Daikin RXYQ26PY1- Installation Manual

English 4 3. Remote controller 4. Cool/heat selector 5. Personal computer or radio If the electric wave of AM broadcasting is particularly weak, keep distances of 3m or more and use conduit tubes for power and transmission lines. 2. Water qualityWater containing high level of foreign materials may c...

5 English 5. Carry out complete cooling/thermal insulation of water piping and outdoor dehumidification. If complete cooling or thermal insula-tion has not been carried out, any damage may be caused during severe winter due to freezing, in addition to thermal loss. 6. When you stop operation during ...

English 6 2. Because the plate type heat exchanger has a structure which does not permit disassembling and cleaning, follow the following procedures for cleaning: 1) For maintenance purposes it is required to provide for a con- nection port on the water inlet and on the water outlet. You must connec...

7 English 8-4 Examples System example (Refer to figure 8) 1. Field power supply 2. Main switch 3. Earth leak detector 4. Fuse 5. Cool/heat selector 6. Remote controller 7. Outside unit 8. BS unit 9. Indoor unit power supply wiring (sheathed cable) transmission wiring (sheathed cable) Caution • Use a...

English 8 • The wiring to the indoor units must be connected to the F1/F2 (To IN/D UNIT) terminals on the PC board in the outside unit. Field line connection: Power supply wiring and transmission wiring Make sure to connect the power wire to the power terminal block and fix it using attached clamp a...

9 English 9. REFRIGERANT PIPING Caution After completing installation, be sure to open the valve. (See 9-9 Additional refrigerant charge for details) (Operating the unit with the valve shut will break the compressor.)Use R410A to add refrigerant. All field piping must be installed by a licensed refr...

English 10 Not recommendable but in case of emergency You must use a torque wrench but if you are obliged to install the unit without a torque wrench, you may follow the installation method men-tioned below. After the work is finished, make sure to check that there is no gas leak. When you keep on t...

11 English 9-5 Example of connection ∗ Below table is mentioned about the case of heat recovery sytem (3-piping: suction gas, HP/LP gas and liquid pipes). In case of heat pump system (2-piping: gas and liquid pipes), select the pipe size from suction gas pipe for gas pipes and from liquid gas pipe f...

English 12 Required Conditions Example Dr a wings 1. It is necessar y to increase the liquid and suction gas pipe siz e betw een the first br anch kit and the final br anch kit. (Reducers m ust be procured on site) Ho w ev e r, the pipes that are same pipe siz e with main pipe m ust not be increased...

13 English 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 vac-uum drying.To prevent entry of any impurities and insure sufficient pressure resistance, always use the special tools dedicated ...

English 14 Additional refrigerant charge procedure (2)-by Additional refrig-erant charge operation About the system settings for additional refrigerant charge operation, refer to the [Service Precaution] label attached on the electric box cover in the outside unit. 1. Fully open all shutoff valves (...

15 English (Refer to figure 27) 1. Electrical box 2. Cover of electrical box 3. Cover for servicing 4. Inspection cover 5. Points to be noted when providing services 〈 Cautions for check operation 〉 • If operated within about 12 minutes after power supply has been applied to the indoor unit and outs...

English 16 12. CAUTION FOR REFRIGERANT LEAKS (Points to note in connection with refrigerant leaks) Introduction The installer and system specialist shall secure safety against leakage according to local regulations or standards. The follow-ing standards may be applicable if local regulations are not...