2.Special purpose REFNET pipe components must be used for all the pipe work. For further details concerning choosing components, see REFNET and Piping Selection Rules. 3.The Daikin REFNET kits are supplied with insulation intended to fit over the main body of the REFNET joint after installation of the REFNET kit is complete.
EDUS30-900-N REFNET Pipe System Max. Refrigerant Piping Length 3.2.1 Heat Pump System Max. Refrigerant Piping Length (Actual Piping Length) First outside Branch ~ Outside units First Branch ~ Indoor Units Outside Units ~ Indoor Units [b+c] Max. Refrigerant 33 ft or less 131ft or less 394 ft or less Piping Length (ft)
REFNET Pipe System EDUS30-900-N Field Refrigerant Piping 3.3.1 Heat Pump Series 1. The following materials should be used for all refrigerant piping. Materials: Deoxidized phosphorous seamless copper pipe or equivalent 2. The tips for insulation Both Gas, Liquid piping must be insulated. ...
EDUS30-900-N REFNET Pipe System REFNET Joints and Headers 3.4.1 REFNET Joints For gas and liquid branch pipes Make sure that all branch pipes are fitted such that they branch either horizontally or vertically. When the size of the selected field piping is different from that of branch pipe then the connecting section should be cut with a pipe cutter as shown in the figure below.
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REFNET Pipe System EDUS30-900-N When the number of indoor units to be connected to the branch pipes is less than the number of branch pipes available for connection then cap pipes should be fitted to the surplus branches. When the size of the selected field piping is different from that of branch pipe then the connecting section should be cut with a pipe cutter as shown in the figure below.
REFNET Pipe System EDUS30-900-N KHRP25M22T Suction gas side Insulation 3-1/8 1-5/8 13-5/16 14-15/16 Discharge gas side Liquid side Insulation Insulation 1-5/8 11-13/16 9-13/16 1-9/16 13-3/8 11-7/16 D3K03626B 1-9/16 KHRP25M33T Suction gas side Insulation 3-15/16 3-15/16 1-1/2 12-11/16 14-3/16 Liquid side Discharge gas side Insulation Insulation...
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EDUS30-900-N REFNET Pipe System KHRP25M73TU Suction gas side Joint Discharge gas side Joint Liquid side Joint D3K05573 KHRP26M22T, KHRP26M33T C : 3P113149B Installation of Outdoor Units...
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REFNET Pipe System EDUS30-900-N C : 3P113149B Installation of Outdoor Units...
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EDUS30-900-N REFNET Pipe System KHRP25M22T, KHRP25M33T C : 3P113621B Installation of Outdoor Units...
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REFNET Pipe System EDUS30-900-N C : 3P113621B Installation of Outdoor Units...
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EDUS30-900-N REFNET Pipe System KHRP25M72TU, KHRP26M72TU, KHRP25M73TU, KHRP26M73TU 3P161697D Installation of Outdoor Units...
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REFNET Pipe System EDUS30-900-N 3P161697D Installation of Outdoor Units...
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Installation EDUS30-900-N [Heat pump system] [Heat recovery system] F2 Q1 Q2 F2 Q1 Q2 A B C A B C F1 F2 F1 F2 Q1 Q2 A B C F1 F2 F1 F2 Q1 Q2 C/H SELECTOR TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT C/H SELECTOR TO IN/D UNIT TO OUT/D UNIT TO MULTI UNIT IN/D...
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EDUS30-900-N Installation TO IN/D UNIT A B C A B C F1 F2 P1 P2 P1 P2 figure 16 figure 17 figure 18 [Heat pump system] [Heat recovery system] [13] figure 19 figure 20 [A-arrow view] [B-arrow view] figure 21 figure 22 (Fig.
Daikin are used, fire or explosion may occur. Additionally, grounding to gas pipes could cause a gas leak and potential explosion causing severe injury or death.
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(b) Tight -- R-410A does not contain any chlorine, does not The RWEYQ-P units can be combined with Daikin VRV series indoor destroy the ozone layer, and does not reduce the earth’s units for air conditioning purposes.
EDUS30-900-N Installation 2-3 Standard supplied accessories 2-5 Technical specifications • Make sure that the following accessories are included. General RWEYQ72PTJU RWEYQ84PTJU (Check by removing the front panel.) Nominal cooling capacity (2) (MBh) Accessory pipes Nominal cooling capacity (3) (MBh) 94.5 Name For discharge For suction...
Installation EDUS30-900-N SELECTION OF LOCATION Compressor RWEYQ72PTJU RWEYQ84PTJU This unit does not have specifications for outdoor installation. Oil type Synthetic (ether) oil Synthetic (ether) oil The unit must be installed indoors (example: machine room, …). Crankcase heater Paying attention to the conditions mentioned below, select the place Refrigerant type R410A R410A...
EDUS30-900-N Installation Strainer NOTE Install the strainer (accessory) without fail at the inlet of water piping. (If sands, wastes, rust particles, etc. are mixed in the • Prepare a water drainage channel around the foundation to con- water circulation system, damage to the plate type heat densate waste water from around the unit.
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Installation EDUS30-900-N HANDLING OF THE BRAZED PLATE 7-3 Daily service and maintenance TYPE HEAT EXCHANGER Management of water quality The plate type heat exchanger has a structure that does not permit dismantling and cleaning, or replacing any parts. Please pay atten- CAUTION tion carefully to the quality of water to be used for the plate type heat A brazed plate type heat exchanger is used for this unit.
Protection line selection determine the level of removal of scale. 4) After circulating the cleaning solution, discharge the solution RWEYQ72/84PTJU 3, 60 Hz 208-230V 22.4A AWG18-16 from the plate type heat exchanger, fill the heat exchanger with RWEYQ144/168PTJU 3, 60 Hz 208-230V 44.8A...
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Installation EDUS30-900-N 8-3 General Picking power line and transmission line (Refer to figure 9) • Make sure to connect the power source wire to the power source 1. Power supply wiring and wiring for pump operation terminal block and to clamp it as shown in figure 8, chapter “Field (High voltage) line connection”.
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EDUS30-900-N Installation Max. branches No. of branches: [Setting the interlock circuit and pump operation Wire length between outside units:98 ft. output.] Up to 16 branches are possible for transmission wiring. No branch- Pump operation output [high voltage] ing is allowed after branching. •...
Installation EDUS30-900-N 8-5 In case of a local setting WARNING If necessary, do the local settings as mentioned in the table below. For setting, refer to the plate “Cares to be taken in servicing” attached • Use only specified wire and connect wires to terminals tightly. to the cover of electrical components box.
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Not recommendable but in case of emergency You must use a torque wrench but if you are obliged to install the unit [Liquid side] RWEYQ72/84PTJU type: 3/8” 1/2” without a torque wrench, you may follow the installation method men- RWEYQ144PTJU type: 1/2” 5/8”...
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Installation EDUS30-900-N 9-4 Connecting the refrigerant piping The gas piping (both discharge and suction gas pipings in case of the heat recovery system) after branched, install without fail a trap Connect piping to outside unit by using accessory pipes of 8 in. or more using the piping included in the piping kit for con- (Refer to figure 20) necting the outside unit.
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EDUS30-900-N Installation 9-5 Example of connection Only 2 refrigerant pipes are required (suction gas & liquid piping) for heat pump systems. No Branch Selector Box is required. Installation of Outdoor Units...
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Installation EDUS30-900-N 9-6 Air tight test and vacuum drying WARNING The units were checked for leaks by the manufacturer. Confirm that the valves are firmly closed before Air tight test or vac- • Be sure to insulate connection piping, as touching them can uum drying.
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EDUS30-900-N Installation 9-10 Stop valve operation procedure Before charging, check whether the tank has a siphon attached or not. CAUTION How to charge with the siphon tank. Do not open the stop valve until 1-6 of “9-8 Checking of device Charge with the tank upright.
Installation EDUS30-900-N 10. CHECKS AFTER INSTALLATION (1) Check the connection of interlock The outside unit cannot be operated if the circuit interlock circuit has not been connected. (2)• As necessary, configure the sys- Always perform configuration after turning WARNING tem settings onsite by using the ON the power.
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EDUS30-900-N Installation Cautions for check operation 11-4 Check of normal operation • If the system is started within about 12 minutes after the outdoor/ After the check operation is completed, operate the unit normally. indoor units are turned ON, the compressor will not run and H2P (Heating is not possible if the outdoor temperature is 75 °F or higher.
Installation EDUS30-900-N 12. CAUTION FOR REFRIGERANT LEAKS (Points to note in connection with refrigerant leaks) Introduction DANGER Refrigerant gas is heavier than air and replaces oxygen. A massive leak could lead to oxygen depletion, especially in basements, and an asphyxiation hazard could occur leading to serious injury or death. The installer and system specialist shall secure safety against leakage according to local regulations or standards.
EDUS30-900-N Installation 13. Field Setting Settng of the following items can be carried out. <Setting Procedures> <Selection of setting item> Push the SET button (BS2) and adjust the LED <Selection of setting indication to the example shown below condition> according to the required mode (A to G). Push the SET button (BS2) and adjust the LED indication to the example shown below according to the required setting.
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AMERICAS 1645 Wallace Drive, Suite 110 Carrollton, TX75006 info@daikinac.com www.daikinac.com Specifications, designs and other content appearing in this brochure are current as of March 2010 but subject to change without notice. EDUS30-900-N Printed in U.S.A. 03/10 AK.FS.K...
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