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Summary of Contents for Daikin LRMEQ3BY1
- Page 1 Installation and operation manual Air-cooled refrigeration condensing unit Installation and operation manual LRMEQ3BY1 English Air-cooled refrigeration condensing unit LRMEQ4BY1...
- Page 2 (mm) — ≥100 A, B, C — ≥100 ≥100 ≥100 B, E — ≥100 ≥1000 ≤500 A, B, C, E — ≥150 ≥150 ≥150 ≥1000 ≤500 — ≥500 D, E — ≥1000 ≥1000 ≤500 B, D — ≥100 ≥500 B, D, E <H ≤½H ≥250...
- Page 3 2P452548-2B...
- Page 4 2P452548-2B...
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Page 5: Table Of Contents
Table of Contents 6.1.4 To access mode 1 or 2 ..........21 Table of Contents 6.1.5 To use mode 1 ............. 21 6.1.6 To use mode 2 ............. 21 6.1.7 Mode 1 (and default situation): Monitoring settings ..21 6.1.8 Mode 2: Field settings.......... -
Page 6: For The Installer
Technical engineering data ▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). ▪ The full set of latest technical data is available on the Daikin extranet (authentication required). For the installer About the box Outdoor unit (10.1 N·m) -
Page 7: About The Indoor Units
4 Preparation Refrigerant piping Preparation Indoor unit (Blower coil) Indoor unit (Showcase) Preparing the installation site About the indoor units 4.1.1 Installation site requirements of the NOTICE outdoor unit To be sure your system setup (outdoor unit+indoor unit(s)) will work, you have to consult the latest technical Mind the spacing guidelines. -
Page 8: Refrigerant Piping Requirements
4 Preparation 4.2.2 Refrigerant piping requirements A/a: Piping between outdoor unit and piping branching NOTICE Liquid piping Ø9.5 mm Refrigerant R410A requires strict cautions for keeping the system clean and dry. Foreign materials (including mineral Gas piping Ø19.1 mm oils or moisture) should be prevented from getting mixed Same diameter as the connection on the outdoor unit. -
Page 9: Preparing Electrical Wiring
5 Installation Subcooling ratio (K) NOTICE Te –20°C –15°C –10°C –5°C 0°C 5°C Output signals. The outdoor unit is provided with a terminal (X3M) that can output 4 different signals. The signal is 220~240 V AC. The maximum load for all signals 20°C is 0.5 ... -
Page 10: To Install The Outdoor Unit
5 Installation 4× M12 Connecting the refrigerant piping DANGER: RISK OF BURNING 5.3.1 Using the stop valve and service port (mm) To handle the stop valve Make sure not to cover the drain holes. INFORMATION ▪ Make sure to keep all stop valves open during operation. The recommended height of the upper protruding part of ▪... -
Page 11: To Remove The Pinched Pipes
5 Installation NOTICE Thread-locking fluid. Before reattaching the service port cover, apply thread-locking fluid to the screw thread (NOT to the cover or sealing part). Otherwise, condensation water might enter and freeze. Possible consequence: Deformation, refrigerant leakage compressor malfunction. Cover (do NOT apply thread-locking fluid) Sealing part (do NOT apply thread-locking fluid) To close the stop valve Screw thread with thread-locking fluid... -
Page 12: Guidelines When Installing A Sight Glass
5 Installation 3 Recover gas and oil from the pinched piping by using a Where/how Install the dryer after the sight glass, as near to recovery unit. the outdoor unit as possible. Install horizontally. CAUTION Do not vent gases into the atmosphere. 4 When all gas and oil is recovered from the pinched piping, disconnect the charge hose and close the service ports 5 Cut off the lower part of the gas and liquid stop valve pipes... -
Page 13: Checking The Refrigerant Piping
5 Installation 4× Ø6 mm Possibility 3: Downwards 4 Do the following: ▪ Connect the liquid pipe (a) to the liquid stop valve. ▪ Connect the gas pipe (b) to the gas stop valve. Gas piping accessory 1 Gas piping accessory 2 e, e1 Gas piping accessory 3 (cut it to the required length) Field supply... -
Page 14: Checking Refrigerant Piping: General Guidelines
5 Installation 5.4.2 Checking refrigerant piping: General ▪ Never set the gauge pressure of the high pressure section of the system higher than the maximum operation pressure guidelines of 4.0 MPa (40 bar). Connect the vacuum pump through a manifold to the service port of ▪... -
Page 15: To Determine The Additional Refrigerant Amount
5 Installation Liquid line stop valve NOTICE Gas line stop valve Valve A In case of maintenance and the system (outdoor unit+field Valve B piping+indoor units) does not contain any refrigerant any Valve C more (e.g., after refrigerant reclaim operation), the unit has 2 Open valves B and C. -
Page 16: Error Codes When Charging Refrigerant
5 Installation Full of liquid 22 Check the sight glass of the outdoor unit. If the refrigerant is A little foam in the liquid NOT in sealing state, charge extra refrigerant, but do NOT A lot of foam in the liquid exceed 10% of the determined additional refrigerant amount 12 Turn off the operation switch. -
Page 17: Connecting The Electrical Wiring
5 Installation Greenhouse gas emissions of the total refrigerant charge NOTICE expressed as tonnes CO -equivalent In Europe, the greenhouse gas emissions of the total GWP = Global warming potential refrigerant charge in the system (expressed as tonnes -equivalent) is used to determine the maintenance intervals. -
Page 18: Guidelines When Knocking Out Knockout Holes
5 Installation NOTICE 5.6.3 Guidelines when connecting the electrical wiring The operation output P1/P2 of the outdoor unit must be connected to all solenoid valves that are installed upstream Tightening torques of the expansion valves at the indoor unit. This connection is required because the outdoor unit must be able to Wiring Screw size... - Page 19 5 Installation 3N~ 50 Hz W1 R P1 P2 380-415 V L1 L2 L3 Caution signal Warning signal Run signal L1 L2 L3 Operation signal ▪ Respect the following guidelines: Earth leakage circuit breaker Fuse Power supply cable Output signal Guideline Caution and Warning signal Connection recommended NOTICE...
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Page 20: Configuration
6 Configuration Mode 1 and 2 Connecting to the When cables are routed from the unit, a frame protection sleeve for the conduits (PG Mode Description insertions) can be inserted at the knockout Mode 1 Mode 1 can be used to monitor the current hole. -
Page 21: To Access Mode 1 Or 2
6 Configuration Description 6.1.6 To use mode 2 H1P H2P H3P H4P H5P H6P H7P In mode 2 you can make field settings to configure the system. Mode 2 Example: 7‑LEDs display – Mode 2 (H1P ON) Setting 1 You can fine‑tune the value of setting [2‑1] (= T target evaporating temperature) to 8 (= +3°C) as follows: (in mode 2) -
Page 22: Mode 2: Field Settings
6 Configuration 6.1.8 Mode 2: Field settings In mode 2 you can make field settings to configure the system. The LEDs give a binary representation of the setting/value number. Setting Value Description (= binary) [2‑0] –10°C (default) target evaporating temperature. –20°C With this setting the target evaporating temperature can be set in –15°C... -
Page 23: To Connect The Pc Configurator To The Outdoor Unit
7 Commissioning 6.1.9 To connect the PC configurator to the Earth wiring outdoor unit Be sure that the earth wires have been connected properly and that the earth terminals are tightened. Insulation test of the main power circuit Using a megatester for 500 V, check that the insulation resistance of 2 ... -
Page 24: To Perform A Test Run (7-Leds Display)
8 Troubleshooting 7.3.2 To perform a test run (7-LEDs display) Troubleshooting 1 Make sure all field settings you want are set; see "6.1 Making field settings" on page 20. Solving problems based on error 2 Turn ON the power to the outdoor unit and the connected codes indoor units. -
Page 25: Error Codes: Overview
8 Troubleshooting 8.1.2 Error codes: Overview Code Description Criteria Times of Output signal Cause Solution retry Abnormally high pressure level High pressure switch ≥4.0 MPa (40 bar) Warning ▪ The stop valves are closed ▪ Open the gas and liquid stop valves ▪... -
Page 26: Technical Data
9 Technical data Technical data A subset of the latest technical data is available on the regional Daikin website (publicly accessible). The full set of latest technical data is available on the Daikin extranet (authentication required). Service space: Outdoor unit When mounting units side by side, the piping route must be to the front, to the back or downwards. -
Page 27: Wiring Diagram: Outdoor Unit
9 Technical data Double tube heat exchanger Thermistor (Liquid pipe) Propeller fan Thermistor (Subcool heat exchanger outlet) Sight glass Thermistor (Subcool heat exchanger inlet) Capillary tube S1NPH High pressure sensor Compressor S1NPL Low pressure sensor Thermistor (air) S1PH High pressure switch Thermistor (discharge) Electronic expansion valve (Subcooling) Thermistor (suction) -
Page 28: For The User
10 About the system For the user CAUTION About the system Do not insert fingers, rods or other objects into the air inlet or outlet. Do not remove the fan guard. When the fan is NOTICE rotating at high speed, it will cause injury. For future modifications or expansions of your system: A full overview of allowable combinations (for future CAUTION... -
Page 29: Troubleshooting
13 Troubleshooting WARNING Malfunction Measure The system operates ▪ Check if air inlet or outlet of outdoor or ▪ Do not modify, disassemble, remove, reinstall or repair but cooling is indoor unit is not blocked by obstacles. the unit yourself as incorrect dismantling or installation insufficient. -
Page 30: Symptom: Dust Comes Out Of The Unit
14 Relocation ▪ When the tone of operating noise changes. This noise is caused by the change of frequency. 13.1.4 Symptom: Dust comes out of the unit When the unit is used for the first time in a long time. This is because dust has gotten into the unit. - Page 32 4P495373-1 0000000T 4P495373-1 2017.07...
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