Bosch KBR28-3A - Installing a LWCO device - removing dummy plug; Installing a LWCO device - securing with a clip

Installation
37
Greenstar FS/Combi FS – 6 720 810 590 (2020/04)
▶ Disconnect the boiler from power by shutting off the emergency
switch or disengaging the heating system circuit breaker.
▶ Drain the boiler.
1. Remove the safety clip from the dummy plug in the supply pipe.
2. Pull off the dummy plug and place with the boiler documentation.
▶ Ensure the O-ring remains in place on the pipe.
▶ Lubricate the O-ring.
Fig. 23 Installing a LWCO device - removing dummy plug
▶ Screw the LWCO as far as possible into LWCO adapter located in the
boiler accessory kit. Follow the Hydrolevel Safgard 1100
instructions.
Fig. 24 Installing a LWCO device - LWCO adapter
1. Push the adapter with the LWCO onto the pipe
2. Secure with the clip
Fig. 25 Installing a LWCO device – securing with a clip
▶ Connect the wires of the LWCO ( Section 7.1.9).
The LWCO is positioned upright for technical reasons.
Tests have shown that all air will bleed from the pipe during
commissioning and full functionality is established.
If fault d3 is displayed when commissioning the boiler, purge the boiler
properly and check the boiler water pressure.
6720810590-52.2Wo
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6 720 641 933-64.1O
6720810590-53.2Wo
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