Solar & system controllers

DeltaSol<sup>®</sup> SLL Solar controller

DeltaSol^® SLL Solar controller

The DeltaSol^® SLL is the smallest controller of the SL series. Its equipment is optimised for small and medium-sized solar thermal and heating systems, 10 pre-configured basic systems are available. The DeltaSol^® SLL is also the first controller of its category to offer the automatic function control according to the VDI 2169 directive. Additionally, it is equipped with a potential-free extra-low voltage relay for backup heating demand and a V40 flowmeter input for heat quantity measurement.

Article no.: 115 431 53 | Price bracket A | Price on request

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Microbuttons for quick access to the manual mode and the holiday function
3 relay outputs (incl. 1 potential-free extra-low voltage relay)
4 inputs for Pt1000, Pt500 or KTY temperature sensors
1 V40 impulse input
2 PWM outputs for the speed control of high-efficiency pumps
10 basic system layouts to choose from
Automatic function control according to VDI 2169
Heat pump demand (optional)

Max. number of collector fields:

2¹

Max. number of stores:

2¹

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, Pt500, KTY

Inputs for Grundfos Direct Sensors™:

Input for CS10 irradiation sensor:

Impulse inputs for V40 flowmeter:

Relay outputs in total:

■ semiconductor relays (speed control):

2 (2)

■ 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™:

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:

solar

Twin pump for solar circuit:

Cooling functions and cooling mode:

Flow rate monitoring:

Pressure monitoring:

Function control:

VDI 2169

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:

¹ system-dependent

Inputs: 4 inputs for Pt1000, Pt500 or KTY temperature sensors, 1 V40 impulse input
Outputs: 2 semiconductor relays, 1 potential-free extra-low voltage relay, 2 PWM outputs
PWM frequency: 1000 Hz
PWM voltage: 10.5 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
1 (1) A 30 V= (potential-free relay)
Total switching capacity: 2 A 240 V~
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type X attachment
Standby: 0.69 W
Temperature controls class: I
Energy efficiency contribution: 1 %
Mode of operation: Typ 1.B.C.Y
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus^®
VBus^® current supply: 60 mA
Functions: operating hours counter, tube collector function, thermostat function, pump speed control, heat quantity measurement, adjustable system parameters and optional functions (menu-driven), balance and diagnostics function, function control according to VDI 2169
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, mounting into patch panels is possible
Indication/Display: System-Monitoring-Display for system visualisation, 16-segment-display, 8 symbols for indication of the system status, control lamp (Lightwheel^®)
Operation: 4 push buttons and 1 adjustment dial (Lightwheel^®)
Ingress protection: IP 20 / DIN EN 60529
Protection class: I
Ambient temperature: 0 ... 40 °C
Pollution degree: 2
Dimensions: 110 x 166 x 47 mm
Maximum altitude: 2000 m above MSL
Fuse: T2A