Ariston 47-116-15 Removing the gas valve, Removing the D.H.W. secondary exchanger

Removing the gas valve

1.Disconnect all the cables from the solenoid and modureg;

2.Remove the spark generator (see previous section);

3.Release the top nut “W” (FIG. 1.30);

4.Remove the screws “X” from the bottom of the gas valve pipe (FIG. 1.31);

5.Remove the gas valve (FIG. 1.32).

W

47.eps FIG. 1.30

X X

48.eps FIG. 1.31

38.eps FIG. 1.32

1.6ACCESS TO THE WATER CIRCUIT

Important! Before any component is removed, the boiler must be drained of all water.

Removing the D.H.W. (secondary) exchanger

1.Remove the screws “Y” (FIG 1.33 + FIG 1.34);

2.Push the exchanger towards the rear of the boiler, and lift upwards and remove out of the front of the boiler

(FIG 1.35);

3.Before replacing the exchanger ensure that the O-rings are in good condition and replace if necessary.

Y

22.eps FIG. 1.33

Y

21.eps FIG. 1.34

68.eps FIG. 1.35

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