FUEL SUPPLY
Depending on the gas output and the available pressure
in the supply line, you should check the correct gas train
to be adapted to the system requirements.
The gas train is Multibloc type, containing the main
components in a single unit and it can be fitted with the
valves seal control (as accessory).
GAS TRAIN
MULTIBLOC
MBZRDLE 405 - 407 - 410
L1 L
LEAK DETECTION CONTROL DEVICE
MULTIBLOC
The burners are set for fuel supply from either the right or left
hand sides.
Name
MBZRDLE 405
MBZRDLE 407
MBZRDLE 410
Code
3970084
3970537
3970534
Ø i
Rp 1/2”
Rp 3/4”
1”
Øo
Rp 1/2”(*)
Rp 3/4”
Rp 3/4”
X mm
321
371
405
Y mm
257
257
315
Z mm
120
120
145
W mm
46
46
55
(*) With 1/2” - 3/4” reduction nipple supplied.
5
9
6
7
8
1
2
3
4
P2
10
11
12
P1
Y
Z
X
W
The dimensions of the gas trains vary depending
on their construction features.
The following table shows the dimensions of the
gas trains that can be fitted to Riello 40 GSD burners,
intake and outlet diameters.
1
2
3
4
5
6
7
8
9
10
11
12
P1
P2
L
L1
Gas delivery pipe
Manual valve
Vibration damping joint
Gas pressure gauge
Filter
Gas pressure switch
Safety solenoid
Adjustment solenoid 1st and 2nd stage:
firing delivery adjustment (rapid opening)
maximum delivery adjustment (slow opening)
Pressure regulator
Leak detection control device for valves 7 and 8 (accessory)
Gas train-burner adapter
Burner
Combustion head pressure
Upstream pressure from the filter
Gas train supplied separately
To be performed by the installer
4
Øi
Øo