Replacing The 3-Way Valve - DeDietrich Innovens MCA 15 Installation And Service Manual

MCA 15 - MCA 25 MCA 25/28 MI
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T002639-C
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Replacing the 3-way valve

If it becomes necessary to replace the 3-way valve, proceed as
follows:
1. Close the main water valve
2. Drain the boiler.
3. Remove the air vent hose above the siphon.
4. Remove the siphon.
5. Remove the clip holding the heating return hose in place on the
right side of the hydrobloc.
6. Remove the heating return hose on the right side of the hydrobloc
and not on the heat exchanger side (heating circuit).
7. Unplug the actuator.
8. Remove the clip holding the 3-way valve in place.
9. Remove the 3-way valve.
Lift and rotate by a quarter turn.
10.Proceed as for dismantling in reverse.
CAUTION
Be careful of the positioning cams on the 3-way valve.
7. Checking and maintenance
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