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A6. Tankless Application Only with RTC – NO Building Heat; with and without storage tank (ELECTRICAL)
NOTES:
1) Refer to the I&O to determine correct valve orientation and actuator wiring.
2) 120 VAC supplying the RTC may or may not be separate from the burner/boiler circuit.
3) Heat demand can be any electrical signal consisting of 24 – 240 VAC.
4) Use isolation relays for circulators greater than 1/3 HP. Use motor starters for 3 phase circulators.
5) In COLD STANDBY applications, set the “OPEN DELAY” variable to 30 seconds.
This diagram is for reference only. The installer or designer is responsible for the proper selection and design of the
system.