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▪ A subset of the latest technical data is available on the regional Daikin website (publicly accessible). For the user ▪ The full set of the latest technical data is available on the Daikin Business Portal (authentication required). 9 User safety instructions Instructions for safe operation ...........
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Disconnect the power supply for more Make sure installation, servicing, maintenance and repair than 10 minutes, and measure the comply with instructions from Daikin and with applicable legislation (for example national gas regulation) and are voltage at the terminals of main circuit executed ONLY by authorised persons.
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3 About the box WARNING CAUTION ▪ Do NOT use locally purchased electrical parts inside For walls containing a metal frame or a metal board, use a the product. wall embedded pipe and wall cover in the feed-through hole to prevent possible heat, electrical shock, or fire. ▪...
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4 About the units and options NOTICE About the units and options Where installation from below is NOT possible, such as very high ceilings, access to the unit for installation and Identification service should be possible from the top of the ceiling. Select an installation site that fulfills the following conditions and 4.1.1 Identification label: Fan coil unit...
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5 Unit installation Double nut (field supply) ▪ In places where there is machinery that emits electromagnetic Washer (accessories) waves. Electromagnetic waves may disturb the control system, Hanger bracket (attached to the unit) and cause malfunction of the equipment. ▪ In places where there is a risk of fire due to the leakage of 5.2.2 To create ceiling opening flammable gases (example: thinner or gasoline), carbon fibre,...
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5 Unit installation ▪ Provide adequate safeguards in the water circuit to ensure that the water pressure will never exceed the maximum allowable working pressure. ▪ Provide a proper drain for the pressure relief valve (if installed) to avoid any water from coming into contact with electrical parts. ▪...
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5 Unit installation During filling, it might not be possible to remove all air in the system. Remaining air can be removed during the first operating hours of the unit. The air can be removed from the unit through the manual air purge valve.
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5 Unit installation ▪ Rising piping. If necessary to make the slope possible, you can install rising piping. ▪ Drain hose inclination: 0~75 mm to avoid stress on the piping and to avoid air bubbles. ▪ Rising piping: ≤300 mm from the unit, ≤675 mm perpendicular to the unit.
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Degradation and damage of plastic parts. NOTICE In the case of using remote controller other than Daikin remote controllers, it should have the following features: ▪ Power supply 1 Ph, 230 V, 50 Hz. If a controller with a different power supply rating is used, the power supply can NOT be common with the unit.
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It is therefore recommended to install the equipment and circuit breaker electric wires in such a way that they keep a proper distance from stereo equipment, personal computers, etc. If Daikin brand valves are used Connecting the electrical wiring DANGER: RISK OF ELECTROCUTION WARNING ALWAYS use multicore cable for power supply cables.
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6 Electrical installation WARNING Use an all-pole disconnection type breaker with at least 3 mm between the contact point gaps that provides full disconnection under overvoltage category III. NOTICE X33A Precautions when laying power wiring: ▪ Do NOT connect wiring of different thicknesses to the power terminal block (slack in the power wiring may cause abnormal heat).
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7 Configuration ▪ Design decoration panel (if applicable) ▪ Air flow direction INFORMATION In case the flaps operate automatically: When the fan starts to operate, the flaps open completely and then remain in the set position. Check the below table X33A for appropriate angle settings.
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8 Commissioning Commissioning NOTICE Do NOT interrupt the test run. Checklist before commissioning X33A 1 After the installation of the unit, check the items listed below. 2 Close the unit. 3 Power up the unit. You read the complete installation instructions, as described in the installer reference guide.
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10 About the system CAUTION About the system It is unhealthy to expose your body to WARNING the air flow for a long time. Do NOT modify, disassemble, remove, reinstall or repair the unit yourself as incorrect dismantling or installation may CAUTION cause an electrical shock or fire.
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13 Energy saving and optimum operation Mode Condition Air Water Water WARNING temperature temperature delta T, ▪ Before carrying out any maintenance or repair activity, limit, (DB/WB) limit, (in/out) ΔT ALWAYS switch off the circuit breaker on the supply Cooling Min.
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14 Maintenance and service Standard panel: 14.3 Cleaning the air filter, suction grille, air outlet and outside panels CAUTION Turn off the unit before cleaning the air filter, suction grille, air outlet and outside panels. NOTICE ▪ Do NOT scrub firmly when washing the blade with Design panel: water.
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15 Troubleshooting Design panel: 14.6.2 Shortened maintenance and replacement cycles Shortening of "maintenance cycle" and "replacement cycle" needs to be considered in following situations: The unit is used in locations where: ▪ Heat and humidity fluctuate out of the ordinary. ▪...
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16 Disposal Malfunction Measure The system operates ▪ Check if air inlet or outlet of outdoor or but cooling or heating indoor unit is not blocked by obstacles. is insufficient. Remove any obstacles and make sure the air can flow freely. ▪...
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+ metal + plastic foam Technical data A subset of the latest technical data is available on the regional Daikin website (publicly accessible). The full set of the latest technical data is available on the Daikin Business Portal (authentication required).
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X36A STEPPING MOTOR (DEC.PANEL) X32A and X37A can only be connected to the specified X37A HEATING VALVE Daikin valve options. X50A SERIAL COMMUNICATION Legend for wiring diagrams: Indoor unit: Filter PCB connections: MAIN PCB HARNESS –...
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17 Technical data CONNECTOR (NAKED PCB X36A) CONNECTOR (BYCQ140E PANEL WIRE) X10A CONNECTOR (BYFQ60C PANEL WIRE) 17.2 Dimensions Overview Side views with standard panel (mm) FWC-D Installation and operation manual Fan coil units 3P756931-2C – 2024.04...
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18 Information requirements for ecodesign Installation and operation manual FWC-D Fan coil units 3P756931-2C – 2024.04...
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