Catalog

Standard controllers
Communicating HVAC controllers
Application examples RMU..
5-28
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Siemens Switzerland Ltd
Building Technologies Division
5
Room-supply air temperature cascade and humidity controlRMU720B..
ADFB01 U2B HQ
V 7-day time switch with holiday / special day program
V Control of a 2-speed fan
V Control of the supply air temperature via the heating coil valve and cooling
coil valve in sequence
V Control of room humidity via the air humidifier (on command and modulating
positioning signal)
V Frost protection with frost protection monitor
V Supervision of the supply and extract air fans with differential pressure sen-
sors
V Supervision of the supply air filter with differential pressure sensors
V Limitation of supply air humidity
Room-supply air temperature cascade and humidity controlRMU720B..
AEDB01 U2B HQ
V 7-day time switch with holiday / special day program
V Control of a 2-speed fan
V Control of the supply air temperature via the mixed air dampers and the heat-
ing coil valve in sequence
V Control of room humidity via the air humidifier (on command and modulating
positioning signal)
V Frost protection with frost protection monitor
V Supervision of the supply and extract air fans with differential pressure sen-
sors
V Supervision of the supply air filter with a differential pressure sensor
V Limitation of supply air humidity
The indicated energy efficiency classification can be attained only if the fol-
lowing functions are implemented:
V Air flow control at the room level‚ demand control (Air quality sensor
required)
V Air flow control at the air handler level‚ automatic flow or pressure control
with or without pressure reset (Automatic fan step switching corresponds to
Efficiency Class B / Step 2 must be switched based on air quality)
V With heat exchanger overheating control
V Supply Temperature control‚ variable set point with load dependant compen-
sation
V Room or exhaust air humidity control
To fulfill the classification‚ the plant must be equipped with
all indicated functions.