Quick Start Manual

11.0 Servicing the Boiler
29
11 .1 Annual Servicing
1. For reasons of safety and economy, it is
recommended that the boiler is serviced annually.
Servicing must be performed by a competent person.
2. After servicing, complete the relevant Service Interval
Record section of the Benchmark Commissioning
Checklist at the rear of this publication.
3. Ensure that the boiler is cool.
4.
Ensure that both the gas and electrical supplies to
the boiler are isolated.
5. Slacken the screws securing the facia panel. Lift the
outercase panel so that its securing tabs are clear of the
facia. Remove the panel (Fig. 39).
6. Remove the screws (2 on Instant 80e, 4 on Instant
105e) securing the inner door panel. Lift the panel
slightly to disengage it from the studs on top of the case
(Fig. 40).
7. Note the positions of the two sensing tubes on the
outlet elbow and three wires on the fan motor and
remove them (Fig. 41).
8. Slacken the screws on the outlet sealing collar. Ease
the collar upwards as far as possible (Fig. 41).
9. Remove the four screws securing the combustion box
door and remove the door (Fig. 40).
Fan Wires
Fan
b
br
H
+’ve
L
-’ve
g/y
Sensing
Tubes
Outlet Sealing
Collar
Combustion Box
Door
Inner Door
Panel
Case Front Panel
Ease Outlet Sealing Collar
Upwards
Fig. 39
Facia Panel Securing
Screws
Fig. 41
Combustion Box
Door
Inner Door
Panel
Fig. 40
Instant 80e
models
Instant 105e
models