Appendix
40 Installation and maintenance instructions MicraCom 0020289288_02
Appendix
A Inspection and maintenance work
The table below lists the manufacturer requirements with respect to minimum inspection and maintenance intervals. If na-
tional regulations and directives require shorter inspection and maintenance intervals, you should observe these instead of
the intervals listed. Each time inspection and maintenance work is carried out, carry out the required preparatory and com-
pletion work.
# Maintenance work Interval
1 Check the tightness of the air/flue pipe, make sure that it is not damaged
and has been attached correctly, and check that it has been set up cor-
rectly
Annually
2 Removing dirt from the product and the vacuum chamber Annually
3 Visually checking the condition of the heat cell, checking for corrosion,
rust or damage
Annually
4 Checking the gas connection pressure at maximum heat input Annually
5 Checking the CO₂ content Annually
28
6 Recording the CO
2
content (the air ratio) Annually
7 Check that the connections/electrical plug connections have been con-
nected correctly/function correctly (product must be voltage-free)
Annually
8 Check that the gas stopcock and service valves function correctly Annually
9 Cleaning the condensate siphon Annually
36
10 Cleaning the heating filter Annually
36
11 Checking the pre-charge pressure of the expansion vessel at regular intervals
35
12 Removing the compact thermal module at regular intervals
33
13 Cleaning the heat exchanger at regular intervals
34
14 Checking the burner and burner insulating mat for damage at regular intervals
34
15 Checking the insulating mats in the combustion area and replacing dam-
aged insulating mats
at regular intervals
16 Installing the compact thermal module at regular intervals
34
17 Checking the ignition electrode at regular intervals
35
18 Checking the filling pressure of the heating installation Annually
19 Run a function test for the product/heating installation and the domestic
hot water generation. If required, carry out purging.
Annually
20 Completing inspection and maintenance work Annually
37
21 Record all of the analysis results in the Benchmark Checklist in these
instructions
Annually
B Diagnostics codes
Note
Since the code table is used for various products, some codes may not be visible for the product in question.
Code Parameter
Values
Unit Increment, select, explanation
Factory
setting
Min. Max.
d.00 Maximum heating output
is fixed or adjusts auto-
matically
– – kW The maximum heating output varies depending on
the product.
→ Section "Technical data"
Au = Automatic: Product automatically adjusts the
maximum output to the current system demand
Au =
Automatic
d.01 Pump overrun time in
heating mode
1 60 min Increment = 1 5
d.02 Maximum burner anti-
cycling time in heating
mode
2 60 min Increment = 1 20
d.05 Determined target heat-
ing flow temperature
Current value ℃ – –
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