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INSTALLATION MANUAL SPLIT SYSTEM Air Conditioners MODELS English RZQ18TAVJU RZR18TAVJU RZQ24TAVJU RZR24TAVJU Français RZQ30TAVJU RZR30TAVJU RZQ36TAVJU RZR36TAVJU RZQ42TAVJU RZR42TAVJU RZQ48TAVJU RZR48TAVJU Español Read these instructions carefully before installation. Keep this manual in a handy place for future reference. This manual should be left with the equipment owner.
figure 1 figure 2 inch (mm) figure 3 figure 4 40 (1000) 40 (1000) or more or more 40 (1000) or more inch (mm) inch (mm) figure 5 figure 6 L > H L > H 40 (1000) 40 (1000) or more or more inch (mm)
40 (1000) 40 (1000) or more or more L > H inch (mm) 18·24 type 30~48 type figure 8 13/16 (20) inch (mm) figure 11 inch (mm) inch (mm) figure 9 figure 10 figure 12 6-5/16 (160) 24-3/8 (620) 6-5/16 (160) 5-1/2 (140) 24-3/8 (620) 5-1/2 (140)
SPLIT SYSTEM Air Conditioners Installation manual CONTENTS DANGER 1. SAFETY CONSIDERATIONS ..........1 • Refrigerant gas is heavier than air and replaces oxygen. A mas- 2. INTRODUCTION..............2 sive leak can lead to oxygen depletion, especially in basements, 2-1. Standard operation limit ............3 and an asphyxiation hazard could occur leading to serious injury 2-2.
(b) Where corrosive gas, such as sulfurous acid gas, is pro- shorted and operated forcibly, or parts other than those speci- duced. fied by Daikin are used, fire or explosion may occur. Corroding copper pipes or soldered parts may result in refrigerant leakage.
BEFORE INSTALLATION 2-1 Standard operation limit Normal operation <Transporting the unit> The figures below assume following operating conditions for indoor and As shown in figure 2, move the unit slowly. (Take care not to let hands or outdoor units: other objects come in contact with rear fins.) Equivalent pipe length ..........
• In areas where the outside air temperature drops below 32°F (0°C) (7)-2 IN CASE OBSTACLES EXIST IN FRONT OF THE OUTLET for more than 12 hours continuously, install a drain-pan heater SIDE (optional accessory) on the bottom frame to prevent the drain from When nothing is obstructing the top freezing.
PRECAUTIONS ON INSTALLATION When something is obstructing the top Installation of single unit (Refer to figure 8-[7]) • Before installation, make sure the unit is level and the foundation is Relation of dimensions of H, A, and L are shown in the table below. sturdy enough to prevent vibration and noise.
REFRIGERANT PIPING 6-3 Protection against contamination when install- ing pipes CAUTION • Cover the ends of pipe to prevent moisture, dirt, dust, etc. from enter- ing the piping. • Do not allow anything other than the designated refrigerant to get •...
• After knocking out the knockout, it is recommended to apply repair 6-6 Thermal insulation of piping paint to the edge and the surrounding end surfaces to prevent rust- • Insulate the field piping (liquid and gas-side). (Not insulating them ing.
(Refer to figure 21) Precautions for handling valve cap 1. Decompression valve 2. Nitrogen • A seal is attached to the point indicated by the arrow. 3. Vacuum pump Take care not to damage it. 4. Valve (Open) 5. Charge hose 6.
(Refer to figure 23) CAUTION 1. Stop valve fixing plate 2. Power supply wiring (including ground wire) or transmission • Use a conduit for field wiring. wiring. • Outside the unit, make sure the low voltage wiring (i.e. for the 3.
8-2 Checking the refrigerant tank CAUTION • Charge the refrigerant to the liquid pipe in its liquid state. • The wiring should be selected in compliance with local specifica- Since R410A is a mixed refrigerant, its composition changes if tions. See the table above. charged in a gaseous state and normal system operation would no •...
(Refer to figure 26) 10-1 Power On–Check Operation 1. R410A Tank (Siphon system) • Make sure to perform the check operation after installation. 2. Measuring instrument (If the air conditioner is operated using the indoor remote controller 3. Valve A without performing the check operation, the malfunction code “U3”...
10-2 Temperature control operation checklist The stop valve of outdoor unit is Open the gas-side stop valve and the liq- left closed. uid-side stop valve. • After check operation is complete, check the temperature control If the right indoor unit piping and Make sure that the right indoor unit piping using normal operation.
11-1 Three main operation methods are available: • To activate the powerful comfort setting under cooling opera- tion, change field setting [2-41]=3. • Basic This setting is used in conjunction with setting [2-8]. The refrigerant temperature is fixed independent from the situation. •...
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Example: Automatic mode during cooling Example: Automatic mode during heating 100% 100% 120°F (49°C) 115°F (46°C) 43°F (6°C) 37°F (3°C) 95°F (35°C) 36°F (2°C) A Actual load curve A Virtual load curve (default automatic mode peak capacity) B Virtual load curve (initial capacity automatic mode) B Load curve C Virtual target value (initial evaporation temperature C Virtual target value (initial condensation tempera-...
11-3 Setting of Heat Pump Lockout and Emergency Heat Mode Heat pump is locked out when the setting below and/or external input to ABC terminal has been made. Setting item display Setting condition display C/H selection MODE TEST Demand Setting item noise Master Slave...
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Heat pump lockout temperature Heat pump would be locked out when the outdoor ambient temperature is smaller than the heat pump lockout temperature. This setting is only effective when heat pump lockout mode has been set. And should make the field setting of indoor unit. Refer to Service Manual for details. Setting item display Setting condition display C/H selection...
12. CAUTION FOR REFRIGERANT LEAKS 4. Dealing with the situations where the result exceeds the maximum concentration level. Where the installation of a facility results in a concentration in excess (Points to note in connection with refrigerant leaks) of the maximum concentration level then it will be necessary to Introduction revise the system.