Securing The Burner To The Boiler; Nozzle; Recommended Nozzles; Nozzle Assembly - Riello RL 190/M Installation, Use And Maintenance Instructions

4.8

Securing the burner to the boiler

Disassemble the blast tube 9) from the burner 6) by proceeding as
follows (Fig. 13):
➤ Loosen the four screws 3) and remove the cover 1).
➤ Remove the screws 2) from the two slide bars 5).
➤ Remove the two screws 4) fixing the burner 6) to the flange 7).
➤ Withdraw the blast tube 9) complete with flange 7) and slide
bars 5).
3
4.9

Nozzle

The burner complies with the emission requirements of the UL 296
standard.
In order to guarantee that emissions do not vary, recommended
and/or alternative nozzles specified by Riello in the Instruction and
warning booklet should be used.
It is advisable to replace nozzles every year during
regular maintenance operations.
WARNING
The use of nozzles other than those specified by the
Manufacturer and inadequate regular maintenance
may result into emission limits non-conforming to
the values set forth by the regulations in force, and
in extremely serious cases, into potential hazards to
people and objects.
CAUTION
The manufacturing company shall not be liable for
any such damage arising from nonobservance of
the requirements contained in this manual.
4.9.1

Recommended nozzles

• BERGONZO A4 45° - return flow nozzle
1 2
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Installation
➤ Secure flange 7) to the boiler plate inserting the supplied gas-
ket 8). Use the 4 screws provided after having protected the
thread with an anti-seizing product.
➤ The burner-boiler seal must be airtight.
3
4
5
7
6
4.9.2

Nozzle assembly

At this stage of installation the burner is still disassembled from the
blast tube.
At this point install the nozzle with the box wrench 1)(Fig. 14), fitting
the wrench through the central hole in the flame stability disk.
Do not use any sealing products such as gaskets,
sealing compound, or tape.
Be careful to avoid damaging the nozzle sealing
WARNING seat.
D1220
17 GB
12
11
10
L
8
12
9
Fig. 13
Fig. 14
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