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Technibel GRV247M2C5VAA, Technical & Service Manual, Page: 13 / 43

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Technibel GRV247M2C5VAA Technical & Service Manual Download Page 13

4. REFRIGERANT FLOW DIAGRAM

Applicable Indoor Unit : MCAV127C5VAB (x2) KPAV128C5TAA(x2)

Outdoor Unit : GRV247M2C5VAA

10

Outdoor Unit 

Wide tube

O.D.
ø12.7 mm
(1/2 ")

Narrow tube

O.D.
ø6.35 mm
(1/4")

Condenser

Wide tube
service
valve

Compressor A

Accumulator

Compressor B

B

A

A

Narrow
tube
service
valve

Capillary
 tube

Drier

B

Accumulator

Evaporator

Indoor Unit A

Evaporator

Indoor Unit B

Summary of Contents for GRV247M2C5VAA

Page 1: ...ICE MANUAL Outdoor Unit MULTI SPLIT SYSTEM AIR CONDITIONER Outdoor Unit GRV247M2C5VAA MCAV127C5VAB Ceiling Mounted Floor Mounted KPAV128C5TAA Indoor Unit KPAV128C5TAA MCAV127C5VAB GRV247M2C5VAA 0 8180...

Page 2: ...ARNING 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 alu...

Page 3: ...klist before servicing 17 7 3 Tools specifically for R407c 18 7 4 For tubing installation procedures 18 7 5 In case of compressor malfunction 19 7 6 In case refrigerant is leaking 21 7 7 Charging addi...

Page 4: ...1 OPERATING RANGE 1 Temperature Indoor Air Intake Temp Outdoor Air Intake Temp Cooling Maximum 32 C D B 23 C W B 43 C D B Minimum 19 C D B 14 C W B 19 C D B...

Page 5: ...r filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 1030 x 2 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 39 35 33 Outdoor...

Page 6: ...uto Air filter Washable Anti Mold Compressor Rotary Hermetic Refrigerant Amount charged at shipment g R407c 1030 x 2 Refrigerant control Capillary tube Operation sound Indoor Hi Me Lo dB A 39 35 33 Ou...

Page 7: ...5 5 Operating amp Ambient temp 25 C Trip in 6 to 16 sec at 21 A Run capacitor F 25 0 2 Q ty VAC 450 2 Type Propeller Q ty Dia mm 1 460 Fan motor model Q ty 19TFB6064 1 No of poles rpm 230 V 6 850 370...

Page 8: ...230 Nominal output W 10 Coil resistance Ambient temp 20 C BRN WHT 561 8 VLT WHT 197 4 VLT ORG 63 4 YEL ORG 155 7 YEL PNK 115 9 Safety devices Type Internal fuse Operating temp Open C 145 2 Close Run...

Page 9: ...C 145 5 Close Automatic reclosing Run capacitor F 1 5 VAC 440 Flap Motor Model M2LJ24ZE31 Rating AC 208 230 V 50 60 Hz No of poles rpm 8 2 5 3 0 Nominal output W 3 2 5 Coil resistance Ambient temp 20...

Page 10: ...it GRV247M2C5VAA 620 130 100 55 20 20 325 835 850 80 138 58 87 310 285 178 58 58 1 2 3 4 Narrow tube service valve 6 35 1 4 1 Wide tube service valve 12 7 1 2 Power supply wires connection 3 Inter uni...

Page 11: ...Indoor Unit MCAV127C5VAB 58 5 99 5 805 177 41 0 41 0 270 Narrow tube 6 35 1 4 Wide tube 12 7 1 2 Center of tubing hole 2 places Drain hose 18 Remote control unit 18 5 61 172 5 Unit mm 8...

Page 12: ...Indoor Unit KPAV128C5TAA Remote control unit 86 74 74 Center of tubing hole 75 4 places Wide tube 12 7 1 2 Narrow tube 6 35 1 4 Drain hose 26 74 74 900 86 41 41 190 680 18 5 61 172 5 Unit mm 9...

Page 13: ...tdoor Unit GRV247M2C5VAA 10 Outdoor Unit Wide tube O D 12 7 mm 1 2 Narrow tube O D 6 35 mm 1 4 Condenser Wide tube service valve Compressor A Accumulator Compressor B B A A Narrow tube service valve C...

Page 14: ...V Single phase 50Hz Number of Indoor Unit 1 Unit 2 Units Rating Conditions Running Amps A 6 20 12 50 Power Input kW 1 32 2 65 Full Load Conditions Running Amps A 7 2 14 5 Power Input kW 1 55 3 15 Rat...

Page 15: ...ELAY B WHT BLK RED WHT BLK RED YEL WHT YEL BLU BRN PNK GRY CAPACITOR C1 CAPACITOR C3 CAPACITOR C2 THERMOSTAT 23S RED RED BRN BRN BLK RED RED BRN TERMINAL PLATE 3P GRN YEL RED RED BRN BRN BLU RED BRN B...

Page 16: ...MCAV127C5VAB Indoor Unit To avoid electrical shock hazard be sure to disconnect power before checking servicing and or cleaning any electrical parts WARNING KPAV128C5TAA 13...

Page 17: ...ooling Characteristics Indoor inlet air D B temp C 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor inlet air D B temp C Operating current A 12 Low pressure at wide tube service valve kg cm 2 G 32 27 21...

Page 18: ...room around the unit for air intake exhaust and possible maintenance Fig 3 provide a solid base concrete block 10 x 40 cm beams or equal a minimum of 10 cm above ground level to reduce humidity and p...

Page 19: ...hould be allowed to touch refrigerant tubing the compressor or any moving parts of fan motors Regulations on wire diameters differ according to national and local requirements For field wiring regulat...

Page 20: ...osition will differ depending on whether it is in gaseous or liquid phase and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in gaseous state T...

Page 21: ...tallation procedures refer to the installation manuals attached to the indoor unit and outdoor unit 18 Tool Distinction Tool Name Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Ch...

Page 22: ...quickly 3 Checking for sealing Use nitrogen gas for the pressurized gas and never use a refrigerant other than R407C Also do not use oxygen or any flammable gas 4 Evacuation Use a solenoid valve insta...

Page 23: ...f the volume of refrigerant in the cylinder becomes less than 20 of the fully charged amount the composition of the refrigerant starts to change Thus do not use the refrigerant if the amount in the re...

Page 24: ...ubes utilizing substitution with nitrogen N2 in the refrigerant circuit of the unit Leave ends of tubes open during welding 4 Checking for sealing Use nitrogen gas for the pressurized gas and never us...

Page 25: ...ing the air conditioning unit Example In case of charging refrigerant to a unit requiring 0 76Kg using a capacity of 10Kg cylinder the minimum necessary amount for the cylinder is 0 76 10 x 0 20 2 76K...

Page 26: ...ns given in 10 6 In case refrigerant is leaking and completely carry out repairs Only then should you recharge the refrigerant 7 8 Retro fitting existing systems 7 8 1 Use of existing units Never use...

Page 27: ...pressure the control circuit has a built in automatic time delay to allow the internal pressure to equalize As a protective measure the control circuit switches the compressor OFF after 5 minutes or...

Page 28: ...n L LL Dry operation does not occur when the room temperature is under 15 C which is the monitor zone When the compressor stops the indoor fan stops as well NOTE Room temp Cooling operation T 2 C Set...

Page 29: ...least 6 minutes The compressor does not start again until the temperature rises above 8 C or 6 minutes has elapsed 1 Functionally compressor running period or time are of two types 10 minutes and 6 m...

Page 30: ...ck that voltage is in specified range 10 of the rating Check that power is being supplied 9 1 4 Check lead wires and connectors Check that coating of lead wires is not damaged Check that lead wires an...

Page 31: ...Set circuit breaker to OFF Measure insulation resistance of electrical parts in indoor unit 1 Remove both power supply wires and inter unit wires from terminal plate in outdoor unit Measure insulatio...

Page 32: ...n outdoor unit Measure coil resistance of power relay RA RB NO Check power supply Power is being supplied to the outdoor unit Power failure Reset breaker Wait for recovery or contact power company Cir...

Page 33: ...otor capacitor YES YES YES Overload relay is working Refrigerant gas shortage Charge refrigerant gas R407c Temperature of compressor is abnormally high Rotor may be locked up OLR 1 to 4 C2 C3 Fan cann...

Page 34: ...Insulate both wide and narrow tubes separately and then tape together Reduce cooling load or replace the air conditioner with larger capacity Temperature difference is small YES Charge refrigerant ga...

Page 35: ...To indoor unit B Relay RB Relay RA Compressor moter capacitor C3 Compressor moter capacitor C2 Overload relay 1 Overload relay 3 Fan moter capacitor C1 Terminal plate 3P From power supply Outdoor Unit...

Page 36: ...screw where power supply lines are connected on the terminal plate Fig 2 11 1 3 Measurement of Insulation Resistance for Electrical Parts Disconnect the lead wires of the desired electric part from te...

Page 37: ...n of the pointer setting the resistance measuring range of the multimeter to the maximum value The capacitor is good if the pointer bounces to a great extent and then gradually returns to its original...

Page 38: ...mpletely 12 DISASSEMBLY PROCEDURE FOR INDOOR UNIT IMPORTANT Please Read Before Starting Safety precautions for servicing the CEILING MOUNTED indoor unit Center latch Air intake grille Metal clip Air i...

Page 39: ...al of Electrical Component Box 1 Remove the front screw with a screwdriver Fig 4 2 Slide the lid out and up Fig 4 3 Disconnect the wiring as necessary 4 Remove the 4 screws then pull out the electrica...

Page 40: ...e direction of the arrow Fig 6 3 Remove the 2 screws to pull off the flap motor The arm and cam come off together with the motor Fig 7 12 5 Removing Evaporator Indoor Heat Exchange Coil 1 Remove the 7...

Page 41: ...is built into the drain pan Pull out the drain pan together with the evaporator in the direction of the arrow Fig 10 The foamed polystyrene drain pan is fragile DO NOT apply excessive force when remov...

Page 42: ...the fan casing out 3 Insert a hex wrench in the fan boss and turn it counterclockwise to loosen the centrifugal fan The fan can be removed by sliding it to the left Fig 14 4 Remove the 4 bolts to rem...

Page 43: ...S A C olgiate olona printed in italy R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728...

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