Buy Online Research Products 6403k Multi-stage Zone Control Kit 3 Zones

The RESEARCH PRODUCTS 6403k is a multi-stage zone control kit designed for residential and light commercial HVAC zoning applications. It manages up to 3 zones and operates on 18 to 30 VAC with a 40 VA rating at 50/60 Hz. The kit supports multi-stage heating and cooling systems, allowing independent temperature control across separate zones in a single structure. Licensed HVAC technicians install this controller as part of a complete zoning system, typically in conjunction with zone dampers and a compatible multi-stage thermostat. The gray panel-mount enclosure measures approximately 8.63 inches wide, 1.86 inches deep, and 9.66 inches tall.

This zone control kit is suited for multi-stage forced-air HVAC systems requiring independent zone management. It is rated for operating temperatures from 32 to 158 degrees F and a non-condensing humidity range of 5 to 90 percent RH, making it appropriate for installation in mechanical rooms, utility closets, and similar equipment spaces found in residential and small commercial buildings. HVAC contractors select this kit when upgrading single-zone systems to multi-zone configurations or replacing an existing zone control panel.

Key Features

• Controls up to 3 independent HVAC zones from a single panel
• Multi-stage control supports two-stage heating and cooling equipment
• 18 to 30 VAC operating voltage at 40 VA, 50/60 Hz
• Wide temperature rating from 32 to 158 degrees F for equipment-room installation
• Non-condensing humidity tolerance from 5 to 90 percent RH
• Compact gray enclosure for panel or wall mounting

Compatibility

Designed as an OEM-style replacement or new-install zone control panel for multi-stage residential and light commercial forced-air HVAC systems requiring up to 3 zones of control.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable local mechanical codes and the equipment manufacturer guidelines. Power down the air handler and all associated low-voltage control circuits at the breaker before wiring or servicing the zone control panel. Verify that the transformer VA capacity is sufficient to supply the zone panel and all connected thermostats before energizing the system. Do not install in locations subject to condensing moisture or temperatures outside the rated range.

Technical Specifications

• Voltage Rating: 18 to 30 VAC
• VA Rating: 40 VA
• Frequency Rating: 50/60 Hz
• Number of Zones: 3
• Stages: Multi-Stage
• Temperature Rating: 32 to 158 degrees F
• Humidity Rating: 5 to 90 percent RH Non-Condensing
• Width: 8.63 inches
• Depth: 1.86 inches
• Height: 9.66 inches
• Color: Gray

Standard Information

• Brand: RESEARCH PRODUCTS
• Manufacturer Part Number: 6403k