Viessmann VITOCROSSAL 300 Service Instructions Manual page 23

Vitocrossal 300, CT3 Series Service
Technical Data
Boiler Model
Weight
boiler shell
front cone (includes combustion
chamber door)
Overall weight complete with
insul. and control (less burner)
Boiler water content
Heat exchanger surface
water-cooled
Max. operating temperature
Max. operating pressure
Flue gas resistance
Boiler connections
boiler supply (BS) & return (BR1)
Boiler return (BR2) *3
Safety supply
Boiler drain
Condensate drain
Vent pipe
internal Ø
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
Pressure at boiler flue outlet
- at partial input
- at maximum input
*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 10% CO
measured as gross values at 68ºF (20ºC) combustion air temperature. The details for partial load refer to an output
of 30% 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.
(continued)
CT3- 17
lb. 1012
(kg) (459)
lb. 413
(kg) (187)
lb. 1228
(kg) (557)
USG 71.3
(L) (270)
ft. 2 85.0
(m 2 ) (7.9)
°F
(°C)
psig
kpa
"w.c. 0.40
Pa (100)
in.
2b
(mm) (65)
in. 2
(mm) (50)
in.
1a
(mm) (32)
in. 1
in.
b
in. 8
(mm) (201)
°F 113
(°C) (45)
°F 104
(°C) (40)
°F 167
(°C) (75)
lbs/h 704
(kg/h) (320)
ft. 3 8.83
(m 3 ) (0.250)
Pa
0
Pa -3
22 28 37
1114 1202 1671
(505) (545) (758)
413 413 490
(187) (187) (222)
1352 1455 1962
(613) (660) (890)
78.2 87.2 129.5
(296) (330) (490)
107.6 123.8 176.5
(10.0) (11.5) (16.4)
0.56 0.64 0.80
(140) (160) (200)
3 4
2b
(65) (80) (100)
2 2 3
(50) (50) (75)
2 2
1a
(32) (51) (50)
1 1 1
b b b
8 8 10
(201) (201) (251)
113 113 113
(45) (45) (45)
104 104 104
(40) (40) (40)
167 167 167
(75) (75) (75)
928 1179 1531
(422) (536) (696)
9.92 12.00 15.90
(0.281) (0.340) (0.450)
-3 -5
0
-4 -2
0
for natural gas. Flue gas temperatures
2
Additional Information
46 57
1759 1995 2706
(798) (905) (1230)
490 490 600
(222) (222) (273)
2064 2322 3014
(936) (1053) (1370)
140.8 150.6 199.2
(533) (570) (754)
200.2 245.4 316.5
(18.6) (22.8) (29.4)
210
(99)
30
(207)
0.88 1.08 1.20
(220) (270) (300)
4 4
(100) (100) (125)
3 3
(75) (75) (100)
2 2
(50) (50) (65)
1 1
b b
10 10
(251) (251) (301)
113 113 113
(45) (45) (45)
104 104 104
(40) (40) (40)
167 167 167
(75) (75) (75)
1903 2380 2979
(865) (1082) (1354)
18.40 21.54 40.61
(0.521) (0.610) (1.150)
0 0
0 0
72 89
3014
(1370)
600
(273)
3344
(1520)
221.9
(840)
383.2
(35.6)
1.32
(330)
5 5
(125)
4 4
(100)
2b 2b
(65)
1 1
b b
12 12
(301)
113
(45)
104
(40)
167
(75)
3705
(1684)
42.73
(1.210)
0 0
0 0
23