Table of Contents
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This air conditioner uses the new refrigerant R410A.
Contents
Please Read Before Starting .................................. 1
1.
GENERAL .......................................................... 2
2.
INSTALLA TION SITE SELECTION ................... 3
3.
INSTALLATION PROCESS ................................ 8
4.
AIR PURGING ................................................... 12
5.
WIRING INSTRUCTIONS ................................ 15
6.
TEST RUN......................................................... 22
7.
INSTALLATION CHECK SHEET ...................... 23
85264189906000
INSTALLATION INSTRUCTIONS
- Multi Split system air conditioner -
Page
Indoor Units
MCAF94MR5IAA
MCAF124MR5IAA
MCAF184MR5IAA
Combine indoor and outdoor units only as listed in
the combination tables for 2-room or 3-room out-
door units as shown in their respective manuals.
Power Source:
50 Hz, single-phase, 220 - 240 V / 60 Hz, single-phase,
220 V
Combination example
Indoor unit B
Indoor unit A
Outdoor unit
02/2004
COOL/ DRY/HEAT Model
Model Combinations
Outdoor Units
GRF194MR5IAA
GRF244MR5IAA
Indoor unit C
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Table of Contents
Related Manuals for Technibel GRF244MR5IAA
Summary of Contents for Technibel GRF244MR5IAA
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Page 1: Table Of Contents
Outdoor Units IMPORTANT! MCAF94MR5IAA GRF194MR5IAA Please Read Before Starting ........1 MCAF124MR5IAA GRF244MR5IAA MCAF184MR5IAA GENERAL ............2 1-1. Tools Required for Installation (not supplied) 1-2. Accessories Supplied with Unit 1-3. Optional Copper Tubing Kit 1-4. Type of Copper Tube and Insulation Material 1-5. -
Page 2: Important
IMPORTANT! Please Read Before Starting When Installing… This air conditioning system meets strict safety and oper- ating standards. As the installer or service person, it is an …In a Ceiling or Wall important part of your job to install or service the system Make sure the ceiling/wall is strong enough to hold the so it operates safely and efficiently. -
Page 3: General
(for GRF194MR5IAA) cable and tube A B C 4 each (for GRF244MR5IAA) 1-3. Optional Copper Tubing Kit Copper tubing for connecting the outdoor unit to the indoor unit is available in kits which contain the narrow and wide tubing, fittings and insulation. Consult your nearest sales outlet or A/C workshop. -
Page 4: Additional Materials Required For Installation
* 35 (L1+L2) GRF244MR5IAA * 50 (L1+L2+L3) NOTE This outdoor unit requires no refrigerant charge up to the maximum limit for total tubing length of 35 m (GRF194MR5IAA) or 50 m (GRF244MR5IAA). Therefore, no refrigerant needs to be added on-site. - Page 5 GRF194MR5IAA (1) Connecting indoor unit types (94 – 124) at B Indoor unit Outdoor unit φ6.35 (94 – 124 type) φ9.52 φ6.35 (94 – 124 type) φ9.52 Fig. 2a (2) Connecting indoor unit type 184 at B (Length of tube: more than 17 m) Outdoor unit Indoor unit φ6.35...
- Page 6 GRF244MR5IAA (1) Connecting indoor unit types (94 – 124) at C Outdoor unit Indoor unit φ6.35 (94 – 124 type) φ9.52 φ9.52 φ6.35 (94 – 124 type) φ9.52 φ9.52 φ6.35 (94 – 124 type) φ9.52 φ9.52 Fig. 2d (2) Connecting indoor unit type 184 at C (Length of tube: more than 17 m)
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Page 7: Outdoor Unit
2-2. Outdoor Unit Exhaust fan AVOID: Hot air Heat source heat sources, exhaust fans, etc. (Fig. 3) damp, humid or uneven locations. Outdoor unit choose a place as cool as possible. choose a place that is well ventilated. allow enough room around the unit for air intake/ Fig. -
Page 8: Outer Dimensions Of Outdoor Unit
Outer Dimensions of 2-3. Outdoor Unit GRF244MR5IAA model GRF194MR5IAA model Service valve on Service valve on narrow tube side narrow tube side (Outer diameter φ6.35) (Outer diameter φ6.35) Service valve on Service valve on wide tube side wide tube side (Outer diameter φ9.52) -
Page 9: Installation Process
3. Installation Process Embedding the Tubing and Wiring 3-1. Do not connect tubes to locations that are embedded. Be sure to bind refrigerant tubing and inter-unit cables together with vinyl tape. The power cable must be obtained on-site. (φ2.0: Less than 15 m / φ2.6: Less than 20 m / φ3.5: Less than 26 m) Be sure to apply the provided labels to both ends of the inter-unit cables to prevent miswiring. -
Page 10: Caution Before Connecting Tubes Tightly
NOTE Copper When reaming, hold the tube end downward and be tubing sure that no copper scraps fall into the tube. (Fig. 8) (3) Remove the flare nut from the unit and be sure to Reamer mount it on the copper tube. (4) Make a flare at the end of copper tube with a flare tool.* (Fig. -
Page 11: Insulation Of Refrigerant Tubing
Torque wrench Be sure to match refrigerant CAUTION tubing and electric wiring between indoor and outdoor Spanner Indoor unit units. For more details, refer to “Tubing Check Control” in the Technical & Service Manual. Outdoor unit Fig. 14 3-7. Insulation of Refrigerant Tubing IMPORTANT To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated... -
Page 12: Refrigerant Operation System
3-10. Refrigerant Operation System When the air conditioner is turned ON, the compressor starts to work. The compressor absorbs low-temperature and low-pressure refrigerant from the evaporator; the refrigerant is then compressed into high-temperature and high- pressure refrigerant gas and goes into the condenser (COMPRESSION). This high-temperature and high-pressure refrigerant gas is condensed into liquid refrigerant;... -
Page 13: Air Purging
For GRF194MR5IAA, perform the air purge for tubes A Stopper and B. For GRF244MR5IAA, perform the air purge for Cap tightening torque: 20 25 N-m tubes A, B, and C. Use the same procedures for all... - Page 14 (4) With the “Lo” knob of the manifold valve open, run the vacuum pump. Run the pump until the pres- sure is –101 kPa (–76 cmHg). The operation time for the vacuum pump varies with tubing length and the capacity of the pump. The following table shows the amount of time required for evacuation: Table 6 Required time for evacuation when capacity...
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Page 15: Pump Down
(11) Replace the flare nut on the wide tube service port and fasten the flare nut securely with an adjustable wrench or box wrench. Next, mount the valve cap and tighten it with a torque wrench (the cap needs to be tightened with the torque of 200 kg-cm). -
Page 16: Wiring Instructions
(3) Perform cooling operation or forced cooling Wide tube side operation. When the pressure at the low-pressure side is 0.15 – 0.2 MPa (0.5 – 1 kg/cm G), fully close the spindles at the valves on the wide tube side of tubes A, B, and C, and immediately stop opera- tion. -
Page 17: Recommended Wire Length And Diameter
A – C. 5-3. Wiring System Diagram 3 indoor units with GRF244MR5IAA Outdoor Unit Indoor Unit 2 indoor units with GRF194MR5IAA Terminal plate (12P) -
Page 18: Electric Wiring Diagram
5-4. Electric Wiring Diagram INDOOR UNIT MCAF94MR5IAA Inter-unit cables Terminal board W(BK) heat exchanger Room temperature Flap motor sensor Heat exchanger temperature sensor Fan motor BK (ORG) Humidity sensor BK (ORG) Control panel Display/ receiver panel (GRN) (GRN) Black White GRN: Green Yellow Blue... - Page 19 Electric Wiring Diagram for 2-room-multi outdoor unit (GRF194MR5IAA) Before replacing PCBs, turn off the power and check that all CAUTION lamps on the PCB are off before starting work. Electric shock will occur if work is performed while the lamps are lit. Electric Shock Fig.
- Page 20 Electric Wiring Diagram for 3-room-multi outdoor unit (GRF244MR5IAA) Before replacing PCBs, turn off the power and check that all CAUTION lamps on the PCB are off before starting work. Electric shock will occur if work is performed while the lamps are lit.
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Page 21: How To Connect Wiring To The Terminal
5-5. How to Connect Wiring to the Terminal Loose wiring may cause the WARNING terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected. When connecting each power wire to the correspond- ing terminal, follow the instructions below and fasten 7 mm (ACTUAL STRIP... -
Page 22: Wiring Instructions For The Outdoor Unit
5-6. Wiring Instructions for the Outdoor Unit CAUTION The below explanation uses model (GRF244MR5IAA) as an example. With model (GRF194MR5IAA), there is no terminal block C. Be sure to correctly align inter-unit cables A, B, and C. Never use φ2.6 mm VVF cable or a twisted-pair cable for the inter-unit cable. -
Page 23: Test Run
6. Test Run Performing a test run Refer to the test run procedures in the indoor unit installation manual. Perform the test run separately for each connected indoor unit. If 2 units are operated simultaneously, it is not possible to correctly check for errors in tubing and wiring. -
Page 24: Installation Check Sheet
7. Installation Check Sheet The strength of the installation location is sufficient to support the A/C weight. The indoor and outdoor units are installed level and vertically. The power and voltage are as specified. Inter-unit cables are securely fastened to the termi- nal board.