Technical information
2
5517 914 - 01
Vitorond 100 Direct Vent Systems Installation
Installation
General Information
IMPORTANT
WARNING
Viessmann will not assume any responsibility for
possible effects of an obstructed air intake or
exhaust termination.
Boiler model VR1 -22 -27 -33
Rear
Sides
Flue
in.
(mm)
in.
(mm)
in.
(mm)
6
(150)
0
0
1
(25)
6
(150)
0
0
1
(25)
6
(150)
0
0
1
(25)
Floor Combustibles
Boiler model VR1 -22 -27 -33
Rear
Sides
Flue
Top
in.
(mm)
in.
(mm)
in.
(mm)
in.
(mm)
6
(150)
0
0
1
(25)
6
(150)
6
(150)
0
0
1
(25)
6
(150)
6
(150)
0
0
1
(25)
6
(150)
Floor Combustibles
Standard installation
Alcove installation
The insulated oil direct vent system is rated for a 1”
clearance to combustibles.
Advise owner to keep direct vent termination and air
intake free of debris, snow and ice.
Note: Surface discoloration on the outside of the building
may occur if the burner is not properly adjusted.
Viessmann will not accept any responsibility for
such discoloration.
Note: Direct Vent exhaust system operates under a
positive pressure developed by the burner. Make
sure all vent connections and observation port
on the boiler are sealed air-tight by tightening
screws and using high temperature silicone sealant
if necessary.
Note: The vent components must be supplied without any
alteration except for the length of the flex pipe to
be cut to the desired length.