Buderus Logano GA244 Installation, Operation And Maintenance Manual page 39

Maintenance
4. Disconnect gas pilot line (Fig. 32, Item. 1) from gas
control (Fig. 32, Item. 9)
5. Label the flame roll-out switch wires (Fig. 32,
Item. 2) and disconnect the wires from the flame
roll-out switch (Fig. 32, Item. 3).
6. Disconnect gas control valve wires (Fig. 32, Item. 4)
from the gas control valve (Fig. 32, Item. 7).
7. Secure gas supply pipe (Fig. 32, Item. 5) with a
cable or rope around the gross control bracket.
8. Disconnect union (Fig. 32, Item. 6) between the gas
valve (Fig. 32, Item. 7) and the main gas supply pipe
(Fig. 32, Item. 5). Place the gasket from the union in
a safe position.
DANGER !
due to electricity .
z Label all wires prior to disconnection
WARNING!
when servicing controls. Wiring errors
can cause improper and dangerous
operation.
z Verify proper operation after servicing.
9. Loosen air intake hose (Fig. 32, Item. 8) and
remove from burner tray box
10. Remove the nuts (Fig. 33, Item. 1) that secure the
burner tray to the boiler and remove entire burner
tray (Fig. 33, Item. 3).
11. Remove inducer motor when boiler requires
cleaning; or go to 5.: "Cleaning of the gas burner",
page 42.
We reserve the right to make any changes due to technical modifications!
Installation, Operation and Maintenance Manual Sealed Combustion Gas Boiler Logano GA244 • Issue 02/2004
8
Fig. 32 Front view
Item. 1: Ignition cable
Item. 2: Flame roll-out switch cable
Item. 3: Flame roll-out switch
Item. 4: Gas valve cable
Item. 5: Gas supply pipe
Item. 6: Union
Item. 7: Gas valve
Item. 8: Air intake hose
Item. 9: Gas control module
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3
Fig. 33 Removal of the gas burner tray
Item. 1: Nuts
Item. 2: Union
Item. 3: Gas burner tray assembly
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
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