This article explains how to complete the system startup for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to complete the system startup for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><h2 id="steps"><u>Steps</u></h2><ol><li>Turn off the system thermostat.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012716-a9c89d92-7bd4-4f3c-8626-1fd8cc95e873-dyc18_system_startup_1.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></li><li>Turn on the disconnect switch and apply power to the indoor and outdoor units.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012716-ecd972fe-c06a-4bfa-b7d3-0b232ed075c2-dyc18_system_startup_2.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></li><li>When starting the unit for the first time while the outdoor temperature is below 70&#xB0;F (21&#xB0;C), it is recommended to let the crankshaft heater preheat for 1 hour before turning on the unit. When starting the unit for the first time in Heating mode while the outdoor temperature is below 23&#xB0;F (-5&#xB0;C), the system will force preheat for 1 hour before turning on the unit. PRH will display in the screen.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012716-dbb1f987-a2f3-49f3-92e5-92e231b014ad-dyc18_system_startup_3.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></li><li>Turn on the system thermostat.&#xA0;</li></ol>

Complete the System Startup for Vertex Ducted Central Split (DYC-18) Systems

This article explains how to connect a 12V wired controller to Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to connect a 12V wired controller to <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><h2 id="steps"><u>Steps</u></h2><p>1. Set the dial switch of the indoor and outdoor units to RS-485 communication mode.&#xA0;</p><p>Turn the SW1-1 dial switches on the indoor unit main board and outdoor unit display board to the &quot;On&quot; position.&#xA0;</p><table style="width: 100%;" id="isPasted"><tbody><tr><td style="width: 33.237%; text-align: center;" rowspan="2">SW1-1</td><td style="width: 33.3333%; text-align: center;"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-0cf61942-beb8-4c3e-ada3-2ae4dfdc411c-db217c11-8cf1-4d76-992d-ceb1532ca27a.png" style="width: 100px;" class="fr-fic fr-dii"></td><td style="width: 33.3333%; text-align: center;">RS-485 Communication Mode</td></tr><tr><td style="width: 33.3333%; text-align: center;"><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-55121f10-e501-4e39-8cce-b8763a72ad1d-a59bec16-6e08-4c43-b030-86e81b3ee987.png" style="width: 100px;" class="fr-fic fr-dii"></td><td style="width: 33.3333%; text-align: center;">24V Control (Factory Default)</td></tr></tbody></table><p><br></p><p><strong>Indoor Unit</strong><strong><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-9b84b829-ab35-452f-b2fc-ac0b189a273f-dyc18_rs485_communication_mode_idu.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></strong></p><p><strong>Outdoor Unit</strong></p><p><strong><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-eca57b59-2069-421a-994d-7785cc8a3f6f-dyc18_rs485_communication_mode_odu.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></strong></p><p><br></p><p>2. Connect the RS-485 communication wire.&#xA0;</p><p>Connect the communication wire to the indoor and outdoor units, P-P, Q-Q, E-E one by one. Use 2-core shielded wires, with the shielding layer of the cable connected to E.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-ec28f063-750f-47f4-86e1-d56ac0d52c19-dyc18_rs485_communication_mode_pqe.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></p><p><strong>Note:</strong> The wired controller communication cable is provided by the factory. The P, Q, E communication cables for the indoor and outdoor units need to be purchased separately.&#xA0;</p><p><br></p><p>3. Connect the 12V wire controller.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-d0beb013-7286-4bea-881e-4a4d39f9dc17-dyc18_rs485_communication_mode_12v_controller.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></p>

Connect 12V Wired Controllers to Vertex Ducted Central Split (DYC-18) Systems

This article explains how to connect the condensate drain for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to connect the condensate drain for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p>Do not operate the system without a condensate drain.&#xA0;</p><p>For specific requirements, consult local codes.&#xA0;</p><h2 id="steps"><u>Steps</u></h2><ol><li>Insulate the drainage pipeline to prevent damage caused by condensate formed on the outer surface of the pipeline.&#xA0;</li><li>&#xA0;When connecting the drain connector to the drain pan, use a thin layer of PTFE paste, silicone, or PTEF.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-4966ccc9-e6cf-4dc0-b20b-6d911a473d60-dyc18_refrigerant_pipe_connection_condensate_drain.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li><li>Install a 3-inch elbow on the main drainage pipe as close as possible to the unit. Make sure that the top of the elbow is lower than the joint of the drain pan, allowing the drain pan to drain completely.&#xA0;</li><li>Extend the auxiliary drainage pipes to positions where condensate can be easily seen.&#xA0;</li><li id="isPasted">Plug the unused drain connector with the plug in the parts package provided with the equipment. Use a thin layer of silicone, Teflon paste, or Teflon tape to form a waterproof seal.</li><li>Tighten the drain connector by hand. Do not over-tighten. Tight fittings will crack the pipe connection on the drain pan.&#xA0;</li><li>After installation, test the condensate drain pan and drainpipe. Pour water in the drain pan, enough to fill the drain traps and pipes. Confirm that the drain pan completely drains water, no leakage is found in the drainpipe fittings, and water discharges from the main drainpipe terminal.&#xA0;</li></ol><h2 id="notes"><u>Notes&#xA0;</u></h2><ul><li>Ensure that the drainpipe will not block the inlet in front of the device. The minimum clearance required for the removal and maintenance of the filter screen, coil, or fan is 24 inches (610 mm).&#xA0;</li><li>Make sure that the machine is placed horizontally or slightly inclined to the main drain outlet, allowing water to completely drain from the machine.&#xA0;</li><li>Do not reduce the drainpipe size to less than the connection size provided on the condensate drain pan.&#xA0;</li><li>All horizonal drainpipes must be inclined downward at a slope of at least 1/8 inch per foot to ensure proper drainage.&#xA0;</li><li>Do not connect the condensate drain line to the closed or open sewage pipe. Drain the condensate to an open drainpipe or a safe outdoor area.&#xA0;</li><li>Ensure that there are necessary preparations to disconnect and clean the main drainage pipe.&#xA0;</li><li>If the condensed water begins flowing out from the auxiliary drainpipe, the homeowner should pay attention to possible problems.&#xA0;</li></ul>

Connect the Condensate Drain for Vertex Ducted Central Split (DYC-18) Systems

This article explains how to connect a water float switch to Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to connect a water float switch to <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p>Water float switches are critical safety devices that prevent water damage by automatically shutting down the air conditioner if the condensate drain line becomes clogged and the overflow pan fills up.&#xA0;</p><h2 id="rs-485-communication-mode"><u>RS-485 Communication Mode</u></h2><p>The indoor and outdoor units connect to three communication lines, P, Q, and E. Connect the water float switch between the Terminal P communication line. The Terminal P communication line of the indoor unit first passes through the water float switch, then to the Terminal P of the outdoor unit.&#xA0;</p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-a3e7c7de-322b-4e07-836a-1367d5e707df-dyc18_water_float_switch_rs485.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></p><h2 id="24v-communication-mode"><u>24V Communication Mode</u></h2><p>The indoor and outdoor units connect with R/C/Y/B/G via the 24V thermostat. The R terminal is a 24V power supply. Connect the water float switch to the R signal between the thermostat and indoor unit. When the water float switch experiences an overcurrent, it will disconnect the 24V power supply (R) and compressor signal (Y). This causes the compressor to stop operating.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012616-cdbf60e3-fd83-4df5-95db-9f71888cdf15-dyc18_water_float_switch_24v_communication_mode.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></p>

Connect Water Float Switches to Vertex Ducted Central Split (DYC-18) Systems

This article explains how to install the air filter for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to install the air filter for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p>The replaceable air filter is not included with the system. The size of the external filters or other filter devices must meet the maximum flow rate of 300ft/min or the recommended value of the filter type.&#xA0;</p><p>Positioning the filter incorrectly can disrupt the airflow, influencing the performance of the heating and cooling system. Reduced airflow will shorten the life of the system&apos;s main components. Therefore, we recommend that the return air duct system has only one filter position. For systems without return air filter grids, install multiple filter grids at each return air opening.&#xA0;</p><p>If a high-efficiency filter screen or electronic filtration system is used, do not reduce the airflow rate. The decreased air flow will reduce the overall efficiency and performance of the system.&#xA0;</p><p>If a reusable filter is used, clean it according to the manufacturer&apos;s specifications. The reusable filter must comply with the UL 900 standard.&#xA0;</p><p>Do not double filter the return air system or filter the air supply duct system, as this will also change the performance of the device.&#xA0;</p><p>An air filter must be used when operating the system.&#xA0;</p><p><strong>Note:&#xA0;</strong>We recommend contacting professional installation technicians to ensure the correct installation of such filtration systems.</p><p><br></p><h2 id="steps"><u>Steps</u></h2><ol><li>Manually remove the bolts and filter cover.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012317-4eb319de-e5f0-46a0-afaa-11eba21c730f-dyc18_air_filter_install.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></li><li>Hold the edge of the strainer and pull it out.</li><li>Insert the new filter and ensure that the arrow on the filter screen is consistent with the airflow direction.&#xA0;</li></ol><p><br></p><h2 id="filter-sizes"><u>Filter Sizes</u></h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Model</strong></td><td style="width: 50%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Filter Size</strong></td></tr><tr><td style="width: 50%; text-align: center;" class="fr-thick">24K/36K</td><td style="width: 50%; text-align: center;" class="fr-thick">18&quot; x 22&quot; inches (457 x 559 mm)</td></tr><tr><td style="width: 50%; text-align: center;" class="fr-thick">48K/56K</td><td style="width: 50%; text-align: center;" class="fr-thick">20&quot; x 24&quot; inches (508 x 610 mm)</td></tr></tbody></table>

Install the Air Filter for Vertex Ducted Central Split (DYC-18) Systems

This article explains how to install indoor units in high humidity environments for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to properly install indoor units in high-humidity environments for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p>When installing the unit in a hot and humid place, if the temperature in the space exceeds 86&#xB0;F (30&#xB0;C) and the relative humidity exceeds 80%, insulate the outside of the cabinet. Use glass wool or polyethylene foam as the insulation material. The thickness of the insulation material must be greater than 2 inches (51 mm) and suitable for the installation space opening.&#xA0;</p><p>Condensate may produce on the insulation surface. Use insulation materials designed for HVAC systems. In the process of refrigeration, condensate could produce on the surface. Use an auxiliary drain pan and secure the equipment firmly to prevent it from falling.&#xA0;</p>

Install Vertex Ducted Central Split (DYC-18) Systems in High-Humidity Environments

This article explains how to properly install indoor units in unconditioned spaces for Vertex Ducted Central Split (DYC-18) systems.

<p>This article explains how to properly install indoor units in unconditioned spaces for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p>If installing the indoor unit in an unconditioned space, remove two unused coil guide rails to minimize condensate on the surface of the unit. There are two pairs of coil guide rails in the unit, which are used for upward and downward air supply applications. Unscrew six mounting screws from both sides of the cabinet to easily remove the coil guide rail.&#xA0;</p>

Install Vertex Ducted Central Split (DYC-18) Systems in Unconditioned Spaces

This article explains how to replace the leak detection sensor for Vertex Ducted Central Split (DYC-18) systems. Model: RGD-02TL11. Minimum Lifespan: 15 years. Note: The leak detection sensor needs to be replaced with the same model. If in doubt, con

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to replace the leak detection sensor for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><h2 id="general-specifications"><u>General Specifications</u></h2><p>Model: RGD-02TL11</p><p>Minimum Lifespan: 15 years.&#xA0;</p><p><strong>Note:</strong> The leak detection sensor needs to be replaced with the same model. If in doubt, consult the manufacturer for assistance.&#xA0;</p><h2 id="steps"><u>Steps</u></h2><ol><li>Remove the screws and front panel.&#xA0;</li><li>Disconnect the plug of the leak detection sensor wire from the circuit board.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012216-16e8fb4c-3f4a-494e-9bdf-2957490309c9-dyc18_replace_leak_sensor_1.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></li><li>Remove the screws and pull out the leak detection sensor with the wire.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012216-30490531-7e52-4a8e-a34b-16764eb82191-dyc18_replace_leak_sensor_2.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></li><li>Insert the new leak detection sensor and screw it to the triangular plate.&#xA0;</li><li>Plug and tie the wires to the electronic control board in the same way as before.&#xA0;</li><li>Reinstall the access panels. Ensure that there is no outstanding gap.</li></ol>

Replace the Leak Detection Sensor for Vertex Ducted Central Split (DYC-18) Systems

This article explains how to select the indoor unit installation location for Vertex Ducted Central Split systems.

<h2 id="isPasted"><u>Introduction</u></h2><p>This article explains how to select the ideal location for installing the indoor unit of <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><h2 id="select-the-location"><u>Select the Location</u></h2><p>To ensure proper installation, choose a firm and flat site. Also, make sure that there is sufficient clearance for installation and maintenance.&#xA0;</p><p>Follow the tolerances depicted in the illustration below:</p><h2 id><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120215-a36f9ca8-06c4-44d9-9101-53de64d7933e-dyc18_indoor_unit_installation_location.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></h2><h2 id="-1"><br></h2><h2 id="isPasted"><u>Indoor Unit Diagram</u></h2><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012215-3229cf57-6c06-4c8b-8e39-f92996d5f6a0-dyc18_idu_diagram.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"></p><table style="width: 100%;"><tbody><tr><td style="width: 13.2225%; background-color: rgb(239, 239, 239);" rowspan="2" class="fr-thick"><div style="text-align: center;"><strong>Model</strong></div></td><td style="width: 86.633%; text-align: center; background-color: rgb(239, 239, 239);" colspan="5" class="fr-thick"><strong>Dimension Inches (mm)</strong></td></tr><tr><td style="width: 15.7379%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Height &quot;H&quot;</strong></td><td style="width: 17.0452%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Width &quot;W&quot;</strong></td><td style="width: 16.6072%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Dimension &quot;D&quot;</strong></td><td style="width: 16.5914%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Air Outlet &quot;A&quot;</strong></td><td style="width: 20.5473%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Liquid Line<br>/ Suction Line</strong></td></tr><tr><td style="width: 13.2225%; text-align: center;" class="fr-thick">24K</td><td style="width: 15.7379%; text-align: center;" class="fr-thick">45-3/4 (1,162)</td><td style="width: 17.0452%; text-align: center;" class="fr-thick">19-5/8 (500)</td><td style="width: 16.6072%; text-align: center;" class="fr-thick">22 (560)</td><td style="width: 16.5914%; text-align: center;" class="fr-thick">17-7/8 (454)</td><td style="width: 20.5473%; text-align: center;" class="fr-thick">3/8 / 3/4 (9.5 / 19)</td></tr><tr><td style="width: 13.2225%; text-align: center;" class="fr-thick">36K</td><td style="width: 15.7379%; text-align: center;" class="fr-thick">45-3/4 (1,162)</td><td style="width: 17.0452%; text-align: center;" class="fr-thick">19-5/8 (500)</td><td style="width: 16.6072%; text-align: center;" class="fr-thick">22 (560)</td><td style="width: 16.5914%; text-align: center;" class="fr-thick">17-7/8 (454)</td><td style="width: 20.5473%; text-align: center;" class="fr-thick">3/8 / 3/4 (9.5 / 19)</td></tr><tr><td style="width: 13.2225%; text-align: center;" class="fr-thick">48K</td><td style="width: 15.7379%; text-align: center;" class="fr-thick">53-1/8 (1,350)</td><td style="width: 17.0452%; text-align: center;" class="fr-thick">22 (560)</td><td style="width: 16.6072%; text-align: center;" class="fr-thick">24-1/2 (623)</td><td style="width: 16.5914%; text-align: center;" class="fr-thick">19-1/2 (496)</td><td style="width: 20.5473%; text-align: center;" class="fr-thick">3/8 / 7/8 (9.5 / 22)</td></tr><tr><td style="width: 13.2225%; text-align: center;" class="fr-thick">56K</td><td style="width: 15.7379%; text-align: center;" class="fr-thick">53-1/8 (1,350)</td><td style="width: 17.0452%; text-align: center;" class="fr-thick">22 (560)</td><td style="width: 16.6072%; text-align: center;" class="fr-thick">24-1/2 (623)</td><td style="width: 16.5914%; text-align: center;" class="fr-thick">19-1/2 (496)</td><td style="width: 20.5473%; text-align: center;" class="fr-thick">3/8 / 7/8 (9.5 / 22)</td></tr></tbody></table><h2 id="-2"><br></h2><h2 id="size-rules-for-the-installation-room"><u>Size Rules for the Installation Room</u></h2><p>Minimum room height: 7.2 feet (2.2 m)</p><p>Minimum room area (operating or storage): 215.91 ft&#xB2; or 20.06 m&#xB2;.<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012216-58481578-f575-4d13-b1ec-d43c7d8addf5-dyc18_idu_installation_room_size.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"></p><p>Ensure that the total room area served by the indoor unit is larger than the minimum room area that is safe for a given charge and piping length.&#xA0;</p><p>When a damper is open, TA is the sum of all the rooms that are currently connected by ductwork. When a damper is closed, TA is the sum of only the rooms still connected upstream of that damper.&#xA0;</p><p>For example, if the 36K installation includes connecting pipes with a length of 25 feet and a refrigerant charge of 116.4 oz, it results in the installation room area needing to be more than or equal to 106.57 sq. ft.&#xA0;</p><table style="width: 100%;"><tbody><tr><td style="width: 100%; text-align: center; background-color: rgb(239, 239, 239);" colspan="4" class="fr-thick"><strong>24K/36K</strong></td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick"><strong>Piping Length (m/ft)</strong></td><td style="width: 25%; text-align: center;" class="fr-thick"><strong>Refrigerant charge (kg/oz)</strong></td><td style="width: 25%; text-align: center;" class="fr-thick"><strong>TA min (m&#xB2;)</strong></td><td style="width: 25%; text-align: center;" class="fr-thick"><strong>TA min (ft&#xB2;)</strong><br></td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">7.6 / 25</td><td style="width: 25%; text-align: center;" class="fr-thick">3.30 / 116.40</td><td style="width: 25%; text-align: center;" class="fr-thick">9.90</td><td style="width: 25%; text-align: center;" class="fr-thick">106.57</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">15.2 / 50</td><td style="width: 25%; text-align: center;" class="fr-thick">3.68 / 129.84</td><td style="width: 25%; text-align: center;" class="fr-thick">11.04</td><td style="width: 25%; text-align: center;" class="fr-thick">118.87</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">22.9 / 75</td><td style="width: 25%; text-align: center;" class="fr-thick">4.06 / 143.28</td><td style="width: 25%; text-align: center;" class="fr-thick">12.19</td><td style="width: 25%; text-align: center;" class="fr-thick">131.18</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">30.5 / 100</td><td style="width: 25%; text-align: center;" class="fr-thick">4.44 / 156.71</td><td style="width: 25%; text-align: center;" class="fr-thick">13.33</td><td style="width: 25%; text-align: center;" class="fr-thick">143.48</td></tr></tbody></table><p><br></p><table style="width: 100%;" id="isPasted"><tbody><tr><td style="width: 100%; text-align: center; background-color: rgb(239, 239, 239);" colspan="4" class="fr-thick"><strong>48K/56K</strong></td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick"><strong>Piping Length (m/ft)</strong></td><td style="width: 25%; text-align: center;" class="fr-thick"><strong>Refrigerant charge (kg/oz)</strong></td><td style="width: 25%; text-align: center;" class="fr-thick"><strong>TA min (m&#xB2;)</strong></td><td style="width: 25%; text-align: center;" class="fr-thick"><strong>TA min (ft&#xB2;)</strong><br></td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">7.6 / 25</td><td style="width: 25%; text-align: center;" class="fr-thick">4.40 / 155.20</td><td style="width: 25%; text-align: center;" class="fr-thick">13.20</td><td style="width: 25%; text-align: center;" class="fr-thick">142.10</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">15.2 / 50</td><td style="width: 25%; text-align: center;" class="fr-thick">4.78 / 168.64</td><td style="width: 25%; text-align: center;" class="fr-thick">14.34</td><td style="width: 25%; text-align: center;" class="fr-thick">154.40</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">22.9 / 75</td><td style="width: 25%; text-align: center;" class="fr-thick">5.54 / 195.51</td><td style="width: 25%; text-align: center;" class="fr-thick">16.63</td><td style="width: 25%; text-align: center;" class="fr-thick">179</td></tr><tr><td style="width: 25%; text-align: center;" class="fr-thick">30.5 / 100</td><td style="width: 25%; text-align: center;" class="fr-thick">6.69 / 235.83</td><td style="width: 25%; text-align: center;" class="fr-thick">20.06</td><td style="width: 25%; text-align: center;" class="fr-thick">215.91</td></tr></tbody></table><p><br></p><p>Qmin refers to the minimum airflow of the indoor unit.&#xA0;</p><table style="width: 100%;"><tbody><tr><td style="width: 33.3333%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Model</strong></td><td style="width: 33.3333%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>Qmin [m&#xB3;/h(SCFM)]</strong><br></td><td style="width: 33.3333%; text-align: center; background-color: rgb(239, 239, 239);" class="fr-thick"><strong>QminA [m&#xB3;/h(SCFM)]</strong></td></tr><tr><td style="width: 33.3333%; text-align: center;" class="fr-thick">24K</td><td style="width: 33.3333%; text-align: center;" class="fr-thick">450 (265)</td><td style="width: 33.3333%; text-align: center;" class="fr-thick">439.6 (258.7)</td></tr><tr><td style="width: 33.3333%; text-align: center;" class="fr-thick">36K</td><td style="width: 33.3333%; text-align: center;" class="fr-thick">666 (392)</td><td style="width: 33.3333%; text-align: center;" class="fr-thick">439.6 (258.7)<br></td></tr><tr><td style="width: 33.3333%; text-align: center;" class="fr-thick">48K/56K</td><td style="width: 33.3333%; text-align: center;" class="fr-thick">1,361 (801)</td><td style="width: 33.3333%; text-align: center;" class="fr-thick">662.4 (389.9)</td></tr></tbody></table><h2 id="-3"><br></h2>

Select the Indoor Unit Installation Location for Vertex Ducted Central Split (DYC-18) Systems

This article explains how to configure the airflow for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains the different airflow configurations available for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p id="isPasted">The indoor unit of this system provides installation flexibility, allowing the airflow to be positioned upward, downward, or horizontally.&#xA0;</p><p>The device can return air at the following positions:&#xA0;</p><ul><li>From the bottom at the upward airflow position.&#xA0;</li><li>From left to right at the horizontal position.&#xA0;</li><li>From the top at the downward airflow position.&#xA0;</li></ul><h2 id="isPasted"><p><strong>Vertical Installation (Upward Airflow) - Default Factory Configuration</strong></p><p><u><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120216-7963fdfb-c13b-4e2f-98cd-898b687c3275-dyc18_vertical_installation_upward_airflow.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></u></p></h2><p><br></p><p><strong>Vertical Installation (Downward Airflow)</strong></p><h2 id><u><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120216-0b4536f9-cc3e-4af4-8525-419b30501332-dyc18_vertical_installation_downward_airflow.png" style="width: 300px;" class="fr-fic fr-dib fr-bordered"></u></h2><p><br></p><p><strong>Horizontal Installation (Suspended from Above)</strong></p><h2 id="-1"><u><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120216-73b1cd93-c1a0-4e91-94ad-050e5e4886d3-dyc18_horizontal_installation_suspended.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></u></h2><p><br></p><p><strong>Horizontal Installation (Supported by the Floor)</strong></p><h2 id="-2"><u><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2025120216-7a6ab111-d6c1-4f22-a730-ea4720812fa8-dyc18_horizontal_installation_supported_floor.png" style="width: 500px;" class="fr-fic fr-dib fr-bordered"></u></h2><p><br></p>

Understand the Different Airflow Configurations Available for Vertex Ducted Central Split (DYC-18) Systems

This article explains how to properly complete the ductwork for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains the ductwork guidelines for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><h2 id="guidelines"><u>Guidelines</u></h2><p><strong>Design the Duct System</strong></p><p id="isPasted">Design the duct system within the external static pressure range of the device&apos;s designed operation. Adequate airflow in the system is important, so ensure that the following are included in the total resistance:</p><ul><li>Supply and return ductwork.</li><li>Grid.</li><li>Special filter screen.&#xA0;</li><li>Accessories.&#xA0;</li></ul><p>In addition, design the ductwork according to the American Air Conditioning Contractors Association &quot;ACCA&quot; manual &quot;D&quot; residential air conditioning design and equipment selection in winter and summer. If the ductwork contains flexible air pipes, ensure that the design takes into account of the pressure drop information (straight line length plus all turns) shown in the ACCA manual.&#xA0;</p><p><strong>Insulation</strong></p><p>Insulate the metal ductwork that will operate in the conditioned space and cover it with a moisture-proof layer.&#xA0;</p><p>If the construction and installation of the ductwork is carried out according to SMACNA glass fiber duct construction standards, the fiber duct system can be used.&#xA0;</p><p>The ductwork must meet the U/L standard 181 test of Class I air duct by the National Fire Protection Association of America. Also, check the local ductwork regulations and insulation requirements.&#xA0;</p><p><strong>Connection</strong></p><p>Connect the air duct connector to the 3/4-inch flange on the equipment. Install a flange around the air outlet.&#xA0;</p><p>If the duct connector has an elbow, its size must not be smaller than that of the flange on the outlet of the device.&#xA0;</p><p>If the front flange of the return duct is connected to the fan casing, it must not be screwed into the area where the power cord is located. Drill bits or sharp screw tips can damage the insulation of the equipment&apos;s internal wires.&#xA0;</p><p><strong>Fasten</strong></p><p>Fix the outlet and return ducts to the flanges of the device, then connect the ducts to the device with adhesive tape as needed to prevent air leakage.&#xA0;</p><p>Use appropriate fasteners suitable for the type of duct being utilized.&#xA0;</p><h2 id="safety-notes"><u>Safety Notes</u></h2><ul><li>The on-site ductwork must comply with the National Fire Protection Association NFPA 90A, NFPA 90B, and any other applicable local ordinances.&#xA0;</li><li>Do not connect the return ductwork to any other heat-producing equipment, such as a mantelpiece, stove, etc. This could lead to fire, carbon monoxide poisoning, explosion, personal injury, or property damage.</li></ul>

Understand the Ductwork Guidelines for Vertex Ducted Central Split (DYC-18) Systems

This article explains the electrical wiring for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains the electrical wiring for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p>The article includes information on power supply wiring, control wiring, and grounding. The article also provides a table for electrical data.&#xA0;</p><p><strong>Note:</strong> The wiring on the site must comply with the National Electric Code (C.E.C in Canada) and any applicable local regulations.&#xA0;</p><h2 id="power-supply-wiring"><u>Power Supply Wiring</u></h2><p>Ensure that there is a suitable power supply connected to the device.&#xA0;</p><p>Install a sufficiently-sized branch circuit breaker in a location that is in sight. In addition, make sure that the circuit breaker is easy to install.&#xA0;</p><p>The power supply line of the circuit must be a minimum 221&#xB0;F (105&#xB0;C) copper conductor. The power supply protection device can be a fuse or &quot;HACR&quot; type circuit breaker. For current carrying capacity, wire size, and circuit protector requirements, refer to the Electrical Data table later in the article.&#xA0;</p><p>High-voltage wires can pass through the tapping holes on the right, left, or top of the device.&#xA0;</p><p>Use the three tapped holes (7/8 inch, 1-3/8 inch, and 1-3/4 inch diameter) to connect high-voltage wires to the device.&#xA0;</p><p>Connect the high-voltage to the red and black wires in the control part of the air handler.&#xA0;</p><p>When installing an electric heater, equip the device with one or two 30-60 amp circuit breakers. These circuit breakers protect internal lines and act as disconnecting devices if short circuits occur. The circuit breaker installed in the device does not provide overcurrent protection for the power connection, so its size could be large than that of the branch circuit protection.&#xA0;</p><p><strong>Note:</strong> For more detailed requirements, refer to the device rating label, wiring diagram, and electrical data.&#xA0;</p><h2 id="control-wiring"><u>Control Wiring</u></h2><p>Wiring runs less than 100 feet (30.5 m) in length must use 18 AWG colored low-voltage wires. Use 16 AWG for runs with a length of more than 100 feet (30.5 m).&#xA0;</p><p>For the correct wiring instructions, refer to the wiring diagram on the back side of the air handler blower access panel.&#xA0;</p><p>After the installation, ensure that the low-voltage and high-voltage wiring are in separate conduits.&#xA0;</p><h2 id="grounding"><u>Grounding</u></h2><p>When installing the system, ground through wires or metal conductors.&#xA0;</p><p>Grounding can also be achieved by connecting the grounding wire to the ground lug of the machine.&#xA0;</p><p>When utilizing multiple power supply circuits, each circuit needs to be connected to the grounded plate separately. The grounding plate is located at the upper right of the cabinet.&#xA0;</p><h2 id="electrical-data"><u>Electrical Data</u></h2><p><strong>Note:</strong> When used without a heat kit, match the feeder wire to the actual circuit breaker rating.&#xA0;</p><table style="width: 100%;"><tbody><tr><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>Model</strong></td><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>Voltage</strong></td><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>Hertz</strong></td><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>HP</strong></td><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>Fan Speed</strong></td><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>Circuit AMPS</strong></td><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>MCA(A)</strong></td><td style="width: 12.5%; background-color: rgb(239, 239, 239); text-align: center;" class="fr-thick"><strong>MOP(A)</strong></td></tr><tr><td style="width: 12.5%; text-align: center;" class="fr-thick">24K</td><td style="width: 12.5%; text-align: center;" class="fr-thick">208/230</td><td style="width: 12.5%; text-align: center;" class="fr-thick">60</td><td style="width: 12.5%; text-align: center;" class="fr-thick">1/3</td><td style="width: 12.5%; text-align: center;" class="fr-thick">5</td><td style="width: 12.5%; text-align: center;" class="fr-thick">1.1</td><td style="width: 12.5%; text-align: center;" class="fr-thick">5</td><td style="width: 12.5%; text-align: center;" class="fr-thick">15</td></tr><tr><td style="width: 12.5%; text-align: center;" class="fr-thick">36K</td><td style="width: 12.5%; text-align: center;" class="fr-thick">208/230</td><td style="width: 12.5%; text-align: center;" class="fr-thick">60</td><td style="width: 12.5%; text-align: center;" class="fr-thick">1/2</td><td style="width: 12.5%; text-align: center;" class="fr-thick">5</td><td style="width: 12.5%; text-align: center;" class="fr-thick">2.0</td><td style="width: 12.5%; text-align: center;" class="fr-thick">5</td><td style="width: 12.5%; text-align: center;" class="fr-thick">15</td></tr><tr><td style="width: 12.5%; text-align: center;" class="fr-thick">48K</td><td style="width: 12.5%; text-align: center;" class="fr-thick">208/230</td><td style="width: 12.5%; text-align: center;" class="fr-thick">60</td><td style="width: 12.5%; text-align: center;" class="fr-thick">3/4</td><td style="width: 12.5%; text-align: center;" class="fr-thick">5</td><td style="width: 12.5%; text-align: center;" class="fr-thick">3.5</td><td style="width: 12.5%; text-align: center;" class="fr-thick">10</td><td style="width: 12.5%; text-align: center;" class="fr-thick">15</td></tr><tr><td style="width: 12.5%; text-align: center;" class="fr-thick">56K</td><td style="width: 12.5%; text-align: center;" class="fr-thick">208/230</td><td style="width: 12.5%; text-align: center;" class="fr-thick">60</td><td style="width: 12.5%; text-align: center;" class="fr-thick">3/4</td><td style="width: 12.5%; text-align: center;" class="fr-thick">5</td><td style="width: 12.5%; text-align: center;" class="fr-thick">4.3</td><td style="width: 12.5%; text-align: center;" class="fr-thick">10</td><td style="width: 12.5%; text-align: center;" class="fr-thick">15</td></tr></tbody></table><p><br></p><h2 id="mcamop-data-of-the-electric-heat-kit"><u>MCA/MOP Data of the Electric Heat Kit</u></h2><p><strong id="isPasted">&#x2B24;&#xA0;</strong>indicates availability and x indicates unavailability.&#xA0;</p><p><strong>Applicable Heat Kits for AHU Multi-Position Installation</strong></p><p><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012218-21940ea8-58f9-426f-a177-80edb35622fe-dyc18_idu_heat_kits.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></p><p><strong>Heater Kit Accessories</strong><strong><img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012218-b812380f-9147-47bd-8c6d-25da33c603cd-dyc18_idu_heat_kit_accessories.png" style="width: 1000px;" class="fr-fic fr-dib fr-bordered"></strong><br></p>

Understand the Electrical Wiring for Vertex Ducted Central Split (DYC-18) Systems

This article explains how to update the software for Vertex Ducted Central Split (DYC-18) systems.

<h2 id="introduction"><u>Introduction</u></h2><p>This article explains how to update the software for <a href="https://www.pioneerminisplit.com/collections/vertex-ducted-central-split" target="_blank" rel="noopener noreferrer">Vertex Ducted Central Split (DYC-18) systems</a>.&#xA0;</p><p>A USB port is included on the control board, allowing a certified individual to update the software if needed.&#xA0;</p><h2 id="steps"><u>Steps</u></h2><ol><li>Disconnect the power supply for the system.&#xA0;</li><li>Turn off the thermostat.&#xA0;</li><li>Set the SW1-4 dip switch to &quot;On.&quot;&#xA0;</li><li>Reconnect the power supply.&#xA0;</li><li>Set the SW1-4 dip switch to &quot;Off.&quot; The green light will always be on.&#xA0;</li><li>Insert a USB flash drive containing the software update file into the port.&#xA0;</li><li>Wait until the green light flashes slowly.&#xA0;</li><li>Remove the USB flash drive.&#xA0;<img src="https://attachments.gorgias.help/Q9r0k7BYaV2vg13y/hc/9JWjXVxG8m6DvMqm/2026012718-de4ff52e-3bdf-413f-8d65-0cc7f3997cf4-dyc18_usb_software_update.png" style="width: 800px;" class="fr-fic fr-dib fr-bordered"></li></ol>

Update the Software for Vertex Ducted Central Split (DYC-18) Systems

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Fasten the Under-Bench RV System into Place

Install the Wall Thermostat for Under-Bench RV Systems

Understand the Ductwork Best Practices for Under-Bench RV Systems

Understand the Installation Requirements for Under-Bench RV Systems

Under-Bench RV Inverter (Installation & Setup)

Recreational Vehicle Systems (Installation & Setup)

Understand the DIP Switches for Vertex Ducted Central Split (DYC-18) Systems

DIP Switch Layouts

Turn the LED Display On or Off

Understand the Display Board for Quantum Ultra Ducted Ceiling Concealed (RYT-24) Systems

Understand the Display Panel for RV Rooftop Systems

Understand the Front Panel Displays for Quantum Ultra Ceiling Cassette (CYT-24) Systems

Understand the Front Panel Display for Quantum Ultra Floor-Ceiling Flex (UYT-24) Systems

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

Understand the Wall Controller Display for RV Under-Bench Systems

Display Layouts

CL error code

Clean the Anti-Dust Filters for Diamante Essenza & Pro Systems

Clean the Anti-Dust Filters for Quantum Fresh Systems

Cleaning the Anti-Dust Filters for Quantum Ultra Ceiling Cassette Systems

Clean the Anti-Dust Filters for Quantum Ultra Ducted Ceiling Concealed Systems

Clean the Anti-Dust Filters for Quantum Ultra Floor-Ceiling Flex Systems

Clean the Anti-Dust Filters for Quantum Ultra High Wall-Mount & Hyperformance Systems