baltur BT 17 SPN, Manual Instructions For Use

Page: 37 / 66

E
N
G
L
I
S
H
13 / 18
0006080304_201107
INITIAL PIPING FILL
After checking that the protective plastic plugs placed inside the
pump couplings have been removed, proceed as follows:
1) Turn the switch on the burner to “O”. This prevents automatic
ignition of the burner and, in particular, prevents the heating
elements being switched on, components which, if left on with
the tank empty could burn out.
2) Make sure, if the burner is three-phase, that the motor turns
anticlockwise (when looking at the burner from the pump
side). Direction of rotation can be ascertained by observing
the direction of fan rotation via the spy-hole on the rear end
of the worm screw. To start the motor close the relay switch
manually (by pressing on the mobile part) for a few seconds
and observe which way the fan turns. Should it be necessary
to invert rotation switch over two phases on the power line input
terminals (L1-L2 -L3).
Note: To be sure which way the fan is rotating wait for it to slow
down as it may otherwise give the onlooker a false impression.
3) Remove (if already connected) the flexible hoses from the
aspiration and return piping.
4) Immerge the end of the flexible suction hose in a recipient
containing lubricating oil or fuel oil (do not use low-viscosity
products such as light oil, petrol, kerosene etc).
5) Now press the mobile part of the motor relay switch to start the
motor and therefore the pump. Wait until the pump has aspirated
a quantity of lubricant equivalent to about 1 or 2 cups, then stop.
This operation serves to avoid the pump working on empty
conditions and to increase suction capacity.
N.B. Pumps operating at 2800 rpm MUST NEVER run on empty
as they will quickly seize.
6) Now connect the hose to the suction pipe and open all its
dampers and all other fuel interception devices.
7) Now press the mobile part of the relay switch once again to
start the pump; this will draw the fuel from the tank.
Note: Where piping is long it may be necessary to release air via the
vent plug. If the pump is not equipped with such a plug remove
the pressure gauge attachment plug. In this case, when the fuel
is seen to flow out of the pressure gauge coupling hole stop
and replace the plug. Then continue filling until the tank is full
(the preheating tank is full when fuel is seen to flow out of the
return hose which has not yet been connected).
8) Connect the return hose to the piping and open the gates
situated on this pipe. The burner is now ready for ignition.
IGNITION AND ADJUSTMENT
(see 8608/1. 8605/1)
Before igniting make sure that:
a) Connections with the fuel line, thermostats or pressure switches
are carried out exactly as illustrated in the control box wiring
diagram.
b) There is fuel in the tank and water in the boiler.
c) That all the sluice valves on the fuel oil suction and return piping
are open as is every other part through which the fuel flows.
d) Combustion fumes discharge occurs freely (boiler flue gates
and chimney open).
e) Make sure the burner head penetrates the combustion chamber
in accordance with the boiler manufacturer’s specifications. To
ensure this is so the burner is equipped with a boiler attachment
flange which slides with respect to the combustion head.
f) The burner nozzles are compatible with boiler output; if neces-
sary, replace them. The quantity of fuel being delivered must
never be greater than the maximum boiler-requested quantities
or maximum admissible burner quantities. Bear in mind that
the combustion head has been designed for use with nozzles
having a 45° spray angle.
Note: To ensure good ignition and combustion with the first stage
only, fuel delivery must not be notably lower than the minimum
flow-rate for the employed burner (see identification plate).
FOR IGNITION PROCEED AS FOLLOWS :
1) Remove the thermostat connection, if there already is one, to
prevent inclusion of the 2nd flame.
2) Open the air control just a little to allow the air flow presumed
to be necessary for operating the burner with the 1st flame,
and lock it in this position; adjust the air control device on the
combustion head to an intermediate position (see the section
“Adjusting air on the combustion head”).
3) Turn on the main switch and the ON/OFF burner switch.This
switches on all the fuel oil heating elements and simultaneously
causes the yellow warning light on the burner to come on.
4) The minimum thermostat comes on when the fuel con-
tained in the preheater reaches the set temperature.
When the minimum thermostat switches off the control box (if
the other boiler thermostats are off) is switched on; the control
box then switches on the devices making up the burner as per
the pre-set program. The unit ignites as illustrated in “Descrip-
tion of Operation”.
5) When the burner is operating with the 1st stage adjust, as
described in point 2, the air quantity so that good combustion is
ensured. It is better to have a slightly poor 1st stage air-flow in
order t ensure perfect ignition even under the most demanding
conditions.
6) After regulating the 1st stage air-flow stop the burner by cutting
power at the main switch. Connect the terminals of the 2nd
stage.
7) Adjust the screw that limits the travel of the hydraulic piston
controlling the air gate for the 2nd flame, unscrewing it enough
for the fuel to burn.
N.B. Before adjusting the adjustment screw, slacken the lock
nut, tightening it again when you have finished making the
adjustment.
8) The appliance will come on again and automatically go on to the
2nd flame, according to the established programme.
9) With the unit now operating with the 2nd stage, adjust (by opera-