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Features |
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• 1-stage zoning.
• 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.
• Automated test feature for quick start-up and simplified troubleshooting.
• Integral 38 VA transformer with self-resetting electronic fuse.
• CSA C/US Certified to CSA and UL Standards, File No. LR76030 |
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Product Specifications |
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Application |
Boiler control for hydronic zoning system |
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Thermostat Compatibility |
AQ1000 Series 2-wire communicating thermostats |
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User Interface (Setting, Programming) |
DIP Switches |
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Number of Communicating Zones Controlled |
4 |
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Boiler Differential |
2F to 41F (1C to 23C), or Auto (minimum 2 minutes on time) |
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Boiler Heat Post Purge |
Off, 10 seconds to 30 minutes (factory default is 30 seconds) |
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Pump/Valve exercise |
30 seconds per 2 weeks of space heating inactivity |
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R-C Output (on transformer) |
38 VA, 24 Vac Class II |
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R-C Input (on Control and Zoning Modules) |
24 Vac Class II (input on Control and Zoning Modules) |
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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. |
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Heat Demand (Thermostat R-W) Input |
External dry contacts connection only |
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DHW Demand Input |
External dry contacts connection only |
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Boiler (T-T) Output Rating |
24Vac, 0.5A, 12VA |
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B-B Communication Bus Terminals |
Low voltage, Class II, 2-wire polarity-insensitive, digital communicating link to other Control or Zoning modules. |
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Zone Module Thermostat input |
Low voltage, Class II, 2-wire polarity-insensitive, digital communicating with power link to AQ1000 series thermostat. |
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ZR-ZC Contact Rating |
120 to 240 Vac, 1/3 HP |
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Boiler Pump (C1-C2) Output Rating |
120 Vac/250 Vac 5A, 1/3HP |
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DHW Pump/Valve Output Rating |
120 Vac/250 Vac 5A, 1/3HP |
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Auxiliary Pump Output Rating |
Dry contact output, 120 Vac/250 Vac 5A, 1/3 HP |
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Zone Output Contact Rating |
120 Vac/250 Vac, 0.5A, 12VA |
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Control and Zoning Panel Temperature Rating (F) |
32 F to 130 F |
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Control and Zoning Panel Temperature Rating (C) |
0 C to 55 C |
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Operating Humidity Range (% RH) |
5 to 90% RH, non-condensing |
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Sensor Temperature Rating (F) |
-58 F to +230 F |
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Sensor Temperature Rating (C) |
-50 C to +110 C |
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Dimensions (in.) |
13 in wide x 8 in. high x 3 3/8 in deep |
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Dimensions (mm) |
33 cm wide x 20.3 cm high x 8.5 cm deep |
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Tradeline Value |
Tradeline |
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Type of Zoning Devices Controlled |
Zone valve with end switches |
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Electrical Connections (Line Voltage) |
Wire-clamp screw terminals, Maximum 2 x 14 AWG each on line voltage terminals |
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Outdoor 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. |
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Replacement Parts |
AQ1500B0 boiler control module |
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Replacement Parts |
AQ10X38 24 Vac 38 VA transformer |
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Replacement Parts |
AQ12C11 supply/return sensor |
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Replacement Parts |
AQ1574V4 4-zone valve with end switch expansion module |
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Approvals, Canadian Standards Association |
Certified |
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Approvals, Underwriters Laboratories Inc |
File No. LR76030 |
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Literature and other Resources Download
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Back To Top
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Competitive Comparison - (AQ250 & AQ25A AQ250 and AQ25A Control Panel Feature Comparison)
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Mounting Template - (AQ2504B2, AQ2504B4, AQ2511B0, AQ2521M0 Control Panel Mounting)
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CD ROM - (AQ2000, AQ2504B2, AQ2504B4, AQ2511B0, AQ2514B2, AQ2514B4, AQ2554P2X, AQ2554V2, AQ2558P2X, AQ2574V4 AQ2000 Product Selection Tool CD)
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Quick Installation Guide - (AQ250 Hydronic Control Panels)
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Installation Job Record - (AQ2504B4 RelayPLUS Zone Synchronizing Boiler Control)
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Installation Job Record - (AQ2504B2 RelayPLUS Zone Synchronizing Boiler Control)
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Download
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