LTDC
“Large” Temperature Difference Controller for complex systems. For 42 basic systems with additional functions for unused relays, VFS and RPS flow and pressure metering, remote control and data logging via external data logger. It can be equipped with or without speed-control of standard pumps, high-efficiency pumps or both.
LTDC | |
---|---|
Sensor inputs PT1000 | 6 |
Relay outputs 230V | 3 |
Relay output voltage-free | ✕ |
Outputs 0..10V or PWM signal for speed control of high-efficiency pumps |
2 |
Number of applications | 42+ |
Extension of pre-defined systems by selectable additional functions |
✓ |
LEDs red/green for display of operating status | ✓ |
Statistics and graphic analysis of data memory | ✓ |
Flow based heat metering via Grundfos direct sensor (VFS / VVX) | 2 |
Pressure monitoring via Grundfos direct sensor (RPS) | 2 |
Battery-backed Real Time Clock > 24h | ✓ |
Time and Temperature-controlled thermostat function | ✓ |
Legionella function via solar | ✓ |
Legionella protecion via additional heating | ✓ |
Cooling function | ✓ |
Setup wizard | ✓ |
System protection | ✓ |
Collector protection | ✓ |
Storage protection (CP Tmax) | ✓ |
Anti-freeze protection | ✓ |
Recooling | ✓ |
Start logic for vacuum tube collectors | ✓ |
Control program for self-dumping systems (drain-back) | ✓ |
Function control and error memory with date and time | ✓ |
Menu blocker | ✓ |
Power supply for universal voltage range (100…240VAC) and reduced standby consumption | ✓ |
CAN bus connection for SOREL Connect | ✓ |
Data logging on microSD card | via data logger |
Ethernet connection | via data logger |
Dimensions Height x Width x Depth in mm | 163 x 110 x 51 |
Housing colour | RAL 9003 |
Protection Class | IP40 |
Mounting Hardware, Spare Fuse and User Manual | ✓ |

Storage transfer

Solid fuel boiler with storage

Solar with pool

Solar with storage

Return flow increase

Solar with heat exchanger (sensor in secondary circuit) and pool

Stop valve

Universal DeltaT

Thermostat function

Solar with cooling 3 (storage cooling)

Solar with cooling 2 (collector cooling)

Solar with cooling 1 (collector cooling)

Solar with solid-fuel boiler

Solar with thermostat and valve

Solar with pool and heat exchanger

Solar with storage transfer

Solar with 2 storages and valve

Solar with 2 storages and 2 pumps

Solar with 2 collector surfaces and 2 pumps

Solar with 2 collector surfaces

Solar with heat exchanger

Solar with bypass

Solar with heating circuit

Solar with two-zone storage

Solar with thermostat (auxiliary heating)

Solar with heat exchanger and valve

Solar with heat exchanger and 2 storages

Solar with storage and solid fuel boiler

2x Solar

Solar with thermostat and storage transfer

Solar with thermostat and return flow increase

Solar with 2 collector surfaces, 2 storages and 2 valves

Solar with 2 collector surfaces, 2 storages and 2 pumps

2 x Solar with storage, 2 pumps and heat exchanger

2x Solar with storage, switching valve and heat exchanger

Solar with pool, storage, heat exchanger and valve

Solar with 3 storages and 3 pumps

Solar with 3 storages and 2 valves

Solar with storage and heat exchanger for large systems

Solar with storage, heat exchanger and valve for large systems

Solar with 2 storages, heat exchanger and valve for large systems

VVX15 combined sensor

Data logger

PT1000 Temperature sensors

Immersion sleeves

PC Simulation
Virtual simulators of any SOREL controller are available free of charge for easy product trial, technical trainings or to facilitate your customer support.
Request Simu
