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Building Technologies Modular Heating Controller RMH760B CE1P3133en
HVAC Products 8 Main controller and primary controller 05.02.2007
8.5.2 Heat request 2-position
Main menu > Commissioning > Settings > … or
Main menu > Settings > Main controller > Heat request
Main menu > Settings > Primary controller > Heat request
Operating line Range Factory setting
[2-pos] setpoint DHW 5…140 °C 70 °C
[2-pos] priority DHW None [DHW request] /
Shifting [DHW request] /
Absolute [DHW request] /
None [max selection] /
Shifting [max selection]
Shifting [DHW
request]
[2-pos] setpoint frost prot 5…140 °C 70 °C
Main menu > Commissioning > Settings > … or
Main menu > Settings > Main controller > Demand control
Main menu > Settings > Primary controller > Demand control
Operating line Range Factory setting
[Curvepoint 1] outside temp –50…50 °C –10 °C
[Curvepoint 1] flow temp 0…140 °C 70 °C
[Curvepoint 2] outside temp –50…50 °C 20 °C
[Curvepoint 2] flow temp 0…140 °C 70 °C
3 types of digital inputs are available. They are distinguished by different handling of
the heat demand signals and by offering different setting choices.
• A signal received at input “Heating curve request 2-pos“ is handled like a heat
demand signal from a heating circuit. The setpoint is dependent on the outside tem-
perature and is determined with the same heating curve as that used for demand
control. For more detailed information about demand control, refer to section
7.3
“
Heat demand transformer”
• A signal received at input “DHW request 2-pos“ is handled like a heat demand signal
from DHW heating. A constant setpoint can be preselected. In addition, priority of the
resulting DHW request can be set.
For more detailed information about DHW priority, refer to section
10.10 ”DHW prior-
ity”
• A signal received at input “Frost prot request 2-pos“ is handled like a heat request
due to risk of frost. A constant setpoint can be preselected
Depending on the plant’s operating state, a heating curve request in the summer can
be ignored, for example, while consideration is given to a request for frost protection.
Whether the input shall be active when the contact is open or closed can be parameter-
ized for each individual input.
Main menu > Commissioning > Settings > … or
Main menu > Settings > Inputs > RMH760.X… (or RMZ78…)
Operating line Range Factory setting
Normal position Open / Closed Open
Normal position ”Open“ means that the input is active when the contact is closed.
8.5.3 Heat demand outputs
In addition, a digital output (relay) and / or analog output (DC 0…10 V) can be config-
ured on the main controller as a heat demand output.
For further information refer to sections
7.2 “Heat demand outputs” and 8.2
”
Configuration”.
Settings
Digital inputs
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