Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 3 Commissioning 2017-09-29
The configuration diagram shows all function blocks active in the plant type. In this
example, these are the following types of function blocks:
• Boiler control including maintained boiler return temperature controlled via mixing valve
• Miscellaneous
• DHW heating
• Heating circuit 1
• Heating circuit 2
For additional examples, refer to subsection 17.1.4 "Examples".
The configuration diagram shows the inputs and outputs preconfigured in the basic
module.
This means that for an input variable (e.g. the boiler temperature), an input terminal
(e.g. X1) has already been preconfigured per default.
For plant type H4-5, the following inputs and outputs are preconfigured in the boiler
temperature controller, that is, in function block "Boiler":
Input variable
Terminal
Designation in diagram
Boiler temperature
X1
N.X1
Boiler return temperature
X3
N.X3
Output variable
Terminals
Designation in diagram
Actuator maintained boiler return
temperature
Q1 and Q2 N.Q1/Q2
1-stage burner
Q3
N.Q3
Boiler pump
Q5
N.Q5
• "N." in the tables denotes "controller"
• If required, additional inputs and outputs (e.g. flue gas temperature sensor, operating
mode relay, circulating pump) can be assigned to the free inputs and outputs via
"Extra configuration"
• The inputs and outputs can be checked with the help of menu Extra configuration > … >
Inputs (or Outputs)
• It is possible to reconfigure or remove preconfigured inputs and outputs
Example: When removing the second burner stage ("---" in place of N.Q4, for
example), the 2-stage burner becomes a 1-stage burner.
The configuration diagram shows the types of extension modules required.
Also shown are the inputs and outputs preconfigured in the extension modules. For
plant type H4-5, extension modules RMZ782B(1), RMZ782B(2) and RMZ783B are
used as standard. This can be viewed on the Basic configuration menu, operating lines
Position 1, Position 2 and Position 3.
The type of extension modules used can be changed, but in that case, all inputs and
outputs of the changed module must be reconfigured.
Type of
module
Input variable Terminal Designation in diagram
RMZ783B
Primary flow sensor
X1
A3.X1
Storage tank sensor at
the top
X2 A3.X2
RMZ782B(1)
Flow sensor
X1
A2.X1
RMZ782B(2)
Flow sensor
X1
A2.X1
Type of
module
Output variable Terminal Designation in diagram
RMZ783B
3-position primary mixing
valve
Q1 and Q2 A3.Q1/Q2
Primary pump
Q5
A3.Q5
Function blocks
Controller
Inputs
Outputs
Notes
Extension modules
Inputs
Outputs