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12
Inspection and maintenance
12.2
Inspection and maintenance work steps
No. Activity
Check the air flue gas installation for leaks and for proper fixation and ensure it is not blocked
1
or damaged and is fitted correctly, complying with the relevant installation instructions.
2
Carry out a general inspection of the boiler for dirt and dust and clean as necessary.
Visually inspect the complete heat engine for its general condition and for signs of corrosion,
3
sooting or other forms of damage (paying particular attention to the burner door seal). If dam-
age is evident proceed to column 2.
Measure the gas flow rate during operation with maximum load (¬ section 10.12.3). If the gas
4
flow rate complies to the ¬ tab. 10.2 continue with column 1, if not proceed to column 2.
Check the gas inlet working pressure (¬ section 10.12.4) operation with maximum load. If the
5
gas inlet working pressure complies to the ¬ tab. 10.3 continue with column 1, if not proceed
to column 2.
Check combustion by measuring CO, CO
6
tole rances of ¬ tab. 12 proceed to maintenance column 2. You must not proceed with the
maintenance if a new burner door seal kit is not available.
Isolate the boiler from the power mains. Check whether the electrical plug connections and the
7
other electrical connections are fitted tightly and correct them if necessary.
8
Close the gas isolation valve and the service valves.
Drain the pressure in the boiler on the water side (observe pressure gauge) and check the
9
charge pressure of the expansion vessel. Top up if necessary.
Check the charge pressure in the expansion vessel of the layered storage tank. Correct the
10
pressure if necessary.
11
Remove the compact thermal module.
Check the integrity of all combustion circuit seals, especially the burner door seal. Ensure any
12
damage found is repaired before proceeding.
13
Clean the heat exchanger (¬ section 12.4.2).
14
Check whether the burner is dirty and clean it if necessary.
Check the condensate siphon in the boiler, clean and fill. Flush through all discharge pipe work
15
(ensure route and termination are correct and it is unlikely to freeze up in severe weather).
16
Install the compact thermal module. Caution: Use new seals and nuts!
Replace the hot water heat exchanger if the volume of water is insufficient or the outlet tem-
17
perature is not reached
Remove the impeller sensor, clean the filter in the cold water inlet of the sensor and refit the
18
sensor.
Open the gas isolation valve, reconnect the boiler with the power mains and switch on the
19
boiler.
Open the service valves and fill up the boiler/appliance to approximately 0,1 - 0,2 MPa (1,0 -
20
2,0 bar) (depending on the static height of the system). Start the bleeding program P.00.
Perform a test operation of the boiler and heating installation, including hot water generation
21
and bleed again if necessary.
22 Perform the gas family check (¬ section 12.1.5).
23 Check visually the ignition and burner performance.
Check the boiler for leaks of any kind (gas, flue gas, water, condensate) and rectify as neces-
24
sary.
If you had problems with the CO, CO
25
them again now ( ¬ tab. 12.1). If they are outside of the tolerances of ¬ tab. 12.1 make an
adjustment, see ¬ section 12.1.4.
Complete the Benchmark gas boiler commission service record on the back pages of this
26
manual.
12.3 Inspection and maintenance steps
62
and CO/CO
. If the values are outside the
2
2
, CO/CO
-values in Step 6 before the maintenance, check
2
2
Installation and maintenance instructions ecoTEC plus 0020134833_01
Column 1
Column 2
Inspection
Maintenance
must be car-
must be car-
ried out each
ried out at reg-
year
ular intervals
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