Related Manuals for Daikin LREQ5B7Y1
Summary of Contents for Daikin LREQ5B7Y1
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Page 1: Installation Manual
INSTALLATION MANUAL Air cooled refrigeration condensing unit LREQ5B7Y1 LREQ6B7Y1 LREQ8B7Y1 LREQ10B7Y1 LREQ12B7Y1 LREQ15B7Y1 LREQ20B7Y1... - Page 2 2PW40200-15Q...
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Page 4: Table Of Contents
A high surge current from lightning or other sources may cause • This document is an installation manual for the Daikin Air Cooled damage to the condensing unit. Refrigeration Condensing Unit. Before installing the unit, read this •... -
Page 5: Special Notice Of Product
• Since R410A is a mixed refrigerant, the required additional CAUTION refrigerant must be charged in its liquid state. If the refrigerant is charged in a state of gas, its composition changes and the system • Carry out drain piping properly following this installation manual will not work properly. -
Page 6: Model Series
4 Accessory pipes (Installed on bottom frame) the local refrigerant piping when installing the units. • If the work conditions in the following figure do not apply, contact your dealer or Daikin directly. Installation manual LREQ5~20B7Y1 Air cooled refrigeration condensing unit... -
Page 7: Handling The Unit
An inverter condensing unit may cause electronic noise generated < > < > If installed as a single unit When installed in serial from AM broadcasting. Examine where to install the main condensing unit and electric wires, keeping proper distances away from stereo equipment, personal computers, etc. -
Page 8: Placing The Unit
• If the condensing unit is of brine After installation, remove the transportation clasp (yellow) attached Resin damage resistant or heavy brine to the large openings. washers damage resistant type, use nuts Note provided with resin washers to secure Apply a filler cloth on a fork to prevent coating of the bottom frame from the product to the foundation bolts (see coming off and rust from occurring when bringing in the unit with anti- the illustration on the right-hand side). -
Page 9: Selection Of Piping Material
6-1 Selection of piping material • Make sure that the inner side and outer side of the piping used is clean and free of contaminants, such as sulphur, oxide, dust, chips, oil and fat, and water. It is desirable that the maximum oil adhesion in the piping is 30 mg per 10 m. •... -
Page 10: Protection Against Contamination When Installing Pipes
6-2 Protection against contamination when 6-5 Connecting the refrigerant piping installing pipes CAUTION Protect the piping to prevent moisture, dirt, dust, etc. from entering the piping. • In addition to gas and liquid shutoff valves, this unit has a maintenance shutoff valve (see diagram below). Place Installation period Protection method... - Page 11 Removing Pinch Piping CAUTION Precautions when connecting field piping. WARNING • Perform brazing at the gas stop valve before brazing at the liquid Never remove the pinched piping by brazing. stop valve. Failure to observe the instructions in procedure below properly may •...
- Page 12 Tightening torque Handling Precautions for Service Port Check with the following table the sizes of shutoff valves incorporated • Work on the service port with a charge hose provided with a by each model and the tightening torque values of the respective pushing rod.
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Page 13: Field Wiring
When connected at lateral side (bottom) Indoor unit side Remove the knock hole on the bottom frame and route the piping under the bottom frame. Branch piping LREQ5~12 Make the piping T-joint slant downward Gas side shutoff valve Liquid side shutoff valve Brazing Main piping Gas side... -
Page 14: Example Of Wiring Entire System
• This product have reversed phase protection detector that only Note works when the power is turned on. If there exists black out or the • Use conduit for power supply wiring. power goes on and off which the product is operating, attach a •... -
Page 15: Procedure For Power Supply Wiring
7-3 Procedure for power supply wiring Phase and Minimum Recommended Voltage frequency circuit amp. fuses Procedure for Power Supply Wiring LREQ5 3~ 50Hz 380-415V 12.8A LREQ6 3~ 50Hz 380-415V 13.7A LREQ8 3~ 50Hz 380-415V 19.3A LREQ10 3~ 50Hz 380-415V 22.0A LREQ12 3~ 50Hz 380-415V... -
Page 16: Procedure For Wiring Inside Units
Remote switch wiring connections • Do not finish strand wire with solder. • When installing a remote switch, clamp as indicated by the Cup washer following diagram: Crimp-style terminal Secure remote switch wiring to the resin block using a Cut out section clamp (field supply). -
Page 17: Inspection And Pipe Insulation
Conduit • Airtight Perform wiring carefully so that the wiring will not come in contact Pressurize the high-pressure section of the system (liquid piping) to 3.8 MPa (38 bar) and the low-pressure section of the system with the port and part. -
Page 18: Checking Of Device And Installation Conditions
CHECKS AFTER WORK COMPLETION • Liquid pipe arrival minimum temperature 0°C Gas pipe arrival minimum temperature –45°C • Make sure the following works are complete in accordance with the • Reinforce the insulation material for the refrigerant piping installation manual. according to the environment of thermal installation. - Page 19 [The evaporation temperature setting] d.Turn off the operation switch of the outdoor unit after the speci- Refer to the following table for the evaporation temperature. fied amount of refrigerant is replenished. (To prevent liquid • The evaporation temperature is set up by dip switches (DS1). compression) e.[Caution] Fully open the shutoff valves on the gas and liquid sides...
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Page 20: Test Run
[Check through sight glass] How to check malfunction code By operating the pushbutton switches on the PCB, malfunction code items can be displayed on the condensing unit. 1. Make sure that the LED “H1P” is off. Sight glass Full of liquid Foam always A little foam (If the LED is on, press the MODE button (BS1) once.) - Page 24 *4PW74302-1 00000003* 4PW74302-1 2012.06...