Daikin REYQ72PAYD- Installation Manual

4 English • If the height is exceeded the above, calculate h1 and h2 shown in the figure below, and add h2/2 to the service space of front side and h1/2 to the service space of suction side. DANGER • Do not install unit in an area where flammable materials are present due to risk of explosion result...

English 5 • Outside unit multi connection piping kit and refrigerant branching kit (sold separately) are needed for connection of piping between out-side units (in case of multi system) and piping branches.Use only separately sold items selected specifically according to the outside unit multi conne...

6 English 6-5 Example of connection B1 B2 B3 B4 Example of connection (Connection of 8 indoor units) Outside unit side (3 pipes) Indoor unit side (2 pipes) Suction gas pipe HP/LP gas pipe Liquid pipe Gas pipe Liquid pipe BS Unit Suction gas pipe HP/LP gas pipe Liquid pipe (Suction) gas pipe Liquid p...

English 7 Outside unit multi connection piping kit and Refrigerant branch kit selection Pipe size selection • Refrigerant branch kits can only be used with R410A. • When multi outdoor system are installed, be sure to use the special separately sold Outside unit multi connection piping kit. (BHFP26P9...

8 English Required Conditions Example Dr a wings 1. It is necessa y to increase the 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 e ve r, the pipes that are same pipe siz e with main pipe m ust not be increased 2. For calculation of To...

English 9 7. 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. • Be sure to use a dedicated power circuit. Never use a power supply shared by another appliance. • Never install a phase advanc...

10 English NOTE • Open the knock holes with a hammer or the like. • After knocking out the holes, we recommend you remove any burrs and paint them using the repair paint to prevent rusting. (Refer to figure 17-1, 2) • When passing wiring through the knock holes, remove burrs around the knock holes a...

English 11 • When two wires are connected to a single terminal, connect them so that the rear sides of the crimp contacts face each other. Also, make sure the thinner wire is on top, securing the two wires simultaneously to the resin hook using the included clamp (1). 7-6 Procedure for Wiring Inside...

12 English <Vacuum drying> Evacuate the system from the liquid pipe, suction gas pipe, HP/LP gas pipe and equalizer pipe shutoff valve service ports by using a vacuum pump for more than 2 hours and bring the system to–14.6 psi or less. After keeping the system under that condition for more tha...

English 13 Tightening torque The sizes of the shutoff valves on each model and the tightening torque for each size are listed in the table below. <Size of Shutoff Valve> (Refer to figure 27) 1. Service port 2. Cap 3. Hex holes 4. Shaft (valve body) 5. Seal section To open 1. Remove the cap and...

14 English CAUTION • Make sure to use the protect tool (protective groves and goggles) when charging the refrigerant. • Due to a danger of liquid hammer, the refrigerant must not be charged over the allowable maximum amount when charging the refrigerant. • Do not perform the refrigerant charging ope...

English 15 • After H2P stop blinking (about 12 minutes after turning on the power), check H2P is OFF.If H2P is ON, check the malfunction code in the remote controller of indoor unit and correct the malfunction in accordance with [Remote controller display malfunction code] in chapter 11-2-2. (3) Che...

English 17 • If the check operation was not performed at first istallation, the malfunc-tion code “U3” will be displayed in the remote controller. Perform the check operation following “11-2-2 Procedure of Check Operation  . 13-3 Checks After Test Run Perform the following checks after the test run...