Baxi Combi 133 HE Plus Installation & Servicing Instructions Manual page 32

Remove the Red
Jumper labelled
CN12
Fig. 35
32
© Baxi Heating UK Limited 2005
Facia Box
PCB Connection Cover
PCB
10.0 Commissioning the Boiler
10.2 Increasing Central Heating Output
To 100,000 Btu/hr (Fig. 35)
(Combi 133 & 100 HE Plus only)
1. The boiler is factory set for a maximum output of
80,000 Btu/hr. The boiler will automatically vary its
output to match the system load giving the most
efficient use of gas and the most comfortable room
temperature possible.
2. If the CH system is greater than 80,000 Btu/hr then
to increase the maximum output of the boiler to
100,000 Btu/hr proceed as follows:
a) Isolate the mains supply to the boiler.
b) Remove the outer case.
c) Lower the hinge down facia box.
d) Remove the PCB connection cover.
e) At the extreme left hand side of the PCB there are
two jumpers. Remove the red one labelled CN12.
3. Reassemble in reverse order.