Buderus Logano GE434 Maintenance Instructions Manual page 23

Heating system start-up
! Check which main gas nozzles suit the mains gas
supply: Check for gas characteristics with your gas
supply company and observe the details in Table 11,
page 22 and Tab. 12.
! Ensure that the designation of the main gas nozzles
(Fig. 6) correlates to Table 12), and convert to a
different gas type, if necessary (see "Converting the
boiler to a different gas type", page 48).
SYSTEM DAMAGE
through incorrect main gas nozzles.
! Only commission the gas burner with
CAUTION!
correct main gas nozzles.
! Ensure that the correct main gas
nozzles have been used.
! If necessary, change the gas type see
Chapter 9 "Converting the boiler to a
different gas type", page 48.
RISK TO LIFE
from risk of electric shock.
! The installation, repairs, electrical
WARNING!
wiring, the initial start-up, the mains
electrical connection as well as
maintenance and service work must
only be carried out by a competent,
authorised specialist.
! Ensure that, during any work of that
nature, all current technical rules and
local regulations are applied.
The following applies to Belgium (BE):
Only Buderus service engineers may carry out a
conversion to another gas type.
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
2
Fig. 6 Checking the main gas nozzle
Item 1: Short version (natural gas L (G25), S (G25.1))
Item 2: Long version (natural gas H (G20), GZ50 or LPG)
Main gas nozzle designation
Natural gas Natural gas
H (G20) L (G25)
GZ 50 S (G25.1)
295 340
Tab. 12 Main gas nozzle designation
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
6
1
LPG LPG
Propane B/P (G30)
P (G31)
190 180
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