User Manual
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Siemens Universal controllers RMU710B, RMU720B, RMU730B CE1P3150en
Building Technologies Operating modes 03.10.2011
6.15 Effect of room operating modes (examples)
Ventilation with 2-speed fan.
Fan speed 2, control to Comfort setpoints
Fan speed 1, control to Precomfort setpoints
Sustained mode (Economy), night cooling and frost protection active
Plant OFF, frost protection active
Ventilation with 2-speed fan, speed 2 as per room temperature or IAQ controller.
Fan speed 1, control to Comfort setpoints; speed 2 if room temperature
setpoints are not reached or as per IAQ controller
Fan speed 1, control to Precomfort setpoints; speed 2 if room temperature
setpoints are not reached or as per IAQ controller
Sustained mode (Economy), night cooling and frost protection active
Plant OFF, frost protection active
Ventilation via continuously controlled fans.
Fan controlled, control to Comfort setpoints
Sustained mode (Precomfort) active
Sustained mode (Economy), night cooling and frost protection active
Plant OFF, frost protection active
Chilled ceiling (basic type U).
Pump ON, control to Comfort setpoints
Pump ON, control to Precomfort setpoints
Pump OFF, pump kick active
Pump OFF, pump kick active
Implement as follows if the request exist after customer-specific sustained mode
with basic type U:
Configure input identifier using desired unit, connect input to logic
Use switch-on/switch-off function for logic, time functions for logic can be set as
needed switch-on delay, switch-off delay, min. switch-on time, min. switch-off
time)
Connect logic to function block "Operating mode" to input:
- Timer function or
- Switch to desired operating mode (room operating mode input 1) or
- Room operating mode selector (room operating mode input 1 and 2)
On always acts on the entire plant
The reason for the plant operating mode selector (see section 6.8.3) is "User
request room" and not "Sustained mode".
Application example 1
Application example 2
Application example 3
Application example 4
Application example 5
Note