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Aquatrol Boiler Control Panel for 4 Zones or 2 Wire Valves
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$432.04 each
In Stock
Get 3 Tue, Jul 7
Order by today, receive Tuesday
MANUALS (3)
This item replaces: SR301, AQ25242B, AQ25A42B, AQ25142B, SR301AT
Free Shipping This item ships free
Easy Returns No restocking fee for 90 days
Product Highlights
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4
120v
Description
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The AQ250 family of AQUATROL Boiler Controls provides simplified, energy-efficient control of single temperature, residential hydronic heating systems. The AQ250 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 for increased energy efficiency with reduced boiler cycling. AQ250 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
Features
- 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 with AQ255 or AQ257 expansion zoning panels and up to 64 zones when used with AQ254 Add-A-Temp panels.
- Line or low-voltage output for zoning equipment (pumps or valves).
- 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.
Specs
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| Application: | Boiler Control for Zoned Hydronic Systems |
|---|---|
| Thermostat Compatibility: | AQ1000 Series 2-wire Most Digital Thermostats |
| User Interface: | DIP Switch |
| Number of Zones: | 4 |
| Boiler Heat Post Purge: | 30 Seconds |
| 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 |
| Heat Demand Input: | External dry contacts connection only |
| DHW Demand Input: | External dry contacts connection only |
| Boiler Output Rating: | 24 Vac, 0.5A, 12VA |
| ZR-ZC Contact Rating: | 120 to 240 Vac, 1/3 HP |
| 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 Valves: 24 Vac, 0.5 A, 12 VA |
| Control Temp Range (F): | 32 F to 130 F |
| Operating Humidity: | 5 to 90% RH, non-condensing |
| Electric Connection: | Wire-clamp screw terminals |
| Dimensions: | 13" wide x 8" high x 3-3/8" deep |
| Zoning Devices Controlled: | Zone pumps 2-wire valves |
| Sensor Temperature: | -58 F to +230 F |
Contact
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Product Reviews
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Caution
After installing this product discovered that the signal that they use for the thermostat is not 24 VAC between Rh and C. Rh to W is actually 35 VDC. That is quite the problem when your zones are using smart thermostats or any that use the equipment to power them. Called and confirmed with factory. No explanation as to why they would do this. My work around was using RIB relays to separate between the thermostats and RH-W.
J.R.
Chicago, IL
3 years ago
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Installation notes
Works fine but the thing they don't tell you is that is takes 20 mins to start up before it will register a heat demand and turn on the boiler. I almost sent it back, spent ages trying to figure out why it wasn't working. Then one time I happened to leave it switched on and when I came back later bingo! it had started working.
Ian B
Otttawa, Ontario, Canada
13 years ago
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