Product Info
Literature

Overview

AQ257 expansion zoning panels from Resideo 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

Product Specifications

Application: Zoning control for hydronic zoning system
Dimensions (in.): 9 1/2 in wide x 8 in. high x 3 3/8 in. deep
Dimensions (mm): 24 cm wide x 20.3 cm high x 8.5 cm deep
Weight (lb): 3.9 lbs
Weight (kg): 1.8 kg
Approvals, Canadian Standards Association: CSA C/US Certified to CSA and UL Standards, File No. LR76030
Tradeline Value: Tradeline
Thermostat Compatibility: AQ1000 Series 2-wire communicating thermostats and most digital thermostats
User Interface: DIP Switches
Number of Zones: 4
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
Operating Humidity Range (% RH): 5 to 90% RH, non-condensing
Replacement Parts: AQ10X38 24 Vac 38 VA transformer,AQ15740B 4-zone valve with end switch expansion module
Temperature Ratings (C): Panel--0 C to 55 C
Temperature Ratings (F): Panel--32 F to 130 F