304P
Switching Relay, Four Zones with Priority
The Switching Relay 304P connects up to four thermostats and operates circulators to provide heating to a zoned hydronic heating system. Zone 1 has optional priority over zones 2 through 4 and can be used to provide heat to an indirect domestic hot water tank. The 304P includes optional exercising to prevent circulator seizure when not in use, and optional post purge operation of the last operating zone to maximize energy savings. The 304P provides a RoomResponseTM signal to modulating-condensing boilers to optimize comfort while improving boiler efficiency.
Features
- Away signal shared between tekmar thermostats, four ground screws
- CSA approved
- Two spare fuses included
- Top, bottom and back conduit knockouts
- Fuses protect transformers and pumps
- Priority override, pump exercising
- RoomResponse (TM) signal, compatible with all low voltage thermostats
- Unlimited zone expansion, zone priority
- Post purge, LED for each zone, priority, end switch and RoomResponse™
Literature
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- Applications - 304P (Aug 2020 - Present)
- Brochure - Zoning with the RoomResponse Signal
- Brochure - Hydronic Zone Control Solutions
- Brochure - Zoning with the RoomResponse Signal (French)
- Catalog - tekmar Controls
- Installation and Operation - 304P (Feb 2020 - Present)
- Job Record - 304P (Oct 2016 - Present)
- Solutions de contrôle de la zone hydronique
- Specification Sheet - 304P (Dec 2018 - Present)
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Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:
| ASSE | CSA | FM Approvals | NSF |
| UL | ULC | USC | WQA |