Solar & system controllers

DeltaSol<sup>®</sup> AL E HE Solar controller

DeltaSol^® AL E HE Solar controller

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^®.

Solar controller for standard solar thermal systems

Article no.: 115 325 93 | Price bracket A | Price on request

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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:

Max. number of stores:

Weather-compensated heating circuits:

External heat exchanger:

Speed control of standard pumps:

Speed control of HE pumps:

■ via integrated PWM output:

■ via PSW adapter:

Hardware

Temperature sensor inputs:

Sensor type:

Pt1000

Inputs for Grundfos Direct Sensors™:

digital

Input for CS10 irradiation sensor:

Impulse inputs for V40 flowmeter:

Relay outputs in total:

■ semiconductor relays (speed control):

■ electromechanical relay:

■ potential-free relay with changeover contact:

■ potential-free relay with normally open contact:

■ potential-free high-current relay:

PWM outputs:

■ convertible to 0-10 V:

Real-time clock:

Data interface:

VBus^®

Energy-efficient SMPS:

Power supply:

100 ... 240 V~

Heat quantity measurement

■ with flowmeter:

■ with V40 flowmeter:

■ with Grundfos Direct Sensors™:

VFD

Software functions

Antifreeze function for solar circuit:

Collector minimum limitation:

Collector emergency shutdown:

Store maximum limitation:

Store set temperature:

Store emergency shutdown:

Drainback option:

Tube collector function:

■ with adjustable time frame, interval:

Additional ΔT control:

Thermostat function:

Target temperature:

Heat dump function:

Heat exchange:

Store loading in layers:

Priority loading:

■ Parallel loading:

■ Store sequence control:

■ Progressive loading:

■ Successive loading:

■ Spreaded loading:

Solar circuit bypass:

Irradiation-dependent bypass:

Irradiation switch:

Afterheating suppression:

Parallel relay:

Twin pump for solar circuit:

Cooling functions and cooling mode:

Flow rate monitoring:

Pressure monitoring:

Function control:

Error relay:

DHW hygiene functions:

■ DVGW legionella protection:

■ Thermal disinfection:

DHW heating:

Heating circuit return preheating:

Boiler loading/Zone loading:

Solid fuel boiler:

Mixer control weather-compensated:

Mixer control with target temperature:

Circulation:

Function block:

Heating circuit antifreeze function:

Chimney sweeper function for the heating circuit:

Room thermostats:

Inputs: for 4 Pt1000 temperature sensors, thereof 1 x RCTT, 1 x Grundfos Direct Sensor™ VFD, 1 x PWM feedback
Outputs: 1 semiconductor relay, 2 high-current relays for electric immersion heater, 1 PWM output
PWM frequency: 512 Hz
PWM voltage: 10 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
14 (3) A 240 V~ / 24 V⎓ (high-current relay, potential-free)
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type X attachment
Standby: 0.67 W
Temperature controls class: I
Energy efficiency contribution: 1 %
Mode of operation: type 1.B.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus^®
VBus^® current supply: 35 mA
Functions: function control, operating hours counter, tube collector function, heat quantity measurement, time-controlled thermostat function, DHW heating with rapid heat-up, thermal disinfection, holiday mode and backup heating suppression
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Indication/Display: System-Monitoring-Display for visualisation, 16-segment display, 7-segment display, 8 symbols for system states, background illumination and operating control LED
Operation: 3 push buttons and 1 slide switch at the front of the housing
Ingress protection: IP 20 / DIN EN 60529
Protection class: I
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
Dimensions: 144 x 208 x 43 mm
Maximum altitude: 2000 m above MSL
Fuse: T2A