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5
System maintenance
This chapter explains, why regular maintenance is important for your
system. It will also indicate to you, how you can check and regulate the
water pressure.
CAUTION: System damage through inadequate
cleaning and maintenance.
▶ Have your system inspected, cleaned and maintained
annually by a specialist contractor.
▶ We recommend you enter into a contract covering an
annual inspection and maintenance on an "as-
required-basis".
Observe the separate maintenance instructions for maintenance work
on the neutralising system. Only specialists should carry out work on the
neutralising system.
5.1
Why is regular maintenance important?
You should have your system regularly serviced for the following
reasons:
• to maintain the highest level of efficiency and to operate the system
economically (low fuel consumption),
• to achieve a high level of operational reliability,
• to maintain the highest level of environmentally responsible
combustion.
5.2
Ordinary analysis and checking, frequency and
sampling points
The following symbols and terms are used to identify sampling
frequency and the location of sampling points:
Symbols and terms
Frequency of
A - Twice a year, in the season in which the heating
analysis
system is in use
B - Once a month
C - Once every 15 days
D - Once a week
Sampling points 1 - Filling water
2 - Filling and/or refilling water
3 - Water in the boiler or heating circuit
Table 4
Stainless Steel Condensing Boiler - SB625WS / SB745WS
Type of system
Hot water heating
analysis and checks
system
Appearance
2A-3A
pH
3A
Total hardness
2B
Fixed residues
Electrical conductivity
Iron
3A
P-alkalinity
Chemical conditioner 3A
Copper
3A
Table 5
System maintenance | 9
Notes
Electrical conductivity
measurement can be
used instead
Fixed residue
measurement can be
used instead
6 720 805 220 (2012/10)
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