Flue Gas Measuring Mode; Boiler Faults - Siemens Synco 700 Basic Documentation

Burner fault
86/238
Building Technologies
HVAC Products
6.8

Flue gas measuring mode

Flue gas measuring mode can be triggered either via a digital input ( ...Inputs > Flue gas
measuring mode ) or operation.
Main menu > Boiler > Flue gas measuring mode
Operating line
Preselection
Flue gas meas mode contact
Release stage 2/modulation
Actual value boiler temperature
Flue gas temperature
When the flue gas measuring mode is activated, boiler pump and peripheral devices
will be put into operation. The boiler is assigned a boiler temperature setpoint of 90 °C.
This value is limited by the maximum boiler temperature.
During the time the flue gas measuring mode is active, supervision of the maximum
permissible flue gas temperature will not lead to a plant stop. However, should the
maximum permissible flue gas temperature be exceeded, a fault status message will be
displayed.
The function will automatically be ended after 30 minutes.
6.9

Boiler faults

If a boiler initiates lockout, it will be shut down until the fault is rectified.
A boiler is considered faulty if one of the following faults occurred:
• Burner fault
• Boiler pump fault
• Fault of shutoff valve (no checkback signal)
• Maximum permissible flue gas temperature exceeded (if plant stop is required)
• One of the 3 digital fault inputs indicates a fault
• Faulty boiler temperature sensor
Main menu > Commissioning > Extra configuration > Boiler > Inputs
Operating line
Checkback signal burner
Checkb sign shutoff valve
Fault burner
Fault input 1
Fault input 2
Fault input 3
[Boiler pump] overload
[Boiler pump B] overload
Flow signal pump
The type of fault input can be parameterized at menu item ...Settings > Inputs at the
relevant terminal.
Main menu > Commissioning > Settings > ... or
Main menu > Settings > Inputs
Operating line
Normal position
A burner fault can be indicated by the burner fault input, or it can be generated when
there is no burner checkback signal from the controller.
The waiting time for the burner's checkback signal can be adjusted (signal delay).
Modular Heating Controller RMH760B
6 Boiler temperature control
Range
Off / On
0 / 1
Yes / No
Adjustable values / display / remarks
Range
Open / Closed
Factory setting
Off
Yes
Factory setting
Open
CE1P3133en
05.02.2007