Baxi Combi 130 HE Installation And Servicing Instructions page 27

Temperature
Control Buttons
o
C
Reset
Fig. 35
o
C
Reset
Fig. 37
On/Off/Reset
Button
Supplied By www.heating spares.co Tel. 0161 620 6677
o
C
Reset
Fig. 36
o
C
Reset
Fig. 38
10.0 Commissioning the Boiler
10.2 Increasing Central Heating Output
To 100,000 Btu/hr
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) While On or OF is shown on the display ie: no
CH or DHW demand ongoing. Depress the "+"
and "-" Temperature Control Buttons at the same
time for 5 seconds. The display will show "18"
(Fig. 35) where the "1" indicates that the installer
parameter for range rating has been accessed
and the "8" indicates that the boiler is presently
set for a maximum Central Heating output of
80,000 Btu/hr.
b) Press the "-" Temperature Control Button so
that the display shows "10" (Fig. 36) with the "0"
indicating that the boiler is set for a maximum
Central Heating output of 100,000 Btu/hr. 1
minute after the parameter has been set the
display will revert to normal operation.
NOTE: The boiler will need to run in CH for 30
minutes after this is done to change to 100,000
Btu/hr. i.e. Turn all CH controls to max and ensure
no DHW demand is activated, during this setting
period.
To extract 100,000 Btu/hr from the boiler an extra
pump will need to be fitted to the system (see the
electrical installation section of these instructions).
10.3 Switching Off The Intelligent Pre-
heat
1. The boiler includes an intelligent pre-heat
feature. This feature ensures that the domestic
hot water to the tap is pre-heated when, and only
when, the user required domestic hot water the
previous week. For example, if the user only
requires hot water between 7.00am and 8.00am
on Monday then the boiler will log this demand
and then the next week will only pre-heat
between 7.00am and 8.00am on Monday. During
the first week of operation from power on no pre-
heating will occur.
2. The pre-heat switches the boiler on for
approximately 1 minute every 40 minutes
whenever it is required.
3. The boiler is factory set with the pre-heat
feature on. If the user wishes to disable this
feature then depress the "+" and "-" Temperature
Control Buttons at the same time for 5 seconds.
The display will show "18 or 10" (Fig. 35 or 36).
Press the Summer/Winter Mode Button marked
( ) and the display will show "21" (Fig. 37).
The "2" indicates that the installer parameter for
pre-heat has been selected. The "1" indicates that
the pre-heat is switched on.
4. Press the "-" Temperature Control Button to
change this to "20" (Fig. 38), with the "0"
indicating that the pre-heat is switched off. One
minute after the parameter has been set the
display will revert to normal operation.
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