Buderus Logano GE434 Maintenance Instructions Manual page 29

Heating system start-up
Function checks
During commissioning and the annual inspection, check
all regulating, control and safety equipment for correct
function and correct adjustment, where applicable.
Checking the high limit safety cut-out (STB)
See control device documentation.
Checking the ionisation monitoring
PLEASE NOTE
We recommend the use of an ionisation
lead set from Buderus.
1. Simulating faults:
! Disconnect the heating system from the mains
electrical supply, e.g. emergency stop switch of the
heating system upstream of the boiler room.
! Remove the contact protector (Fig. 11, Item 2) from
the monitoring lead (Fig. 11, Item 1) and release the
plug-in connector.
! Re-connect the heating system to the mains
electrical supply, e.g. switch ON the heating system
emergency stop switch.
The solenoid valve opens after approx. 12 seconds
(recognised by a quiet audible click).
Approx. 10 seconds later (for analog burner control
units) and approx. 20 seconds later (for digital burner
control units), the burner must change over to a fault
condition, i.e. the indicator lamp on the rest button lights
up.
We reserve the right to make any changes due to technical modifications.
Commissioning and maintenance instructions Logano GE434 Gas-fired special boiler • Issue 02/2003
Fig. 11 Remove the contact protector
Item 1: Monitoring lead
Item 2: Contact protector
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
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