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Technical (0)
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Sales (2)
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| Resideo Hydronic Heating Solutions Brochure (English) | 07/2021 | 4674780 kb |
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| Resideo Hydronic Heating Solutions Brochure (French) | 07/2021 | 4456147 kb |
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Training (0)
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Install (6)
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| Product Data for AQ250 Series Hydronic Control Panels (English) | 05/2025 | 1673070 kb |
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| Mounting Template for AQ25042B, AQ25044B or AQ25110B Control Panel Mounting (English) | 05/2020 | 37596 kb |
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| Installation Job Record for AQ25042B RelayPLUS Zone Synchronizing Boiler Control (English) | 05/2020 | 183869 kb |
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| Quick Installation Guide - AQ250 Series Hydronic Control Panels | 07/2021 | 2124303 kb |
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| Installation Job Record for AQ25044B RelayPLUS Zone Synchronizing Boiler Control (English) | 05/2025 | 564750 kb |
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| AQ2000 Series Aquatrol Thermostat Wiring Installation Instructions (English) | 05/2025 | 639591 kb |
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| Application | Boiler control for hydronic zoning systems |
|---|---|
| Product Features | Use with AQ1000 two-wire communicating thermostats, or most dry contact digital thermostats | Offers zoning control for up to four zones and controls up to two stages of heat from a single thermostat | Can expand up to 16 zones with AQ255 or AQ257 or up to 64 zones with AQ254 Add-A-Temp panels | Line or low-voltage output for zoning equipment, including pumps or valves | Features zone synchronization through the zone or Greatest Demand control | Includes domestic hot water priority, priority override protection and boiler short cycling protection | Automated test feature for quick start-up and simplified troublshooting |
| Approvals and Standards | CSA C/US Certified to CSA and UL Standards, File No. LR76030 |
| Dip Switches | Yes |
| Input Power Voltage | 120 V |
| Output Rating | Boiler (T-T): 24 V AC 0.5 A/12 V A | Boiler Pump: 120 V AC 250 V AC/5 A/1/3HP | DHW Pump/Valve: 120 V AC/250 V AC 5 A/1/3 HP | Auxiliary Pump: Dry contact output, 120 V AC/250 V AC 5 A/ 1/3 HP |
| Postpurge | 30 seconds (sent to DHW tank or Zone of Greatest Demand - selectable) |
| Compatible With | AQ1000 Series 2-wire thermostats | Most digital thermostats |
| For Use With | Boiler Control for Hydronic Zoning Systems |
| Includes | End Switches |
| Warranty | 2 Years |
| Color | Black | Red |
| Pump Valve Exercise | 30 Seconds per 2 Weeks of space heating inactivity |
| ZR- ZC Terminals Contact Rating | 120 V AC to 240 V AC, 1/3 HP |
| Product Depth | 3.38 in | 8.5 cm |
| Product Height | 8 | 20.3 |
| Product Weight | 4.9 | 2.3 |
| Product Width | 13 | 33 |
| No overview is available for this product. |
Accessories (0)
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Replacement Parts (0)
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Direct Replacement (1)
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s-aq25044b-u | Aquatrol Boiler Control Panel, with DHW priority, for 4 zones of 4-wire valves (with end switches), used in Zoned Hydronic Systems | Sign In to View Pricing |
Functional Replacement (0)
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Universal Replacement (0)
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