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Set-up
Burner Set-up - Oil
Fig. 10
Connect oil supply and return lines
Fig. 11
Converting two-pipe system to one-pipe system
12
(continued)
oil line from tank
to oil pump on burner
from oil pump on burner
recirculation to filter
4. Connect flexible oil lines to the filter
check valve assembly. See Fig. 10.
Red: supply (connection with the red
manual valve)
Blue: return (connection with the
check valve).
The Riello burner shipped by Viessmann
comes with the bypass plug already
installed, ready for two-pipe connection.
For a one-pipe system (gravity system
where the oil tank is above the burner)
use the copper tee provided. This tee
converts the two-pipe system to a
one-pipe system. The oil not used by
the pump recirculates into the supply
line. Pipe sealant must be used on the
threaded ends of the flare fittings which
join the copper tee to the filter check
valve assembly.
5. Install tee as shown in Fig. 11.
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