14
1.5.11 Removing the D.H.W. probe
1.5.10 Temperature and pressure relief valve
This operation is possible with boiler fully assembled.
The D.H.W. probe access, is at the bottom right side
of the boiler:
1. Ensure electricity is switched of at main isolator.
2. Hold the D.H.W. probe spring and pull downwards
(see fig. 1.46)
3. Remove the spring (see fig. 1.47)
4. Disconnect the probe;
5. Replace with new D.H.W. probe;
6. Mount the spring;
7. Introduce new probe into its housing pushing
upwards;
8. Ensure the probe has reached the end of the
housing pushing firmly again.
1. Ensure electricity is switched off at main isolator;
2. Drain domestic water from cylinder;
3. Loosen nut “A6” and remove the 1/2” nipple
(see fig. 1.44);
4. Remove the valve by unscrewing in an anticlock-
wise direction (see fig. 1.45);
Fig. 1.47
Fig. 1.45
Fig. 1.44
Fig. 1.46
A6
