ACiQ Split Horizontal-Vertical Duct Air Conditioner Indoor Unit Manual

Quick guide from the manual

This manual provides essential installation and maintenance instructions for ACiQ split horizontal-vertical duct air conditioner indoor units. The unit is designed for use with R-410A refrigerant and is compatible with multipoise furnaces. Proper installation is critical to prevent water leakage, electrical shock, or fire. Always ensure the unit is level for proper condensate drainage and that all electrical work complies with local and national standards.

Safety Precautions

• Installation: Must be performed by a licensed professional HVAC installer.
• Electrical: Ensure the unit is properly grounded. Use an all-pole disconnection device with at least 3mm clearance if connecting to fixed wiring.
• Handling: Use two or more people to move the unit. Wear protective clothing and gloves to avoid injury from sharp sheet metal edges.
• Environment: Do not install in locations exposed to combustible gas leaks. If installed above a living space, a secondary condensate pan is required.

Installation

The unit supports multiple configurations:

• Upflow: Set the coil on the furnace discharge air opening. Ensure it is level. If the coil is wider than the furnace, use a field-fabricated adapter.
• Downflow: If rotating the coil 90 degrees, use a 4-inch minimum field-supplied adapter to ensure even airflow distribution and prevent water blow-off or coil freeze-up.
• Horizontal: Can be installed on a work platform, secured to roof trusses, or suspended from floor joists. Ensure the cabinet is level side-to-side and front-to-back.

Refrigerant Line Connections

The coil is factory-charged with 15 psi nitrogen. Always remove the suction line plug first to depressurize the coil before removing the liquid line plug. Use field-supplied refrigerant-grade tubing. When brazing, wrap the TXV and nearby tubing with a wet cloth to act as a heat sink. Use a Sil-Fos or Phos-copper alloy; do not use soft solder. Leak check all connections before insulating the suction line.

Condensate Drain Line Connection

The unit features built-in condensate drain fittings. Use PVC fittings and do not over-tighten (finger tighten plus 1-1/2 turns). If local codes require a trap, install one as close to the coil as possible, at least 3 inches (76 mm) deep. Pitch the condensate line 1 inch for every 10 feet of length. If connecting to a waste/sewer line, an open trap must be installed to prevent sewer gas escape.

Care and Maintenance

Periodic maintenance should be performed at least annually by a professional. The only consumer-required maintenance is monthly filter replacement or cleaning. Before final disposal, ensure all components (oil, refrigerant) are removed and recycled.