The Switching Relay 301P connects to one thermostat and operates a circulator and boiler to provide heating to a hydronic heating system. The 301P includes optional exercising to prevent circulator seizure when not in use, and optional post purge operation maximize energy savings.
- Submittal Sheet
- Installation
Features
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20 VA transformer
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3-year warranty
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CSA approved
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Compatible with all low voltage thermostats
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Fuse protects pump
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Hinged cover
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LED for power and zone
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Post purge
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Pump exercising
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Spare fuse included
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Thermal circuit breaker protects transformer
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Top, bottom and back conduit knockouts
Specifications
Control | Microprocessor control. This is not a safety (limit) control. |
Packaged weight | 2.5 lb. (1125 g) |
Dimensions | 6-11/16″ H x 4-15/16″ W x 2-7/16″ D (169 x 123 x 62 mm) |
Enclosure | Cover: ABS plastic, Base: galvanized steel, NEMA type 1 |
Approvals | CSA C US |
Ambient conditions | Indoor use only, 32 to 122°F (0 to 50°C), RH ≤90% non-condensing |
Power supply | 115 V (ac) ±10%, 60 Hz, 5 A |
Transformer | 20 VA at 24 V (ac), 16 VA available for thermostat |
Control load | 7.5 VA at 115 V (ac) |
Fuse | T5A 250 V slow blow, spare fuse included |
Pump relay | 230 V (ac), 5 A, 1/3 hp |
Boiler XX end switch | 24 V (ac), 5 A |
Warranty | Limited 3 Year Warranty |