Medium Temperature Difference Controller for midsize systems
For 25 basic systems with additional functions for unused relays
The MTDC is available in different versions with variable relay combinations. It can be equipped with or without speed-control of standard pumps, high-efficiency pumps or both, just according to your needs.
Sensors and power cable not included.
Connections: 3 sensor inputs for Pt1000 temperature sensors 2 relays and optional PWM0-10V outputs
Features: for 25 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)
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
DESIGNED FOR SPEED CONTROL OF A-RATED HEATING CIRCUIT PUMPS PWM 0-10V
MTDC Version 5 Technical features
Temperature sensors Pt1000: 0
Relay outputs 230V* of which for speed control of standard pumps: 2
1 Outputs 0..10V or PWM signal: 1
VFSRPS sensors: 0
Number of applications: 25+
LEDs redgreen for display of operating status: 1
Simple heat metering: Yes
Flow based heat metering (Grundfos VFS sensor): No
Pressure monitoring (Grundfos RPS sensor): No
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 programs: 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): No
Warranty: 2 Years
