41
2000225065A
14.27 Filling Loop Valve.
For access, refer to section 14.1.
Refer to section 12.10 and drain the boiler hot water circuit.
Refer to diagram 14.22.
Remove the clip securing the filling loop valve to the domestic
water filter housing. Disengage by pulling forward.
Remove the clip securing the filling loop to the filling loop valve.
Remove the filling loop valve from the filling loop.
Fit new ‘O’ rings.
After replacing the filling loop valve open the cold water isolation
valve and slowly open a hot water tap to remove air. Close the
hot water tap and check for any leaks.
14.28 Automatic Bypass Valve
For access, refer to section 14.1.
Refer to section 12.9 and drain the boiler heating circuit.
Refer to diagram 14.21.
Remove the retaining clip to remove the bypass valve.
Fit new ‘O’ rings.
Replace the bypass valve, refill, vent and pressurise the boiler.
Adjust the bypass as described in commissioning, see section
11.6.
Check for leaks.
14.29 Reduced Pressure Zone Valve
For access, refer to section 14.1.
Refer to diagram 14.23.
Refer to section 14.26 to remove the filling loop
Remove the retaining clip to remove the reduced pressure zone
valve.
Fit new ‘O’ rings.
Replace the reduced pressure zone valve, refill, vent and
pressurise the boiler.
Check for leaks.
14.30 Domestic Cold Water Inlet Filter
For access, refer to section 14.1.
Refer to section 12.7.
Fit new ‘O’ rings.
14 Replacement of Parts
Diagram 14.19
FLOW
SENSOR
Diagram 14.20
LOW WATER
PRESSURE SENSOR
Diagram 14.21
BYPASS TUBE
ELECTRICAL
LEAD AND PLUG
Diagram 14.22
FILLING LOOP
TUBE
FILLING LOOP
VALVE
RETAINING
CLIP
RETAINING
CLIPS
AUTOMATIC BYPASS
VALVE
RETAINING
CLIP
11474
11476
11494
11497
