Fresh water technology
Direct, fresh and hygienic drinking water heating using the continuous-flow water heating principle: In a fresh water station, the hot water is only heated when it is actually required.more
Steca TF A603 MCK+ / TF A603 KS+
Domestic hot water controllers (cascaded)
- Flexible and expandable
- A multifunction graphical LC display with backlighting shows the measurements from the controllers connected to the Steca TPC 1 bus
- Animated representation of the different systems and operating states on the display of the Steca TF A603 MCK+
- Auto-adaptive control algorithm
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Steca TF A603 MCK+ / TF A603 KS+Domestic hot water controllers (cascaded)DescriptionFeaturesDownloadsTechnical data Compare productsDescription
The Steca TF A603 MCK+ and Steca TF A603 KS+ are fresh water controllers for direct hygienic heating of drinking water using the continuous- flow water heating principle. The Steca TF A603 MCK+ (master) can be connected to a maximum of three Steca TF A603 KS+ (slaves) to form a four-stage fresh water cascade.
Cascading fresh water stations is a good way of using existing standardised, low-cost fresh water stations designed for single and two-family homes to provide the larger draw-off capacities needed for apartment complexes and multi-story residential buildings.
This allows small draw-off volumes to be implemented for large buildings at very good heat transfer ratios because not all of the stations need to be operated at the same time. The reliability of the hot water supply is increased by this because the cascading makes several stations available at the same time.
A new control algorithm in the Steca TF A603 MCK+ and Steca TF A603 KS+ controllers allows the energy in the buffer tank to be transferred to the drinking water circuit in an especially fast and efficient manner. Immediately after initial commissioning the selflearning algorithm in the controllers adapts to the special aspects of each respective system to provide a constant drinking water tempera ture under hygienic conditions.
This is performed with the specific aim of achieving the lowest possible temperature in the return flow to the buffer tank, in order to further increase the efficiency and yields of the solar system. This is supported by a zone feeding function for the buffer tank water, implemented using a 3-way switching valve.
The Steca TF A603 MCK+ also allows control of a circulation pump on a time, temperature or pulse dependent basis.
Features
Product features
- Flexible and expandable
- Master-slave concept
- Compact, multipart designer casing
- Electronic speed control
- High level of operational safety through fault diagnosis
- Hours-of-operation logger
- Software update possible
- Daily pump start
- Integrated Steca TPC 1 bus
Displays
- A multifunction graphical LC display with backlighting shows the measurements from the controllers connected to the Steca TPC 1 bus
- Animated representation of the different systems and operating states on the display of the Steca TF A603 MCK+
- 4 LEDs show the operating states of the Steca TF A603 KS+
Operation
- Multilingual menu navigation
- Side switch for manual, auto, off
- Side button for TPC 1 bus addressing
Functions
- Auto-adaptive control algorithm
- Data logger on SD card
- Heat quantity (Grundfos Direct Sensors™, pulse generator)
- Circulation (controlled by temperature / time / pulse)
- Back-up heating
- Thermal disinfection
- Alarm output
Downloads
Product data sheet
Manuals
Product pics, technical drawings, etc.
- Steca TF A603 MCK+ / TF A603 KS+ product pic KS+ 3D · jpg, 300 DPI, high quality · 1.085 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic KS+ 3D · jpg, 72 DPI, web quality · 0.276 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic KS+ · jpg, 300 DPI, high quality · 0.942 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic KS+ · jpg, 72 DPI, web quality · 0.229 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic KS+ drawing · jpg, 300 DPI, high quality · 0.528 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic KS+ drawing · jpg, 72 DPI, web quality · 0.273 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic MCK+ 3D · jpg, 300 DPI, high quality · 1.429 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic MCK+ 3D · jpg, 72 DPI, web quality · 0.461 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic MCK+ · jpg, 300 DPI, high quality · 1.260 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic MCK+ · jpg, 72 DPI, web quality · 0.381 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic MCK+ drawing · jpg, 300 DPI, high quality · 0.511 MB
- Steca TF A603 MCK+ / TF A603 KS+ product pic MCK+ drawing · jpg, 72 DPI, web quality · 0.257 MB
Technical data
| TF A603 MCK+ | TF A603 KS+ | |
|---|---|---|
| System voltage | 230 V AC (± 15 %), 50 Hz | |
| System voltage optional | 115 V AC (± 15 %), 60 Hz | |
| Own consumption | ≤ 2 W | |
| Number of inputs | 6 | |
| Inputs | 6 x temperature (Pt1000) | |
| Additional inputs | 1 x Grundfos Direct Sensors™ (temperature / flow rate) | |
| Number of outputs | 3 | |
| Outputs | 2 x triac for speed control (R1, R2), max. 250 W (230 V); 1 x switch output relay (R3), max. 800 W (230 V) or R3 voltage free | |
| Additional output | 1 x alarm output or backup heating requirement | |
| Ambient temperature | 0 °C … +45 °C | |
| Interfaces | SD card, RS-232, RS-485 (Steca TPC 1 bus) | RS-232, RS-485 (Steca TPC 1 bus) |
| Data logging | SD card | via Steca TF A603 MCK+ |
| Degree of protection | IP 20 / DIN 40050 | |
| Dimensions (X x Y x Z) | 170 x 170 x 46 mm [0.00 x 0.00 x 0.00 inch] | |
| Weight | 450 g [0.00 oz] | |
