Viessmann VITOCROSSAL 300 Instruction manual

V
VV
VI
II
IT
TT
TO
OO
OC
CC
CR
RR
RO
OO
OS
SS
SS
SS
SA
AA
AL
LL
L 3
33
30
00
00
00
0
Gas-fired condensing boiler
638 to 3361 MBH / 187 to 985 kW
Product may not be exactly as illustrated.
Vitocrossal 300 CT3 boiler with
Vitotronic NR2 control
Technical Data Manual
Model Nos. and pricing: see Price List
Vitocrossal 300
CT3 Series
High efficiency, gas-fired condensing oiler
for natural gas or liquid propane
with vertical Inox-Crossal heat exchanger surfaces
of corrosion-resistant stainless steel.
For operation without low limit on boiler return water
temperature.
For closed loop hot water heating systems with maximum
supply water temperatures of 210°F / 99°C for a
maximum operating pressure of 30 psig.
Heating input: 638 to 3361 MBH
187 to 985 kW
5
2
8
5
8
7
1
v
1
.
9
1
1
/
2
0
1
2

Product Information
2VITOCROSSAL 300, CT3
VITOCROSSAL 300
The enefits at a glance:
HVertical Inox-Crossal heating surfaces for
high operational reliability and long service
life.
– Easy dispersal of condensate through
vertical gas flues; therefore no
concentration of condensate.
– Increased self-cleaning effect through
smooth stainless steel surfaces.
HHighly efficient heat transfer and high
condensation rate through
– heat exchanger surfaces which intensely
turbulate the flue gas flow
– boiler water and hot gases flowing in
counterflow.
HEfficiency up to 98.3 % through intensive
condensation. The flue gas temperature is
only approx. 9 - 27°F / 5 - 15°C above
boiler return temperature.
HClean combustion – through perfect match
of burner and boiler low combustion
chamber loading and straight-through
combustion chamber.
HTwo return connections – providing
separate connection for heating circuits
with lower return temperature. This leads
to increased hot gas condensation.
HEasy handling in boiler rooms through
particularly low build height and weight;
also available in sections.
HEasy installation and elimination of wiring
mistakes with Viessmann prewired plug-in
system.
HHeating boiler heating system control
domestic hot water storage tank and all
other Viessmann system technology
components are co-ordinated to one
another. All components are
design-matched for quick installation.
HEconomical and safe heating system
operation through Vitotronic digital control
system with communication capability.
Tailored to every need covering all known
control strategies and applications.
Standard LON BUS for complete
integration into building management
systems.
Possible integration into the Vitocontrol
control panel.
5
2
8
5
8
7
1
v
1
.
9
Vitocrossal 300 boiler efficiency dependent on system
heating water return temperatures and load conditions

Product Information
Cut-Away Section
Product may not be exactly as illustrated
VITOCROSSAL 300, CT3 3
Two return Stainless steel Stainless steel Wide diameter Highly effective, 4”
connections arranged Inox-Crossal heat water-cooled water walls – proper wrap-around insulation
a ove each other exchanger surfaces com ustion cham er gravity circulation
5
2
8
5
8
7
1
v
1
.
9

4VITOCROSSAL 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
Com ustion 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 stand y 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 - oiler 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
71d
1808
67½
1714
40
1016
81d
2062
34½
874
31½
798
38e
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
79f
2023
73½
1871
44½
1132
93
5
/ 16
2370
39
990
36
914
47¼
1200
32½
800
2¾
70
72¼
1829
31½
800
79f
2023
76¾
1949
44½
1132
93
5
/ 16
2370
39
990
36
914
50
1270
32½
800
2¾
70
78¼
1985
31¼
800
79f
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
45d
1147
39
990
56¼
1430
35½
900
2¾
70
90
2289
37½
951
88
2235
93¼
2366
49
1249
101¾
2585
45d
1147
39
990
64d
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-2 “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” (1 mm) for the wood blocks
as per transportation height.
Technical Data
5
2
8
5
8
7
1
v
1
.
9

Technical Data
VITOCROSSAL 300, CT3 5
Technical data (continued)
Boiler model CT3- 17 22 28 37 46 57 72 89
Boiler water content USG 71.3 78.2 87.2 129.5 140.8 150.6 199.2 221.9
ltr 270 296 330 490 533 570 754 840
Heat exchanger surface
water-cooled ft.
2
85.0 107.6 123.8 176.5 200.2 245.4 316.5 383.2
m
2
7.9 10.0 11.5 16.4 18.6 22.8 29.4 35.6
Max. operating temperature °F 210
°C 99
Max. operating pressure psig 30
kpa 207
Flue gas resistance “w.c. 0.40 0.56 0.64 0.80 0.88 1.08 1.20 1.32
Pa 100 140 160 200 220 270 300 330
Boiler connections
boiler supply (BS)
& return (BR1)
Boiler return (BR2)*
3
Safety supply
Boiler drain
Condensate drain
inches
mm
inches
mm
inches
mm
inches
inches
2½
65
2
50
1¼
32
1
½
2½
65
2
50
1¼
32
1
½
3
80
2
50
2
51
1
½
4
100
3
75
2
50
1
½
4
100
3
75
2
50
1
½
4
100
3
75
2
50
1
½
5
125
4
100
2½
65
1
½
5
125
4
100
2½
65
1
½
Vent pipe
internal Ø inches
mm
8
201
8
201
8
201
10
251
10
251
10
251
12
301
12
301
Flue gas values*
4
Temperature (at a return
temperature of 86°F / 30°C)
- at rated input
- at partial load
Temperature (at a return
temperature of 140°F / 60°C)
Mass flow rate (of flue gas)
Gas volume of combustion
chamber and heat exchanger
°F
°C
°F
°C
°F
°C
lbs/h
kg/h
ft.
3
m
3
113
45
104
40
167
75
704
320
8.83
0.250
113
45
104
40
167
75
928
422
9.92
0.281
113
45
104
40
167
75
1179
536
12.00
0.340
113
45
104
40
167
75
1531
696
15.90
0.450
113
45
104
40
167
75
1903
865
18.40
0.521
113
45
104
40
167
75
2380
1082
21.54
0.610
113
45
104
40
167
75
2979
1354
40.61
1.150
113
45
104
40
167
75
3705
1684
42.73
1.210
Pressure
at boiler flue outlet
- at partial input
- at maximum input
Pa
Pa
±0
-3
-3
-4
±0
-2
-5
±0
±0
±0
±0
±0
±0
±0
±0
±0
*3
Boiler has two return connections - the heating return with the lower temperature should be connected to the boiler return BR1.
*4
Values for calculating the size of the flue system based on 1 % CO
2
for natural gas.
Flue gas temperatures measured as gross values at 68ºF / 2 ºC combustion air temperature.
The details for partial load refer to an output of 3 % of rated input. Calculate the flue gas mass flow rate accordingly when the
partial load differs from that stated above (subject to the burner mode).
"
For information regarding other Viessmann System Technology componentry, please reference documentation of respective product.
5
2
8
5
8
7
1
v
1
.
9