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.
Inputs
Outputs
Sorel Connect
Menu Languages
| 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
Global radiation sensor GIR-7
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
