Solar & system controllers

System controller DeltaSol<sup>®</sup> SLT

System controller DeltaSol^® SLT

The DeltaSol^® SLT effortlessly controls even complex systems and enables adaptation to the individual system requirements. Numerous pre-programmed optional functions such as thermal disinfection or zone loading can be combined and parameterised. It is also possible to directly choose from 27 pre-programmed basic systems. The operation via 2 main buttons and 1 adjustment dial, the Lightwheel^®, follows the well-known operating concept. The manual mode and the holiday function can be activated by pressing a single button

Configurable compact-class controller

Article no.: 115 005 33 | Price bracket A | Price on request

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4 relay outputs (incl. 1 potential-free extra-low voltage relay)
4 inputs for Pt1000 or Pt500 temperature sensors
Input for 1 analogue Grundfos Direct SensorT™ and 1 frequency input
1 V40 impulse input (also usable as a Pt1000, Pt500 or KTY temperature sensor input)
2 PWM outputs for the speed control of high-efficiency pumps
Numerous pre-programmed optional functions
27 basic system layouts to choose from
Automatic function control according to VDI 2169
MicroSD card slot
Data logging, easy transfer of controller adjustments prepared and firmware updates via SD card

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:

4 (5⁴)

Sensor type:

Pt1000, Pt500, KTY

Inputs for Grundfos Direct Sensors™:

analogue

Input for CS10 irradiation sensor:

Impulse inputs for V40 flowmeter:

Relay outputs in total:

■ semiconductor relays (speed control):

3 (3)

■ 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^®, MicroSD card

Energy-efficient SMPS:

Power supply:

100 ... 240 V~

Heat quantity measurement

■ with flowmeter:

■ with V40 flowmeter:

■ with Grundfos Direct Sensors™:

VFS

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, free selectable

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:

Heating circuit antifreeze function:

Chimney sweeper function for the heating circuit:

Room thermostats:

⁴ via convertible impulse inputs

Inputs: 4 inputs for Pt1000 or Pt500 temperature sensors, 1 analogue Grundfos Direct Sensor™, 1 FlowRotor, 1 V40 impulse input (also usable as a Pt1000, Pt500 or KTY temperature sensor input)
Outputs: 3 semiconductor relays, 1 potential-free extra-low voltage relay, 2 PWM outputs (switchable to 0-10 V)
PWM frequency: 512 Hz
PWM voltage: 10.8 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
1 (1) A 30 V= (potential-free relay)
Total switching capacity: 3 A 240 V~
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type X attachment
Standby: 0.68 W
Temperature controls class: I
Energy efficiency contribution: 1 %
Mode of operation: type 1.B.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus^®, MicroSD card slot
VBus^® current supply: 60 mA
Functions: operating hours counter, tube collector function, zone loading, heat exchange, 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: Full graphic display, control lamp (Lightwheel^®)
Operation: 4 push buttons and 1 adjustment dial (Lightwheel^®)
Ingress protection: IP 20 / 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: T4A