SIEMENS RS485 Flush Mounted Room Thermostat User Manual
– Electric heater enabled (DI)
– Fault input (DI)
– Monitor input (DI)
– Monitor input (AI)
– Automatic heating/cooling changeover sensor (DI)
– Presence detector (DI)
– Hotel keycard (DI)
●
Advanced fan control function, e.g. fan kick, fan start, selectable fan operation (enable,
disable or depending on heating or cooling mode)
●
●
●
●
●
Purge function together with 2-port valve in a 2-pipe changeover system
Reminder to clean filters
Floor heating temperature limit
Reload factory settings for commissioning and control parameters
User and parameter settings can be retained with power loss and operating mode can be
returned to previous operating mode, Comfort mode or Protection mode (depends on
P27)
●
●
●
RS 485 Modbus (terminals +, - and REF) for communication with Modbus compatible
devices
Display on a secondary line: room temperature, outdoor temperature or time of day via
Modbus
Mounting on both round and square conduit boxes, 60 mm fixing centers
Type summary
Operating
voltage
Backlit
LCD
Suitable
conduit
box
Product no.
Stock no.
Control outputs
Fan types
DC 0...10
3-speed
Input
Color
DC 0...10
On/Off
3-pos
V
V
RDF660MB/
MM
S55770-
T433
✓
✓
✓
✓
✓
✓
Square or
round
AC 230 V
AC 230 V
-
-
-
-
Basic
White
White
B1, S1
S55770-
T439
✓
✓
Square or
round
RDF660MB
Basic
X1, X2
Ordering
When ordering, specify both product number/stock number and name:
e.g. RDF660MB/MM / S55770-T433 Modbus room thermostat
Order valve actuators and accessories separately
Accessories
Description
SSN
Data sheet
N3009
Changeover mounting kit (50 pcs / package)
ARG86.3
ARG70.3
Plastic mounting spacer for flush-mounted
thermostats to increase the headroom in the
conduit box by 10 mm
N3009
Note: Order accessories separately.
3
Siemens
A6V12005486_en--_d
2022-11-14
Smart Infrastructure
| General | Details |
|---|---|
| Name | SIEMENS RS485 Flush Mounted Room Thermostat User Manual |
| Make | SIEMENS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.07 MB |
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