When combined with Watts Radiant's electrothermal actuators and acuator valve controls, a complete troublefree system is created, serving from 1 to 12 zones and delivering up to 50,000 BTU/h (maximum of 68,000 BTU/h with a minimum boiler temperature of 160°F).
With a standard temperature range of 113° to 140°F (45° to 60°C), many different installation types can be accommodated. The unit is factory set at 131°F (55°C). The valve is easily adjustable and locks in position with a 'click-stop' device, preventing temperature drift.
Furthermore, a three-speed 3-1/25 HP pump comes pre-installed and pre-wired, taking the guesswork out of field installations. This unit is ready - right out of the box!