This article provides an overview of the installation process for the Quantum Ultra Ducted Ceiling Concealed (RYB-20) system.

<h2 id="isPasted">Introduction</h2>This article provides an overview of the installation process for the <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer">Quantum Ultra Ducted Ceiling Concealed (RYB-20) system</a>.&#xA0;Each section in this article represents a step in the installation process. Click the link in each section to learn about that specific step.&#xA0;Before beginning the installation, refer to the label on the product box to ensure the model number of the indoor unit matches the model number of the outdoor unit.&#xA0;<h2 id="1-selecting-the-installation-location-for-the-indoor--outdoor-units">1. Selecting the Installation Location for the Indoor &amp; Outdoor Units</h2>We recommend understanding the criteria for selecting ideal locations for the indoor and outdoor units.&#xA0;<ul><li style="font-size: 16px;" id="isPasted">Read this <a href="https://help.pioneerminisplit.com/en-US/install-ryb-installation-locations-5957137" target="_blank" rel="noopener noreferrer" id="isPasted">article</a> for guidelines on selecting the ideal installation locations for your indoor and outdoor units.</li></ul><h2 id="2-installing-the-indoor-unit">2. Installing the Indoor Unit</h2>First, hang the indoor unit, set up the air ducting, and install the filter. Then, drill a hole through the wall for the refrigerant piping and condensate drain hose. Finally, attach the condensate drain hose to direct water away from the unit.<ul><li style="font-size: 16px;">Follow these <a href="https://help.pioneerminisplit.com/en-US/install-ryb-hang-idu-5957139" target="_blank" rel="noopener noreferrer">steps</a> on hanging the indoor unit.&#xA0;</li><li style="font-size: 16px;">Read this <a href="https://help.pioneerminisplit.com/en-US/install-ryb-air-duct-5972822" target="_blank" rel="noopener noreferrer">article</a> for information on installing the air ducting.&#xA0;</li><li style="font-size: 16px;">View this <a href="https://help.pioneerminisplit.com/en-US/install-ryb-filter-5973075" target="_blank" rel="noopener noreferrer">article</a> to learn how to install the filter for the indoor unit.&#xA0;</li><li style="font-size: 16px;">Follow these <a href="https://help.pioneerminisplit.com/en-US/install-ryb-drill-wall-hole-5973110" target="_blank" rel="noopener noreferrer">steps</a> on drilling the wall hole for the piping.&#xA0;</li><li style="font-size: 16px;" id="isPasted">Read this&#xA0;<a href="https://help.pioneerminisplit.com/en-US/install-ryb-drainline-5973115" target="_blank" rel="noopener noreferrer">article</a>&#xA0;to learn how to connect the condensate drain hose.&#xA0;</li></ul><h2 id="isPasted">3. Installing the Outdoor Unit</h2>Next, prepare the drain line for the outdoor unit, and then mount the unit.<ul><li style="font-size: 16px;">View this <a href="https://help.pioneerminisplit.com/en-US/install-odu-drain-joint-7268341" target="_blank" rel="noopener noreferrer">article</a> for information on installing the optional drain joint for the outdoor unit.</li><li style="font-size: 16px;">Read this <a href="https://help.pioneerminisplit.com/en-US/mount-odu-3659469" target="_blank" rel="noopener noreferrer">article</a> to learn about mounting the outdoor unit.&#xA0;</li><li style="font-size: 16px;">Follow these <a href="https://help.pioneerminisplit.com/en-US/install-odu-drain-hose-3660715" target="_blank" rel="noopener noreferrer">steps</a> on installing the drain hose for the outdoor unit.&#xA0;</li></ul><h2 id="4-connecting-the-refrigerant-pipes">4. Connecting the Refrigerant Pipes</h2>Once the indoor and outdoor units are installed, connect the refrigerant pipes.&#xA0;<ul><li style="font-size: 16px;">Read this <a href="https://help.pioneerminisplit.com/en-US/install-refrigerant-piping-7446344" target="_blank" rel="noopener noreferrer">article</a> for information on connecting the refrigerant pipes.&#xA0;</li></ul><h2 id="isPasted">5. Connecting the Communication Cable</h2>Connect the communication cable for the system, starting with the outdoor unit wires followed by the indoor unit wires.&#xA0;The 4-lead communication cable provides two power supply wires, one signal wire, and ground wire. The wires are individually insulated and bundled together inside the outer protective jacket. These wires are also pre-fitted with U-lugs on their ends.&#xA0;<ul><li style="font-size: 16px;">Read our <a href="https://help.pioneerminisplit.com/en-US/install-ryb-comm-cable-7454937" target="_blank" rel="noopener noreferrer">article</a> on how to connect the communication cable.</li></ul><h2 id="6-evacuating-the-refrigerant-circuit">6. Evacuating the Refrigerant Circuit</h2>Use a vacuum pump and manifold gauge to evacuate the refrigerant circuit, removing any non-condensable gas and moisture from the system.Qualified and well-trained personnel must complete the evacuation of the refrigerant circuit.&#xA0;<ul><li style="font-size: 16px;">Read this <a href="https://help.pioneerminisplit.com/en-US/evacuate-refrigerant-circuit-5741709" target="_blank" rel="noopener noreferrer">article</a> for instructions on evacuating the refrigerant circuit.&#xA0;</li></ul><h2 id="7-performing-a-test-run">7. Performing a Test Run</h2>Perform the test run after the entire system has been completely installed. Failure to perform the test run may result in unit damage, property damage, or personal injury.<ul><li style="font-size: 16px;" id="isPasted">Read this <a href="https://help.pioneerminisplit.com/en-US/install-test-run-3672815" target="_blank" rel="noopener noreferrer">article</a> for instructions on performing a test run.</li></ul>

Installing RYB-20 Ducted Ceiling Concealed Systems: Getting Started

Learn how to choose the correct installation sites for the Quantum Ultra Ducted Ceiling Concealed (RYB-20) indoor and outdoor units.

<h2 id="isPasted">Introduction</h2><span data-sfc-cp data-sfc-root="ep" data-sfc-cb data-complete="true" data-copy-service-computed-style="font-family: &quot;Google Sans&quot;, Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);" style=" text-decoration: none;" id="isPasted">Learn how to choose the correct installation sites for the <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer" id="isPasted">Quantum Ultra Ducted Ceiling Concealed (RYB-20)</a> indoor and outdoor units.Before starting, refer to the label on the product box to make sure that the model number of the indoor unit matches the model number of the outdoor unit.&#xA0;We recommend understanding the guidelines for selecting ideal locations for the indoor and outdoor units. The following are standards intended to help select appropriate locations for the units. &#xA0;<h2 id="indoor-unit">Indoor Unit</h2>Proper installation locations for the indoor unit must ensure the following standards:&#xA0;<ul><li style="font-size: 16px;">Sufficient space for installation and maintenance.&#xA0;</li><li style="font-size: 16px;">Sufficient space to connect the pipes and drainpipe.&#xA0;</li><li style="font-size: 16px;">No direct radiation from heaters.&#xA0;</li><li style="font-size: 16px;">The air inlet and outlet are not blocked.&#xA0;</li><li style="font-size: 16px;">The airflow can fill the entire room.&#xA0;</li><li style="font-size: 16px;">The ceiling is horizontal and its structure can sustain the indoor unit&apos;s weight.&#xA0;</li></ul>Do not install the indoor unit in the following locations:&#xA0;<ul><li style="font-size: 16px;">Areas with oil drilling or fracking.&#xA0;</li><li style="font-size: 16px;">Coastal areas with high salt content in the air.&#xA0;</li><li style="font-size: 16px;">Areas with caustic gases in the air, such as near hot springs.&#xA0;</li><li style="font-size: 16px;">Areas that experience power fluctuations, such as factories.&#xA0;</li><li style="font-size: 16px;">Enclosed spaces, such as cabinets.&#xA0;</li><li style="font-size: 16px;">Kitchens that use natural gas.&#xA0;</li><li style="font-size: 16px;">Areas with strong electromagnetic waves.&#xA0;</li><li style="font-size: 16px;">Areas that store flammable materials or gas.&#xA0;</li><li style="font-size: 16px;">Rooms with high humidity, such as bathrooms or laundry rooms.&#xA0;</li></ul>Recommended distances between the mounted indoor unit:&#xA0;Ceiling-Mounted<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-18f61bca-da34-4a00-a382-4a7e4f8c0b26-ryb_ceilingmounted_idu_distance.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered">Wall-Mounted<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-ec3fd3c7-4df4-4429-8075-26c9ea380e9b-ryb20_wall_mounted_dimensions.png" style="width: 600px;" class="fr-fic fr-dib fr-bordered">Maintenance Space<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-5454ee82-c305-4098-b033-3d81308fc2c2-ryb20_service_space.png" style="width: 600px;" class="fr-fic fr-dib fr-bordered"><h2 id="outdoor-unit">Outdoor Unit</h2>Proper installation locations for the outdoor unit must ensure the following standards:&#xA0;<ul><li style="font-size: 16px;">The installation&apos;s spatial requirements shown in the illustration are met.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071515-bcf5c1f9-7038-425b-9601-097dc69f6abf-wyt17_odu_install_diagram.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li><li style="font-size: 16px;">The location is solid enough to support the unit and prevent vibration.</li><li style="font-size: 16px;">Sufficient air circulation and ventilation.&#xA0;</li><li style="font-size: 16px;">Noise from the unit will not disturb other people.&#xA0;</li><li style="font-size: 16px;">The location is protected against prolonged exposure to direct sunlight or precipitation.&#xA0;</li><li style="font-size: 16px;">The location is protected against ice buildup and coil damage during snowfall.&#xA0;</li></ul>Do not install the indoor unit in the following locations:&#xA0;<ul><li style="font-size: 16px;">Near an obstacle that will block air inlets and outlets.&#xA0;</li><li style="font-size: 16px;">Near public streets, crowded areas, or places where noise from the unit will disturb others.&#xA0;</li><li style="font-size: 16px;">Near animals or plants that will be harmed by hot air discharge.&#xA0;</li><li style="font-size: 16px;">Near any source of combustible gas.&#xA0;</li><li style="font-size: 16px;">A location that is exposed to large amounts of dust.&#xA0;</li><li>A location exposed to an excessive amount of salty air.&#xA0;</li></ul>Special considerations for extreme weather:&#xA0;<ul><li style="font-size: 16px;">If the outdoor unit is exposed to strong wind: Install the unit so that the air outlet fan is at a 90-degree angle to the wind direction. If necessary, build a barrier in front of the unit to protect it from extremely strong winds.&#xA0;</li><li style="font-size: 16px;">If the outdoor unit is frequently exposed to heavy rain or snow: Build a shelter above the unit to protect it from rain or snow, ensuring the airflow is not obstructed.&#xA0;</li><li style="font-size: 16px;">If the outdoor unit is frequently exposed to salty air (seaside): Use an outdoor unit specifically designed for corrosion resistance.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071515-ea98ec74-0566-4a65-a803-19ea82cac716-wyt17_odu_install_extreme_weather.png" style="width: 800px;" class="fr-fic fr-bordered fr-dib"></li></ul>

Selecting the Installation Locations for RYB-20 Ducted Ceiling Concealed Systems

Follow these steps to properly hang the indoor unit for the Quantum Ultra Ducted Ceiling Concealed (RYB-20) system.

<h2 id="isPasted">Introduction</h2>Follow these steps to properly hang the indoor unit for the <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer" id="isPasted">Quantum Ultra Ducted Ceiling Concealed (RYB-20) system</a>.&#xA0;<h2 id="steps">Steps</h2>1. Install the indoor unit&apos;s main body. Refer to the following diagrams to locate the four positioning screw holes on the ceiling and follow the guidelines for installing the ceiling bolt. Be sure to mark the locations for drilling the ceiling hook holes.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-3a67cda2-7758-469d-a1e4-e74f5f88f95b-ryb_inlet_outlet_dimensions.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"><table style="width: 100%;"><tbody><tr><td style="width: 100%; background-color: rgb(239, 239, 239); text-align: center;" colspan="4" class="fr-thick">Outline Dimensions</td></tr><tr><td style="width: 25%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">A</td><td style="width: 25%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">B</td><td style="width: 25%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">C</td><td style="width: 25%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">D</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">3-ft, 11-1/4-in</td><td style="width: 25%; text-align: center;" class="fr-thick">11-3/4 in</td><td style="width: 25%; text-align: center;" class="fr-thick">2-ft, 5-1/2-in</td><td style="width: 25%; text-align: center;" class="fr-thick">2-ft, 7-1/4-in</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">1,200 mm</td><td style="width: 25%; text-align: center;" class="fr-thick">300 mm</td><td style="width: 25%; text-align: center;" class="fr-thick">750 mm</td><td style="width: 25%; text-align: center;" class="fr-thick">795 mm</td></tr></tbody></table> <table style="width: 100%;"><tbody><tr><td style="width: 33.3821%; background-color: rgb(239, 239, 239); text-align: center;" colspan="2" class="fr-thick">Air Outlet Opening Size</td><td style="width: 33.3821%; background-color: rgb(239, 239, 239); text-align: center;" colspan="2" class="fr-thick">Air Return Opening Size</td><td style="width: 33.3821%; background-color: rgb(239, 239, 239); text-align: center;" colspan="2" class="fr-thick">Mounted Lug Size</td></tr><tr><td style="width: 16.6667%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">E</td><td style="width: 16.6667%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">F</td><td style="width: 16.6667%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">G</td><td style="width: 16.6667%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">H</td><td style="width: 16.6667%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">I</td><td style="width: 16.6667%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick">J</td></tr><tr><td style="width: 16.6667%; text-align: center;" class="fr-thick">3-ft, 4-3/8-in</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">9-1/4 in</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">3-ft, 7-in</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">10-1/2 in</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">4-ft, 3/4-in</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">2-ft, 1-1/4-in</td></tr><tr><td style="width: 16.6667%; text-align: center;" class="fr-thick">1,027 mm</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">233 mm</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">1,092 mm</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">267 mm</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">1,240 mm</td><td style="width: 16.6667%; text-align: center;" class="fr-thick">640 mm</td></tr></tbody></table> Ceiling Bolt Installation GuidelinesFollow these guidelines for installing the ceiling bolt. Ensure the unit and hole are the same size before moving on.&#xA0;New Concrete BricksInlay or embed the screw bolts<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-b144564d-eda9-45ce-9c66-c5e1ae440223-ryb_ceilingbolt_installation_new_concrete_bricks.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered">Original Concrete BricksUse an embedding screw bolt, crock, and stick harness.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-dc479c6a-9b35-4e19-aeb2-bd3ba07983ef-ryb_ceilingbolt_installation_original_concrete_bricks.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered">Steel Roof Beam StructureInstall and use the supporting steel angle.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-9f09d7c4-7214-4939-b585-fda39c8bc12c-ryb_ceilingbolt_installation_steel_roof_beam.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered">WoodThe upper foam&apos;s mounting holes are used for auxiliary positioning bolts. If the foam is damaged, the spacing between the actual lifting lugs should the standard.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-1e278af3-155a-41c9-98f1-ede9793ddcaa-ryb_ceilingbolt_installation_wood_upper_foam.png" style="width: 500px;" class="fr-fic fr-bordered fr-dib">Place the wood mounting across the roof beam, then install the hanging screw bolts.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-2cb2c00c-31de-48fd-b72e-76e30b4eade4-ryb_ceilingbolt_installation_wood_roof_beam.png" style="width: 500px;" class="fr-fic fr-bordered fr-dib">2. Install and fit pipes and wires after finishing the main body installation. When choosing a starting point, first determine the direction of the pipes.&#xA0;3. Install the hanging screw bolts:&#xA0;a. Cut off the room beam.&#xA0;b. Strengthen the point at which the cut was made. Consolidate the roof beam.&#xA0;4. Prior to mounting the unit, ensure the refrigerant pipes, drainpipes, and indoor/outdoor lines are aligned with their respective connection points, particularly for ceiling-mounted applications.&#xA0;5. Drill four holes, 3-7/8 inches deep (100 mm), into the ceiling at the hook positions. Be sure to hold the drill at a 90-degree angle to the ceiling.&#xA0;6. Secure the bolt using the provided washers and nuts.&#xA0;7. Install the four suspension bolts.&#xA0;8. Mount the indoor unit. At least two people are required to lift and secure it safely. Insert the suspension bolts into the unit&apos;s hanging holes. Fasten them using the provided washers and nuts.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026050120-8d47b8da-7cff-4297-9222-d40c19da9a39-ryb_mount_idu_fasten_bolts.png" style="width: 200px;" class="fr-fic fr-dib fr-bordered">9. Use a level indicator to ensure the indoor unit flat, preventing potential leaks. Confirm the minimum drain title is 1/100 or more.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-a9ccf871-c372-4000-9ac3-70ed9444c855-ryb20_hang_idu_screw_bolt.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"> <h2 id="wall-mounted-installations">Wall-Mounted Installations</h2>This unit supports wall-mounted installations. If the unit requires vertical mounting, follow these steps:&#xA0;1. Remove the electrical control box, then unplug the drain pump and water level switch terminals from the main control board.&#xA0;2. Disassemble the pump components.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-3a948ef1-27f8-457a-95db-290d5358b9ca-ryb20_wall_mounted_installations_pump_components.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered">3. Remove the four screws, then remove the water components by 90-degrees. Attach the screws to the water pump mounting plate again.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-f6fd79c4-dc4c-4066-9395-01fc892a27d7-ryb20_wall_mounted_installations_90.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered">4. Install the pump parts to the machine and connect the wiring set.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-0f5248bd-ae67-4b69-a817-c3a8b1a1c2c7-ryb20_wall_mounted_installations_pump_parts.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered">

Hanging the Indoor Unit for RYB-20 Ducted Ceiling Concealed Systems

Learn how to install the air duct for the Quantum Ultra Ducted Ceiling Concealed (RYB-20) system.

<h2 id="introduction">Introduction</h2>Learn how to install the air duct for the <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer" id="isPasted">Quantum Ultra Ducted Ceiling Concealed (RYB-20) system</a>.<h2 id="isPasted">Caution</h2>Ensure that no part of the human body touches any internal components of the equipment after installation.&#xA0;<h2 id="notes">Notes</h2><ul><li style="font-size: 16px;">The length of the air duct must be at least 3-feet, 3-3/8-inches (1 m) long. Attach the air inlet and outlet using the screws.&#xA0;</li><li style="font-size: 16px;">Install a grille with the air duct inlet and secure it using screws.&#xA0;</li><li style="font-size: 16px;">Do not place the connecting duct&apos;s weight on the indoor unit.&#xA0;</li><li style="font-size: 16px;">When connecting the duct, use a nonflammable canvas tie-in to prevent vibration.&#xA0;</li><li style="font-size: 16px;">Wrap the insulation foam around the exterior of the duct to prevent condensation. If the end-user requires noise reduction, add an internal duct underlayer.&#xA0;</li><li style="font-size: 16px;">When the machine is wall-mounted, it should be concealed mounted and the air inlet and outlet should be installed with a grille. Attach the grille firmly with the screws.&#xA0;</li></ul><h2 id="steps">Steps</h2>1. Install the filter according to the air inlet&apos;s size.&#xA0;2. Install the canvas tie-in between the body and duct.&#xA0;3. The air inlet and outlet ducts must be sufficiently spaced to prevent an air passage short-circuit.&#xA0;4. Connect the duct according to the following diagrams:&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-52d8bc9a-ae2a-456b-9984-5ac5a421f5ae-ryb20_duct_installation_ceiling_mounted.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-ce6a3a03-9c55-468b-bd97-1eac4e3013dc-ryb20_duct_installation_wall_mounted.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered">Fresh Air Duct Installation<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-68d10735-2a98-4670-b964-c15863584822-ryb20_fresh_air_duct_installation.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered">

Installing the Air Duct for RYB-20 Ducted Ceiling Concealed Systems

Follow these steps to install the filter for the Quantum Ultra Ducted Ceiling Concealed (RYB-20) system.

<h2 id="introduction">Introduction</h2>Follow these steps to install the filter for the <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer" id="isPasted">Quantum Ultra Ducted Ceiling Concealed (RYB-20) system</a>.&#xA0;<h2 id="note">Note</h2><ul><li style="font-size: 16px;">All the figures in this article are for demonstration purposes only. The air conditioner you have purchased may be slightly different in design, though similar in shape. </li></ul><h2 id="steps">Steps</h2>1. The duct is set to rear return air by default, and can be modified to bottom return air as needed. Remove the ventilation panel, flange, and air filter.&#xA0;2. Change the mounting positions of the ventilation panel and air return flange.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-f812bf27-65fa-40e4-bfc9-671ef9f95874-ryb_filter_installation.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered">3. When installing the filter mesh, fit it into the flange as illustrated.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-e11428b3-d636-4ead-9162-5c6193aaa044-ryb_filter_installation_mesh.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered">

Installing the Filter for RYB-20 Ducted Ceiling Concealed Systems

Learn how to drill the wall hole for the Quantum Ultra Ducted Ceiling Concealed (RYB-20) piping

<h2 id="isPasted">Introduction</h2>Learn how to drill the wall hole for the <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer" id="isPasted">Quantum Ultra Ducted Ceiling Concealed (RYB-20)</a> piping.The hole being drilled in the wall is intended for the drainage and refrigerant piping. When drilling the wall hole, ensure to avoid wires, plumbing, and other sensitive components.&#xA0;<h2 id="steps">Steps</h2>1. Determine the wall hole&apos;s location based on the intended position of the outdoor unit.&#xA0;2. Drill a hole through the wall using a 2-1/2 (63.5 mm) or 3-1/2 inch (90 mm) core drill. Make sure the hole is angled slightly downward so that the exterior opening is 1/2 inch (12 mm) lower than the interior opening. This slope ensures proper water drainage.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-c0f30720-2590-4535-ad05-b9d95f0a4461-cyb20_drill_wall_hole.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered">3. Insert the protective wall cuff into the hole. This protects the edges of the hole and helps create a seal during the final installation steps.&#xA0;

Drilling the Piping Wall Hole for RYB-20 Ducted Ceiling Concealed Systems

Follow this procedure to install the condensate drain hose for the Quantum Ultra Ducted Ceiling Concealed (RYB-20) system.

<h2 id="isPasted">Introduction</h2>Follow this procedure to install the condensate drain hose for the <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer" id="isPasted">Quantum Ultra Ducted Ceiling Concealed (RYB-20) system</a>.&#xA0;The condensate drain hose, also called a drain line, directs water away from the unit. Improper installation may cause property damage.<h2 id="prerequisites">Prerequisites</h2>Caution<ul><li style="font-size: 16px;" id="isPasted">Ensure the drain line installation complies with all local and national codes and regulations.</li><li style="font-size: 16px;">Verify that the drain line is insulated to prevent condensation and potential water damage. If it is not, insulate it properly.</li><li style="font-size: 16px;">If the drain line is bent or installed incorrectly, water may leak and cause a water-level switch malfunction.</li><li style="font-size: 16px;">Do not pull the drain hose forcefully. This could disconnect it.</li></ul>Installation Notes<ul><li style="font-size: 16px;" id="isPasted">When using an extended drain line, tighten the indoor connection with an additional protection tube to prevent accidental disconnection.&#xA0;</li><li style="font-size: 16px;">The drain line should slope downward at a gradient of at least 1/100 to prevent water from flowing back into the air conditioner.&#xA0;</li><li style="font-size: 16px;">If the drain line outlet is higher than the pump joint, install a lift pipe for the indoor unit&apos;s exhaust outlet. Do not install the lift pipe higher than 2-feet, 5-1/2-inches (750 mm) from the ceiling board. The distance between the unit and lift pipe must be less than 11-3/4 inches (300 mm). Improper installation may result in water backflow, potentially flooding the unit.</li><li style="font-size: 16px;">To prevent air bubbles, keep the drain hose level or slightly titled up by 3 inches (less than 75 mm).</li><li style="font-size: 16px;">Installation requires a polyethylene tube (exterior diameter = 1 in / 25 mm), which can be obtained at a local hardware store or dealer.&#xA0;</li></ul><h2 id="a-planning-the-drain-line-layout">A. Planning the Drain Line Layout</h2>Before beginning the installation, plan the drain line layout and connection.&#xA0;<h2 id="b-cutting-the-drain-line-if-needed">B. Cutting the Drain Line (If Needed)</h2>If necessary, cut the drain line to fit your layout and connection.&#xA0;<h2 id="isPasted">C. Insulating the Drain Line (If Needed)</h2>Verify that the drain line is insulated to prevent condensation and potential water damage. If it is not, insulate it properly. Insufficient insulation may allow dew to form due to low condensate temperatures, resulting in potential water damage.Insulate the drain line before beginning the connection, excluding the joint sections. These will be insulated at the end of the procedure.&#xA0;Ensure the insulation material is fitted tightly with no gaps. Do not over-tighten the insulation material. This may compress the air out of the material, causing poor insulation and early aging.The insulation material must be made of flame-retardant material. Select a material that complies with local regulations.&#xA0;The thickness of the insulation material must be more than 3/8 of an inch (10 mm).&#xA0;Apply specialized adhesive to the insulation seams, then secure them with tape. Ensure the tape is at least 2 inches (51 mm) wide and applied firmly to prevent condensation.&#xA0;<h2 id="d-connecting-the-drain-hose">D. Connecting the Drain Hose</h2>Attach the drain hose to the indoor unit&apos;s drain line connection.&#xA0;Unlike wall-mounted systems, ducted ceiling concealed units and other light commercial air conditioning systems require a PVC drain line. The flexible drain hoses are not suitable for these applications.&#xA0;Use a rubber coupler to connect the drain hose to the PVC drain line, ensuring a secure, water-tight seal. The rubber coupler and PVC drain line are sold separately from the system.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026042213-4e973842-7d26-4e9d-a826-d4a71f57ad0d-cyt24_drain_hose_rubber_coupler.png" style="width: 150px;" class="fr-fic fr-bordered fr-dib">This is how the drain line assembly should look when attached to the PVC line with the rubber coupler.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026042213-a7d2ad10-a90c-44de-aa61-7ab81532c7d4-cyt24_drainpipe_assembly.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered">Install the drain line assembly as illustrated:&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-66a72407-0bfe-49ea-aeca-9fe95f020106-ryb_drainpipe_installation_diagram.png" style="width: 500px;" class="fr-fic fr-bordered fr-dib">These units operate with a negative pressure at the drain connections, meaning a drain trap is required. The trap needs to be installed as close to the unit as possible. Make sure the top of the trap is below the connection to the drain pan, allowing complete drainage of the pan.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-c41c2cc7-1b52-4daf-943c-b2144506d02c-ryb_drainpipe_installation_ceilingmounted.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered">Install the drain line with a pump as illustrated:&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-77d0da9f-a33b-491f-b01f-b8027761bb37-ryb_drainpipe_installation_pump.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"><ul><li style="font-size: 16px;">a: Metal clamp (accessory)</li><li style="font-size: 16px;">b: Drain hose (accessory)</li><li style="font-size: 16px;">c: Rising drain piping - vinyl pipe with a nominal diameter of 1 inch/25 mm and outer diameter of 1-1/4 inches/32 mm (field supply)&#xA0;</li><li style="font-size: 16px;">d: Hanging bars (field supply)</li></ul>When connecting multiple drain hoses, install them as illustrated:&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026050417-ced8d727-801c-4199-8f96-a831d705c747-ryb_drainpipe_installation_pump_multiple.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"><h2 id="e-passing-the-drain-line-through-the-wall-hole">E. Passing the Drain Line Through the Wall Hole</h2>When passing the drain line through the wall hole, make sure the water drains to a safe location where it will not cause water damage or a slipping hazard.The drain line outlet should be at least 1-7/8 inches (50 mm) above the ground. If it touches the ground, the unit may become blocked, potentially leading to a malfunction.&#xA0;If the water is discharged directly into the sewer, ensure the drain has a U or S pipe to prevent odors from coming back into the house.&#xA0;<h2 id="f-completing-a-drainage-test">F. Completing a Drainage Test</h2>For information on completing a drainage test for ducted ceiling concealed systems, click this <a href="https://help.pioneerminisplit.com/en-US/install-drainage-test-ducted-ceiling-concealed-5975169" target="_blank" rel="noopener noreferrer">link</a>. New buildings should perform this test before finishing the ceiling.&#xA0;<h2 id="g-insulating-the-joint-sections">G. Insulating the Joint Sections</h2>The pipe joint insulation should 2-4 inches (51-102 mm) longer than the gap to ensure a proper seal.&#xA0;Insert the pipe joint insulation into the gap of the existing insulation.&#xA0;Ensure the pipe joint insulation is securely fastened to the suction and liquid pipes to prevent gaps. Use glue to paste together the linking part. Do not over-tighten the insulation material. This may compress the air out of the material, causing poor insulation and early aging.&#xA0;

Installing the Condensate Drain Hose for RYB-20 Ducted Ceiling Concealed Systems

Learn how to connect the communication cable for Ducted Ceiling Concealed systems.

<h2 id="isPasted">Introduction</h2>Learn how to connect the communication cable for <a href="https://www.pioneerminisplit.com/collections/types?q=RYB-20" target="_blank" rel="noopener noreferrer">Quantum Ultra Ducted Ceiling Concealed (RYB-20) systems</a>.&#xA0;Connect the communication cable for the system, starting with the outdoor unit wires followed by the indoor unit wires.&#xA0;The 4-lead communication cable provides two power supply wires, one signal wire, and ground wire. The wires are individually insulated and bundled together inside the outer protective jacket. These wires are also pre-fitted with U-lugs on their ends.&#xA0;Communication Cable Specifications (All Models): AWG #16 x 4 Core TC-ER cable.<h2 id="isPasted">Notes</h2>General Warnings<ul><li style="font-size: 16px;">All wiring must comply with local and national electrical codes and regulations. A licensed electrician must install all the wiring.</li><li style="font-size: 16px;">When connecting the communication cable consult the nameplate on the system for detailed electrical specifications.</li><li style="font-size: 16px;">All electrical connections must be made according to the electrical connection diagrams located on the panels of the indoor and outdoor units.</li></ul>Power Warnings<ul><li style="font-size: 16px;">The power voltage must be within 90-110% of the rated voltage. Insufficient power supply can cause a malfunction, electrical shock, or fire.</li><li style="font-size: 16px;">Only connect the unit to an individual branch circuit. Do not connect other equipment to the same power circuit.</li><li style="font-size: 16px;">If there is a serious safety issue with the power supply, stop work immediately. Explain the reasoning to the client and refuse to continue the installation until the safety issue is properly resolved.</li></ul>Wiring Warnings<ul><li style="font-size: 16px;">Firmly connect every wire. Loose wiring can cause the terminal to overheat, resulting in product malfunction and possible fire.</li><li style="font-size: 16px;">Keep the wiring away from the copper tube, as the refrigerant circuit can become extremely hot.</li><li style="font-size: 16px;">Do not let wires touch or rest against the refrigerant tubing, compressor, or any moving parts.</li><li style="font-size: 16px;">Do not cross the electrical wiring with the signal wiring. This may cause distortion, interference, or possibly damage the circuit boards.</li><li style="font-size: 16px;">Do not house wires of different voltages within the same wire tube. Avoid using metal wire tubes in environments prone to acid or alkali corrosion; use plastic wire tubes instead.</li><li style="font-size: 16px;">Do not place wire connect joints inside the tubing. If a wire connect joint is necessary, use a connection box at the point of the joint.</li></ul>Prerequisites<ul><li style="font-size: 16px;">Turn off the main power to the system. After powering off the system, wait 10 minutes or more before touching the electrical components in order to avoid electrical shock.&#xA0;</li><li style="font-size: 16px;">Properly ground the system. &#xA0;</li><li style="font-size: 16px;">If the unit has an auxiliary electric heater, install it at least 3-feet, 3-3/8-inches (1 m) away from any combustible materials.&#xA0;</li><li style="font-size: 16px;">Install an external surge suppressor at the outdoor disconnect (recommended).&#xA0;</li><li style="font-size: 16px;">If connecting power to fixed wiring, incorporate a current leakage protection switch or circuit breaker that disconnects all poles with a contact separation of at least 1/8 of an inch (3 mm). Use only an approved switch or circuit breaker.</li><li style="font-size: 16px;">Service Disconnect:&#xA0;When the air conditioner&apos;s maximum current is more than 16A, use a service disconnect or leakage protection switch with a protective device (purchase separately). When the air conditioner&apos;s maximum current is less than 16A, equip the power cord of the air conditioner with a plug (purchase separately).&#xA0; Select the service disconnect as required by local, regional, and national codes. In North America, wire the appliance according to NEC and CEC requirements.&#xA0; The cograph is for explanation purposes only. The machine may be slightly different. The actual shape shall prevail.&#xA0;</li></ul><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071415-8843ae75-f67f-46a0-9693-cc7b22483841-cyb20_service_disconnect.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"><h2 id="electrical-specifications">Electrical Specifications</h2>230V SystemsThe 230V systems require a double-pole breaker. The tandem type will not work.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071413-7a4e17f5-b19f-4ecc-b0ef-e2571a46640e-double_pole_breaker.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071413-6ce9c658-aa13-4bc7-8eab-58066a6292e0-wiring_diagram_230v.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"><h2 id="steps">Steps</h2>Outdoor Unit Wiring1. Remove the two screws attached on the front and side panels, then detach the panel to access the wire connections (Outdoor Unit A).&#xA0;Unscrew the electrical wiring cover and remove it (Outdoor Unit B).&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026041719-6f68d645-9a14-4fb9-b637-386d2da603d2-cyb20_odu_wiring_screws.png" style="width: 400px;" class="fr-fic fr-bordered fr-dib">2. Connect the U-lugs to the terminals, matching the wire colors or labels with those on the terminal block. Firmly screw each U-lug to its corresponding terminal. Strictly follow the wiring diagram inside the electrical box cover when connecting the wires.&#xA0;Select different colors for different wires according to relevant regulations. Ensure the wire colors for the wire colors for the outdoor unit and terminals match those used for the indoor unit.&#xA0;Do not connect the power wire to the signal wire terminal. If the power and signal wires run parallel, place the wires in their own wire tube and maintain a gap of at least 11-3/4 inches (300 mm).&#xA0;3. Secure the cable with the clamp. Ensure it is tight and does not pull on the U-lugs.4. Reattach the panel or cover.&#xA0;Indoor Unit Wiring1. Remove the electronic control box&apos;s cover on the indoor unit.&#xA0;2. Connect the U-lugs to the terminals, matching the wire colors or labels with those on the terminal block. Firmly screw each U-lug to its corresponding terminal. Strictly follow the wiring diagram inside the electrical box cover when connecting the wires.&#xA0;Select different colors for different wires according to relevant regulations. Ensure the wire colors for the wire colors for the outdoor unit and terminals match those used for the indoor unit.&#xA0;Do not connect the power wire to the signal wire terminal. If the power and signal wires run parallel, place the wires in their own wire tube and maintain a gap of at least 11-3/4 inches (300 mm).&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-29757735-c8ee-4d27-be60-3db7b564546c-ryb_electrical_wiring_idu.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered">Magnetic Ring (if supplied with the accessories): Pass the belt through the magnetic ring&apos;s hole to attach it to the cable.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-22e8713c-f396-4d27-9472-0050426c1e45-ryb_magnetic_ring.png" style="width: 500px;" class="fr-fic fr-bordered fr-dib">3. Secure the cable with the clamp. Ensure it is tight and does not pull on the U-lugs.4. Pass the cable through the knock-down hole on the electric control box.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-efd7c354-d722-4e98-8507-658d33eaf7a7-ryb_electrical_wiring_idu_knockdown_hole.png" style="width: 600px;" class="fr-fic fr-dib fr-bordered">5. Reattach the electrical control box&apos;s cover. If the indoor unit is equipped with a display box, it needs to be installed in the electric control box.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-2918a36f-890b-4e6e-ac9e-f3be13f3cf16-ryb_electrical_wiring_control_box.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"><h2 id="electric-auxiliary-heat-module-installation">Electric Auxiliary Heat Module Installation</h2>1. Install the supporter in the electric control box.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-58a833c1-7fc4-4f5b-ab59-52f5ce015cc5-ryb_electric_auxiliary_heat_module_supporter.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered">2. Install the converter control board to the supporter.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-c763b8b7-37e7-4a7f-a921-19d2d8eabf03-ryb_electric_auxiliary_heat_module_converter_control_board.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered">3. Connect the wire from the converter board to main board CN40.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026071417-7855cc74-7292-4cd2-94be-dcd4b4110d8b-ryb_electric_auxiliary_heat_module_main_board.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered">

Connecting the Communication Cable for RYB-20 Ducted Ceiling Concealed Systems

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Understand the Front Panel Display for Wall-Mounted Systems

Understand the Master Unit Display for ECOasis 50 Energy Recovery Ventilators

Understand the Onboard Controller & Terminal Block Layout for QHD070 Whole-House Ducted Dehumidifiers