Page 1
SPARE PARTS EXPLODED VIEW
GAS WALL BOILERS
Models
BASIC 23 MFFI R
Edition 1 of 15 April 1998
Page 2
15
1
56
60
57
5355 54
61
58
5152 50
49
48
348
349
350
47
10
11
12
13
14
15
16
17
16
2
3
4
5
6
7
8
9
79
15
3
80
58
59
19
6
10
19
77
78
64
70
59
71
15
10
19
69
68
59
72
73
74
75
76
83
82
81
19
10
16
87
88
84
86
85
64
67
63
65
62
10
98
88
99
66
73
100
96
89
97
10
95
90
94
103
102
101
75
10
28
92
347
341
342
91
346
345
343
93
344
46
45
44
43
42
41
40
18
371
371
371
372
cod. 570533
cod. 571425
331 332
371
371
332
373
333
19
20
301
301
301
301
301
301
301
301
301
301
301
21
10
22
23 19
cod. 560166
301
301
301
301
301
301
24 27
25 30
26
28
29 28
34
3232 3331
35 36 37 38
MODELS CHARACTERISTICS SERIAL NO.
VALIDITY
BASIC 23 MFFI R METHANE 9808400417 A
BASIC 23 MFFI R LPG 9808400420 B
39
REF.
Page 3
PART. CODE DESCRIPTION REF. NOTE
1 564492 Expansion vessel
2 ------ Frame 11
3 570717 Fastening spring
4 573531 Brass nipple 1/2"
5 573530 Lock nut 1/2"
6 571963 Left holder control panel bracket
7 ------ Earth symbol plate 11
8 569192 LH control panel hinge
9 566093 RH control panel hinge
10 573520 Gasket 3/4" 13
11 570531 Lower grate
12 570448 Circulator/main exchanger pipe
13 570575 Expansion vessel pipe
14 564254 Automatic air release valve
15 573521 Gasket 3/8" 13
16 569387 Gasket 1" 13
17 997006 Standard circulator with CE deaerator
18 570533 C.H.W. flow-return group within main circuit flow switch
19 573528 Gasket 1/2" 13
20 ------ Safety valve exhaust pipe 11
21 569292 Safety valve 3 bar
22 570454 C.H.W. flow pipe
23 570562 Filling cock
24 570940 Cold water inlet pipe
25 570456 Gas inlet pipe
26 570446 Gas valve support
27 571119 Main circuit flow switch pipe
28 569390 Gasket 1/4" 13
29 571002 C.H.W. divertor valve pipe
30 570543 Thermostat bulb clamps
31 571831 D.H.W. thermostat
32 564976 Thermostat dielectric spacer
33 571830 Two-stage thermostat for heating installation
34 569421 Control knob
35 570772 Cable holder
36 571802 Unipolar switch
37 569423 D.H.W. switch
38 569424 On/Off switch with neon light
39 571832 Temperature/pressure gauge
40 573694 Timer opening cover
41 571668 Control panel
42 571829 Overheat thermostat
43 ------ Terminal board 11
44 571687 Electric system
45 570593 Main power supply cord
46 569605 Sealed chamber from panel
47 572631 Full case complete
48 573047 Ventilator fixing plate
49 569431 Fan
50 569433 Seal
51 569434 Venturi collar
52 572382 Venturi device
53 571844 Sealed chamber cover
54 573534 Cable holder D.75
55 571653 Air pressure switch
56 571819 Silicone pipe (negative signal)
57 571575 Silicone pipe (positive signal)
58 570561 Fan power supply cord clamp
59 569458 Cable holders silicone D.2
60 573723 Back insulation panel
61 572168 Fan supply cord
62 570518 Flue hood
63 573721 Front insulation panel
64 573238 Sealed chamber side panel
65 572647 Front combustion chamber panel
Page 4
PART. CODE DESCRIPTION REF. NOTE
66 573242 R.H. combustion chamber panel
67 572749 Main exchanger
68 571612 Inspection plate three holes
69 ------ Sealed chamber back panel 11
70 571611 Sealed chamber lower cover
71 569457 Compensation pipe inspection plate
72 573243 L.H. combustion chamber panel
73 569443 Silicone seal
74 572270 Main burner A
74 572272 Main burner B
75 573720 Side insulation panel
76 560146 3 micro square for pressure gauge valve
77 570453 C.H.W. return connection pipe from secondary exchanger
78 566098 D.H.W. exchanger
79 570643 Filling cock pipe/C.H.W. flow pipe
80 571126 Hot water outlet pipe
81 560166 90° divertor valve without microswitches
82 569384 Pushing cap
83 572714 Clips for pressure gauge valve micro
84 569413 Silent washer 37x26x2
85 569446 Brass lock nut 3/4"
86 573576 Compensation tube
87 571425 Gas valve
88 569254 Gas valve gasket
89 571797 P.C.B. support
90 571998 P.C.B.
91 571803 Signal lamp cap
92 571799 Wired block signal lamp
93 569391 Main power supply cord clamper with terminal
94 573441 Detection electrode
95 569560 Ignition electrode (R.H.)
96 569561 Ignition electrode (L.H.)
97 569558 Special cable for ignition electrode
98 570447 Gas pipe to the main burner
99 572138 Burner jet washer
100 570248 Burner jet 1.25mm A
100 570251 Burner jet 0.72mm B
101 569442 View window seal
102 573567 View window glass
103 573566 View window holder
301 573603 Divertor valve maintenance kit
331 571478 Wired rectifier
332 573711 HW gas valve 220V multigas modulating regulator
333 573793 Valve control pressure intake
341 569472 Female insert housing for R.H.Hinge
342 569470 Hinge pivot
343 571173 Full case door
344 569473 Female insert housing for L.H.Hinge
345 569474 Female insert for R.H. hinge
346 571155 Insert with ball
347 569475 Female insert for L.H. hinge
348 569656 Left hand side casing panel
349 569657 Frontal casing panel
350 569655 Right hand side casing panel
361 569281 Burner jet 1.25 full kit (Natural gas) 12
362 569282 Burner jet 0.72 full kit (LPG) 12
371 570714 Service kit for main circuit flow switch
372 570713 Microswitch for main circuit flow switch
373 573824 Microswitch fixing spring
Page 5
NOTE DESCRIPTION
11 Not supplied as a spare part
12 Not illustrated
13 25 piece kit
Page 6
U S E F U L T I P S
Instructions for the reader
This manual of "SPARE PARTS EXPLODED VIEW GAS WALL BOILERS" is
designed to help you find the right spare part for repairs quickly and easily.
The drawings and list of spare parts refer only to the models shown in the table
under the drawing.
Remember that the list of spare parts will help you find:
• the position in the drawing of all the parts available as spares under the
("PARTS" column);
• the code to use when requesting the spare part;
• a brief description of the spare part;
• the applicability of the spare part to specific models ("REF." column). If the box
is blank, the spare part may be used for all the models to which the blow up
refers;
• comments.
Requesting spare parts
When ordering spare parts remember to specify the code and number of parts
required, as well as the name and address of the company requestin the spare
part.
Orders should be sent by fax to MTS S.P.A., on the following numbers:
0732-626473 (FAX)
0732-628773 (FAX)
Contacting the MTS S.P.A. Servicing Centre
The MTS S.P.A. Servicing Centre has a special department that provides detailed
information on how to resolve any of the technical problems that may be
encountered with the GAS WALL BOILERS. Servicing Centres may use this
service by calling the following numbers:
071-7100594
167-217718
28/04/98
210R027
Merloni
TermoSanitari
Servizio Assistenza Tecnica
via Pascoli, 1
60044 FABRIANO (AN)
spa
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