RXQ18BYM

✅ 1. Preparation before installation

📌 Check the installation location

• The location must ensure good ventilation, unobstructed return air and discharge airflow, and allow easy servicing and maintenance.

• Do not install near sources of steam, corrosive gases or areas prone to fire or explosion.

• Ensure the installation surface is level and has sufficient load-bearing capacity (≥ 350kg).

• Minimum clearances:

  • In front of the outdoor unit: ≥ 1,000mm

  • At the rear and on both sides: ≥ 300mm

  • Above: ≥ 500mm

  • Between outdoor units: ≥ 100mm

  • Height difference between outdoor and indoor units: within Daikin's limits (typically ≤ 50m)

✅ 2. Construction of the outdoor unit base and support frame

🧱 Concrete base

• Base dimensions: length and width 100–200mm greater than the outdoor unit footprint.

• Pour M200 concrete, at least 150mm thick.

• Install M12 or M14 anchor bolts to secure the outdoor unit.

🪵 Steel frame (for suspended or rooftop installations)

• Use load-bearing box-section steel/stainless steel ≥ 5mm thick.

• Weld securely, apply 2 coats of anti-rust paint and an exterior topcoat.

• Check level using a spirit level after completion.

✅ 3. Installation and securing of the RXQ18BYM outdoor unit

• Use a forklift or hoist to lower the outdoor unit into position.

• Place anti-vibration rubber pads under the base feet.

• Tighten the mounting bolts securely, but not excessively, to avoid cracking the unit casing.

• Check that the outdoor unit is level using a spirit level.

✅ 4. Copper pipe (refrigerant) connections

🔧 Copper pipe technical requirements

• Use copper piping of the soft, seamless, continuous-length type (coil) meeting the JIS H3300 Tử Type H standard.

• Pipe diameters must comply with the manufacturer's design for model RXQ18BYM (e.g.: Ø28.58mm or Ø34.9mm depending on capacity).

🔧 Pipe connection technique

• Use flare connections and tighten with a torque wrench to Daikin's specified torque.

• Evacuate the entire system after making the connections.

• Check for leaks using a leak detection spray or pressure gauge.

• Apply insulation and thermal insulation tape for 100% sealed coverage.

✅ 5. Electrical connections

⚡ Power supply specifications

• Power supply: 3-phase ~ 380V – 50Hz

• Power: 13.8kW

• Rated current: refer to Daikin's technical documentation

⚡ Outdoor electrical panel installation

• Electrical wiring: concealed in flexible conduit/PVC conduit.

• Use copper conductors with a cross-sectional area sufficient for the load (minimum 10mm²).

• Install a dedicated circuit breaker for each outdoor unit.

• Provide safe earthing with resistance <10Ω (a separate earth rod if required).

✅ 6. Control signal connections (if applicable)

• Use control wiring to connect to the indoor units, B/C centre or central controller (if used).

• Ensure correct polarity (S1 – S2 – S3) and do not run the wiring in the same conduit as the power supply cables.

✅ 7. Inspection and test run

• Check all of the following:

  • Refrigerant pressure

  • Supply voltage

  • Wiring matches the diagram

  • No refrigerant leaks or electrical leakage

• Start the system from the central controller or the indoor unit.

• Monitor the current, noise, vibration, and outlet air temperature after 10–15 minutes of operation.

✅ 8. Maintenance and recommendations

• Perform periodic maintenance every 3 – 6 months:

  • Clean the heat exchanger

  • Check the refrigerant pressure

  • Retighten the electrical connections

  • Check the outdoor unit fan and starting capacitor

• The unit should not operate continuously for more than 24h/day at high capacity.

Would you like me to convert this content into file PDF, or format it as technical presentation slides for team training?