Bosch Thermotechnology MBC 2, Руководство пользователя

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Foreword
MBC 2 – 6 720 810 583 (2014/02) 14
Foreword
These installation instructions apply to the MBC 2 modulating cascade
regulator.
The MBC 2 modulating cascade regulator has been
developed and manufactured in accordance with the latest
technological developments and the most recent technical
safety regulations. It satisfies the European standard (CE).
As a result, the MBC 2 modulating cascade regulator will function for
many years without any problems.
Particular attention has been paid to user-friendliness.
Important general directions for use
For the safe, economical and environmentally-friendly use of the MBC 2
modulating cascade regulator, we recommend that you observe the
directions provided in these user instructions.
Assembly and any repairs that may be necessary should only be carried
out by authorised fitters.
The equipment should only be used in combination with the accessories
referred to in the installation instructions. Other accessories should only
be used if they are designed specifically for the intended application and
provided that performance and safety requirements are not impaired as
a result.
Rights are reserved to make technical changes!
The manufacturer works continuously to improve its products.
Changes in the figures, the text and technical specifications are
therefore possible.
Table of contents
1 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2 Central heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.1 Regulation principle - general . . . . . . . . . . . . . . . . . . . . . 15
2.2.2 Switching method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.3 Control of system pump . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.4 Frost protection - general . . . . . . . . . . . . . . . . . . . . . . . . 18
2.2.5 Switching sequence - general . . . . . . . . . . . . . . . . . . . . 19
2.2.6 Waiting time for switching on the second boiler . . . . . . 19
2.2.7 Anti-cycling programme - general . . . . . . . . . . . . . . . . . 19
2.3 Hot water supply - general . . . . . . . . . . . . . . . . . . . . . . . 20
2.3.1 How to connect the boiler temperature sensor and
the 3-way valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.3.2 Regulation process of the MBC 2 during demand
for hot water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.4 Remote reporting of faults via the fault relay . . . . . . . . 20
3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1.1 Requirements for a modulating room temperature
regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1.2 Requirements for a modulating weather-dependent
regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 Electrical connections and settings . . . . . . . . . . . . . . . . 21
3.3.1 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.3.2 Settings - general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1 Faults - general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1.1 Fault reporting via the display of boiler 1 or boiler 2
and the associated LED for the boiler on the MBC 2 . . 23
4.1.2 Remote fault reporting via the ModuLine (iRT)
thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.1.3 Remote fault reporting via the integrated fault relay
and the fault LED on the MBC 2 . . . . . . . . . . . . . . . . . . . 23
5 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25