Boiler Model; Weight; Overall Weight Complete With Insul. And Control (W/O Burner); Boiler Water Content - Viessmann Vitocrossal 300 CT3 Series Installation Instructions Manual

Vitocrossal 300, CT3 Series Installation
Technical Data
(continued)

Boiler Model

Weight

boiler shell
Overall weight complete with
insul. and control (w/o 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
*4

Flue gas values

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 68º F (20º C) 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.
CT3- 17 22
lbs 1012 1114
(kg) (459) (505)
lbs 1228 1352
(kg) (557) (613)
USG 71.3 78.2
(L) (270) (298)
ft. 2 89.3 106.6
(m 2 ) (8.3) (9.9)
ft. 2
(m 2 )
psig
kpa
"w.c. 0.40 0.56
Pa (100) (140)
in.
2b 2b
(mm)
(65) (65)
in. 2 2
(mm) (50) (50)
in.
1a 1a
(mm)
(32) (32)
in. 1 1
(mm) (b) (b)
in. 8 8
(mm) (201) (201)
°F 113 113
(°C) (45) (45)
°F 104 104
(°C) (40) (40)
°F 167 167
(°C) (75) (75)
lbs/h 704 928
(kg/h) (320) (422)
ft. 3 8.83 9.92
(m 3 ) (0.250) (0.281)
Pa -3
0
Pa (-3) (-4)
28 37 48
1202 1671 1759
(545) (758) (798)
1455 1962 2064
(660) (890) (936)
87.2 129.5 140.8
(330) (490) (533)
127.0 162.5 184.1
(11.8) (15.1) (17.1)
210
(99)
30
(207)
0.64 0.80 0.88
(160) (200) (220)
3 4 4
(80) (100) (100)
2 3 3
(50) (75) (75)
2 2 2
(51) (50) (50)
1 1 1
(b) (b) (b)
8 10 10
(201) (251) (251)
113 113 113
(45) (45) (45)
104 104 104
(40) (40) (40)
167 167 167
(75) (75) (75)
1179 1531 1903
(536) (696) (865)
12.00 15.90 18.40
(0.340) (0.450) (0.521)
-5
0 0
-2
0 0
for natural gas. Flue gas temperatures
2
Appendix
57 72 89
1995 2706 3014
(905) (1230) (1370)
2322 3014 3344
(1053) (1370) (1520)
150.6 199.2 221.9
(570) (754) (840)
220.7 305.7 372.5
(20.5) (28.4) (34.6)
1.08 1.20 1.32
(270) (300) (330)
4 5 5
(100) (125) (125)
3 4 4
(75) (100) (100)
2
2b 2b
(50)
(65) (65)
1 1 1
(b) (b) (b)
10 12 12
(251) (301) (301)
113 113 113
(45) (45) (45)
104 104 104
(40) (40) (40)
167 167 167
(75) (75) (75)
2380 2979 3705
(1082) (1354) (1684)
21.54 40.61 42.73
(0.610) (1.150) (1.210)
0 0 0
0 0 0
31