HONEYWELL AQ2514B4 Aquatrol Boiler Reset Control Panel for 4 Zone Valves with End Switches. The AQ2514B family of Aquatrol Boiler Reset Controls provides simplified, energy-efficient outdoor temperature compensated control of single-temperature, residential hydronic heating systems. It works with the AQ1000T communicating thermostats to convert a single zone heating system into a room-by-room comfort control system, or upgrades a basic relay-logic zoning system to intelligent "zone of greatest demand" control for increased energy efficiency and reduced boiler cycling.

Features:

• Factory configured for control of up to four zones plus domestic hot water.

• Expandable up to 16 zones with expansion zoning modules (sold separately).

• Menu-based 3-line backlit LCD display.

• Separate user and installer configuration modes.

• Outdoor reset of boiler temperature.

• Optional Load reset of boiler temperature based on thermostat demand.

• Warm weather shut down. Installer program backup.

• Centralized 7-day setback program with warm-up boost.

• Single stage boiler control synchronized to zone-of-greatest-demand.

• Reduced boiler short-cycling. Integral Domestic Hot Water control.

• Installer selectable DHW Priority.

• Installer selectable DHW Priority Override.

• Freeze protection.

• Boiler shock protection.

• Burner short cycle protection.

• Boiler heat post purge. Self-test mode.

• Replacement Parts: AQ1574V4 4-zone valve with end switch expansion module. AQ10X38 24 Vac 38 VA transformer, AQ12C10 outdoor sensor, AQ12C11 supply/return sensor.