Honeywell AQ25042B Aquatrol Boiler Control Panel with DHW priority for 4 zones
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Zone synchronization through Zone or Greatest Demand control.? Domestic hot water priority and priority override protection.? Boiler short cycling protection.? Boiler post purge.? Freeze protection.? Pump/valve exercise.? Boiler shock prevention from cold water returning to boiler.? Automated test feature for quick start-up and simplified troubleshooting.? Integral 38 VA transformer with self-resetting electronic fuse.Honeywell AQ 250 42B 4 Zone Relays Residential Boiler Control AQ 25042B.Application Boiler control for zoned hydronic systems.Thermostat Compatibility AQ1000 Series 2-wire communicating thermostats and most digital thermostats.User Interface (Setting, Programming) DIP Switches.Number of Zones Controlled 4.Boiler Heat Post Purge 30 seconds (sent to DHW tank or Zone of Greatest Demand - selectable).Pump/Valve exercise 30 seconds per 2 weeks of space heating inactivity.Power Supply 120V/60Hz.R-C Output (on transformer) 38 VA, 24 Vac Class II.R-C Input (on Control and Zoning Modules) 24 Vac Class II.Supply/Return Sensor Lead Length: 10 ft. (3050 mm). 10 kilohm NTC thermistor at 25 C (77 F) ±0.5F (±0.3C) up to 500 ft (150 M) using 18 AWG or larger wireHeat Demand (Thermostat R-W) Input External dry contacts connection onlyDHW Demand Input External dry contacts connection onlyBoiler (T-T) Output Rating 24 Vac, 0.5A, 12VAB-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.ZR-ZC Contact Rating 120 to 240 Vac, 1/3 HPBoiler Pump Output Rating 120 Vac/250 Vac 5A, 1/3HPDHW Pump/Valve Output Rating 120 Vac/250 Vac 5A, 1/3HPAux Pump Output Rating Dry contact output, 120 Vac/250 Vac 5A, 1/3 HPZone Output Contact Rating: 120 Vac/250 Vac, 5A, 1/3 HP and then update cheapest prices immediately. Limited time Only!
Honeywell AQ25042B Aquatrol Boiler Control Panel with DHW priority for 4 zones Feature
- Controls up to 2 stages of heat from a single thermostat.
- Use with AQ1000 2-wire communicating thermostats, or most dry contact digital thermostats.
- Zoning Control for up to 4 zones as shipped; can be expanded to a total of 16 zones
- Line or low-voltage output for zoning equipment (pumps or valves).
Honeywell AQ25042B Aquatrol Boiler Control Panel with DHW priority for 4 zones Specification
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