Suspend the Air Handler Unit for Quantum Ultra Ceiling Cassette (CYT-24) SystemsUpdated 2 hours ago

Introduction

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

Steps

Following these steps to suspend the air handler: 

1. 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. 
   • 9-18K Cassette: Adjust the lower washer to 2-⅜ inches (60 mm) above the ceiling. 
   • 24K Cassette: Adjust the lower washer to 3-½ inches (90 mm)
2. Align the four hanging bolts into the T-groove of the indoor unit's hanging bracket. The hanging bolts are not included with the system. 
3. Carefully lift and suspend the indoor unit using two people or a mechanical lifting device. 
4. Use a bubble level or built-in indicator to ensure the unit is perfectly level. 
5. Attach components in the following order:
   • Nut (upper)
   • Gasket (upper)
   • Suspension bracket
   • Gasket (lower)
   • Nut (lower) 
6. Use an ⅜ inch locking nut to secure the final assembly. Fine-tune the adjustment until the cassette is level. Tighten all nuts firmly to ensure a stable and vibration-free installation, then re-check the levelness.

Notes

• If installing the unit in a location with a Sheetrock (plasterboard) ceiling, it'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. 
• If installing the cassette body in a location that is more than 80°F (27°C) and 80% RH, add a 0.4 inch (10 mm) insulation layer of polyethylene or similar material around the unit. 
• Before installing the panel, complete all piping and wiring connections. 
• Verify the indoor unit and ceiling opening dimensions are correct prior to panel installation. 
• Seal all connection point gaps between the panel, ceiling, and indoor unit.