Daikin RWEYQ252PTJU- Installation Manual

5 English 3. SELECTION OF LOCATION This unit does not have specifications for outdoor installation. The unit must be installed indoors (example: machine room, …). Paying attention to the conditions mentioned below, select the place for installation with a prior approval of customer. 1. The foundatio...

English 6 NOTE • Prepare a water drainage channel around the foundation to con-densate waste water from around the unit. • If the unit is to be installed on a roof, check the strength of the roof and its drainage facilities first. • Make sure the area around the machine drains properly by setting up...

7 English 7-3 Daily service and maintenance 1. Management of water qualityThe plate type heat exchanger has a structure that does not permit dismantling and cleaning, or replacing any parts. Please pay attention carefully to the quality of water to be used for the plate type heat exchanger in order ...

English 8 8. FIELD WIRING NOTE • All field wiring and components must be installed by a licensed elec- trician and must comply with relevant local and national regulations. • The field wiring must be carried out in accordance with the wiring diagrams and the instructions given below. • Be sure to us...

English 10 Field line connection: L1, L2, L3, phase of the power supply wiring should be clamped to the safety catch using the included clamp material.The green and yellow striped wrapped wires should be used for ground-ing.Make sure to connect the power wire to the power terminal block and fix it u...

11 English 9. REFRIGERANT PIPING CAUTION After completing installation, be sure to open the valves. (See 9-9 Additional refrigerant charge for details) (Operating the unit with the valves shut will break the compressor.)Use R410A to add refrigerant. (The R410A refrigerant cylinder hasa pink stripe p...

English 12 Precautions when connecting pipes • See the following table for flare part machining dimensions.• When connecting the flare nuts, apply refrigerant oil to the inside of the flares and turn them three or four times at first.(Use ester oil or ether oil.) • See the following table for tighte...

13 English 9-5 Example of connection ∗ In case of a system of switching between cooling and heating, all systems use 2-tube piping (for suction gas piping and liquid piping). No BS unit is required. Example of connection (Connection of 8 indoor units Heat pump system) Single outside unit installed (...

English 14 9-6 Air tight test and vacuum drying The units were checked for leaks by the manufacturer.Confirm that the valves are firmly closed before Air tight test or vacuum drying.To prevent entry of any impurities and ensure sufficient pressure resis-tance, always use the special tools dedicated ...

15 English 2. After the vacuum drying is finished, charge the additional refrigerant in its liquid state through the liquid stop valve service port. Taking into account following instructions: • Check that gas and liquid stop valves are closed. • Stop the compressor and charge the specified weight o...

English 16 10. CHECKS AFTER INSTALLATION WARNING • Never connect power supply wiring to the terminal block for remote controller wiring as this could damage the entire system. • Attach the power wire securely. • To avoid injury, always make sure that the circuit breaker on the power supply panel of ...

17 English 〈 Cautions for check operation 〉 • If the system is started within about 12 minutes after the outdoor/ indoor units are turned ON, the compressor will not run and H2P lights up. Before starting an operation, always verify that the LED dis-play shows the contents of the table in “ 11-3 Che...

English 18 Pay a special attention to the place, such as a basement, etc. where refrigerant can stay, since refrigerant is heavier than air. Procedure for checking maximum concentration Check the maximum concentration level in accordance with steps 1 to 4 below and take whatever action is necessary ...