 1.15 1.26
23 25 SHC 1.18 1.13 1.06 1.00 0.93
27 SHC 1.38 1.34 1.28 1.21 1.14
29 SHC 1.58 1.55 1.49 1.42 1.36
31 SHC 1.81 1.77 1.70 1.64 1.57
TC: TOTAL COOLING CAPACITY kW
SHC: SENSIBLE HEAT CAPACITY kW
CM: COMPRESSOR INPUT kW
RATING CONDITIONS
OUTDOOR AMBIENT TEMPERATURE 35°C D.B.
INDOOR UNIT ENTERING AIR TEMP. 27°C D.B./19°C W.B.
4. COOLING CAPACITY
9
MCAV97MR5TAA
GRV187M2R5VAA
Indoor Unit
Outoor Unit

5. HEATING CAPACITY
10
Indoor Unit MCAV97MR5TAA
Outdoor Unit GRV187M2R5VAA
–5 0 5 710 15
Outdoor temperature (°C DB)
0
10
20
30
40
50
60
70
80
90
100
110
120
Heating capacity ratio (%)
NOTE
1) … Point of Rating condition
Black dot in the chart indicate the following rating condition.
Indoor : 20°C DB
Outdoor : 7°C DB / 6°C WB
2) Above characteristics indicate instantaneous operation, which does not take into
consideration defrost operation.
3) Fan speed : High
–8

Indoor Unit MCAV97MR5TAA
0123456789
1
2
3
4
Horizontal distance (m)
Axis air velocity (m/s) Vertical distance (m)
Axis air velocity
Flap angle 45°
60°
Room air temp. : 20°C
Fan speed : High
Heating
0123456789
1
2
3
4
Horizontal distance (m)
Axis air velocity (m/s) Vertical distance (m)
Axis air velocity
Flap angle 0°
30°
Room air temp. : 27°C
Fan speed : High
Cooling
6. AIR THROW DISTANCE CHART
11

7. REFRIGERANT FLOW DIAGRAM
12
Indoor Unit MCAV97MR5TAA
Outdoor Unit GRV187M2R5VAA
Heat exchanger
Narrow tube
O. D.
6.35mm
(1/4")
Wide tube
O.D.
9.52mm
(3/8") Muffler
Accumulator Compressor A
4–Way
valve
4–Way
valve
Drier ( )
Check valve
Strainer
Heat exchanger
Narrow tube
O.D.
6.35mm
(1/4")
Wide tube
O.D.
9.52mm
(3/8") Muffler
Accumulator Compressor B
Wide Tube Service valve
Narrow Tube Service valve
( )
Check valve
Strainer
Heat exchanger
Capillary tube
Check
port
Check
port
Indoor Unit A
Indoor Unit B
Drier
Cooling cycle

13
Heat exchanger
Narrow tube
O.D.
6.35mm
(1/4")
Wide tube
O.D.
9.52mm
(3/8") Muffler
Accumulator Compressor A
Capillary
tube
( )
Check valve
Strainer
Heat exchanger
Narrow tube
O.D.
6.35mm
(1/4")
Wide tube
O.D.
9.52mm
(3/8") Muffler
Accumulator Compressor B
( )
Check valve
Strainer
Heat exchanger
Check
port
Check
port
Indoor Unit A
Indoor Unit B
Wide Tube Service valve
Narrow Tube Service valve
Capillary tube
Drier
Drier
4–Way
valve
4–Way
valve
Insulation of Refrigerant Tubing
To prevent heat loss and wet floors due to dripping of
condensation water, both the wide and narrow tubes
must be well insulated with proper insulation
material. The thickness of the insulation should be a min.
8 mm.
After a tube has been insulated,
never try to bend it into a narrow
curve because it can cause the
tube to break or crack.
IMPORTANT
CAUTION
Wide tube
Thickness:
Min. 8 mm
Insulation
Narrow tube
Thickness:
Min. 8 mm
Heating cycle

8. ELECTRICAL DATA
8-1. Electrical Characteristics
The values in the table below indicate the sum of indoor and
outdoor units which are in running condition.
14
NOTE
230V Single phase 50 Hz
Indoor Unit MCAV97MR5TAA
Outdoor Unit GRV187M2R5VAA
Rating Conditions: Indoor Air Temperature 27°C DB / 19°C WB
Outdoor Air Temperature 35°C DB
Full Load Conditions: Indoor Air Temperature 32°C DB / 23°C WB
Outdoor Air Temperature 43°C DB
Number of indoor unit 1 - Unit 2 - Units
(Either A or B) (Both A and B)
Rating Conditions Running amp. A 4.6 9.3
Power input kW 1.0 2.15
Full Load Conditions Running amp. A5.4 10.8
Power input kW 1.23 2.47
230V Single phase 50 Hz
Cooling
Heating
Rating Conditions: Indoor Air Temperature 20°C DB
Outdoor Air Temperature 7°C DB / 6°C WB
Full Load Conditions: Indoor Air Temperature 27°C DB
Outdoor Air Temperature 24°C DB / 18°C WB
Cooling
Heating
Number of indoor unit
Rating Conditions Running Amp. A
Rating Conditions Power Input kW
1 - Unit (Either A or B)
4.3
1.15
2 - Unit (both A and B)
8.5
1.95

8-2. Electric Wiring Diagram
15
Indoor Unit MCAV97MR5TAA