257 iSolar 3

Description:
Differential temperature controller for solar heating systems with 2 relay outputs.
Complete with 4 input sensors and power cord.

Power supply:  115V
Power consumption:  2 A
Rating of relay contacts:  2 A
ΔT adjustment range:  2 – 40°Ra

Features:
– Graphical display with system-monitoring
– 4 temperature input sensors
– 2 output relays for pump or valve control
– 2 selectable system arrangements
– Energy use meter
– Freeze protection
– Adjustable min collector temperature
– Adjustable max storage tank temperature
– Cooling function
– Emergency shutdown function