The Taco SR506-5 Switching Relay is the best choice for all your zoning needs, with advanced PowerPort Cards, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integrating is achieved. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.
| Depth (Inches): | 3" |
|---|---|
| Width (Inches): | 11-3/4" |
| Height: | 7-1/2" |
| Amperage: | 20 |
The port for the thermostat is 24V.
Yes, you can use the SR501 to replace a Honeywell RA823A.
yes, that will replace the honeywell ra832a. i also think you will like the indicator lights on the sr501.
The SR503-2 switching relay will connect to the following: (1) The Lochinvar Knight boiler control via the end switch (X1, X2) switching relay (2) The 3 circulator pumps (3) The thermostats.