COSMOGAS CSG 160

14 - MAINTENANCE

Figure 14-6 Supply fittings removal (only for

160-C model)

14.9 - 3-way valve removal (only for

160-C model)

The 3-way valve, details “M” and “Q” in Figures 14-6 and 14-7, directs hot water produced by the primary heat exchanger to the heating circuit or to the secondary heat exchanger for the production of D.H.W. To replace or clean it, follow the steps below while referring to Figures 14-6 and 14-7:

1. follow the steps in Section 14.10 and 14-11 to isolate and drain the water from the boiler;

2. follow the steps in Section 14.2, to gain access the internal components;

3. disconnect fittings “A”;

4. remove screws “C”;

5. rotate “D” flange in the direction of the black arrow (See particular fig.

1);

6. remove the bracket “E”;

5. remove fitting “F”;

6. remove fitting “L”;

7. remove fitting “M” and check its state.

8. remove spring “N”;

9. remove servomotor “O”;

10. remove the fitting “P”

11. remove the spring “Q” and check for any dirt.

Figure 14-7 3-way valve servomotor removal

93