Aquatrol Boiler Reset Control Panel w/ DHW priority for 4 zones of pumps or 2-wire valves Zoom

Aquatrol Boiler Reset Control Panel w/ DHW priority for 4 zones of pumps or 2-wire valves

SKU:AQ25142B

Brand: Honeywell

Honeywell
Qty Price
$376.95
/ each
In Stock! Ships in 24-48 Hours
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Specs

Application: Boiler reset control for hydronic zoning system
Thermostat Compatibility: AQ1000 Series 2-wire
Most Digital Thermostats
Setback Program: 7 day
up to 2 setback periods/day
User Interface: LCD Display and a 7 button Key Pad
Zones:
?
4
Boiler Supply Max. Control Temp: OFF
120F to 225 F
Boiler Min. Control Temp: OFF
59F to 180F
Outdoor Low Design Control Temp: -60F to 32F
Return Min. Control Temperature (F): 80 F to 180 F
Boiler Differential: 2F to 41F
or Auto (min 2 minutes on time)
Boiler Heat Post Purge: Off
10 seconds to 30 minutes
Factory default is 30 sec
Pump Valve/Excercise: 30 seconds per 2 weeks of space heating inactivity
Voltage:
?
120v
Hertz: 60
RC Input: 24 Vac Class II
RC Output: 38 VA
24 Vac Class II
Wiring: 10 Ft
Auxiliary Demand Input: External dry contacts connection only
Heat Demand Input: External dry contacts connection only
Boiler Output Rating: 24 Vac
0.5A
12VA
DHW Demand Input: External dry contacts connection only
Auxiliary Low Voltage Output Rating: 24 Vac
0.5A
12VA
Boiler Pump Output: 120 Vac/250 Vac 5A
1/3HP
DHW Pump/Valve Output: 120 Vac/250 Vac 5A
1/3HP
Auxiliary Pump Output: Dry contact output
120 Vac/250 Vac 5A
1/3 HP
Zone Output Contact: Pumps: 120 Vac/250 Vac
5A
1/3 HP
Control Temp Range (F): 32 F to 130 F
Operating Humidity: 5 to 90% RH
non-condensing
Sensor Temperature: -58 F to +230 F
Dimensions: 16-1/2" wide x 8" high x 3-3/8" deep
Zoning Devices Controlled: 2-wire valves
Pumps
Boiler Design Temp: 80F to 210F
Warm Weather Shutoff Temp: Off
35 F to 100 F
Electric Connection: Wire-clamp screw terminals

Description for Honeywell AQ25142B

The AQ251 family of AQUATROL Boiler Reset Controls provides simplified, energy-efficient outdoor temperature compensated control of single temperature, residential hydronic heating systems. The AQ251 easily converts 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 with outdoor reset for in-creased energy efficiency with reduced boiler cycling. AQ251 boiler controls can ensure ample supply of hot water for both space heating and priority generation of domestic hot water for bathing, dishes and laundry.

Features

  • Use with AQ1000 2-wire polarity-insensitive communicating thermostats (AQ25142B and AQ25144B) or dry contact thermostat (AQ2511B0, AQ25142B, and AQ25144B).
  • 0-10 Vdc modulating output for driving a modulating/condensing boiler.
  • Displays outdoor temperature on all AQ1000 thermostats when used with an AQ12C10 outdoor sensor (included).
  • Intuitive programming interface and armchair programming (can be programmed at your desk and taken to the job site "ready-to-install")
  • Customizable control settings and schedules allow for greater level of control and comfort.
  • Central programming of zone set points and setback.
  • 1- or 2-stage zoning.
  • Zoning Control for up to four zones as shipped; can be expanded to a total of 16 zones with AQ255 or AQ257 expansion zoning panels, and up to 64 zones by using AQ254 Add-a-Temperature expansion panels.
  • Outdoor temperature compensation (reset), or Load reset based on indoor temperature feedback.
  • Zone synchronization through Zone of Greatest Demand control.
  • Domestic hot water priority and priority override protection.
  • Line or low-voltage output for zoning equipment (pumps or valves).
  • Boiler short cycling protection.
  • Boiler post purge.
  • Freeze protection.
  • Pump/valve exercise.
  • Boiler shock prevention from cold water returning to boiler.
  • Automated test and purge feature for quick start-up and simplified troubleshooting.
  • Integral 38 VA transformer with self resetting electronic fuse.
  • 2 hour power supply (super-capacitor) to retain day and time settings during power outage.
  • Non-volatile EPROM memory retains program settings during power outage.


Specifications
  • Application: Boiler reset control for hydronic zoning system
  • Thermostat Capaiblity: AQ1000 Series 2-wire communicating thermostats and most digital thermostats
  • Setback Program: 7 day, up to 2 setback periods/day.
  • User Interface: LCD Display and a 7 button Key Pad
  • Number of Communicating Zones Controlled: 4
  • Boiler (Supply) Max. Control Temperature (F): OFF, 120F to 225 F
  • Boiler Min. Control Temperature (F): OFF, 59F to 180F
  • Outdoor Low Design Control Temperature (F): -60F to 32F
  • Return Min. Control Temperature (F): 80 F to 180 F
  • Boiler Differential: 2F to 41F (1C to 23C), or Auto (minimum 2 minutes on time)
  • Boiler Post Heat Purge: Off, 10 seconds to 30 minutes (factory default is 30 seconds)
  • Pump/Valve Exercise: 30 seconds per 2 weeks of space heating inactivity
  • Power Supply: 120V/60Hz
  • R-C Input (on Control and Zoning Modules): 24 Vac Class II (input on Control and Zoning Modules)
  • 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 wire, beta=3892.
  • Auxiliary Imput: External dry contacts connection only
  • Boiler (T-T) Output Rating: 24 Vac, 0.5A, 12VA
  • Control and Zoning Panel Temperature Rating (F): 32 F to 130 F
  • Operating Humidity Range (% RH): Sensor Temperature Rating (F): -58 F to +230 F
  • Boiler Design Temperature (F): 80 to 210F

Aquatrol Boiler Reset Control Panel w/ DHW priority for 4 zones of pumps or 2-wire valves

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by PowerReviews
HoneywellAquatrol Boiler Reset Control Panel w/ DHW priority for 4 zones of pumps or 2-wire valves
 
5.0

(based on 1 review)

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Reviewed by 1 customer

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5.0

Great control

By KC2X

from Long Island NY

Verified Buyer

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        Comments about Aquatrol Boiler Reset Control Panel w/ DHW priority for 4 zones of pumps or 2-wire valves:

        Better value and flexibility than Taco controls. Comes with outdoor reset built in unlike Taco. Recover from deep setbacks by using the matching Honeywell thermostats.

        • Primary use:
        • Business

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        1 Question | 1 Answer
        Displaying question 1
        • Aquatrol Boiler Reset Control Panel w/ DHW priority for 4 zones of pumps or 2-wire valves

          Q:

          i just bought a crown bali boiler and am planning to to plumb my four zone system with circulators instead of zone valves. is this controller compatible?
          Asked on 7/27/2013 by rich from long island, ny

          1 answer

          • VERIFIED BUYER

            A:

            Yes this product will work with circulator pumps. I have a 4-zone heating system in our house in Maine. I might add that I put in a coal boiler furnace as the primary to supplement the existing oil hot air furnace. I put in a hydronic coil that can also be heated by the hot air coming out the oil furnace. The Aquatrol controller (the device you asked about) operates both systems; when demand is not met with the primary boiler, it turns on the hot air furnace automatically. It paid for itself in 1 year! The coal boiler also gives us unlimited hot water for the house.
            I am not paid to say this endorsement, but I have used almost exclusively parts from PexSupply to install the entire system including hydronic floor heating (+ pex tubing) in the renovation (house was built in 1850 on an island in Maine). PexSupply have been very responsive; when I order pumbing supplies for the house it arrives almost the next day. I am a repeat customer.
            Last year we spent the winter in Texas; it cost me over $14000 to keep the house @65 or somewhat cooler than what we typically set the temperature zones when there @74. I felt that the house should still be heated to protect the radiators from freeze up (that would have cost more than the amount spent to maintain @65). The Aquastat did its job unattended the entire time (now over a year). Normally when we are there the heating cost is about $7000 (@74) (half the cost is for 10 tons of coal while the other the half is for 2000 gal of oil). The combined heating system is 400,000 btu per hour but the winters are a challenge for any system and oil is the only other choice (and not very economical). When you do the actual calculations (converting BTU to kwh), coal is $0.02 /khw versus oil at $0.06 per kwh. By comparison electric is 0.18 per kwh!

            Answered on 7/27/2013 by Anonymous
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