barbas BOX 20 52, Installation And Maintenance Manual

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7. Put a flexible aluminum pipe in the hole.
8. Install a grate in the hole in the outer wall and attach the flexible aluminum pipe to it.
9. Attach the other end of the flexible aluminum pipe on the collar adapter. Use a hose
clamp.
5.4 Connect the optional external air supply (bottom connection)
Note:
• The appliance has the possibility to connect a supply pipe for external
combustion air. During operation the appliance gets combustion air from
this air duct. The appliance however, is not a room-sealed appliance
according to the requirements for room-sealed appliances.
• The external air supply connection is only available when ordered with the
appliance.
• It is strongly recommended to install a valve in the external combustion air
supply pipe, to avoid debris in the pipe and to avoid water vapor
condensation in the appliance when not in use.
1. Remove the round break out plate at the bottom of the appliance with a hammer.
2. If necessary, put the collar adaptor in the open external air inlet opening.
3. Bend out the 3 lips on the collar adaptor to attach the collar adaptor on the inlet
opening.
4. Identify the location in floor for the external combustion air supply inlet.
5. Make a hole in the floor with at a minimum diameter of 80 mm.
6. Put a flexible aluminum pipe in the hole.
7. Attach the other end of the flexible aluminum pipe on the collar adapter. Use a hose
clamp.
Installation
Box 20 52 21