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3.2.5. Plant type 5 – "Pre-control with a boiler"
3.2.6. Plant type 6 – "Pre-control with district heat"
3.3. Plant types and function blocks
Siemens Building Technologies
Landis & Staefa Division
B7
Pre-control with demand-compensated boiler temperature control. Two-position control
through the burner.
Heat demand signal from the data bus. No heating program.
B7
Pre-control with a district heat connection, with demand-compensated control of the
secondary flow temperature through the valve in the primary return.
Heat demand signal from the data bus. No heating program.
A6
Room unit QAW50 or QAW70
B1
Flow / boiler temperature sensor
B5
Room temperature sensor
B7
Return temperature sensor (primary circuit)
B71 Return temperature sensor (secondary circuit)
B9
Outside sensor
Level
Function block
End-user 1
End-user
level
End-user 2
Heating en-
Plant type
gineer level
Space heating
Three-position actuator for heating circuit
Boiler
Setpoint of return temperature limitation
Settings for plant type 3
Service functions and general settings
Contact H2
Contact H2 and general displays
Locking level Locking functions
Basic Documentation RVL470
Fundamentals
B71
E1
Heat generating equipment
(boiler / heat exchanger)
E2
Load (space)
LPB Data bus
M1
Heating circuit pump/circulating pump
N1
Controller RVL470
Y1
Heating circuit mixing valve
Plant type
1
2
3
4
5
6
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CE1P2522E / 30.03.2000
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