Replacement parts
Greenstar 4000 – 6 720 891 162 (2020/09)
68
9.6
Replacing the gas valve
▶ Close the gas isolator.
▶ Unscrew the union nut [1].
▶ Remove the connector [2].
▶ Unscrew the union nut [3].
▶ Remove the union nut and hose connection [4] from gas valve.
▶ Remove the 2 screws [6].
▶ Remove the gas valve [5].
Fig. 92 Removing the gas valve
▶ Install the gas valve in reverse order, and check the gas/air ratio.
9.7
Replacing the expansion vessel
▶ Disconnect the pipe union nut [3].
▶ Slacken the screws on the clamps, top [1] and bottom [2] of the
expansion vessel.
▶ Slide the expansion vessel [4] towards you to remove.
Fig. 93
▶ Replace the expansion vessel in the reverse order
9.8
Replacing the PRV
▶ Unscrew the knurled nut of the PRV discharge pipe.
▶ Disconnect the PRV discharge pipe prior to removing the PRV.
▶ Remove the PRV in the sequence shown.
– Release the clip.
– Pull the PRV forward to release.
Fig. 94 PRV removal
▶ Replace the PRV in the reverse order
9.9
Replacing the pressure sensor
Pressure sensor is a wet pocket sensor, therefore the appliance must be
drained down.
▶ Remove the pressure sensor in the sequence shown.
– Release the electrical connection clip [1].
– Disconnect the electrical connection [2].
– Release the clip [3].
– Pull the pressure sensor forward to release [4].
Fig. 95 Pressure sensor removal
▶ Replace the pressure sensor in the reverse order
0010035125-001
1
2
3
6
5
4
0010036564-001
2
3
1
4
1.
2.
0010036566-001
0010036565-001
3.
4.
2.
1.
