Flyer

Feature for RDF800
− Offer touch screen LCD with backlit
− Suitable for heating or/and cooling
of FCU and FCU cooling and oor
heating application
− Comfort, economy and protection
mode selection
− Allow input of external sensor and
switch
− Automatic fan control or manual
3-speed fan control
Features for SFA21/18
- Spring return
- Robust and ergonomic design
- Clutch protected manual override
- Position indicator
- High close off pressure to Δp
s
= 3 bar
Features for SUA21..
- SPST
1)
on/off actuators
- Fast acting operating time
- Operation indicator LED
- High close off pressure to Δp
s
= 4 bar
Thermostat selection
Application Functionality
Cooling only Floor heating Heating or
cooling
Heating and
cooling
Manual
heating/
cooling
changeover
Automatic
heating/
cooling
changeover
Manual fan
speed
Automatic
fan speed
RDF800/RDF800KN ■ ■ ■ ■ ■ ■ ■ ■
1)
SPST – single pole, single throw
Siemens Switzerland Ltd
Building Technologies Division
International Headquarters
Gubelstrasse 22
6301 Zug
Switzerland
Tel. [phone]
© Siemens Switzerland Ltd, 2017 •
BT_0104_EN
Subject to changes and errors. The information given
in this document only contains general descriptions
and/or performance features which may not always
specically reect those described, or which may
undergo modication in the course of further
development of the products. The requested
performance features are binding only when they are
expressly agreed upon in the concluded contract.
Features for V..I46..
- 2- or 3-port valves body for SFA21/18
and SUA21..
- Lasting valves seat design
- k
vs
range 2…5 m
3
/h
- High close off pressure to Δp
s
= 4 bar
Features for STA23
- Fail safe operation
- High quality cable with different
cable length
- 2 wire on/off actuator
- High close off preseure to Δp
s
= 2 bar