This article explains how to install the decorative panel for Quantum Ultra Ceiling Cassette systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to install the decorative panel for <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><p>The steps for installing the decorative panel for the 9,500-16,000 BTU systems are slightly different than the steps for the 23,000 BTU systems.&#xA0;</p><p>After completing the installation of the decorative panel, follow the steps for wiring the panel and indoor unit.&#xA0;</p><h2 id="steps-for-95k-16k-btu-systems"><u>Steps for 9.5K-16K BTU Systems</u></h2><p><strong>Model Numbers</strong></p><p><a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette/products/pioneer-quantum-ultra-9-000-btu-23-seer2-230v-ceiling-cassette-ductless-mini-split-air-conditioner-inverter-heat-pump-full-set" target="_blank" rel="noopener noreferrer">CYT009GLSI24RL</a>, <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette/products/pioneer-quantum-ultra-12-000-btu-22-seer2-230v-ceiling-cassette-ductless-mini-split-air-conditioner-inverter-heat-pump-full-set" target="_blank" rel="noopener noreferrer">CYT012GLSI24RL</a>, and <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette/products/pioneer-quantum-ultra-18-000-btu-20-5-seer2-230v-ceiling-cassette-ductless-mini-split-air-conditioner-inverter-heat-pump-full-set" target="_blank" rel="noopener noreferrer">CYT018GLSI24RL</a></p><p><strong>Remove the Return Air Grille</strong></p><ol><li>Rotate the two grille fasteners to the Open position.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120814-eb284f65-8268-43ff-b82b-02931dc31c88-cyt24_install_decorative_panel_open_position.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></li><li>Loosen the screws and carefully remove the ventilation grille. The grille will remain suspended from the panel by the attached safety cords.&#xA0;</li></ol><p><strong>Install the Panel</strong></p><ol><li>Use four washers and bolts to secure the panel to the ceiling base at the designated installation bolt holes.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120814-9041e578-048e-4b44-b24f-2e96db2510d4-cyt24_install_decorative_panel_installation_bolt_holes.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Hang the two safety cables from the panel onto the provided panel hooks for support during installation.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120814-75db8d7f-ae99-4baa-a54b-332aa2b22882-cyt24_install_decorative_panel_panel_hooks.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Reinstall the ventilation grille by aligning it correctly, tightening the screw, and snapping it securely back into place.&#xA0;</li></ol><h2 id="steps-for-23k-btu-systems"><u>Steps for 23K BTU Systems</u></h2><p><strong>Model Numbers</strong></p><p><a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette/products/pioneer-quantum-ultra-24-000-btu-22-5-seer2-230v-ceiling-cassette-ductless-mini-split-air-conditioner-inverter-heat-pump-full-set" target="_blank" rel="noopener noreferrer">CYT024GLSI24RL</a></p><p id="isPasted"><strong>Remove the Return Air Grille</strong></p><ol><li>Rotate the two grille fasteners to the Open position.&#xA0;</li><li>Loosen the screws and carefully remove the ventilation grille. The grille will remain suspended from the panel by the attached safety cords.&#xA0;</li></ol><p><strong>Remove the Installation Caps</strong></p><ol><li>Remove the four installation caps located at each corner of the panel to expose the clamp mounting points.&#xA0;</li></ol><p><strong>Install the Panel</strong></p><ol><li>Insert the four clamps into the hooks on the panel.&#xA0;</li><li>Tighten the four bolts to securely fasten the clamps and secure the panel to the ceiling base.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120814-39f53fa4-2f17-4942-82fe-ec9e9a845f9d-cyt24_install_decorative_panel_tighten_bolts.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Reattach the four installation caps to their original positions at each corner of the panel.&#xA0;</li><li>Attach the panel&apos;s hanging rope (safety cord) onto the fixed bracket to prevent accidental detachment.&#xA0;</li></ol><h2 id="wire-the-decorative-panel--indoor-unit"><u>Wire the Decorative Panel &amp; Indoor Unit</u></h2><p><strong>Connect the Signal Cable</strong></p><p>There are three terminals (1, 2, 3) and ground (G). Color selection does not matter as much as matching number to number does. Consult the diagram affixed to the indoor and outdoor units respectively for specific wiring instructions. The simplified wiring diagram is included to the right on the unit. Do not mix up the wires between each ends.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120814-d1aa3beb-599e-4cf3-9303-56dd0de58ee1-cyt24_simplified_wiring_diagram.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></p><p><strong>Wire the Panel</strong></p><p>The panel&apos;s LED display board and louver swing motor are wired to the indoor unit main control board via 10-pin and 5-pin wires.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120814-d7eac9e4-cb8c-4dd7-b39a-6bc94b8da945-cyt24_install_decorative_panel_wiring.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></p><p>For information on cable wiring specifications for Quantum Ultra Ceiling Cassette systems, click this <a href="https://help.pioneerminisplit.com/en-US/quantum-ultra-ceiling-cassette-cable-wire-specifications-3635991" target="_blank" rel="noopener noreferrer">link</a>.&#xA0;</p>

Install the Decorative Panel for Quantum Ultra Ceiling Cassette (CYT-24) Systems

This article explains how to open the ceiling and install the hanging hook for Quantum Ultra Ceiling Cassette (CYT-24) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to prepare the ceiling as well as install the hanging hook for <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><p>Installation methods may vary depending on the structure of the ceiling.&#xA0;</p><h2 id="prepare-the-ceiling"><u>Prepare the Ceiling</u></h2><p>Ensure that the ceiling can support the weight of the unit. Consult a qualified professional for structural evaluations and specific guidance.&#xA0;</p><p>After cutting the ceiling opening, confirm that the ceiling is level and structurally reinforced to prevent vibration. For ceilings with wooden joists, use an angle iron or Unistrut channels. Cut and remove any obstructing beams within the area of the ceiling opening.&#xA0;</p><p>Reinforce the surrounding structure to compensate for the removed beams and support the weight of the unit. It may be necessary to add extra support.&#xA0;</p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120519-2e935081-9db6-432c-b870-f5f993aa70dd-cyt24_ceiling_opening.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></p><h2 id="install-the-hanging-bolt"><u>Install the Hanging Bolt</u></h2><p>Use four &#x215C;-inch threaded hanging bolts as well as eight washers and nuts to suspend the indoor unit. The hanging bolts are not included with the system.&#xA0;</p><p>The center-to-center distance between the bolts must match the specifications provided for the unit size.&#xA0;</p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120519-3b53ea3f-a195-4177-915a-0b3658efb273-cyt24_hanging_bolt_installation.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></p><h2 id="ceiling-structure-mounting-methods"><u>Ceiling Structure Mounting Methods</u></h2><p><strong>Finished Concrete (Brick or Slab)</strong></p><ul><li>Use expansion bolts to fix the hanging hooks directly into the concrete.&#xA0;</li><li>Drill a hole to a depth of 1.8-2.2 inches (45-50 mm) to ensure proper anchoring.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120519-9acdda98-ea43-402f-896f-b74a8d546465-cyt24_mounting_methods_finished_concrete.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul><p><strong><strong id="isPasted">New Concrete Bricks</strong></strong></p><ul><li>Use one of the following methods to embed the screw bolts:&#xA0;<ul><li>Blade-type insertion</li><li>Slide-in channel insertion</li></ul></li><li>Make sure that the screw bolts are anchored firmly into the embedded steel reinforcements bars.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120519-b5e217b3-6454-4962-a330-aef43ae7bbcc-cyt24_mounting_methods_new_concrete_bricks.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul><p><strong>Steel Roof Beam Structure</strong></p><ul><li>Install supporting angle steel brackets.&#xA0;</li><li>Mount the hanging bolts through the brackets and secure them as shown below:<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120519-7d5d335b-06d0-4499-af41-ff648fed8625-cyt24_mounting_methods_steel_roof_beam.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul><p><strong><strong id="isPasted">Wooden Construction</strong></strong></p><ul><li>Secure the angle iron across the wooden joints.&#xA0;</li><li>Secure the hanging screw bolts through the channel and into the ceiling structure below.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120519-853cb164-a68a-4f64-aefc-2085f0b66493-cyt24_mounting_methods_wooden_construction.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul>

Prepare the Ceiling & Install the Hanging Hook for Quantum Ultra Ceiling Cassette (CYT-24) Systems

This article explains how to select the indoor unit installation location for Quantum Ultra Ceiling Cassette 
(CYT-24) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to select the installation location for indoor units of <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><h2 id="select-the-location"><u>Select the Location</u></h2><p>Follow the tolerances depicted in the illustration below:</p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120214-d0814135-f521-4071-bcaa-b74b4ab2adf1-cyt24_indoor_unit_installation_location.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></p><p>Position the air handler in the center of the area intended to be air conditioned, ensuring the best air distribution.&#xA0;</p><p>Follow these site selection guidelines when installing the indoor unit to prevent malfunction, damage, or hazardous conditions:</p><p><strong>Do Not:&#xA0;</strong></p><ul><li>Install the unit in areas where flammable gases may accumulate (e.g., fuel storage areas, chemical plants).&#xA0;</li><li>Install the system in coastal or seaside locations with salty air exposure (unless the system is specifically treated for corrosion resistance).&#xA0;</li><li>Install the unit in environments containing caustic gases, such as sulfur compounds near hot springs or industrial zones.&#xA0;</li><li>Mount the unit on surfaces that cannot support its full operational weight, such as weak ceilings or unstable walls.&#xA0;</li><li>Install the unit in kitchens or areas heavily exposed to oil fumes, vapors, or grease accumulation.&#xA0;</li><li>Install the unit in areas subject to strong electromagnetic interference, such as near factories, radio transmitters, and heavy-duty electrical equipment.&#xA0;</li><li>Install the unit near sources or acidic or alkaline vapors, including industrial cleaners or chemical discharge zones.&#xA0;</li><li>Install the system in tightly enclosed spaces with inadequate ventilation, which may restrict airflow and service access.&#xA0;</li><li>Install the system in high-humidity spaces, such as laundry rooms or bathrooms without sufficient moisture control.&#xA0;</li><li>Neglect proper electrical insulation for the air conditioner-building wiring. Installation must comply with national electrical safety standards.&#xA0;</li></ul><p><strong>Do:</strong></p><ul><li>Select a location protected from direct sunlight to prevent heat buildup and maintain cooling performance.&#xA0;</li><li>Verify that the structural ceiling or wall can support the unit&apos;s weight under its full operational load.&#xA0;</li><li>Choose an installation site with a short, direct path for the condensation drain. Make sure to comply with local building codes.</li><li>Ensure there is adequate clearance around the unit to facilitate proper airflow, operation, and maintenance access.&#xA0;</li><li>Position the unit more than 3 feet (1 m) away from antennas, power lines, telephones, security systems, and other sources of electrical and radio interference.&#xA0;</li><li>Educate the user on proper operation and maintenance procedures, including filter cleaning, basic troubleshooting, and using the provided user manual.&#xA0;</li></ul>

Select the Indoor Unit Installation Location for Quantum Ultra Ceiling Cassette (CYT-24) Systems

This article explains how to set up the indoor unit condensate piping connections for Quantum Ultra Ceiling Cassette (CYT-24) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to set up the indoor unit condensate piping connections for <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><h2 id="isPasted"><u>Drainpipe &amp; Insulation Material Requirements</u></h2><ul><li><strong>Drainpipe:&#xA0;</strong>Polyvinyl chloride (PVC) pipe with an 1-&#xBC;-inch outer diameter (32 mm).&#xA0;</li><li><strong>Heat Insulation:&#xA0;</strong>Foamed polyethylene insulation with a minimum thickness of &#x215C; inch (10 mm).&#xA0;</li></ul><h2 id="notes"><u>Notes</u></h2><ul><li>Insulate all drain piping and connections to the indoor unit to prevent dew formation and dripping.&#xA0;</li><li>Maintain a continuous downward slope of more than &#xBC; inch per feet (minimum slope ratio of 1/50) with no dips, sags, or reverse slopes.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120521-e327dd73-3d2a-4842-8807-b28e7041516d-cyt24_idu_condensate_piping_connections_dont_pitch.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li><li>Install support straps or brackets every 5-6.5 feet (1.5-2 m) along the horizontal runs to maintain proper slope and prevent sagging.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120521-f4ed78f1-757d-45bc-91aa-0594436da7f4-cyt24_idu_condensate_piping_connections_support_straps.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li><li>Keep the horizontal pipe length under 65 feet (20 m).</li><li>Maintain a gap of approximately &#x215C; inch (10 mm) between parallel pipes if installed side-by-side.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120521-f52a77be-9da3-4983-91d9-5d31d1c19509-cyt24_idu_condensate_piping_connections_slope_downward.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul><h2 id="install-the-flexible-hose"><u>Install the Flexible Hose</u></h2><ul><li>Measure the diameter of the hard pipe using a pipe cutter, then adjust the joining angle as needed.&#xA0;</li><li>Extend the flexible hose to the required length without excessive deformation as shown below:<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120521-04afe04b-80f9-40df-a3bd-d5089b9d4d39-cyt24_idu_flexible_hose_alignment_adjustment.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li><li>Secure the flexible hose firmly using the provided hose band.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120521-dcb465eb-3b42-47bd-803e-58b058131e75-cyt24_idu_flexible_hose_clamps.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li><li>Install the flexible hose in an horizontal orientation to ensure proper drainage. The maximum bending angle is 45&#xB0;.&#xA0;</li></ul><h2 id="connection-procedure"><u>Connection Procedure</u></h2><ul><li>Connect the transparent flexible hose to the PVC drainpipe.&#xA0;</li><li>Apply PVC adhesive to the connection point between the drainpipe and flexible hose to ensure a watertight seal.&#xA0;</li><li>Apply the adhesive approximately 1-&#xBD; inches (38 mm) from the end of the PVC pipe, then insert it into the flexible hose.&#xA0;</li><li>Allow at least 10 minutes for the adhesive to cure. Do not apply pressure to the joint during the drying period.&#xA0;</li></ul><h2 id="heat-insulation"><u>Heat Insulation</u></h2><ul><li>Wrap the entire length of the flexible hose carefully with the provided heat insulation material. Start from the flexible hose and continue to the indoor unit connection.&#xA0;</li><li>Ensure that there are no gaps or exposed sections that could cause condensation.&#xA0;</li><li>Use additional insulation material if necessary to fully cover all piping and connections.&#xA0;</li></ul><h2 id="upward-drainage-installation"><u>Upward Drainage Installation</u></h2><ul><li>The maximum vertical rose of the drainage pipe should not exceed 2.5 feet (0.8 m).&#xA0;</li><li>Maintain a horizontal extension from the indoor unit drain outlet of less than 4 inches (102 mm) before rise.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120521-473d63fe-e3e3-4122-9e0c-f2d266d01333-cyt24_idu_upward_drainage_insulation.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul><h2 id="after-the-installation-is-completed"><u>After the Installation is Completed</u></h2><p>After the installation is finished, check the condensate drain line for leaks and proper drainage. If a condensate pump has been installed, check it to ensure proper operation. A condensate pump is included with the system. Pour water into the drain pan through the inspection port to confirm flow.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120813-99264e71-010e-43a0-8135-9f10696995c1-cyt24_drain_pipe_connection.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></p>

Set Up the Indoor Unit Condensate Piping Connections for Quantum Ultra Ceiling Cassette (CYT-24) systems

This article explains how to suspend the air handler unit for Quantum Ultra Ceiling Cassette (CYT-24) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to suspend the air handler unit for <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><h2 id="steps"><u>Steps</u></h2><ol><li>After setting the hanging bolts in place, slide one nut and washer onto each bolt. Position the nuts slightly above the final resting place of the four suspension brackets. Use tape to keep the washer in place.&#xA0;<ul><li><strong>9-18K Cassette:&#xA0;</strong>Adjust the lower washer to 2-&#x215C; inches (60 mm) above the ceiling.&#xA0;</li><li><strong>24K Cassette:</strong> Adjust the lower washer to 3-&#xBD; inches (90 mm)</li></ul></li><li>Align the four hanging bolts into the T-groove of the indoor unit&apos;s hanging bracket. The hanging bolts are not included with the system.&#xA0;</li><li>Carefully lift and suspend the indoor unit using two people or a mechanical lifting device.&#xA0;</li><li>Use a bubble level or built-in indicator to ensure that the unit is perfectly level.&#xA0;</li><li>Attach the components in the following order:<ul><li>Nut (upper)</li><li>Gasket (upper)</li><li>Suspension bracket</li><li>Gasket (lower)</li><li>Nut (lower)&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120520-7f905225-cae6-493e-92ae-20312689bfd3-cyt24_suspend_air_handler_attach_components.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul></li><li>Use an &#x215C;-inch locking nut to secure the final assembly. Fine-tune the adjustment until the cassette is level.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120520-c220f6b3-4e78-443c-9a13-1c6a33d833f0-cyt24_suspend_air_handler_level_indicator.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered">Tighten all nuts firmly to ensure a stable and vibration-free installation, then re-check the levelness. <img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120520-c4890b31-1956-4bc1-b4c8-cf0d922e34c5-cyt24_suspend_air_handler_tighten_nuts.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ol><h2 id="notes"><u>Notes</u></h2><ul><li>If installing the unit in a location with a Sheetrock (plasterboard) ceiling, it&apos;s recommended to provide an access panel at a suitable location. This will facilitate the final connection of the refrigerant piping, condensate drain, and electrical wiring, allowing for future maintenance access. If installing an access panel is not possible, ensure that all final connections are completed before installing the cassette cover panel.&#xA0;</li><li>If installing the cassette body in a location that is more than 80&#xB0;F (27&#xB0;C) and 80% RH, add a 0.4 inch (10 mm) insulation layer of polyethylene or similar material around the unit.&#xA0;</li><li>Before installing the panel, complete all piping and wiring connections.&#xA0;</li><li>Verify the indoor unit and ceiling opening dimensions are correct prior to panel installation.&#xA0;</li><li>Seal all connection point gaps between the panel, ceiling, and indoor unit.&#xA0;</li></ul><p><br></p>

Suspend the Air Handler Unit for Quantum Ultra Ceiling Cassette (CYT-24) Systems

This article explains the additional leakage sensor for the Quantum Ultra Ceiling Cassette (CYT-24) systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains the additional leakage sensor for the <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><p>The auxiliary refrigerant leak sensor monitors the system operation. If refrigerant concentration exceeds the alarm threshold, the system will stop the compressor and start the circulation fan for safety.&#xA0;</p><p>The refrigerant leak sensor is equipped to systems for safety.</p><h2 id="isPasted"><u>Location of the Leakage Sensor</u></h2><p><strong>Note:&#xA0;</strong>The actual location may vary depending on the model and cabinet design.&#xA0;</p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120516-7727cb7c-33d6-4eed-8c35-1e0989fc176b-cyt24_additional_leakage_sensor.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"></p><h2 id="isPasted"><u>Notes</u></h2><ul><li>Use the additional leakage sensor in only specific installation scenarios that require an auxiliary refrigerant leak sensor.&#xA0;</li><li>The refrigerant sensor has a design life of 15 years. Replace the sensor within its service life.&#xA0;</li><li>The following are the alarm indicators for the refrigerant sensor:&#xA0;<table style="width: 74%; margin-right: calc(26%);"><thead><tr><th style="width: 65.8519%; text-align: center;" class="fr-thick"><strong>Condition</strong><br></th><th style="width: 33.9406%; text-align: center;" class="fr-thick"><strong>Error Code</strong><br></th></tr></thead><tbody><tr><td style="width: 65.8519%; text-align: center;" class="fr-thick">Refrigerant Leak Detected</td><td style="width: 33.9406%; text-align: center;" class="fr-thick">Display &quot;Hd&quot;</td></tr><tr><td style="width: 65.8519%; text-align: center;" class="fr-thick">Communication Error with Refrigerant Sensor</td><td style="width: 33.9406%; text-align: center;" class="fr-thick">Display &quot;Fd&quot;</td></tr></tbody></table></li><li>Only use manufacturer-approved sensors as replacements.&#xA0;</li></ul>

Understand the Additional Leakage Sensor for Quantum Ultra Ceiling Cassette (CYT-24) Systems

This article explains the air duct parameters for auxiliary duct installation of the Quantum Ultra Ceiling Cassette (CYT-24) series.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains the air duct parameters for auxiliary duct installation of the <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) series</a>.&#xA0;</p><h2 id="notes-for-panel-installation"><u>Notes for Panel Installation</u></h2><ul><li>Complete the panel installation after connecting the piping and wiring.&#xA0;</li><li>Confirm the installation sizes of the indoor unit and ceiling hole are correct before installation.</li><li>Seal the connection parts between the panel, ceiling, and indoor unit. Even small gaps may cause wind/water leakage or condensing water.&#xA0;</li></ul><h2 id="air-duct-parameters"><u>Air Duct Parameters</u></h2><table style="width: 100%;"><thead><tr><th style="text-align: center;" class="fr-thick">Model</th><th class="fr-thick"><div style="text-align: center;">Indoor Air Volume</div></th><th style="text-align: center; width: 24.964%;" class="fr-thick">L (Max Length)&#xA0;<br>One Duct Connection</th><th style="text-align: center; width: 24.9638%;" class="fr-thick">L (Max Length)&#xA0;<br>One Duct Connection</th></tr></thead><tbody><tr><td style="width: 25%; text-align: center;" class="fr-thick">9K</td><td style="width: 25%; text-align: center;" class="fr-thick">520m&#xB3;/h</td><td style="width: 24.964%; text-align: center;" class="fr-thick">2m (6.6 ft)</td><td style="width: 24.9638%; text-align: center;" class="fr-thick">1.5m (4.9 ft)</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">12K</td><td style="width: 25%; text-align: center;" class="fr-thick">550m&#xB3;/h</td><td style="width: 24.964%; text-align: center;" class="fr-thick">2m (6.6 ft)</td><td style="width: 24.9638%; text-align: center;" class="fr-thick">1.5m (4.9 ft)</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">18K</td><td style="width: 25%; text-align: center;" class="fr-thick">700m&#xB3;/h</td><td style="width: 24.964%; text-align: center;" class="fr-thick">2m (6.6 ft)</td><td style="width: 24.9638%; text-align: center;" class="fr-thick">1.5m (4.9 ft)</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">24K</td><td style="width: 25%; text-align: center;" class="fr-thick">1500m&#xB3;/h</td><td style="width: 24.964%; text-align: center;" class="fr-thick">2m (6.6 ft)</td><td style="width: 24.9638%; text-align: center;" class="fr-thick">1.5m (4.9 ft)</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">36K</td><td style="width: 25%; text-align: center;" class="fr-thick">1800m&#xB3;/h</td><td style="width: 24.964%; text-align: center;" class="fr-thick">2m (6.6 ft)</td><td style="width: 24.9638%; text-align: center;" class="fr-thick">1.5m (4.9 ft)</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">48K</td><td style="width: 25%; text-align: center;" class="fr-thick">2100m&#xB3;/h</td><td style="width: 24.964%; text-align: center;" class="fr-thick">2m (6.6 ft)</td><td style="width: 24.9638%; text-align: center;" class="fr-thick">1.5m (4.9 ft)</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">55K</td><td style="width: 25%; text-align: center;" class="fr-thick">2100m&#xB3;/h</td><td style="width: 24.964%; text-align: center;" class="fr-thick">2m (6.6 ft)</td><td style="width: 24.9638%; text-align: center;" class="fr-thick">1.5m (4.9 ft)</td></tr></tbody></table><p><br></p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112014-382f941d-9e43-4641-bfee-2cfd6578bc99-cyt24_air_duct_parameters_9k18k.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></p><p><br></p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112014-d2573a57-4a93-4db6-ad8b-42ecb0ea3346-cyt24_air_duct_parameters_24k.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></p><p><br></p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112014-8a765838-a29b-4908-9657-9f06241cafe5-cyt24_air_duct_parameters_36k55k.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></p><p><br></p><p><strong>One Duct Connection</strong></p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112014-bf6b0a6e-1683-46f2-84e3-0c724aefba83-cyt24_air_duct_parameters_one_duct_connection.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></p><p><br></p><p><strong>Two Duct Connection</strong></p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112014-222b0e49-f599-4466-9936-904cb4687a0e-cyt24_air_duct_parameters_two_duct_connection.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></p><p><br></p><p><strong>Close Original Outlet</strong></p><p>If you want to close the original outlet after connecting the duct, stick the sealing tape on the air outlet corresponding to the air duct, as shown in the below figure, before installing the panel. It is recommended not to close the original air outlet after connecting the air duct. If the effect of the air duct is not good, the original air outlet can be close. However, pay attention to whether there is water dripping during operation after sealing.&#xA0;</p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025112014-6fbab9a3-7c53-48c1-84fd-79e8389fc093-cyt24_air_duct_parameters_sealing_tape.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></p><p><br></p>

Understand the Air Duct Parameters for Quantum Ultra Ceiling Cassette (CYT-24) Systems

This article explains how to wire the indoor unit and decorative panel for Quantum Ultra Ceiling Cassette (CYT-24) systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to wire the indoor unit and decorative panel for <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><h2 id="connect-the-signal-cable"><u>Connect the Signal Cable</u></h2><p>There are three terminals (1, 2, 3) and ground (g). It is vital that the colors and numbers between the indoor and outdoor units match for each terminal. The color selection does not matter as much as matching number to number does. Do not mix up the wires between each end.&#xA0;</p><p>Consult the diagram affixed to the indoor and outdoor units respectively for specific wiring instructions.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012115-a3af8acd-a76a-463d-a662-63cc655630e4-ryt24_wire_idu_simplified_diagram.png" style="width: 500px;" class="fr-fic fr-bordered fr-dib"></p><h2 id="wire-the-panel"><u>Wire the Panel</u></h2><p>Wire the panel&apos;s LED display board and louver swing motor to the indoor unit main control board via 10-pin and 5-pin wires.&#xA0;</p><table style="width: 100%;" id="isPasted"><tbody><tr><td style="width: 33.237%; text-align: center; background-color: rgb(239, 239, 239);" colspan="2" rowspan="2" class="fr-thick"><strong>CYT-24</strong></td><td style="width: 16.6185%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>9K</strong></td><td style="width: 16.6185%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>12K</strong></td><td style="width: 16.6667%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>18K</strong></td><td style="width: 16.6667%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>24K</strong></td></tr><tr><td style="width: 66.474%; text-align: center; background-color: rgb(239, 239, 239);" colspan="4" class="fr-thick"><strong>Sectional Area (AWG)</strong></td></tr><tr><td style="width: 26.1561%;" rowspan="3" class="fr-thick"><div style="text-align: center;">Power Supply Cable</div></td><td style="width: 7.1532%; text-align: center;" class="fr-thick">L2</td><td style="width: 16.6185%; text-align: center;" rowspan="3" class="fr-thick">14 AWG</td><td style="width: 16.6185%; text-align: center;" rowspan="3" class="fr-thick">14 AWG</td><td style="width: 16.6185%; text-align: center;" rowspan="3" class="fr-thick">12 AWG</td><td style="width: 16.6185%; text-align: center;" rowspan="3" class="fr-thick">12 AWG</td></tr><tr><td style="width: 7.1532%; text-align: center;" class="fr-thick">L1</td></tr><tr><td style="width: 7.1532%;" class="fr-thick"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012115-25fcd207-460b-4a37-a256-4a81767aba7a-ryt24_wire_idu_symbol.png" style="width: 50px;" class="fr-fic fr-dii"></td></tr><tr><td style="width: 26.1561%; text-align: center;" rowspan="4" class="fr-thick">Connection Cable for Communication Between Indoor &amp; Outdoor Units</td><td style="width: 7.1532%; text-align: center;" class="fr-thick">3(L)</td><td style="width: 16.6185%; text-align: center;" rowspan="4" class="fr-thick">16 AWG</td><td style="width: 16.6185%; text-align: center;" rowspan="4" class="fr-thick">16 AWG</td><td style="width: 16.6185%; text-align: center;" rowspan="4" class="fr-thick">16 AWG</td><td style="width: 16.6185%; text-align: center;" rowspan="4" class="fr-thick">16 AWG</td></tr><tr><td style="width: 7.1532%; text-align: center;" class="fr-thick">2(N)</td></tr><tr><td style="width: 7.1532%; text-align: center;" class="fr-thick">1(S)</td></tr><tr><td style="width: 7.1532%;" class="fr-thick"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012115-c95f7295-b611-4d7a-ac5e-f8f50fd557f9-ryt24_wire_idu_symbol.png" style="width: 300px;" class="fr-fic fr-dii"></td></tr></tbody></table><p><br></p><h2 id="notes"><u>Notes</u></h2><ul><li>Consult the nameplate on the system for detailed electrical specifications.&#xA0;</li><li>230V requires a double-pole breaker (tandem-type will not work).&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012115-a78f00c2-defd-455c-adf7-16ca5711d80d-ryt24_wire_idu_double_pole_230v_breaker.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li></ul>

Wire the Indoor Unit & Decorative Panel for Quantum Ultra Ceiling Cassette (CYT-24) Systems

This article explains how to wrap the lines and seal the air gaps for Quantum Ultra Ceiling Cassette (CYT-24) systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to wrap the lines and seal the air gaps for <a href="https://www.pioneerminisplit.com/collections/quantum-ultra-ceiling-cassette" target="_blank" rel="noopener noreferrer">Quantum Ultra Ceiling Cassette (CYT-24) systems</a>.&#xA0;</p><p id="isPasted"><strong>Note:</strong> Even small gaps can result in air or water leakage, or cause condensation to form.&#xA0;</p><h2 id="isPasted"><u>Steps</u></h2><ol><li>Arrange the pipes, cables, and drain hose correctly.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120815-2cb79760-f9ef-4b9a-a29d-55fa8197be57-cyt24_connect_refrigerant_piping_idu_bundle.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Lag the pipe joints with insulation material and secure them with vinyl tape.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120815-77bbaf96-163b-4af8-bf76-077a3fcad7f6-cyt24_connect_refrigerant_piping_idu_vinyl_tape.png" style="width: 400px;" class="fr-fic fr-dib fr-bordered"></li><li>Run the bound bundle through the wall hole, ensuring not to kink the drain pipe when binding.&#xA0;</li><li>Ensure that all the connections between the panel and ceiling, as well as between the panel and indoor unit are properly sealed.&#xA0;</li></ol>

Wrap the Lines & Seal the Air Gaps for Quantum Ultra Ceiling Cassette (CYT-24) Systems

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