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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 |
| BB - Com Terminal | Low Voltage|Class II|2-Wire polarity-insensitive|Digital Communicating Link to other Control or Zoning Modules |
| Demand Input | Heat Demand (Thermostat R-W) and DHW Demand|External dry contacts connection only |
| Dip Switches | Yes |
| 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 |
| 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. |
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