219
5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Technical Data
(continued)
Specifications
Boiler Model
CA3
2.5
3.0
3.5
4.0
5.0
6.0
Boiler Water Content
USG
108
108
151
143
227
218
(L)
(410)
(410)
(570)
(540)
(860)
(825)
Heat Exchanger Surface
ft.
2
142.7
142.7
170.2
192.5
244.1
288.8
(m
2)
(13.3)
(13.3)
(15.8)
(17.9)
(22.7)
(26.8)
Maximum Operating Temperature
°F
(°C)
210
(99)
210
(99)
210
(99)
210
(99)
210
(99)
210
(99)
Maximum Adjustable High Limit
°F
(°C)
203
(95)
203
(95)
203
(95)
203
(95)
203
(95)
203
(95)
Maximum Operating Pressure
psig
160
160
160
160
160
160
(bar)
(11)
(11)
(11)
(11)
(11)
(11)
Boiler Connections
B
oiler supply and return
(BS), (BR) (ANSI flanges)
in.
(mm)
4
(100)
4
(100)
4
(100)
4
(100)
4
(100)
6
(150)
Safety supply
in.
2
2
2
2
2
2
Boiler drain
in.
2@1
b
2@1
b
2@1
b
2@1
b
3@1
b
3@1
b
Condensate drain
(barbed fitting)
in.
c
c
c
c
c
c
Gas connection
in.
2
b
2
b
2
b
2
b
3
3
Vent Pipe
Internal diameter
in.
10
10
12
12
16
16
(mm)
(254)
(254)
(306.8)
(306.8)
(408.4)
(408.4)
Combustion Air
Internal diameter
(for direct vent sealed combustion
using the combustion air intake kit
optional accessory)
in.
(mm)
10
(254)
10
(254)
12
(306.8)
12
(306.8)
16
(408.4)
16
(408.4)
Flue Gas Values
Temperature (at a return
temperature of 86°F (30°C)
at rated input
°F
113
113
117
117
122
122
(°C)
(45)
(45)
(47)
(47)
(50)
(50)
at partial load
°F
91
91
91
91
91
91
(°C)
(33)
(33)
(33)
(33)
(33)
(33)
Temperature (at a return
temperature of 140°F (60°C)
at rated input
°F
167
167
162
162
167
167
(°C)
(75)
(75)
(72)
(72)
(75)
(75)
Mass flow rate (of flue gas)
at rated input
lbs/h
2216
2216
3109
3549
4442
5324
(kg/h)
(1007)
(1007)
(1410)
(1610)
(2015)
(2415)
at partial load
lbs/h
267
320
320
425.5
320
425.5
(kg/h)
(121)
(145)
(145)
(193)
(145)
(193)
Max. Condensate Flow Rate
for NG and LPG
USG/h
(L/h)
24
(91)
29
(109)
34
(129)
38
(144)
48
(182)
58
(220)
Pressure
at boiler flue outlet
pa
(max.)
100
100
100
100
100
100
at rated input
“w.c.
(max.)
0.4
0.4
0.4
0.4
0.4
0.4
Standby Loss
At boiler water temperature
158°F (70°C) [room
temperature 68°F (20°C)]
BTU/h
(W)
%
6227
(1825)
0.25
7469
(2197)
0.25
8750
(2564)
0.25
10000
(2931)
0.25
12500
(3663)
0.25
15000
(4396)
0.25
