Table of Contents
Advertisement
4.13 Hydraulic connections
The pumps are equipped with a by-pass that connects return
line and suction line.
The pumps are installed on the burner with the by-pass closed
by screw 6)(Fig. 21). It is therefore necessary to connect both
hoses to the pump.
The pump will break immediately if it is run with
the return line closed and the by-pass screw in-
serted.
CAUTION
Remove the plugs from the suction and return connections of
the pump.
4.13.1 Pump
3
6
1
5
20115903
Technical data
Pump model
Min. delivery rate at 300 PSI pressure
Delivery pressure range
Max. suction pressure
Viscosity range
Max. oil temperature
Max. return pressure
Pressure calibration in the factory
Priming pump
Before starting the burner, make sure that the tank
return line is not clogged.
Obstructions in the line could cause the sealing or-
WARNING
gan located on the pump shaft to break.
In order for the pump (Fig. 21) to self-prime, it is vital that the
screw 4) of the pump be loosened to vent the air contained in
the suction line.
Start
the
burner
by
As soon as the burner starts, check the direction of rotation of
the fan blade.
The pump can be considered to be primed when the light oil
starts coming out of the screw 4). Close the burner and undo
the screws 4).
20106891
4
-
+
Fig. 21
GPH
PSI
PSI
cSt
°F
PSI
PSI
closing
the
remote
controls.
Installation
Insert the hose connections with the supplied seals into the
connections and screw them down.
Take care that the hoses are not stretched or twist-
ed during installation.
WARNING
Install the hoses where they cannot be stepped on or come
into contact with hot surfaces of the boiler and where they do
not hamper the opening of the burner.
Now connect the other end of the hoses to the suction and
return lines by using the supplied nipples.
Key (Fig. 21)
1
Suction line
2
Return line
3
Vacuometer connection
4
Pressure adjuster
5
By-pass screws
6
Gauge connection
2
TA3
(RLS 280-310/E)
218
102 - 580
The time required for this operation depends upon the diameter
and length of the suction tubing.
If the pump fails to prime at first start-up and the burner locks out,
wait approx. 15 seconds, reset the burner, and then repeat the
start-up operation.
And so on. After 5 or 6 starting operations allow 2 or 3 minutes for
the transformer to cool.
Do not light the flame sensor or the burner will lock out; the burner
should lock out anyway about 10 seconds after it starts.
28
GB
G 3/4" NPT
G 3/4" NPT
G 1/4"
G 1/4"
TA4
TA5
(RLS 410/E)
(RLS 510/E)
290
102 - 435
7.0
3 - 75
302 (150 °C)
73.0
300
403
Tab. N
Advertisement
Table of Contents
