132 NPE Service Manual
Figure 33
5. Remove the 2 stainless steel clips from the water adjustment
valve connections.
Figure 34
6. Remove the water adjustment valve.
7. Replace with the new water adjustment valve.
8. Place the 2 stainless steel clips back onto the valve
connections. Ensure that the clips are securely holding the
connection together to prevent leaks.
9. Reattach the water adjustment valve wire connectors.
10. Turn on water supply, power supply, and gas supply to the
unit.
11. Open a hot water tap and ensure there are no leaks at water
adjustment valve connections.
7. Remove the 3 buffer tank screws and pull out the buffer tank
Figure 32
8. Replace with new 2-way valve.
9. Place the 2 round stainless steel clips and 2 flat stainless clips
back onto the 2-way valve connections.
10. Replace the 4 buffer tank mounting screws.
11. Reconnect the wiring connector at the 2-way valve.
12. Place the front panel back onto the unit using 4 screws.
13. Turn on water supply, power supply, and gas supply to the
unit.
14. Open a hot water tap and ensure there are no leaks at the
water heater.
6.2.13 Water Adjustment Valve
1. Turn off the gas supply to the unit.
2. Disconnect the unit from the power supply.
3. Turn off the water supply to the unit. Drain all water from the
appliance.
4. Disconnect the mixing valve wire connector.
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