Bypass Valve; Access To Boiler Control Components - Worcester Greenstar CDi Compact Installation, Commissioning And Servicing Instructions

SERVICE AND SPARES
5. Remove the two screws securing the CH pressure relief valve
mounting.
6. Remove the screws securing the hydraulic block assembly.
1.
6.
Fig. 114 Hydraulic block

6.8.27 BYPASS VALVE

Remove the hydraulic block from the boiler.
1. Remove the clip on the return connection.
2. Remove the clip on the pump connection.
3. Remove the spring clip retaining the by-pass pipe.
4. Separate the return unit from the flow manifold.
5. Using a pair of pliers remove the by-pass valve.
1.
4.
2.
5.
3.
Fig. 115 Bypass valve
▶ When re-assembling, in reverse order, ensure that any seals that have
been disturbed are replaced.

6.8.28 ACCESS TO BOILER CONTROL COMPONENTS

1. Release the three captive screws retaining the installer access cover.
2. The access cover can now be removed with the flap.
50
2.
3.
4.
6.
5.
1.
Fig. 116 Installer access cover
PCB FUSE
The fuse is located next to the high voltage connectors and the spare
fuse (1) is located on the back of the access cover.
To remove the fuse:
1. Push the top of the fuse holder up.
2. Rotate the top of the fuse holder anti-clockwise and remove.
1
1.
Fig. 117 Fuse holder
2.
2.
6 720 803 800 (2012/11)