100
71.03982.03 - EN
INSTALLATION INSTRUCTIONS
35. TECHNICAL SPECIFICATIONS
Model MS
24 MI FF
24 FF
24 MI
24
Category
II
2H3P
II
2H3P
II
2H3P
II
2H3P
Rated heat input
kW
25,8 25,8 26,3 26,3
Reduced heat input
kW
10,6 10,6 10,6 10,6
Rated heat output
kW
24 24 24 24
kcal/h
20.600 20.600 20.600 20.600
Reduced heat output
kW
9,3 9,3 9,3 9,3
kcal/h
8.000 8.000 8.000 8.000
Useful eficiency according to directive 92/42/EEC
—
★★★
★★★
★★
★★
Max. water pressure in CH system
bar
3
3
3
3
Expansion vessel capacity
l
6 6 6 6
Expansion vessel pressure
bar
1
1
1
1
DHW max. water pressure
bar
8
—
8
—
DHW min. dynamic water pressure
bar
0,15 — 0,15 —
Minimum DHW low
l/min
2,0
—
2,0
—
DHW output at ∆T=25 °C
l/min
13,7 — 13,7 —
DHW output at ∆T=35 °C
l/min
9,8
—
9,8
—
Speciic output (*)
l/min
12
—
12
—
Temperature range in heating system
°C
30/85 30/85 30/85 30/85
Temperature range in DHW system
°C
35/60 35/60*** 35/60 35/60***
Type
—
C12-C32-C42-C52-C82-B22
B
11BS
B
11BS
Coaxial lue duct diameter
mm
60 60
-
-
Coaxial air duct diameter
mm
100 100 -
-
2-pipe lue duct diameter
mm
80 80
-
-
2-pipe air duct diameter
mm
80 80
-
-
Flue duct diameter
mm
-
- 125 125
Max. lue mass low rate
kg/s
0,014 0,014 0,020 0,020
Min. lue mass low rate
kg/s
0,014 0,014 0,018 0,018
Max. exhaust temperature
°C
146 146 110 110
Min. exhaust temperature
°C
116 116 85 85
NOx Class
—
3
3
3
3
Type of gas
—
G20 G20 G20 G20
—
G31 G31 G31 G31
Natural gas supply pressure
mbar
20
20
20
20
Propane gas supply pressure
mbar
37
37
37
37
Power supply voltage
V
230 230 230 230
Power supply frequency
Hz
50 50 50 50
Rated power supply
W
130 130 80 80
Net weight
kg
33 32 29 28
Dimensions
Height
mm
730
730
730
730
Width
mm
400
400
400
400
Depth
mm
299
299
299
299
Protection against humidity and water
(**)
IP X5D
IP X5D
IP X5D
IP X5D
(*) according to EN 625
(**) according to EN 60529
(***) with external storage boiler
As DE DIETRICH constantly strives to improve its products, it reserves the right to modify the information contained in this document at
any time and without prior notice. This document is issued purely for the sake of information and should not be considered as a contract
with third parties.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
