Cleaning The Burner; Cleaning The Heat Exchanger; Repairing Any Damage To The Coating Of The Heat Exchanger; Checking The Flow Switch - Vaillant MAG AT 11-0/1 GX H Installation And Maintenance Instructions Manual

Caution.
Risk of material damage caused by dam-
age to the heat exchanger.
Damage that occurs when installing and re-
moving the heat exchanger leads to prema-
ture wear.
▶
When installing or removing the heat ex-
changer, ensure that it does not become
damaged or bent out of shape.
▶
Remove the heat exchanger in the spe-
cified sequence.
1. Remove the bolts from the two retainers, which are
located on the side of the atmospheric sensing device.
2. Remove the retainer.
3. Unscrew the cap nuts from the hot water pipe and the
cold water pipe.
4. Unscrew the bolts from the clamps that are used to
install the hot water pipe and cold water pipe of the heat
exchanger to the back wall.
Applicability: MAG 11-0/1 GX
OR MAG 11-0/1 XI
▶
Remove the left-hand fastening from the heat ex-
changer.
Applicability: MAG 14-0/1 GX
OR MAG 14-0/1 XI
▶
Remove the left- and right-hand fastening from the
heat exchanger.
5. Remove the heat exchanger by pulling it forwards and
then upwards.
0020189893_03 atmoMAG Installation and maintenance instructions
Inspection and maintenance 7
7.6

Cleaning the burner

1. Use a brass wire-brush to carefully remove combustion
residues from the burner without damaging the burner.
2. Clean the jets, injectors and burner rails with a soft
brush and blow out any dust or dirt outside the install-
ation room from the outside to the inside using com-
pressed air.
3. If the burner is extremely dirty, clean it with soapy water
and rinse it thoroughly with clean water.
7.7

Cleaning the heat exchanger

1. Use a spray of water to rinse through the fins of the
heat exchanger.
2. Use a soft brush to remove the heavier soiling on the
fins of the heat exchanger.
–
Ensure that you do not bend the fins on the heat
exchanger.
3. If required/necessary, remove any grease and dust by
adding a fat-dissolving cleaning agent to a container of
hot water.
4. Use a commercial descaler to remove any limescale,
while taking into consideration the corresponding docu-
mentation.
5. Rinse the heat exchanger under running water.
7.8 Repairing any damage to the coating of the
heat exchanger
1. Use a Supral pen to repair minor damage to the heat
exchanger coating.
2. Ensure that the damaged area is free from deposits and
greasy residues.
3. Shake the Supral pen vigorously before use.
4. Apply the coating material thinly and evenly.
7.9

Checking the flow switch

2
1. Remove the cold water connection line from the cold
water connection (2).
2. Visually check the cold water filter that is downstream
from the cold water connection (2) for dirt and limes-
cale.
3. If the cold water filter is dirty or calcified, remove the
clamp (1) and pull out the cold water connection (2).
1
19