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To clean the inside of the siphon, remove it
and turn it upside down to remove any dirt.
Fig. 10.14
10.10 Visual inspection of appliance
Visually inspect all water joints, seals and
connections for any evidence of leakage
and retighten, grease or replace them as
necessary.
10.11 Checking the gas supply
pressure
Check appliance for gas tightness.
Re-check operational pressures as de-
scribed in section "Checking the gas supply
- 78 -
MAINTENANCE
pressure" on page 58 of this manual.
10.12 Water inhibitor concentration
Where chemical products are used the level
of water treatment should be checked on an
annual basis and re treated after full or par-
tial drain down.
A conductivity meter can be used to check
the correct concentration of inhibitor in the
heating water.
10.13 Setting the boiler flue sweep
27
With the boiler set in flue sweep mode, it is
possible to exclude some boiler automatic
functions making check and control opera-
tions easier.
• Enter in "programming mode" by sequen-
tially pressing and holding in keys, 9 - 10
and then 11 (Fig. 10.15) for 10 seconds
until the letters Pr that alternate with code
01 are displayed on the LCD display, in-
dicating that "parameter 01" (Fig. 10.16)
has been activated.
Fig. 10.15
function
12
9
11
10
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