Viessmann Vitocrossal 300 Installation Instructions For Contractors page 11

Assembly after dismantling
3.
6.
A
5.
1.
Fig. 8
Combustion chamber module
A
Heat exchanger module
B
!
Please note
Scratches on parts that come into contact with
flue gas can lead to corrosion.
Never place tools or other objects inside the
combustion chamber.
1. Undo nuts and screws in the boiler body and
remove the combustion chamber module.
2. Check that the silicone packing cord is seated cor-
rectly all the way round. The cord must be right
next to the limiting ring
seating of the cord and fix in place with "Gasket
Seal" (high temperature sealant, accessory).
3. Position the combustion chamber module against
the boiler body and secure at the top with
M 16 x 50 screws and nuts.
(cont.)
1.
2.
2.
D C
D . If required, correct the
7.
B
4.
Silicone packing cord
C
Limiting ring
D
4. Insert the gasket into the joint on the water side
between the boiler sections. Connect flanges with
nuts and bolts.
5. Secure the combustion chamber module at the
bottom with M 12 x 45 screws and nuts.
6. Tighten combustion chamber module
Torque of top M16 screws 60 Nm.
Torque of bottom M12 screws 50 Nm.
Torque of flange screws 50 Nm.
The spacers ensure the specified gap between the
modules is maintained.
Danger
Leaks can result in a risk of poisoning
through escaping gas.
Apply the gasket carefully.
.
A
11