Light Oil Supply; General Supply Layout (Example) - Riello DB 12 LSE FGR Installation, Use And Maintenance Instructions

4.12

Light oil supply

Explosion danger due to fuel leaks in the
presence of a flammable source.
Precautions: avoid knocking, attrition, sparks and
heat.
Make sure the fuel shut-off valve is closed before
performing any operation on the burner.

4.12.1 General supply layout (example)

The hydraulic diagram (example) of the burner is shown in
Fig. 21.
PCV
BP
MM
GAS
GF LPG C
MM
MM
GAS
C
GF HPG
Key (Fig. 21)
AD Air damper
BP Pilot burner
C Vibration damping joint
CL Oil collector
GF Gas filter
HPG High gas pressure regulator
IP Passage indicator
LPG Low gas pressure regulator
MM Pressure gauge
MN Light oil delivery pressure gauge
MR Oil return pressure gauge
N Nozzle
NL Oil lance
PA Minimum air pressure switch
PCV Pilot gas pressure regulator
PGM Maximum gas pressure switch
VP VP
N POm MN VS1 VS2
NL
VR1
VR2
AD
CL
PGM
SM
RG
PA
TF TF
PGm VPS
VE
VS VR
VC
20121557
Installation
ATTENTION
RP
MR
VU
POM MR
RP
SM
GS
VR
M
B P S
A
F
GP
PGm Minimum gas pressure switch
POm Minimum oil pressure switch
POM Maximum oil pressure switch
RG Gas butterfly valve
RP Oil return pressure regulator
SM Servomotor
RV Pressure
environment
VE Fan
VP Pilot solenoid valves
VPS Gas solenoid valves leak detection control device
VR Gas pressure regulator solenoid valve
VS Gas safety solenoid valve
VS1-VS2 Safety valve for the oil supply
VR1-VR2 Safety valve for the oil return line
VU Nozzle valve
19 GB
The fuel supply line must be installed by qualified
personnel, in compliance with current standards
and laws.
Delivery
lance
MANDATA
LANCIA
VS2
VS1
POm
MN
CL
MANDATA
Outlet
SO
TM
Tm
E L P
TS
V A P
M
limiting valve with
POM
RITORNO
MODULATORE
VR2
VR1
G1/2"
G1/2"
RITORNO
Return
M
VV
RV F1
STEAM
8÷10bar
IP
SC
Fig. 21
outlet into the
20174375