Main Features; Burner Description; Burner Equipment; Technical Data - Baxi CRONO 2-L Instructions D'installation, De Montage Et De Fonctionnement

1.

MAIN FEATURES

The burner meets protection level of IP X0D (IP 40), accor-
ding to EN 60529.
2.

BURNER DESCRIPTION

One stage light oil burner.
1. Oil pump
2. Control-box
3. Reset button with lock-out lamp
4. Flange with insulating gasket
5. Air damper adjustment
6. Nozzle holder assembly
7. Photoresistance
8. Hydraulic jack
9. Start delaying device

2.1 Burner equipment

Flange with insulating gasket . . . . . . . . . . . . . . . . . . . . . . . . . 1
Screw and nuts for flange . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Screw and nuts for flange to be fixed to boiler. . . . . . . . . 2 or 4
Flexible oil pipes with nipples . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.

TECHNICAL DATA

3.1 Technical data
3.2 Overall dimensions
3.3 Working fields
4.

INSTALLATION

4.1 Boiler fixing

– Put on the flange (1) the screw and two nuts, (see fig. 3).
– Widen, if necessary, the insulating gasket holes (5), (see fig.
4).
– Fix the flange (1) to the boiler door (4) using screws (2) and
(if necessary) the nuts (3) interposing the insulating gasket
(5), (see fig. 2).
– For CRONO 10-L, 15-L and 20-L burners, after installation
check that the burners are slightly tilted forward, as shown in
fig. 5.
ENGLISH

4.2 Fuel supply

The burner is designed to allow entry of the oil supply pipes on
either side.
Depending on the oil supply pipes position (to the right or to the
left hand side of the burner) the fixing plate (1) and closing pla-
te (2) should be reversed, (see fig. 6).
(Fig. 1, page 3)

Hydraulic systems

4.3
Warning
– The pump is designed to allow working with two pipes. In order
to obtain one pipe working it is necessary to unscrew the re-
turn plug or the connector (2), remove the by-pass screw (3)
and then tighten the plug or the connector (2).
(See fig. 7).
– Before starting the burner make sure that the return pipe-line is
not clogged. An excessive back pressure would cause damage
to the pump seal.
Priming pump
On the system in fig. 6 it is sufficient to loosen the suction gauge
connection (6, fig.7, pag. 9) and wait until oil flows out.
On the systems in fig. 9 and 10 start the burner and wait for the pri-
ming. Should lock-out occur prior to the arrival of the fuel, await at
least 20 seconds before repeating the operation. The pump suction
should not exceed a maximum of 0.4 bar (30 cm Hg).
Beyond this limit gas is released from the oil. Oil pipes must be
completely tight.
In the vacuum systems (fig. 10) the return line should terminate
within the oil tank at the same level as the suction line. In this case
a non-return valve is not required. Should however the return
line arrive over the fuel level, a non-return valve is required. This
solution however is less safe than previous one, due to the possi-
bility of leakage of the valve.
(Page 4)

Electrical wiring

4.4
(Page 6)
(Page 7)
Notes:
– Wires of 1 mm
– The electrical wiring carried out by the installer must be in
compliance with the rules in force in the Country.
(Page 8)
Testing:
Check the shut-down of the burner by opening the thermostats
and the lock-out by darkening the photoresistance.
Control box
To remove the control-box from the burner, loosen screw
(A, fig. 12, page 11 or 12) and pull to the arrow direction, after re-
moving all components, the 7 pin plug and earth wire.
In case of disassembly of the control box, retighten the screw (A)
with a torque wrench setting of 1 – 1.2 Nm.
GB
:
(Fig. 11, pag. 11 and 12)
Attention:
Do not exchange neutral with phase.
2
section.
(Page 8)
(Page 9 and 10)
(Page 8)
22