44
FA ROTEX A1 BOe - 02/2014
9
x
Service and maintenance
6. Regenerating the condensate box.
Ɣ
Rinse condensate box with flowing water against the flow
until clear water emerges (fig. 9-8). The condensate box
must be shaken in order to dislodge the deposits.
Ɣ
If the neutralising agent is used up, pull off the connection
sleeve (fig. 9-5, pos. 1) from the condensate drain and
replace the neutralisation agent via this connection.
7. Check the flexible connector hose and drain connector and
clean if necessary.
8. Push condensate box under the boiler.
9. Plug flexible connector hose onto the condensate box
(see fig. 4-11).
10. Place the connection sleeve (fig. 9-5, pos. 1) firmly on the
condensate plug connection at the flue gas elbow.
11. Rotate the stabilising plate downwards and snap into place.
12. Close and tighten fixing belt (see fig. 9-4, pos. 3). Tighten the
belt so much that the wrapped connection cannot loosen itself
(insert a wedge if necessary).
13. Fill condensate box with water (see chapter 4.7 "Connect the
condensate drain").
9.2.4 Checking the flue gas temperature
The flue gas temperature can be checked
– on the operating panel in the boiler control panel, rotary
switch in position:
"Info"
,
– on the measuring piece of the flue gas pipe by using a flue
gas thermometer.
If the flue gas temperature exceeds the boiler temperature by
over 20 K after 10 mins. of burner operation, the combustion
chamber will have to be cleaned (see section 9.2.5).
Checking the flue gas temperature sensor
Ɣ
Unscrew the box nut (fig. 9-10, pos. 4) and pull out the flue
gas temperature sensor carefully with the guide sleeve
(fig. 9-10, pos. 3).
Ɣ
Check the flue gas temperature sensor for cleanliness and
corrosion and clean if necessary. Do not use any metallic
cleaning devices (e.g. wire brush).
Ɣ
When replacing the flue gas temperature sensor, ensure that
the end of the flue gas temperature sensor projects
28
±
2 mm
out of the guide sleeve.
Fig. 9-8
Rinse condensate box
Fig. 9-9
Snap stabilising plate into place
CAUTION!
The fitting position of the flue gas temperature sensors
is factory-adjusted by a fixing screw. Modifying the
fitting position adversely affects the correct functioning
of the flue gas temperature sensor.
Ɣ
Never loosen the fixing screw (fig. 9-10, pos. 2)
when inspecting the flue gas temperature sensor.
1
Sensor cable to the boiler control panel
2
Fixing screw - Do not loosen!
3
Guide bush
4
Union nut
5
Flue gas temperature sensor
Fig. 9-10 Position of the flue gas temperature sensor
