Solar Thermal / Hot Water Pump Controller Delta Temperature

Description

Solar Hot Water differential system controller. 22 preconfigured systems types. Can control, pumps, valves and relays related to your solar hot water system.
Domestic water systems, pool heating systems, recirculation pump/valve control. Controller is all 120v built in relays and can power small pumps and valves directly. For larger equipment add an external relay.
Controller has Grundfos VFS flow sensor connection (Sensor sold separately). Units includes (3) PT1000 temperature sensors.
Digital LCD display with push button controls. 115V input with 3 relays for pumps, valves or other controls. Relays are limited to 1A. Use an external relay for higher current switching. First relay is digital for optional pump speed control. Use relay 2 or 3 for external relays. Use relay #1 for external solid state relays.
The device is impressive most of all for it's functionality and simple, almost self-explanatory operation. The controller menu contains the measured values for historical operational and settings, as well as error messages and clearly structured graphics.
PWM or 0-10V variable speed pump control on relay #1.