Programmable Aquatrol Zoning Panel for 4 Zone, 2-Wire Valves w/ End Switches

Honeywell AQ257 expansion zoning panels work with AQ2000 boiler control panels and AQ1000 communication thermostats to control up to four space heating zones. Combine with extra expansion panels and AQ2000 panel for 16 space heating zones.

Features

• AQ257 for zoning with zone valves with end switches
• Includes auto test function to test zones at system start up
• LED lights for visual diagnostic of zone operation
• Adjacent zoning panels can operate different zone equipment
• Easily switch from zone valves to pumps with same zoning module
• R-C transformer and B-B data bus terminal connections for easy expansion
• Zones can be set to energize a group pump via Aux Out dry contacts on main control panel or expansion control panel
• Zone synchronization through Zone of Greatest Demand control

Specifications:

• Application: Zoning control for hydronic zoning system
• Dimensions (in.) : 9-1/2" wide x 8" high x 3-3/8" deep
• Weight (lb): 3.9 lbs
• Approvals: Canadian Standards Association, CSA C/US Certified to CSA and UL Standards, File No. LR76030
• Thermostat Compatibility: AQ1000 Series 2-wire communicating thermostats and most digital thermostats
• Zoning Devices Controlled: Zone valves with end switches (24 Vac)
• R-C Input (on Control and Zoning Modules): 24 Vac Class II (input on Control and Zoning Modules)
• B-B Communication Bus Terminals: Low voltage, Class II, 2-wire polarity-insensitive, digital communicating link to other Control or Zoning modules.
• Zone Module Thermostat Input: Low voltage, Class II, 2-wire polarity-insensitive, digital communicating with power link to AQ1000 series thermostat
• Zone Output Contact Rating: 120 Vac/250 Vac, 0.5A, 12VA
• Electrical Connections: Wire-clamp screw terminals, Maximum 2 x 14 AWG each on line voltage terminals