ESIE09-08B 3-Way Valve
Appendix 263
8.3 How to Verify If 3-Way Valve is Installed Correctly
Caution Switch off power before working on the unit but make sure the valve motor is not moving.
Separate the
3-way valve
motor from the
body
1. Check the installed motor position.
A. Middle position (= factory position, in case
no power has been applied to the valve yet)
B. Left position (= space heating)
C. Right position (= domestic hot water)
Be sure the knob is pushed in completely.
2. Remove the knob without changing the
position.
3. Unscrew the motor from the body. Watch out
for not losing the
screw.
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