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Building Technologies
Modular Heating Controller RMH760B
CE1P3133en
HVAC Products
12 Function block miscellaneous
05.02.2007
−
As a reference variable for the heat demand transformers
−
For frost protection functions
−
For locking the boiler depending on the outside temperature
−
For forwarding via data bus. This enables the measured value to be used in heat-
ing circuits 2 and 3 also. The factory setting heating circuits 2 and 3 use is the
outside sensor at function block "Miscellaneous"
•
The outside sensors at function blocks “Heating circuit 2“ and “Heating circuit 3” can
be used as follows:
−
As a reference variable for flow temperature control and for other functions in
connection with heating circuits 2 and 3
−
For forwarding via data bus
The outside temperature can be delivered by different sources:
•
The outside sensor is locally connected to a terminal
•
The outside temperature signal is delivered via data bus
The following variants are available:
Variant Effect
Diagram
Outside temperature
locally at the terminal.
Communication outside
temperature not active
Plant operates with its own
outside temperature.
No impact on the bus
T
Outside temperature
locally at the terminal.
Communication outside
temperature active
Plant operates with its own
outside temperature. The
outside temperature is also
made available via bus to
other controllers or other
applications in the same
controller
T
No outside temperature
locally.
Communication outside
temperature active
Plant operates with the outside
temperature delivered via bus
by some other controller.
Heating circuits 2 and 3 oper-
ate per default according to
this variant
31
40
Z10
T
No outside temperature
locally.
Communication outside
temperature not active
Controller has no outside
temperature
T
The type of sensing element of the outside sensor can be selected under
… >
Settings >
Inputs
at the assigned terminal. Default setting is an LG-Ni 1000 sensor.
Connection of an NTC575 sensor (e.g. QAC32) is possible.
Main menu > Commissioning > Settings > …
or
Main menu > Settings > Inputs
Operating line
Range
Factory setting
RMH760.X… (or RMZ78…)
Ni1000 / 2×Ni1000 /
T1 / Pt1000 / 0…10 V /
NTC575
Ni1000
The outside temperature can be transmitted to other controllers via bus, or it can be
received from the bus. For that purpose, communication must be activated and an
Connection choices
Outside temperature
via bus
