Riello Burners PRESS 30N Quick start guide
2915893 (2) - 01/2009
Installation, use and maintenance instructions
Heavy oil burner
CODE MODEL TYPE
3433785 PRESS 30N 614 T80
3433786 PRESS 30N 614 T80
5893 1
1- Suction line
2- Return line
3- Pump pressure adjustment screw
4- Manometer plug (G 1/8)
5- Vacuometer plug (G 3/8)
6- Air shutter opening motor
7- Control box reset push-button and lock-out lamp
8- Reset push-button of the motor over load relay
9- Regulating bush for combustion head
10 - Sheathed filter for the thermometer
11 - Valves group
12 - Manometer with protection valve 16 - Wiring terminal board
13 - Adjustment thermostat 17 - Fair leads
14 - Pre-heater relay 18 - Back-pressure valve
15 - Ignition transformer
DIMENSIONS
Thermal power - Output 85 / 171 - 342 kW - 7.5 / 15 - 30 kg/h
Operation Two stages
Fuel Oil with max. viscosity at 50 °C: 150 mm2/s (20 °E)
Electrical supply (3 phase) 220V +10% -10% ~ 60Hz without neutral
380V +10% -10% ~ 60Hz with neutral
Motor 2.4A / 220V - 1.5A / 380V
Ignition transformer Primary: 2A - Secondary: 2 x 6.5kV - 35 mA
Heaters 2.8 kW
Absorbed electrical power 3.7 kW
Pump 65 Kg/h at 20 mbar
Fig. 1
*For extended - head version
Quantity Description
2 Flexibles tubes
2 Nipples
2 Seals
4Screws
1 Gasket for flange
2* Extensions for bars
5893 2
COMBUSTION CHAMBER PRESSURE - MAXIMUM OUTPUT
(two nozzles in operation)
When the burner operates with only one nozzle, the pressurization conditions are improved and no problems
arise.
Minimal fuel capacity with only one nozzle: 7.5 kg/h - 85 kW
Note for the extend. combustion head version
Apply the extensions provided as accessories for the burner withdrawing.
Front plate detail for
boiler mounting
5893 3
FUEL OIL GRAVITY FEED SYSTEMS
Gravity system (fuel oil with viscosity max. 7°E at 50° C)
Pump priming: loose the tap of the
vacuometer plug 5) (fig. 1) and wait
for the fuel flow.
H: Difference in the pipes height.
L: Length of the suction pipe.
SUCTION SYSTEM (fuel oil with viscosity max. 7°E at 50°C)
Not advised, to be used only in case of previously existing system.
Never overcome the max. de-
pression of 0.5 bar (38 cm Hg).
With higher values the fuel em-
anates gas.
The pipes shall be perfectly
sealed. When the tank is
placed below of the burner lev-
el, the return pipe should reach
the same level of the suction
pipe.
In this case the foot valve is not
required.
RING SYSTEM (for heavy oil with viscosity up to 20°E/50°C)
1- Tank (properly heated for heavy oil) 5- Forwarding pump
2- Filter (with resistance for oil>7°E/50°C) 6- Manometer
3- Burner 7- Burner pump
4- Couple of cocks (excluding the burner) 8- Pressure adjuster
Notice: All the pipes have to be properly seized, sealed and heated (elect. resistance or hot steam or water) to
let the fuel flow.
Warning: Before to put the burner in operation verify that no obstruction exists into the pipes, any obstruction may
damage the sealing of the pump.
H
meters
L meters
ø 3/4”
gas ø 1”
gas
0510
0.5 8 15
11120
1.5 14 25
21730
H
meters
L meters
ø 1”
gas ø11/4”
gas
02445
0.5 21 40
11835
1.5 15 30
21225
2.5 9 20
3615
5893 4
ELECTRICAL WIRING CONNECTIONS
(carried out by the factory)
LEGEND
TB
F
MB
S
CR
A2
A1
426
135
A1
13
14
3
M
531
A2
96
95
642
MV
TM
RT
R
TE
V2
7
8
6
11
2
5
3
4
1
+
-
MV2HS1
ST0
ST1ST2
R1
R2
M
SM
FR
TB
V1
411 85918 13 17 10
TB
1612 15
TA
1
RMO88.53A2
Tm
RMO88.53A2
L1R
NLS3 T1 30 T2 T6 T8
V2 1
V2 2
L1 L3L2 N
CMV
D2599
CMV Fan motor contactor
CR Pre-heart contactor
FSuppressor
FR Photoresistance
MB Wiring terminal board
MV Fan motor
RResistence
RMO Control box
RT Therminal overload
S Pre-heart
SM Servomotor
TA Ignition transformer
TB Earth of the burner
TE Start-up and adjustment thermostat
Tm Minimum value contact thermostat
TM Maximum value contact thermostat
V… Electromagnetic valves
5893 5
ELECTRICAL CONNECTIONS TO THE WIRING TERMINAL BOARD
(to be carried out by the installer)
NOTICE: Leads minimal section 1,5 mm2.
TWO STAGE OPERATION
It can be achived by the thermostat connected to 12 and 13 wiring terminal board (removing the bridge) controlling
2nd valve
PRE-HEATER RESISTANCES CONNECTIONS
D2463
HRemote lock-out signal
IN Manual burner stop switch
MB Wiring terminal board
TL Limit control device system
TR High-low mode control device system
TS Safety control device system
KEY TO LAYOUT
220V 380V
A Ampere T10 T6
B mm21,5 1,5
5893 6
FASTENING OF THE ELECTRICAL WIRES
All the electrical wires, which are to be connected to the terminal board 16) (fig. 1) shall pass through the fair leads
17) (fig. 1) as per this scheme.
1- Pre-heating resistances single phase supply: fair lead Pg 21
2- Motor three phase supply: fair lead Pg 16
3- Single phase supply and safety thermostat: fair lead Pg 13.5
4- Control thermostat: fair lead Pg 13.5
5- 2nd stage thermostat:fair lead Pg 13.5
6- Pre-sheared holes
Further prospective signals or controls can be connected to the burner wiring terminal board by removing the
metal weldnuts from the pre-sheared holes and inserting a commun fair lead for the passage and the clamping
of the leads.
NOTES
- Carry out a safe earth connection.
- Verify the burner stop by opening the boiler thermostat and the burner lock-out by darkening the photo-resist-
ance.
5893 7
CHOICE OF NOZZLES - OF THE PUMP PRESSURE
OF THE COMBUSTION HEAD ADJUSTMENT
Advise pressure
- Light oil: 20 bar
- Heavy oil: 25 bar
Rated deliveries of the nozzles are indicated on the above list and refer to a light oil having viscosity from 3 to
5° E at 50° C pre-heated at 100° C.
The effective delivery may vary of ± 5% against the rated one.
In case of requirement of intermediate values, the pump pressure or the nozzles match could be changed.
The pump is set by the factory at 20 bar.
Combustion head adjustment
Turn the screw A till the set-point, detected from the di-
agram, is on line with the washer B.
Incase of veryheavy oil it isadvised to usehigh
wear resistance nozzles (for instance Monarch
F 80 H0)
Nozzles delivery
Pump pressure Combustion head adjustment
Maximum output
Nozzle
GPH (45° - 60°) 20 bar
kg/h 25 bar
kg/h
1,25 + 1,25 15,00 17,00
1,50 + 1,50 18,00 20,30
1,75 + 1,75 21,00 23,80
2,00 + 2,00 24,00 27,10
2,25 + 2,25 27,00 30,50
2,50 + 2,50 30,00 -
Set-point
Set-point 4
A
B
5893 8
ADJUSTMENT OF THE AIR DAMPER MOTOR
STOP - Blue lever
This lever leaves the factory vertically positioned and
corresponds to the complete closing of the air damp-
er.
A partial opening of the air damper might be obtained
by moving leftwards this lever (+ on the label).
The new position the air damper is detectable when
the burner is off. Do not overcome the position of the
orange lever for the 1st stage.
1st STAGE - Orange lever
The orange lever controls the air damper position for the first flame, it is adjustable both for opening and clos-
ing.
2nd STAGE - Red and black levers
The red lever controls the air damper position for the second flame, it is adjustable both for closing and open-
ing.
The black lever controls the opening of the second oil valve and it must always anticipate - for a bit - the red
lever, but never the orange one.
BURNER START-UP PROGRAM
Motor lock-out
It is caused by the motor overload relay if overload occurs or no phase.
Reset: push the buttons 7) and 8) fig. 1.
Black lever
Red lever
Orange lever
Blue lever
Opening +
Thermostat
Motor
Ignition transformer
1st flame valve
2nd flame valve
Lock-out lamp
Lock-out because
no ignition
Normal
D2894
-Closing
This manual suits for next models
2
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