4
VITOCROSSAL 300, CT3
Technical data
Boiler model
CT3-
17
22
28
37
46
57
72
89
Input
MBH
638
846
1071
1389
1726
2160
2702
3361
kW
187
248
314
407
506
633
792
985
Output
*1
MBH
626
827
1044
1350
1675
2094
2616
3252
kW
183
242
306
396
491
614
767
953
Combustion efficiency
Thermal efficiency
%
%
98.3
98.1
97.8
97.7
97.4
97.4
97.2
97.2
97.1
97.1
96.9
96.9
96.8
96.8
96.7
96.7
Boiler output at
80/60° C - 176/140° F
70/50° C - 158/122° F
40/30° C - 104/86° F
MBH
kW
MBH
kW
MBH
kW
554
162.3
576
168.7
607
177.8
734
215.3
763
223.7
805
235.8
930
272.6
966
283.2
1019
298.6
1206
353.3
1253
367.1
1321
387.1
1502
440.2
1561
457.4
1645
482.2
1879
550.7
1953
572.2
2059
603.2
2351
689.0
2443
716.0
2575
754.8
2924
857.0
3038
890.4
3203
938.7
Boiler standby loss
at maximum input
80/60° C - 176/140° F
70/50° C - 158/122° F
40/30° C - 104/86° F
Btu
/h
W
%
Btu/h
W
%
Btu/h
W
%
2566
752
0.40
2139
627
0.34
856
251
0.13
2818
826
0.33
2347
688
0.28
938
275
0.11
3064
898
0.29
2552
748
0.24
1020
299
0.10
3583
1050
0.26
3047
893
0.22
1143
335
0.08
4299
1260
0.25
3583
1050
0.21
1433
420
0.08
5240
1536
0.24
4367
1280
0.20
1747
512
0.08
5753
1686
0.21
4794
1405
0.18
1918
562
0.07
6633
1944
0.20
5753
1686
0.17
2211
648
0.07
Dimensions - boiler as shipped
(p)Length (door removed)
(q)Width 1 (max. shell width)
(r)Height
*2
(max.)
Overall dimensions
(s)Overall length
(t)Overall width (incl. insulation
and control)
(u)Overall height (to top of
installed
header)
(v)Width (upper with jacketing)
(w)Width (lower with jacketing)
Boiler support frame
(x)Length
(y)Width
(z)Height
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
59¾
1516
27
684
69
7
/
8
1773
64¼
1636
40
1016
79
7
/
8
2027
34½
874
31½
798
35¼
895
27¼
690
2¾
70
62¾
1594
27
684
71
d
1808
67½
1714
40
1016
81
d
2062
34½
874
31½
798
38
e
975
27¼
690
2¾
70
66
1675
27
684
71¼
1811
70½
1795
40
1016
81¼
2065
34½
874
31½
798
41½
1055
27¼
690
2¾
70
69
1751
31½
800
79
f
2023
73½
1871
44½
1132
93
5
/
16
2370
39
990
36
914
47¼
1200
32½
800
2¾
70
72¼
1829
31½
800
79
f
2023
76¾
1949
44½
1132
93
5
/
16
2370
39
990
36
914
50
1270
32½
800
2¾
70
78¼
1985
31¼
800
79
f
2023
83
2105
44½
1132
93
5
/
16
2370
39
990
36
914
56¼
1430
32½
800
2¾
70
82½
2095
37½
951
88
2235
85½
2172
49
1249
101¾
2585
45
d
1147
39
990
56¼
1430
35½
900
2¾
70
90
2289
37½
951
88
2235
93¼
2366
49
1249
101¾
2585
45
d
1147
39
990
64
d
1630
35½
900
2¾
70
Weight
boiler shell
front cone (includes combustion
chamber door)
Overall weight
complete with insulation and
control (less burner)
lbs
kg
lbs
kg
lbs
kg
1012
459
413
187
1228
557
1114
505
413
187
1352
613
1202
545
413
187
1455
660
1671
758
490
222
1962
890
1759
798
490
222
2064
936
1995
905
490
222
2322
1053
2706
1230
600
273
3014
1370
3014
1370
600
273
3344
1520
*1
Output ratings are based on the IBR BTS-2000 “method to determine efficiency of commercial space heating boilers”.
*2
Boilers CT3-17, 22, 28 are shipped with header attached (u) - see overall height dimensions and add 4” (100 mm) for the wood blocks
as per transportation height.
Technical Data
5
2
8
5
8
7
1
v
1
.9
