Riello RS 28 Quick start guide

Installation, use and maintenance instructions
Instrucciones de Instalación, Funcionamiento y Mantenimiento
Instruções de Instalação, Funcionamento e Manutenção
Forced draught gas burners
Quemadores de gas con aire soplado
Queimadores a gás com ar insuflado
2915932 (4) - 02/2014
CODE - CÓDIGO MODEL - MODELO TYPE - TIPO
3783300 - 3783302 RS 28 809 T1
3783301 - 3783303 RS 28 809 T1
3784400 - 3784402 RS 38 810 T1
3784401 - 3784403 RS 38 810 T1
3784500 - 3784502 RS 38 810 T1
3784501 - 3784503 RS 38 810 T1
3784700 - 3784702 RS 50 811 T1
3784701 - 3784703 RS 50 811 T1
GB
E
P
Progressive two-stage operation
Funcionamiento a dos llamas progresivas
Funcionamento a duas chamas progressivas

1
CONTENTS
TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2
Variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Burner description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Packaging - Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Max. dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Standard equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Firing rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Test boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Commercial boilers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Gas pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Boiler plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Blast tube length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Securing the burner to the boiler . . . . . . . . . . . . . . . . . . . . . . . . . 6
Setting the combustion head . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Gas line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Adjustments before firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Servomotor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Burner starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Burner firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Burner calibration: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1 - Firing output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2 - 2nd stage output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 - 1st stage output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 - Intermediates outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 - Air pressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 - Minimum gas pressure switch. . . . . . . . . . . . . . . . . . . . . . . . 15
Flame present check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Burner operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Final checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Burner start-up cycle diagnostics. . . . . . . . . . . . . . . . . . . . . . . 18
Resetting the control box and using diagnostics. . . . . . . . . . . 18
Fault - Probable cause - Suggested remedy . . . . . . . . . . . . . . . 19
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
N.B.
Figures mentioned in the text are identified as follows:
1)(A) =part 1 of figure A, same page as text;
1)(A)p.3 =part 1 of figure A, page number 3.
GB

2
TECHNICAL DATA
(1) Reference conditions: Ambient temperature 20°C - Barometric pressure 1000 mbar - Altitude 100 m a.s.l.
(2) Pressure at test point 8)(A)p.3, with zero pressure in the combustion chambre, with open gas ring 2)(B)p.7 an maximum burner output
(3) Sound pressure measured in manufacturer’s combustion laboratory, with burner operating on test boiler and at maximum rated output.
MODEL RS 28 RS 38 RS 38 RS 50
TYP 809 T1 810 T1 810 T1 811 T1
OUTPUT
(1)
2nd stage kW 163 - 325
140 - 280 232 - 440 200 - 378 232 - 440 200 - 378 295 - 600 254 - 516
Mcal/h
min. 1st stage kW
Mcal/h 81 70 105 90 105 90 115 99
FUEL NATURAL GAS: G20 - G21 - G22 - G23 - G25
G20 G25 G20 G25 G20 G25 G20 G25
- Net calorific value kWh/Nm3
Mcal/Nm310
8,6 8,6 7,4 10 8,6 8,6 7,4 10 8,6 8,6 7,4 10 8,6 8,6 7,4
- Absolute density kg/Nm30,71 0,78 0,71 0,78 0,71 0,78 0,71 0,78
- Max delivery Nm3/h 32 38 44 51 44 51 58 68
- Pressure at maximum delivery
(2)
mbar 7,5 11,1 6,6 9,7 6,6 9,7 7,2 10,6
OPERATION • Intermittent (min. 1 stop in 24 hours)
• Two-stage (high and low flame) and single-stage (all - nothing)
STANDARD APPLICATION Boilers: water, steam, diethermic oil
AMBIENT TEMPERATURE °C 0 - 40
COMBUSTION AIR TEMPERATURE °C max 60
ELECTRICAL SUPPLY V
Hz 230 ~ +/-10% 50 - single-phase 230 - 400 with neutral ~ +/-10% 50 - three-phase
ELECTRICAL MOTOR rpm
W
V
A
2800
250
220- 240
2,1
2800
420
220- 240
2,9
2800
450
220/240-380/415
2-1,2
2800
650
220/240-380/415
3-1,7
MOTOR CAPACITOR
µF/V 8/450 12,5/450
IGNITION TRASFORMER V1 - V2
I1 - I2 230 V - 1 x 8 kV
1 A - 20 mA
ELECTRICAL POWER CONSUMPTION W max 370 600 560 750
ELECTRICAL PROTECTION IP 44
IN CONFORMITY WITH EEC DIRECTIVES 2009/142 - 2006/42 - 2006/95 - 2004/108
NOISE LEVELS
(3)
dBA 68 70 70 72
APPROVAL CE 0085AP0733 0085AP0734 0085AP0734 0085AP0735
VARIANTS GAS CATEGORY
Model Electrical
supply Blast tube length mm COUNTRY CATEGORY
RS 28 single-phase
single-phase 216 351 IT - AT - GR - DK - FI - SE
ES - GB - IE - PT
NL
FR
DE
BE
LU - PL
II
2H3B / P
II
2H3P
II
2L3B / P
II
2Er3P
II
2ELL3B /P
I
2E(R)B,
I
3P
II
2E 3B/P
RS 38
single-phase
single-phase
three-phase
three-phase
216
351
216
351
RS 50 three-phase
three-phase 216 351

3
BURNER DESCRIPTION (A)
1 Combustion head
2 Ignition electrode
3 Screw for combustion head adjustment
4 Sleeve
5 Minimum air pressure switch
(differential operating type)
6 Flame sensor probe
7 Air pressure test point
8 Gas pressure test point and head fixing screw
9 Screws securing fan to sleeve
10 Slide bars for opening the burner and
inspecting the combustion head
11 Servomotor controlling the gas butterfly
valve and of air gate valve (by means of a
variable profile cam mechanism).
When the burner is not operating the air gate
valve is fully closed in order to reduce heat
dispersion from the boiler due to the flue
draught which draws air from the fan suction
inlet.
12 Plate with four hole knock-outs for electrical
cable routing
13 Air inlet to fan
14 Gas input pipework
15 Gas butterfly valve
16 Boiler mounting flange
17 Flame stability disk
18 Flame inspection window
19 Plug-socket on ionisation probe cable
20 Motor contactor and thermal cut-out reset
button (RS 38 - 50 three-phase)
21 Motor capacitor (RS 28 - 38 single-phase)
22 Control box with lock-out pilot light and lock-
out reset button
23 Two switches:
- one “burner off - on”
- one for “1st - 2nd stage operation”
24 Plugs for electrical connections
25 Air gate valve
Two types of burner failure may occur:
•Control box lock-out: if the control box
22)(A) pushbutton (red led) lights up, it indi-
cates that the burner is in lock-out.
To reset, hold the pushbutton down for
between 1 and 3 seconds.
•Motor trip (RS 38 three-phase - RS 50):
release by pressing the pushbutton on ther-
mal cutout 20)(A).
PACKAGING - WEIGHT (B) - Approximate
measurements
• The burner are shipped in cardboard boxes with
the maximum dimensions shown in Table (B).
• The weight of the burner complete with pack-
aging is indicated in table (B).
MAX. DIMENSIONS (C)
Approximate measurements
The maximum dimensions of the burner are
given in (C).
Note that if you need to examine the combustion
head, the burner must be pulled backward on
the slide bars and turned upward.
The maximum dimension of the burner, without
the cover, when open is give by measurement
H.
STANDARD EQUIPMENT
1 - Gas train flange
1 - Flange gasket
4 - Flange fixing screws M 8 x 25
1 - Thermal insulation screen
4 - Screws to secure the burner flange to the
boiler: M 8 x 25
5 - Fairleads for electrical connections
(RS 28 - 38 single-phase)
6 - Fairleads for electrical connections
(RS 38 - 50 three-phase)
1 - Instruction booklet
1 - Spare parts list
(A)
mm A B C kg
RS 28 1010 625 495 38
RS 38 1010 625 495 40
RS 50 1010 625 495 41
(B)
(1) Blast tube: short-long
mm A B C D
(1)
E F G H I L M
RS 28 476 474 580 216 - 351 140 352 164 810 108 168 1”1/2
RS 38 476 474 580 216 - 351 140 352 164 810 108 168 1”1/2
RS 50 476 474 580 216 - 351 152 352 164 810 108 168 1”1/2
(C)
D492
D88
D3045
D3026
D495

4
FIRING RATES (A)
The RS 28-38-50 burners can work in two ways:
one-stage and two-stage
MAXIMUM OUTPUT must be selected in area A.
MINIMUM OUTPUT must not be lower than the
minimum limit shown in the diagram.
RS 28 = 81 kW
RS 38 = 105 kW
RS 50 = 115 kW
Important:
The FIRING RATE value range has been
obtained considering an ambient temperature of
20 °C, and an atmospheric pressure of 1000
mbar (approx. 100 m above sea level) and with
the combustion head adjusted as shown on
page 7.
TEST BOILER (B)
The firing rates were set in relation to special
test boilers, according to EN 676 regulations.
Figure (B) indicates the diameter and length of
the test combustion chamber.
Example:
Output 350 Mcal/h:
diameter = 50 cm; length = 1,5 m.
COMMERCIAL BOILERS
The burner/boiler combination does not pose
any problems if the boiler is CE type-approved
and its combustion chamber dimensions are
similar to those indicated in diagram (B).
If the burner must be combined with a commer-
cial boiler that has not been CE type-tested and/
or its combustion chamber dimensions are
clearly smaller than those indicated in diagram
(B), consult the manufacturer.
(B)
D497
Mcal/h
kW
pressure mbar
Combustion chamber
pressure mbar
Combustion chamber
pressure mbar
Combustion chamber
Combustion chamber
length m
(A)
RS 28
RS 38
RS 50
D3612

5
GAS PRESSURE
The adjacent tables show minimum pressure
losses along the gas supply line depending on
the burner output in 2nd stage operation.
Column 1
Pressure loss at combustion head.
Gas pressure measured at test point 1)(B), with:
• Combustion chamber at 0 mbar
• Burner operating in 2nd stage
• Gas ring 2)(B)p.7 adjusted as indicated in dia-
gram (C)p. 7.
Column 2
Pressure loss at gas butterfly valve 2)(B) with
maximum opening: 90°.
Column 3
Pressure loss of gas train 3)(B) includes: adjust-
ment valve VR, safety valve VS (both fully
open), pressure governor R, filter F.
The values shown in the various tables refer to:
natural gas G20 PCI 10 kWh/Nm
3
(8.6 Mcal/Nm
3
).
With:
natural gas G25 PCI 8.6 kWh/Nm
3
(7.4 Mcal/Nm
3
)
multiply tabulated values by 1.3.
Calculate the approximate 2nd stage output of
the burner thus:
- subtract the combustion chamber pressure
from the gas pressure measured at test point
1)(B).
- Find the nearest pressure value to your result
in column 1 of the table for the burner in ques-
tion.
- Read off the corresponding output on the left.
Example - RS 28:
• 2nd stage operation
• Natural gas G20 PCI 10 kWh/Nm
3
• Gas ring 2)(B)p.7 adjusted as indicated in dia-
gram (C)p.7.
• Gas pressure at test point 1)(B) = 6 mbar
• Pressure in combustion chamber = 2 mbar
6 - 2 = 4 mbar
A 2nd stage output of 210 kW shown in Table RS
28 corresponds to 4 mbar pressure, column 1.
This value serves as a rough guide, the effective
delivery must be measured at the gas meter.
To calculate the required gas pressure at test
point 1)(B), set the output required from the
burner in 2nd stage operation:
- find the nearest output value in the table for
the burner in question.
- Read off the pressure at test point 1)(B) on
the right in column 1.
- Add this value to the estimated pressure in
the combustion chamber.
Example - RS 28:
• Required burner output in 2nd stage opera-
tion: 210 kW
• Natural gas G20 PCI 10 kWh/Nm
3
• Gas ring 2)(B)p.7 adjusted as diagram (C)p.7.
• Gas pressure at burner output of 210 kW,
taken from table RS 28, column 1 = 4 mbar
• Pressure in combustion chamber = 2 mbar
4 + 2 = 6 mbar
pressure required at test point 1)(B).
(A)
(B)
RS 28 ∆p (mbar)
RS 38 ∆p (mbar)
RS 50 ∆p (mbar)
kW 1 2
3
Ø 3/4
3970076 Ø 1” 3970077 Ø 1”
1/4
3970144 Ø 1”
1/2
3970145 Ø 1”
1/2
3970180
165
185
210
235
260
285
310
325
2,5
3,1
4,0
4,7
5,5
6,3
7,0
7,5
0,1
0,1
0,1
0,2
0,2
0,3
0,3
0,3
11,1
13,4
16,5
19,9
23,6
27,5
31,6
34,2
5,3
6,4
7,9
9,5
11,2
13,1
15,0
16,2
3,2
3,8
4,7
5,6
6,6
7,6
8,7
9,4
2,1
2,5
3,1
3,8
4,5
5,3
6,2
6,7
1,8
2,0
2,5
3,2
3,7
4,4
4,7
4,9
kW 1 2
3
Ø 1”
3970077 Ø 1”
1/4
3970144 Ø 1”
1/2
3970145 Ø 1”
1/2
3970180
Ø 2”
3970146
3970160
Ø 2”
3970181
3970182
230
260
290
320
350
380
410
440
2,6
3,1
3,7
4,3
4,8
5,4
6,0
6,6
0,2
0,2
0,3
0,3
0,4
0,4
0,5
0,6
9,2
11,2
13,4
15,8
18,3
20,9
23,7
26,6
5,4
6,6
7,9
9,2
10,6
12,1
13,7
15,3
3,6
4,5
5,5
6,5
7,6
8,8
10,1
11,4
3,0
3,7
4,4
4,8
5,9
6,6
7,0
8,1
1,4
1,7
2,1
2,5
3,0
3,5
4,0
4,5
1,8
2,2
2,7
3,3
3,5
4,0
4,4
5,0
kW 1 2
3
Ø 1”
3970077 Ø 1”
1/4
3970144 Ø 1”
1/2
3970145 Ø 1”
1/2
3970180
Ø 2”
3970146
3970160
Ø 2”
3970181
3970182
290
330
370
410
450
490
530
580
2,2
2,9
3,6
4,3
5,0
5,6
6,3
7,2
0,3
0,4
0,5
0,6
0,7
0,9
1,0
1,2
13,4
16,6
20,0
23,7
27,6
31,7
36,1
41,8
7,9
9,7
11,6
13,7
15,9
18,2
20,6
23,9
5,5
6,9
8,4
10,1
11,9
13,7
15,7
18,5
4,4
5,0
6,1
7,0
8,3
9,7
10,5
12,0
2,1
2,7
3,3
4,0
4,7
5,5
6,3
7,4
2,7
3,4
3,9
4,4
5,1
5,9
6,6
7,8
D934

6
INSTALLATION
BOILER PLATE (A)
Drill the combustion chamber locking plate as
shown in (A).
The position of the threaded holes can be
marked using the thermal screen supplied with
the burner.
BLAST TUBE LENGTH (B)
The length of the blast tube must be selected
according to the indications provided by the
manufacturer of the boiler, and in any case it
must be greater than the thickness of the boiler
door complete with its fettling. The range of
lengths available, L (mm), is as follows:
Blast tube 10): RS 28 RS 38 RS 50
• short 216 216 216
• long 351 351 351
For boilers with front flue passes 13) or flame
inversion chambers, protective fettling in refrac-
tory material 11) must be inserted between the
boiler fettling 12) and the blast tube 10).
This protective fettling must not compromise the
extraction of the blast tube.
For boilers having a water-cooled front the
refractory fettling 11)-12)(B) is not required
unless it is expressly requested by the boiler
manufacturer.
SECURING THE BURNER TO THE BOILER (B)
Before securing the burner to the boiler, check
through the blast tube opening to make sure
that the flame sensor probe and the ignition
electrode are correctly set in position, as shown
in (C).
Now detach the combustion head from the
burner, fig.(B):
- remove screw 14) and withdraw the cover
15).
- Disengage the articulated coupling 4) from
the graduated sector 5).
- Remove the screws 2) from the slide bars 3)
- Remove screw 1) and pull the burner back on
slide bars 3) by about 100 mm.
Disconnect the wires from the probe and the
electrode and then pull the burner completely
off the slide bars, after removing the split pin
from the slide bar 3).
Secure the flange 9)(B) to the boiler plate, inter-
posing the thermal insulating screen 6)(B) sup-
plied with the burner. Use the 4 screws, also
supplied with the unit, after first protecting the
thread with an anti-locking product.
The seal between burner and boiler must be air-
tight.
If you noticed any irregularities in positions of
the probe or ignition electrode during the check
mentioned above, remove screw 1)(D), extract
the internal part 2)(D) of the head and proceed
to set up the two components correctly.
Do not attempt to turn the probe. Leave it in the
position shown in (C) since if it is located too
close to the ignition electrode the control box
amplifier may be damaged.
(A)
(B)
mm A B C
RS 28 160 224 M 8
RS 38 160 224 M 8
RS 50 160 224 M 8
(C)
(D)
PROBE ELECTRODE RS 28-38 ELECTRODE RS 50
D455
D499
D880
D501

7
SETTING THE COMBUSTION HEAD
Installation operations are now at the stage
where the blast tube and sleeve are secured to
the boiler as shown in fig.(A). It is now a very
simple matter to set up the combustion head, as
this depends solely on the output developed by
the burner in 2nd stage operation.
It is therefore essential to establish this value
before proceeding to set up the combustion
head.
There are two adjustments to make on the
head:
air and gas deliveries.
In diagram (C) find the notch to use for adjusting
the air and the gas, and then proceed as fol-
lows:
Air adjustment (A)
Turn screw 4)(A) until the notch identified is
aligned with the front surface 5)(A) of the flange.
Gas adjustment (B)
Loosen screws 1)(B) and turn ring 2) until the
notch identified is aligned with index 3).
Tighten the screw 1) fully down.
Example RS 38:
burner output = 337 kW (290 Mcal/h).
If we consult diagram (C) we find that for this
output, air and gas must be adjusted using
notch 3, as shown in figs.(A) and (B).
Note
Diagram (C) shows the ideal settings for the
combustion head. If the gas mains pressure is
too low to reach the 2nd stage operation pres-
sure indicated on page 5, and if the ring 2)(B) is
not fully open, it can be opened wider by 1 or 2
notches.
Continuing with the previous example, page 5
indicates that for burner RS 38 with output of
337 kW (290 Mcal/h) a pressure of approxi-
mately 4,6 mbar is necessary at test point 6)(A).
If this pressure cannot be reached, open the
ring 2)(B) to notch 4 or 5.
Make sure that the combustion characteristics
are satisfactory and free of pulsations.
Once you have finished setting up the head, refit
the burner 4)(D) to the slide bars 3) at approxi-
mately 100 mm from the sleeve 5) - burner posi-
tioned as shown in fig.(B)p.6 - insert the flame
detection probe cable and the ignition electrode
cable and then slide the burner up to the sleeve
so that it is positioned as shown in fig.(D).
Refit screws 2) on slide bars 3).
Secure the burner to the sleeve by tightening
screw 1) and then refit the split pin into one of
two slide bars 3).
Reconnect the articulation 8) to the graduated
sector 7).
Important
When fitting the burner on the two slide bars, it
is advisable to gently draw out the high tension
cable and flame detection probe cable until they
are slightly stretched.
(A)
(C)
(B)
(D)
Burner output in 2nd stage operation
Notches nr. (Air = Gas)
D502
D503
D504

8
GAS LINE
• The gas train must be connected to the gas
attachment 1)(A), using flange 2), gasket 3)
and screws 4) supplied with the burner.
• The gas train can enter the burner from the
right or left side, depending on which is the
most convenient, see fig.(A).
• Gas solenoids 8)-9)(B) must be as close as
possible to the burner to ensure gas reaches
the combustion head within the safety time
range of 3 s.
• Make sure that the pressure governor calibra-
tion range (colour of the spring) comprises the
pressure required by the burner.
GAS TRAIN (B)
It is type-approved according to EN 676 Stand-
ards and is supplied separately from the burner
with the code indicated in Table (C).
KEY (B)
1 - Gas input pipe
2 - Manual valve
3 - Vibration damping joint
4 - Pressure gauge with pushbutton cock
5 - Filter
6 - Pressure governor (vertical)
7 - Minimum gas pressure switch
8 - Safety solenoid VS (vertical)
9 - Adjustment solenoid VR (vertical)
Two adjustments:
• ignition delivery (rapid opening)
• maximum delivery (slow opening)
10 - Standard issue burner gasket with flange
11 - Gas adjustment butterfly valve
12 - Burner
13 - Gas valve 8)-9) leak detection control
device.
In accordance with EN 676 Standards, gas
valve leak detection control devices are
compulsory for burners with maximum out-
puts of more than 1200 kW.
14 - Gas train/burner adaptor.
P1- Pressure at combustion head
P2- Pressure down-line from the pressure gov-
ernor
P3- Pressure up-line from the filter
L - Gas train supplied separately with the code
indicated in Table (C)
L1 - The responsibility of the installer
KEY TO TABLE (C)
C.T. =Gas valves 8) - 9) leak detection control
devices:
- = Gas train without gas valve leak detec-
tion control device; device that can be
ordered separately and assembled sub-
sequently (see Column 13).
♦= Gas train with assembled VPS valve
leak detection control device.
13 =VPS valve leak detection control device.
Supplied separately from gas train on
request.
14 =Gas train/burner adaptor.
Supplied separately from gas train on
request.
Note
See the accompanying instructions for the
adjustment of the gas train.
(A)
(B)
(C)
GAS BURNERS AND RELEVANT GAS TRAINS APPROVED ACCORDING TO EN 676
Gas train L Burner 13 14
Ø C.T. Code RS 28 RS 38 RS 50 Code Code
3/4” −3970076 • − − 3010123 3000824
1” −3970077 • • • 3010123 3000824
1” 1/4 −3970144 • • • 3010123 −
1”1/2 −3970145 • • • 3010123 −
1”1/2 −3970180 • • • 3010123 −
2” −3970146 −• • 3010123 3000822
2” −3970181 −• • 3010123 3000822
2” ♦3970160 −• • −3000822
2” ♦3970182 −• • −3000822
GASTRAINCOMPONENTS
Code
Components
Filter
5Pressure governor 6Solenoids 8 - 9
3970076 Multiblock MB DLE 407
3970077 Multiblock MB DLE 410
3970144 Multiblock MB DLE 412
3970145 GF 515/1 FRS 515 DMV DLE 512/11
3970180 Multiblock MB DLE 415
3970146
3970160 GF 520/1 FRS 520 DMV DLE 520/11
3970181
3970182 Multiblock MB DLE 420
D505
D935