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11. INSTALLATION MANUAL
Please read this Installation Manual carefully before installing the Air Conditioner.
• This Manual describes the installation method of the outdoor unit.
• For installation of the indoor unit, follow the Installation Manual attached to the indoor unit.
ADOPTION OF NEW REFRIGERANT
This Air Conditioner is a new type that has adopted a new refrigerant HFC (R410A) instead of the conven-
tional refrigerant R22 in order to prevent destruction of the ozone layer.
This equipment complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or
equal to Ssc (∗1) at the interface point between the user’s supply and the public system.
It is the responsibility of the installer or user of the equipment to ensure, by consultation with the distribution
network operator if necessary, that the equipment is connected only to a supply with a short-circuit power Ssc
greater than or equal to Ssc (∗1).
Ssc (∗1)
Model
RAV-SM2244AT8(Z)(ZG)-E
RAV-SM2804AT8(Z)(ZG)-E
Ssc (MVA)
1.41
1.72
Contents
1 ACCESSORY PARTS .................................................................................................. 2
2 SAFETY PRECAUTIONS ............................................................................................ 3
3 INSTALLATION OF NEW REFRIGERANT AIR CONDITIONER ................................ 4
4 INSTALLATION CONDITIONS .................................................................................... 6
5 REFRIGERANT PIPING ............................................................................................ 10
6 AIR PURGING ........................................................................................................... 14
7 ELECTRICAL WORK ................................................................................................ 17
8 EARTHING ................................................................................................................ 19
9 FINISHING ................................................................................................................. 20
10 TEST RUN ................................................................................................................. 20
11 ANNUAL MAINTENANCE ......................................................................................... 20
12 AIR CONDITIONER OPERATING CONDITIONS ..................................................... 20
13 FUNCTIONS TO BE IMPLEMENTED LOCALLY ...................................................... 21
14 TROUBLESHOOTING ............................................................................................... 22
15 APPENDIX ................................................................................................................. 24
2 EN
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1 ACCESSORY PARTS
Accessory Parts
INFORMATION
• The main pipe on the gas side of this outdoor unit has a diameter of Ø28.6 mm, but a Ø19.1 mm flare connection is used
where the valve is connected. Be sure to use the Ø19.1 mm pipe and joint provided as accessories for the pipe connection.
• Before installing the unit, check that the unit has the correct model name to prevent the wrong unit from being installed in the
wrong place.
• Before proceeding to weld the refrigerant pipe, be sure to pass nitrogen through the pipe.
• Before installing the indoor units, read the instructions in the installation manual provided with the indoor units.
• Before installing a branch pipe, read the instructions in the installation manual provided with the branch pipe kit.
• In the case of a simultaneous double twin system, use indoor unit with the same capacity for all four indoor units.
• P.C. board settings are required for some of the indoor units if they are to be used in a twin, triple or double twin system.
Refer to the instructions in the installation manual of the branch pipe kit, and ensure that the settings are selected correctly.
• Combination with the indoor units
Combination with the indoor units is possible only when units with the same type are combined. Combinations of units with
different types cannot be used.
Part name Q’ty Shape Usage
Installation manual 1 (Hand this directly to the customer.)
Drain nipple 1
Waterproof rubber cap 1
Protective bush 1 For protecting wires (pipe cover)
Guard material for passage part 1 For protecting passage part (pipe cover)
Clamp filter 1
For conforming to EMC standards
(Used for power wire)
Ø19.1 mm pipe 1 For the pipe inside the outdoor unit
Joint (Ø19.1 – Ø25.4 mm) 1 For connecting the pipe
Joint (Ø25.4 – Ø28.6 mm) 1 For connecting the pipe
Elbow 1 For connecting the pipe
Branch pipe kit Combination indoor unit
RAV-SM2244 RBC-DTWP101E SM56 u 4 units
RAV-SM2804 RBC-DTWP101E SM80 u 4 units
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