Bosch Worcester Greenstar CDi Compact ErP Series - Pressure Gauge; Boiler Return Sensor (NTC); Drain Tap; Pressure Relief Valve

SERVICE AND SPARES
CDi Compact
ErP
- 6 720 813 276 (2015/07) 55
7.8.21 Pressure gauge
▶ Ensure that the boiler is fully drained.
1. Carefully prise the lugs apart.
2. Remove the pressure gauge.
3. Withdraw the spring clip from the pressure sensing head housing.
4. Remove the pressure sensing head and pressure gauge capillary
from the housing.
Fig. 107 Pressure gauge removal
7.8.22 Boiler return sensor (NTC)
▶ Isolate the boiler and ensure that the boiler is fully drained.
1. Withdraw the spring clip to release the sensor.
2. Pull the sensor down to remove from the housing.
▶ To refit follow the above actions in reverse.
Fig. 108 Boiler return sensor
7.8.23 Drain tap
▶ Ensure that the boiler is full drained down.
▶ The drain tap rotates anti-clockwise for a ¼ turn to open.
1. Rotate the drain tap fully anti-clockwise passed the ¼ turn stop point
to release.
2. Push in and withdraw from the housing.
Fig. 109 Drain tap
7.8.24 CH pressure relief valve
▶ Isolate the boiler and ensure that the boiler is fully drained.
1. Release the knurled connector from the bottom of the PRV.
2. Pull the captive clip to the left to release the PRV.
3. Pull the Central Heating pressure relief valve out of the housing.
▶ Replace in reverse order, secure with the clip and mounting screws.
Fig. 110 PRV
6720813277-16.1Wo
2.
4.
3.
1.
6720646608-59.1Wo
2.
1.
6720813276-18.1Wo
1.
2.
6720646608-54.1Wo
1.
2.
3.