Return Temperature Limitation - Siemens Synco living QAX913 Mounting And Commissioning

Room group pumps and DHW charging pump:
M1 DHW pump/diverting valve
B1 DHW sensor
K Electric immersion heater
E Consumer (radiator or floor heating)
T Room temperature sensor or room unit
M2/M3 Room group pumps 1 and 2
B2/B3 Flow sensors room groups 1 and 2
U1 Mixing valve for room group 1 (radiators)
U2 Mixing valve for room group 2 (floor heating)
T Room unit or
room temperature sensor
Y1 Radiator control actuator
Y2 Heating circuit valve (2-position)
Specify if room group pumps are installed and how they are controlled.
Main menu > Commissioning > Basic configuration
> Room groups > Room group X > Room group pump:
---
Via RF
Q1 (local)

Return temperature limitation

The return temperature of both room groups can be limited: Minimum or
maximum limitation.
A return sensor is needed for return temperature limitation. Set the
room group's "function" to "Primary controller + return sensor".
24 / 134
Siemens
Building Technologies
Inactive --- no room group pump installed
(factory setting).
Room group pump connected to relay output Qx of a
RRV91... heating circuit controller or RRV934 multi-
controller.
Room group pump connected to relay output Q1 of the
central apartment unit.
Synco™ living
Commissioning the system
CE1C2740en
13.12.2010