Access To The Water Circuit; Drain Down; Removing The 3 Way Valve; Removing The 3 Way Valve Shutter - Ariston Benchmark System A 24 RFF Installation And Servicing Instructions

18.3 Access to the Water Circuit

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

18.3.1 Drain down

Close the flow and return isolating valve and open the pressure relief valve.

18.3.2 Removing the 3 way valve

1. Carry out step 1.2.1 and 1.2.3;
2. Remove the clip "Q1" from the by-pass tube ( );
see fig. 87
3. Remove the clip "Q2" and "Q3" from the heating return and the pump ( );
see fig. 88 & 89
4. Remove the two T25 screws "P1" ( );
see fig. 87
5. Remove the 3 way valve body pulling it toward you ( );
see fig. 90
6. Reassemble in reverse order;
P1
Q2
Q1
Fig. 87
Fig. 88
Q3
Fig. 90
Fig. 86
Fig. 89

18.3.3 Removing the 3 way valve shutter

1. Carry out step 1.2.1 and 1.2.3; 3. Remove the 3 way valve shutter 4. Reassemble in reverse order;
2. Unscrew the two CHC screws pulling it up (see fig. 92)
"R"(see fig. 91);
R
fig. 91
fig. 92
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