Catalog

Standard controllers
Communicating HVAC controllers
Application examples RMU..
5-31
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Siemens Switzerland Ltd
Building Technologies Division
5
Room-supply air temperature cascade and humidity control RMU730B..
ADZA01 U3B HQ
V 7-day time switch with holiday / special day program
V Control of a 2-speed fan
V Room (extract air)-supply air temperature cascade control with minimum and
maximum limitation of the supply air temperature
V Control of the supply air temperature via the reheater valve and the cooling
coil valve in sequence
V Control of the dewpoint temperature via the preheater valve and the cooling
coil valve in sequence
V Control of room humidification via the air humidifier (on command)
V Control of room dehumidification by changing the outputs of dewpoint tem-
perature control
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 by shutting down the preheater and by
switching off the air humidifier in sequence
Room-supply air temperature cascade and humidity control RMU730B..
AEZH01 U3B DE
V 7-day time switch with holiday / special day program
V Control of variable speed fan
V Room (extract air)-supply air temperature cascade control with minimum and
maximum limitation of the supply air temperature
V Control of the supply air temperature via the mixed air dampers‚ the reheater
valve and cooling coil valve in sequence
V Control of the dewpoint temperature via the mixed air dampers‚ the preheater
valve and cooling coil valve in sequence
V Control of room humidification via the air humidifier (on command)
V Control of room dehumidification by changing the outputs of dewpoint tem-
perature control
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
V Air flow control at the air handler level‚ automatic flow or pressure control
with or without pressure reset
V With heat exchanger overheating control
V Free mechanical cooling
V Supply Temperature control‚ variable set point with load dependant compen-
sation
V Room or exhaust air humidity control
V Home automation / building automation and control system and technical
home/building management required satisfying Efficiency Class A
To fulfill the classification‚ the plant must be equipped with
all indicated functions.