15.1.4 Checking Electrodes; 15.1.5 Burner Servicing - Bosch Greenstar Series Installation And Service Instructions For Contractors

Fig. 88 Removing the plate heat exchanger
▶ Install new plate type heat exchanger with new gaskets and reconnect
the hydraulic assembly in reverse order.
▶ Check all connections used during maintenance for leaks.

15.1.4 Checking electrodes

▶ Remove electrode set including gasket and check electrodes for
contamination; clean or replace, if required.
▶ Reinstall electrode set with new gaskets and check for leaks.
Fig. 89 Reinstalling the electrode set
Gas/Gaz?
Fig. 90 Check for leaks
Greenstar – 6721822579 (2021/01)
0010032724-001
2-1/4 + 3/4 ft.-lbf.
3 + 1 Nm
0 010 006 917-001
0 010 006 918-001

15.1.5 Burner servicing

DANGER
Fire danger!
▶ The burner may be operated only while installed in a wall-mounted
gas condensing boiler.
▶ Remove burner lid (steps 1 - 4).
2
1
Fig. 91 Removing the burner cover
▶ Remove burner and clean its components.
Fig. 92 Burner
▶ Reinstall burner in reverse order, including a new gasket if necessary.
▶ Adjust the gas-air ratio (page 62)
Inspection and maintenance
4
3
6 720 641 933-95.1o
7 181 465 330-08.2R
67