Inspection and maintenance
49
Condens 7000 FP – 6721846699 (2022/12)
The following components must be replaced after expiry of the specified
service life.
Table 14 Replacement according to service life
The replacement intervals specified are instructions of the component
manufacturer and serves to ensure the long-term technically flawless
state and high utilisation rate of the system.
Document replacement of components in the maintenance protocol.
DANGER
Danger to life from poisoning!
Disregarding the specified replacement intervals for gaskets in the flue
gas path (observe instructions of the flue gas system manufacturer) may
lead to life-threatening flue gases escaping.
It is essential to observe the prescribed replacement intervals
(manufacturer instructions) of the gaskets.
Gaskets must generally be replaced in case of damage or signs of
ageing, independent of the replacement interval.
Document the replacement of the gaskets.
DANGER
Risk to life due to poisoning by escaping flue gas!
The use of unsuitable lubricating paste when installing the flue gas
system may lead to destruction of the gaskets at a later time and thus to
gas escaping.
Use only lubricating paste which has been released by the
manufacturer of the flue gas system.
DANGER
Danger to life through escaping gases!
Always replace the electrode block gasket when replacing
electrodes.
Generally, replace damaged gaskets or ones that appear aged.
We recommend replacing the electrode block as part of annual
maintenance.
11.12 Refitting detached parts
11.12.1 Refitting parts removed
Refit all parts of the floor standing boiler that have been removed for
inspection and maintenance purposes in the reverse order of
removal.
Insert new gaskets when assembling the air/gas ratio control valve.
Make sure they are seated correctly.
Connect the compensation line and secure with hose clip.
Tighten the screws on the cover of the condensation catch pan with a
torque of 3.5 Nm.
NOTICE
Material damage due to incorrect or unconnected compensation
line!
If the wrong compensation line is used or if it is connected incorrectly,
this can cause overheating of the burner and unhygienic combustion.
Connect the compensation line correctly (page 71).
Check all gaskets for wear and damage.
CAUTION
Material damage and leaks due to power transmission!
When removing and installing the gas pipe, counterhold to avoid
subjecting other components to stress.
Observe the specified replacement interval for gaskets
( Chapter 11.11.4, page 48).
Replace gaskets if required.
Reconnect electrical push fit connections.
During commissioning, make sure that the fan is not covered.
Tightening torque
Table 15 Tightening torque
Component Replace according to specification,
depending on what occurs first
Replace after
service life of x
years
Replace after y
boiler starts
Mixture manifold gasket
(O-ring)
5–
Heat exchanger cleaning
cover gasket
5 –
Gasket of condensation
catch pan cleaning cover
5–
Fan including gaskets 10 –
Air/gas ratio control valve
including gaskets
10 500000
or following detection of fault by valve
testing system
Flue gas pressure limiter
with connecting hose
10 –
Differential pressure
sensor with connecting
hoses
10 250000
Water pressure relief
valve
10 –
Component Tightening
torque [Nm]
Screws on the mixture manifold / slide 15,5±10%
Nuts at the mixture manifold/front section 10-12
2” gas pipe union nut 115
Screws of the condensation catch pan cover 3,5
Cleaning access cover nuts 7
Gas valve/fan nuts 15
M8x35 screws on the gas valve flange 15,5±10%
Nuts for electrodes, burner rod 3±10%
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