Disassembling Of The Thermostatic Mixing Valve; Installation Of The Thermostatic Mixing Valve - Watts FlowBox HKF25 Series Installation And Operating Manual

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8.5 Disassembling of the thermostatic mixing valve

1. Disconnect the power supply and secure it against being
switched on again.
2. Remove the front panel of the pump group.
3. Close all stop valves by turning the thermometer handle.
4. Disassemble thermometer handles and intermediate
insulation.
5. Dismantle the thermostatic mixing valve (A) with tempera-
ture setting by loosening the union nuts (X).

8.6 Installation of the thermostatic mixing valve

1. Replace damaged or defective seals if necessary.
2. Insert the thermostatic mixing valve (A) and tighten the nuts
(X) (for tightening torques see "Technical data" on page 4).
3. Slowly open the ball valves by turning the thermometer
handle.
4. Restore the power supply to the pump group.
5. Disassemble the thermometer handles.
6. Install the intermediate insulation, the thermometer han-
dles, and the front panel.
HKF25-IM-DE-W-UK-11-2020-Rev.0 | Part no. 10027337
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