Buderus Logamax plus GB162-80 kW - Page 6

3
Gas valve replacement
Logamax plus GB162-80 kW/100 kW - We reserve the right to make any changes due to technical modifications!
6
B Loosen both retaining clips on the burner cover
(Æ fig. 6).
Fig. 6 Opening the retaining clips
B Remove the burner cover together with the fan unit and
the gas valve (Æ fig. 7).
Fig. 7 Removing the burner cover with the gas/air unit
B Undo the three screws (Æ fig. 8, [1]) and remove the
gas valve with the venturi from the fan unit
(Æ fig. 8, [2]).
B Take the gas valve and venturi from the box.
Fig. 8 Removing the screws and gas valve with venturi
B Install the venturi and gas valve on the fan unit using a
new O-ring (Æ fig. 9) and follow the instructions above
in reverse order.
Fig. 9 Placing a new O-ring on the fan unit
B Install the gas flange from the natural gas assembly on
the new gas valve (Æ fig. 10, [1]), insert the O-ring
(Æ fig. 10, [2]) supplied.
Fig. 10 Installing the gas flange
Thermal
power
gas
boiler
Type of
gas
supply
Altitude
in ft (m)
Gas orifice
diameter in
mm (inch)
Venturi
article
number
GB162-
80 kW/
100 kW
Natural
gas
0 - 4,000
(0 - 1,220)
8.40
(0.331)
73983
Tab. 1 Gas orifice diameter
6720615033-007.1TD
6720615033-008.1TD
1
2
6720615033-009.1TD
6720615033-013.1TD
6720615033-014.1TD
1
2