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Siemens
Temperature Controller RRV851
CE1N2725en
Building Technologies
27.08.2007
Functions
The controller’s functionality is determined by the application selected with the DIP
switches, parameter settings and operating mode selection via the QAX850 master
room unit.
FCU
N2
T
B1
HB B1
Y2
Y1
Y3
Q7
Q8
Q9
H1
SAF
D2
D1
Y1
D1
N1
Y2
C1
D2
27
25
A
0
1
B1
Optional remote temp. sensor
N1 RRV851 controller
C1
Cooling coil
N2 QAX850 master room unit
D1
Remote comfort mode input
SAF Supply air fan
D2
Fault or emergency heat input
Y1
Cooling control valve
FCU Fan coil unit
Y2
Heating control valve
H1 Heating
coil
Type summary
Type reference
Description
Compatible with
RRV851
Temperature controller
•
QAX850 Master room unit
•
QAA32 Room temperature sensor
•
QAH11.1 Cable temperature sensor
The QAX850 is the master MMI for the RRV851 and must be ordered as a separate
item. Any additional remote temperature sensors must also be ordered separately.
Terminal covers are included in the RRV851 box.
Not suitable for use with the Desigo RX range of wall-mounted units.
Product documentation
Document
Document number
Data sheet
N2725
Installation instructions
G2725
Operating instructions, with QAX850 room unit
B2725en01
Application manual
A2725
Declaration of conformity
T2725
Document and unit type
Document number
Data sheet QAX850
N2722
Mounting instructions QAX850
M2721
Application example:
4-pipe FCU system
Note
Supporting
documentation
