Atag Q 25S User Manual

Installation & Servicing Instructions ATAG Q-Series
35
Make sure that during retting of the clamping rods, they are put into the
correct position. They should be turned vertically.
Ignition electrode
The replacement of the electrode is only necessary when the electrode is worn off.
This can be checked by measuring the ionisation current. The minimum ionisation
current has to be higher the 4µA on full load.
If the viewing glass is damaged the complete electrode must be replaced.
Replacement goes as follows:
- remove the electrical connections of the electrode;
- press the clips on both sides of the electrode to both sides and remove the complete
electrode;
- remove and replace the gasket;
Retting of the components is done in reverse order.
Siphon and condensate tray (see g. 21 and 22)
Step 1: Siphon
- rst remove the condensate cup (7);
Check this for pollution. If there is no sign of strong pollution it is not necessary to
clean the condensate tray (Go to Step 3). If there is strong pollution in the cup it
is necessary to remove and clean the condensate tray according Step 2;
- remove the inner siphon pipe (8) which remains in the condensate tray;
- check the O-rings of the cup as well as those from the pipe and replace if necessary;
- clean both parts by ushing it with clean water;
- grease the O-rings again with acid free O-ring grease to make tting easier;
- if there is a leak at the condensate cup (7) or tray (9) the complete condensate
trap unit (10) has to be replaced by S4451610;
Step 2: Condensate tray
- remove the plug from the ue gas sensor if present;
- turn the two short clamping rods (11 and 12) ¼ turn and remove them by pulling
them forward; Note the correct turning direction (red indicator, g. 22);
- lift the exhaust pipe (13) out of the condensate tray (14);
- press the condensate tray (14) carefully downwards and remove it by pulling it forward;
- replace the gasket between condensate tray and heat exchanger by a new one;
- clean the condensate tray with water and a hard brush;
- check the condensate tray on leaks.
Step 3: Retting is done in reverse order.
Note that all gaskets seals completely.
Make sure that during retting the clamping rods they are put in the right
position. They should be turned vertical.
Always replace all removed gaskets of dismanteled parts during the
maintenance activities.
Put the boiler into operation and check the CO
2
/O
2
(see page 32).
Condensatetray figure22
Siphon figure21
11
12
13
14
7
8
9
10

Atag Q 25S Specifications

General

Brand	Atag
Model	Q 25S
Category	Boiler
Language	English