Atag XL70 - 13.3 Maintenance activities

Installation & Servicing instructions ATAG XL
54
13.3 Maintenance activities
Required tools:
- Cross head screwdriver
- ATAG T-handle key set with 3 bits (hex key 4mm, hex key 5mm and cross head PZ2)
- Open end wrench 8mm
The following actions have to be taken in order to be able to carry out maintenance:
- Switchthedeviceo󰀨usingthemainsswitch,
- Close the gas tap;
Refertogure13.3.a:
- Unscrew the 4 screws of quick-locks A, B, C and D
- Open the 4 quick-locks A, B, C and D and remove the housing (= air box) from the
front.
Dismantletheinternaluegaspipeasfollows(refertog.13.3.b):
- Unplugtheuegassensoriftted;
- Pressthe2clipsofthesiphonadapter(F)andpushthatpartoftheuegasventpipe
(E) down. Leave the siphon adapter (F) hanging on the bottom plate
- Slidetheslider(G)intheupperpartoftheuegaspipeupward.
- Pulltheuegaspipe(E)forward(bothexchangerssimultaneously).
Ventilator unit and burner cassette (refer to g. 13.3.c, d and e)
- Remove the plug connections of the gas valve (1) and ventilator (2);
- Unscrew the coupling (3) of the gas unit;
- Replace the gas valve gasket with a new one;
- Unscrew the front cross-slotted screw (4) of the air suction damper (5);
- Loosen the left (9) and right (10) clamp bar a quarter of a turn with the hex key and
pull it out in a forward direction. In doing so, pay attention to the turning direction (red
check cams);
Removing housing gure 13.3.a
Removing ue pipe gure 13.3.b
F
G
E
gure 13.3.c
2
1
3
10
8
12
7
5
9
4
5