Thermal system solar controller DELTASOL® AL E HE

The DeltaSol® AL E HE controller is especially designed for standard solar systems with a high-efficiency pump and an electric backup heating. It is equipped with a PWM output and two high-current relays to which an electric immersion heater of up to 3 kW (230 V~) can be connected. The heater can be directly connected to the controller without the need of auxiliary relays. For data communication, the controller has a RESOL VBus®. Direct connection of an electric immersion heater up to 3 kW (230 V~) DHW heating with rapid heat-up and thermal disinfection Time and temperature control of the electric backup heating Solar backup heating suppression Heat quantity measurement via VFD Grundfos Direct Sensor™ PWM output for the speed control of a high-efficiency pump Quick access to the holiday and the manual modes Status display for a bidirectional HE pump Drainback option and tube collector function Commissioning menu Max. number of collector fields:1 Max. number of stores:1 Weather-compensated heating circuits:- External heat exchanger:- Speed control of standard pumps:check Speed control of HE pumps:check ■ via integrated PWM output:check ■ via PSW adapter:- Hardware Temperature sensor inputs:4 Sensor type:Pt1000 Inputs for Grundfos Direct Sensors™:digital Input for CS10 irradiation sensor:- Impulse inputs for V40 flowmeter:- Relay outputs in total:3 ■ semiconductor relays (speed control):1 ■ electromechanical relay:- ■ potential-free relay with changeover contact:- ■ potential-free relay with normally open contact:- ■ potential-free high-current relay:2 PWM outputs:1 ■ convertible to 0-10 V:- Real-time clock:check Data interface:VBus®