Technibel GRF148MR5IAA Technical & Service Manual
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Technibel GRF148MR5IAA Technical & Service Manual

Dc inverter multi-system air conditioner
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TECHNICAL &
SERVICE MANUAL
OUTDOOR UNIT : GRF148MR5I
DC INVERTER MULTI-SYSTEM AIR CONDITIONER
Capacity
GRF148MR5I
GRF318MR5I
RoHS
This product does not contain any hazardous substances prohibited by the RoHS Directive.
•
WARNING
• You are requested to use RoHS compliant parts for maintenance or repair.
• You are requested to use lead-free solder.
GRF198MR5I
GRF248MR5I
GRF318MR5I
Outdoor Model No.
4.0kW
GRF148MR5I
5.6kW
GRF198MR5I
6.8kW
GRF248MR5I
8.0kW
GRF318MR5I
F-GAS REGULATION (EC) No 842 / 2006
Do not vent R410A into atmosphere : R410A is a fluorinated greenhouse gas,
covered by Kyoto Protocol, with a Global Warming Potential (GWP) = 1975.
Product Code No.
GRF148MR5IAA (1 852 349 49)
GRF198MR5IAA (1 852 349 50)
GRF248MR5IAA (1 852 349 51)
GRF318MR5IAB
GRF198MR5I
GRF248MR5I
< Applicable Indoor Units >
Wall mounted type
MCAF78MR5I
MCAF98MR5I
MCAF128MR5I
MCAF188R5I
MCAF248R5I
NOTE
For details about the combination, refer to
"Unit Combination Table" in the Appendix of
this manual.
REFERENCE NO.
FILE NO.
Destination: Europe
SM04/2012

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Summary of Contents for Technibel GRF148MR5IAA

  • Page 1 GRF248MR5I GRF318MR5I Destination: Europe DC INVERTER MULTI-SYSTEM AIR CONDITIONER Capacity Outdoor Model No. Product Code No. 4.0kW GRF148MR5I GRF148MR5IAA (1 852 349 49) 5.6kW GRF198MR5I GRF198MR5IAA (1 852 349 50) 6.8kW GRF248MR5I GRF248MR5IAA (1 852 349 51) 8.0kW GRF318MR5I GRF318MR5IAB...
  • Page 2 When Transporting Important! Please Read Before Starting Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees This air conditioning system meets strict safety and when lifting to reduce strain on your back. Sharp edges or operating standards.

  • Page 3: Table Of Contents

    Table of Contents Page APPLICABLE INDOOR UNITS ....................1. OPERATING RANGE ........................2. SPECIFICATIONS 2-1. Unit Specifications ......................2-2. Major Component Specifications ..................2-3. Other Component Specifications ..................3. DIMENSIONAL DATA ........................4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram ....................
  • Page 4 Page APPENDIX INSTALLATION INSTRUCTIONS ................

  • Page 5: Applicable Indoor Units

    APPLICABLE INDOOR UNITS Indoor Unit MCAF78MR5I MCAF98MR5I MCAF128MR5I MCAF188R5I MCAF248R5I Multi-Outdoor Unit 2-Room GRF148MR5I 2-Room GRF198MR5I 4-Room GRF248MR5I 4-Room GRF318MR5I NOTE 1. The table lists the wall-mounted type of indoor units as representative models. 2. For details on the applicable indoor units other than the wall-mounted type, refer to the catalog.

  • Page 6: Operating Range

    1. OPERATING RANGE Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp. Maximum 32 °C D.B. / 23 °C W.B. 43 °C D.B. Cooling Minimum 19 °C D.B. / 14 °C W.B. -5 °C W.B. (*1) Maximum 27 °C D.B. 24 °C D.B.

  • Page 7: Specifications

    2. SPECIFICATIONS 2-1. Unit Specifications Outdoor Unit GRF148MR5I × Indoor Unit MCAF98MR5I Type 2-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Max. Capacity of Operating Indoor Units 6.15 Power Source 220 to 240V Single-Phase 50Hz Voltage Rating 230V Performance...
  • Page 8 Outdoor Unit GRF198MR5I × × Indoor Unit MCAF98MR5I 1 + MCAF188R5I Type 2-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Max. Capacity of Operating Indoor Units 8.65 Power Source 220 to 240V Single-Phase 50Hz Voltage Rating 230V Performance...
  • Page 9 Outdoor Unit GRF248MR5I × Indoor Unit MCAF98MR5I Type 4-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Max. Capacity of Operating Indoor Units 12.2 Power Source 220 to 240V Single-Phase 50Hz Voltage Rating 230V Performance Cooling Heating Capacity...
  • Page 10 Outdoor Unit GRF318MR5I × Indoor Unit MCAF98MR5I Type 4-Room Multi Outdoor Unit Number of Connectable Indoor Units Number of Operatable Indoor Units Max. Capacity of Operating Indoor Units 14.7 Power Source 220 to 240V Single-Phase 50Hz Voltage Rating 230V Performance Cooling Heating Capacity...

  • Page 11: Major Component Specifications

    2-2. Major Component Specifications 2-2-1. Outdoor Unit Outdoor Unit GRF148MR5I Control PCB Part No. CB-CMRV1424EH Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output C-6RVN93H0M / 1,000W Compressor Oil ... Amount FV50S ...
  • Page 12 Outdoor Unit GRF198MR5I Control PCB Part No. CB-CMRV1924EH Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output 5KD240XAB21 / 1,700W Compressor Oil ... Amount FV50S ... 900 Coil Resistance (Ambient Temp. 20 °C) U - V : 0.720 V - W :...
  • Page 13 Outdoor Unit GRF248MR5I Control PCB Part No. CB-CMRV2444EH Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output 5KD240XAB21 / 1,700W Compressor Oil ... Amount FV50S ... 900 Coil Resistance (Ambient Temp. 20 °C) U - V : 0.720 V - W :...
  • Page 14 Outdoor Unit GRF318MR5I Control PCB Part No. CB-CMRV3144EH Controls Microprocessor Control Circuit Fuse 250V 25A Compressor Type DC Twin Rotary (Hermetic) Compressor Model / Nominal Output 5JD420XAB22 / 3,000W Compressor Oil ... Amount FV50S ... 1,200 Coil Resistance (Ambient Temp. 20 °C) U - V : 0.435 V - W :...

  • Page 15: Other Component Specifications

    2-3. Other Component Specifications Quantity of Sensor Model No. Sensor Name of sensor GRF148MR5I GRF198MR5I GRF248MR5I GRF318MR5I Outdoor air temp sensor TKS295B Outdoor heat exchanger sensor TKS292B AW / AN sensor TKS292B BW / BN sensor TKS292B CW / CN sensor TKS292B DW / DN sensor TKS292B...

  • Page 16: Dimensional Data

    3. DIMENSIONAL DATA Outdoor Unit GRF148MR5I Narrow tube service valve × dia.6.35 (1/4") Wide tube service valve × dia.9.52 ( 3/8" ) Unit: mm...
  • Page 17 Outdoor Unit GRF198MR5I Narrow tube service valve × dia.6.35 (1/4") Wide tube service valve × dia.9.52 ( 3/8" ) Unit: mm...
  • Page 18 Outdoor Unit GRF248MR5I Wide tube service valve × dia.12.70 (1/2") Narrow tube service valve × dia.6.35 (1/4") Wide tube service valve × dia.9.52 ( 3/8" ) Unit: mm...
  • Page 19 Outdoor Unit GRF318MR5I Wide tube service valve × dia.12.70 (1/2") Narrow tube service valve × dia.6.35 (1/4") Wide tube service valve × dia.9.52 ( 3/8" ) Unit: mm...

  • Page 20: Refrigerant Flow Diagram

    4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram Outdoor Unit GRF148MR5I Indoor unit Outdoor unit Main Service valve on accumulator accumulator wide tube Wide tube O.D.9.52mm Muffler O.D.9.52mm 4-way valve Defrost valve for hot gas bypass Capillary Electric tube for expansion split flow valve...
  • Page 21 Outdoor Unit GRF198MR5I Indoor unit Outdoor unit Main Service valve on accumulator accumulator wide tube Wide tube O.D.9.52mm O.D.9.52mm Header 4-way valve Defrost valve for hot gas bypass Electric expansion valve Service valve on narrow tube Narrow tube O.D.6.35mm Cooling cycle Heating cycle O.D.6.35mm Strainer...
  • Page 22 Outdoor Unit GRF248MR5I Indoor unit Outdoor unit Service valve on Main wide tube accumulator accumulator Wide tube O.D.9.52mm O.D.9.52mm O.D.9.52mm O.D.12.7mm Header 4-way valve Defrost valve for hot gas bypass Electric expansion valve Service valve on narrow tube Narrow tube O.D.6.35mm O.D.6.35mm O.D.6.35mm...
  • Page 23 Outdoor Unit GRF318MR5I Indoor unit Outdoor unit Service valve on Main wide tube accumulator accumulator Wide tube O.D.9.52mm O.D.9.52mm O.D.12.7mm O.D.12.7mm Header 4-way valve Defrost valve for hot gas bypass Electric expansion valve Service valve on narrow tube Narrow tube O.D.6.35mm O.D.6.35mm O.D.6.35mm...

  • Page 24: Performance Data

    5. PERFORMANCE DATA 5-1. Temperature Charts 5-1-1. Temperature Charts (GRF148MR5I) × Outdoor Unit GRF148MR5I Indoor Unit MCAF78MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart...
  • Page 25 × Outdoor Unit GRF148MR5I Indoor Unit MCAF98MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart Lo fan Hi fan (16.2)
  • Page 26 × Outdoor Unit GRF148MR5I Indoor Unit MCAF128MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart Lo fan Hi fan (14.2)
  • Page 27 5-1-2. Temperature Charts (GRF198MR5I) × Outdoor Unit GRF198MR5I Indoor Unit MCAF78MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart Lo fan Hi fan...
  • Page 28 × Outdoor Unit GRF198MR5I Indoor Unit MCAF98MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart Lo fan Hi fan HH fan...
  • Page 29 × Outdoor Unit GRF198MR5I Indoor Unit MCAF128MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart (40.8) Lo fan Hi fan...
  • Page 30 × Outdoor Unit GRF198MR5I Indoor Unit MCAF188R5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart HH fan Lo fan Hi fan...
  • Page 31 5-1-3. Temperature Charts (GRF248MR5I) × Outdoor Unit GRF248MR5I Indoor Unit MCAF78MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart Lo fan Hi fan...
  • Page 32 × Outdoor Unit GRF248MR5I Indoor Unit MCAF98MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart Lo fan Hi fan HH fan...
  • Page 33 × Outdoor Unit GRF248MR5I Indoor Unit MCAF128MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart (40.8) Lo fan Hi fan...
  • Page 34 × Outdoor Unit GRF248MR5I Indoor Unit MCAF188R5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart HH fan Lo fan Hi fan...
  • Page 35 × Outdoor Unit GRF248MR5I Indoor Unit MCAF248R5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart Lo fan Hi fan HH fan...
  • Page 36 5-1-4. Temperature Charts (GRF318MR5I) × Outdoor Unit GRF318MR5I Indoor Unit MCAF78MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart (35.7) Lo fan...
  • Page 37 × Outdoor Unit GRF318MR5I Indoor Unit MCAF98MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart (35.7) Lo fan Hi fan...
  • Page 38 × Outdoor Unit GRF318MR5I Indoor Unit MCAF128MR5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart (35.7) Lo fan Hi fan...
  • Page 39 × Outdoor Unit GRF318MR5I Indoor Unit MCAF188R5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart (35.7) Lo fan Hi fan...
  • Page 40 × Outdoor Unit GRF318MR5I Indoor Unit MCAF248R5I Cooling Characteristics Heating Characteristics (RH : 46%, Indoor fan speed : High fan) (RH : 85%, Indoor fan speed : High fan) (230V, 50Hz) (230V, 50Hz) (1) Low pressure performance chart (1) High pressure performance chart (35.7) Lo fan Hi fan...

  • Page 41: Electrical Data

    6. ELECTRICAL DATA 6-1. Electric Wiring Diagrams Outdoor Unit GRF148MR5I To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-56900-2...
  • Page 42 Outdoor Unit GRF198MR5I To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-84200-0...
  • Page 43 Outdoor Unit GRF248MR5I To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-57100-0...
  • Page 44 Outdoor Unit GRF318MR5I To avoid electrical shock hazard, be sure to WARNING disconnect power before checking, servicing and/or cleaning any electrical parts. 8FA2-5257-89000-0...

  • Page 45: Functions

    7. FUNCTIONS 7-1. Explanation of Functions The numerical values such as temperature, frequency, time and current in parentheses are an example NOTE of GRF318MR5I and the values are different from the other models. Control/conditions Unit operation Explanation INITIAL Breaker is ON. Power is supplied to the indoor and outdoor unit control circuits, however the unit remains stopped.
  • Page 46 Control/conditions Unit operation Explanation HEAT When defrost operation Non-stop defrost Defrost operation begins based on outdoor heat begins, frost has formed exchanger temperature and outdoor air on the outdoor unit temperature conditions. (when the ambient air Indoor fan : Stopped Non-stop defrost (Refer to Fig.
  • Page 47 Control/conditions Unit operation Explanation COOL The ON/OFF operation The operation lamp illuminates. The outdoor unit does not operate for 3 minutes button on the remote even after the breaker is turned ON. The indoor fan operates at the set fan speed. controller is pressed.
  • Page 48 (1/f fluctuation fan) Control/conditions Unit operation Explanation SENSOR The ON/OFF operation The operation lamp illuminates. The outdoor unit does not operate for 3 minutes button on the remote even after the breaker is turned ON. The indoor fan operates at the set fan speed. controller is pressed.

  • Page 49: Protective Functions

    7-2. Protective Functions NOTE The numerical values such as temperature, frequency, time and current in parentheses are an example of GRF318MR5I and the values are different from the other models. 7-2-1. Defrost Detection and Release (1) Non-stop defrosting Defrosting sequence 4-way valve ON Defrost detection occurs in either of the following cases: •...
  • Page 50 7-2-2. Current Control The operating current may rise as a result of causes including increasing heating or cooling loads or decreases in power voltage. In these cases, the operating frequency is automatically reduced, or operation is stopped, in order to control the operating current so that it is (20 A) or less.
  • Page 51 7-2-3. Low Start Current Operation starts at (8 Hz), and the start current is less than the normal operating current. This prevents the flickering of fluorescent lights or television screens that occurs when ordinary A/C units start. 7-2-4. Compressor Temperature Control To protect the compressor coil from overheating, the operating frequency is controlled based on the compressor discharge temperature.

  • Page 52: Troubleshooting

    8. TROUBLESHOOTING 8-1. Precautions before Performing Inspection or Repair Both the indoor unit and outdoor unit include electronic control circuits. Be sure to pay attention to the following before inspecting or repairing the outdoor- side electronic circuits. High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge (charging voltage DC 311 V) even after the power is turned OFF, and some time is required for the charge to dissipate.

  • Page 53: Trouble Diagnosis By Error Monitor Lamps

    8-2. Trouble Diagnosis by Error Monitor Lamps To prevent electric shock, do not inspect or repair until WARNING the Power Lamp on the P.C.Board is turned off. 8-2-1. Location of the Error Monitor Lamps Remove the top plate of outdoor unit and the cover of Electrical Component Box. The Power Lamp and Error Monitor Lamps are located on the P.C.Board of Electrical Component Box.

  • Page 54: Checking The Outdoor System

    8-3. Checking the Outdoor System 8-3-1. Checking the outdoor unit Work procedure Check items (unit operation) • Apply 220 V AC between terminals L and N on the • The LED (red) on the control board must illuminate. outdoor unit terminal plate. •...

  • Page 55: Trouble Diagnosis Of Each Part

    8-4. Trouble Diagnosis of Each Part 8-4-1. Problems of Each Part and Inspection Points For details about the inspection points, refer to the Inspection Points for Each Part. Indoor unit Outdoor unit Others Problems No. of Inspection Points for Each part Inspection points Self-Diagnostics check...
  • Page 56 8-4-2. Inspection Points for Each Part (1) Outdoor control circuit board Refer to 8-3-1. Checking the outdoor unit. Do not remove or insert the outdoor control circuit board connector when power is being supplied to it. NOTE (The controller will be damaged.) (2) Fuse Check it visually or the continuity with a tester.
  • Page 57 (8) Branch tubing temperature sensor Check that the sensor is securely contained in the thermostat holder. (9) Breaker Check whether or not the breaker has been tripped. Check that the breakers and fuses used are of the specified capacity. Check that the breaker and its line are exclusive for A/C use. (10) Refrigerant gas pressure Start a COOL test run, and messure the temperatures of the A/C intake air and discharge air.

  • Page 58: Trouble Diagnosis Of Fan Motor

    8-5. Trouble Diagnosis of Fan Motor This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor. Perform the trouble diagnosis by Test Run mode described on Installation Instructions of indoor unit. Important: (A) Turn OFF the power before connecting or disconnecting the motor connectors.

  • Page 59: Refrigerant R410A: Special Precautions When Servicing Unit

    9. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 9-1. Characteristics of New Refrigerant R410A 9-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22. 9-1-2.
  • Page 60 Tubing precautions Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation. Never use 0.7mm-thick copper tubing or tubing which is less than 0.8mm in thickness, since air conditioners with R410A are subject to higher pressure than those using R22 and R407C.

  • Page 61: Tools Specifically For R410A

    9-3. Tools Specifically for R410A For servicing, use the following tools for R410A Tool Distinction Tool Name Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recovery unit Vacuum pump with anti-reverse flow (*1) Tools specifically for R410A (Solenoid valve-installed type, which prevents oil from flowing back into the unit when the power is off, is recommended.) Vacuum pump (*2)...can be used if the following adapter is attached.

  • Page 62: In Case Of Compressor Malfunction

    9-5. In Case of Compressor Malfunction Should the compressor malfunction, be sure to make the switch to a replacement CAUTION compressor as quickly as possible. Use only the tools indicated exclusively for R410A. See "9-3. Tools Specifically for R410A." 9-5-1. Procedure for Replacing Compressor (1) Recovering refrigerant Any remaining refrigerant inside the unit should not be (1) Recover refrigerant...
  • Page 63 (5) Recharging Configuration and characteristics of cylinders Be sure to charge the specified amount of Valve refrigerant in liquid state using the service port of the wide tube service valve. The proper amount is listed on the unit's nameplate. When the entire amount cannot be charged all at once, charge gradually while operating the unit in Cooling Operation.

  • Page 64: In Case Refrigerant Is Leaking

    9-6. In Case Refrigerant is Leaking Never attempt to charge additional refrigerant when refrigerant has been leaking CAUTION from the unit. Follow the procedure described below to locate points of leaks and carry out repairs, then recharge the refrigerant. (1) Detecting Leaks Use the detector for R410A to locate refrigerant leak points.

  • Page 65: Charging Additional Refrigerant

    9-7. Charging Additional Refrigerant 9-7-1. When Tubes are Extended Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only. Never charge additional refrigerant if refrigerant is leaking from the unit. Follow CAUTION instructions given in "9-6.
  • Page 66 APPENDIX UNIT COMBINATION TABLES < > List of Combination Table Name of Combination Table Model No. of Outdoor Unit Remarks 2-Room Outdoor Unit Combination Table GRF148MR5I OI-852-6-4181-053-00-0 2-Room Outdoor Unit Combination Table GRF198MR5I OI-852-6-4181-054-00-0 4-Room Outdoor Unit Combination Table GRF248MR5I OI-852-6-4181-055-00-0 4-Room Outdoor Unit Combination Table GRF318MR5I...
  • Page 67 If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction. R.D. 28 Reyrieux BP 131-01601 Trévoux CEDEX France Tel. (33) 04.74.00.92.92 - Fax (33) 04.74.00.42.00 http://www.technibel.com Pub. OI-85264181...
  • Page 68 < Combinations of operatable indoor units > GRF148MR5I NOTE (Rated cooling capacity: 4.0 kW) 2.2: MCAF78MR5I 2.65: MCAF98MR5I 3.5: MCAF128MR5I Table 1 Indoor Unit Capacity (kW) COOLING HEATING Indoor Unit Combination Room Room Total Performance Room Room Total Performance Capacity ( Min. - Max. ) Capacity ( Min.
  • Page 69 If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction. R.D. 28 Reyrieux BP 131-01601 Trévoux CEDEX France Tel. (33) 04.74.00.92.92 - Fax (33) 04.74.00.42.00 http://www.technibel.com Pub. OI-85264181...
  • Page 70 < Combinations of operatable indoor units > NOTE GRF198MR5I 2.2: MCAF78MR5I 2.65: MCAF98MR5I (Rated cooling capacity: 5.6 kW) 3.5: MCAF128MR5I 5.15: MCAF188R5I Table 1 Indoor Unit Capacity (kW) COOLING HEATING Indoor Unit Combination Room Room Total Performance Room Room Total Performance Capacity ( Min.
  • Page 71 If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction. R.D. 28 Reyrieux BP 131-01601 Trévoux CEDEX France Tel. (33) 04.74.00.92.92 - Fax (33) 04.74.00.42.00 http://www.technibel.com Pub. OI-85264181...
  • Page 72 < Combinations of operatable indoor units > GRF248MR5I NOTE 2.2: MCAF78MR5I (Rated cooling capacity: 6.8 kW) 2.65: MCAF98MR5I 3.5: MCAF128MR5I 5.15: MCAF188R5I 7.1: MCAF248R5I Table 1 Indoor Unit Capacity (kW) COOLING HEATING Indoor Unit Combination Total Performance Total Performance Room Room Room Room Room Room Room Room Capacity ( Min.
  • Page 73 If operated with only a single unit installed, the returning fluid to the compressor may cause a malfunction. R.D. 28 Reyrieux BP 131-01601 Trévoux CEDEX France Tel. (33) 04.74.00.92.92 - Fax (33) 04.74.00.42.00 http://www.technibel.com Pub. OI-85264181...
  • Page 74 < Combinations of operatable indoor units > GRF318MR5I NOTE (Rated cooling capacity: 8.0 kW) 2.2: MCAF78MR5I 2.65: MCAF98MR5I 3.5: MCAF128MR5I 5.15: MCAF188R5I 7.1: MCAF248R5I Table 1 Indoor Unit Capacity (kW) COOLING HEATING Indoor Unit Combination Room Room Room Room Total Performance Room Room Room...
  • Page 75 R.D. 28 Reyrieux BP 131 - 01601 Trevoux CEDEX France Tel. (33) 04.74.00.92.92 - Fax (33) 04.74.00.42.00 http://www.technibel.com...

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