Large Temperature Difference Controller for complex systems
 
For 36 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, just according to your needs.
Connections:
 
5-6 sensor inputs for Pt1000 temperature sensors
CAN-interface for SOREL Connect
3 relays and up to 2 PWM0-10V outputs
 
Features:
for 36 basic systems with solar or solid fuel boiler with additional functions for unused relays
Self-explanatory operation via 4 entry keys
Multilingual full-text menu with help texts and graphic mode with animations
High-contrast lighted display with 128x64 dots
Function check and graphical system analysis with long-term memory for statistics about heat quantity and operating hours
RTC Real Time Clock with >24h power reserve 
White housing RAL9003, protection class IP40, dimensions H 163mm W 110mm D 51mm
Mounting hardware, spare fuse and user manual
 
Basic systems:
Solar with storage
Solar with swimming pool
Solid fuel boiler with storage
Storage transfer
Return flow increase
Thermostat function
Universal Delta T
Stop valve
Solar with heat exchanger and pool
Solar with thermostat
Solar two-zone storage
Solar with heating circuit
Solar with bypass
Solar with heat exchanger
Solar with 2 collector surfaces
Solar with 2 collectors and 2 pumps
Solar with 2 storages and 2 pumps
Solar with 2 storages and valve
Solar with storage transfer
Solar with pool and heat exchanger
Solar with thermostat and valve
Solar with solid-fuel boiler
Solar with cooling 1 (collector cooling)
Solar with cooling 2 (collector cooling)
Solar with cooling 3 (storage cooling)
Solar with storage and solid-fuel boiler
Solar with heat exchanger 2 zones
Solar with heat exchanger 2 storages
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
Solar with swimming pool, storage, heat exchanger and valve
Solar with 3 storages and 3 pumps
Solar with 3 storages and 2 valves
 
Additional functions for unused relays:
Solar bypass
Backup heating control
Cooling function
Return flow increase
Anti-legionella function
Storage transfer
Universal DeltaT
Always On
Solid fuel boiler control
Signaling with activated protection function
Signaling with new information message
Pressure monitoring
Booster for fast system loading
Heating circuit
Parallel operating with R1
Parallel operating with R2
Thermostat 2
 
 
LTDC Version 5 Technical features
Temperature sensors Pt1000: 5
Relay outputs 230V* of which for speed control of standard pumps: 3 0
Outputs 0..10V or PWM signal: 2
VFSRPS sensors: 2
Number of applications: 36+
LEDs redgreen for display of operating status: 1
Simple heat metering: Yes
Flow based heat metering (Grundfos VFS sensor): Yes
Pressure monitoring (Grundfos RPS sensor): Yes
Time and temperature-controlled thermostat function: Yes
Battery-backed Real Time Clock: Yes
Legionella protection via solar: Yes
Legionella protection via additional heating: Yes
Cooling function: Yes
Setup wizard: Yes
System protection: Yes
Collector protection: Yes
Storage protection:Yes
Anti-freeze program: Yes
Recooling: Yes
Start logic for vacuum tube collectors: Yes
Control program for self-dumping systems (drain-back): Yes
Data storage with statistics and graphic analysis: Yes
Error memory and analysis with date and time: Yes
Menu blocker: Yes
Ethernet connection (via data logger): Yes
Warranty: 2 Years