Viessmann VITOGAS 050, RS-8, RS-11, RS-14 Technical Data Manual
Technical Data Manual
Model Nos. and pricing: see Price List
VITOGAS 050
Cast iron hot water heating boiler
550 to 1050 MBH / 161 to 308 kW
Vitogas 050
RS Series
Gas-/Propane-Fired Boiler
cast iron construction
atmospheric
single- or two-stage burners
Heating input: 550 to 1050 MBH
5167 455 v1.2 01/2004
161 to 308 kW
Product Information
Vitogas 050
For commercial applications, be it new
construction or retrofit, the Vitogas 050,
RS Series is the mid-efficiency, quality
decision. The Vitogas 050 is economical in
two ways - initial investment and
operational cost.
The benefits at a glance:
H High operational reliability and a long
service life due to special high-grade gray
cast iron with lamellar graphite and
uniform heat transfer to avoid stress
fractures.
H Large diameter, stainless steel burners
provide quiet, reliable performance;
combustion efficiency of 85%.
H Optimal operation due to wide water
passageways and a wet-base, sectional
design.
H Although the heat exchanger block is fully
factory assembled, it may be shipped in
section blocks for field assembly to
accommodate tighter handling.
H Problem-free transport into
difficult-to-access boiler rooms due to cast
iron sectional design.
Heat exchanger surfaces of special
high-grade gray cast iron for high
operational reliability and a long
service life
2
5167 455 v1.2
Technical Data
Technical data
Boiler Model Model No. RS-8 RS-11 RS-14
CSA input full load
partial load
CSA output full load
partial load
Combustion efficiency % 85 85 85
Heat exchanger surface area ft
Cast iron sections 8 11 14
Burners 7 10 13
Manifold pressure
Natural gas full load
partial load
Propane gas full load
partial load “w.c. Not available in 2-stage configuration
Max. gas supply pressure
Dimensions
Depth
Width
Height
Overall dimensions
Total depth
Total width
Total height
– Height 1 (control unit in
position for operation)
– Height 2 (control unit in
position for servicing)
Weight, boiler with insulation, lbs
burners and packaging kg
Boiler water content USG
Max. operating pressure psig
Boiler connections
Boiler supply and return
Boiler drain
Gas supply connection Ø”
Vent pipe collar Ø” inches
*1
Combustion results are based on a heating system supply temperature of 167°F / 75°C, return 140°F / 60°C.
*2
For two-stage boilers only.
*3
Partial load manifold pressure is factory preset. Any attempt to readjust in the field will render boiler warranty null and void.
*4
If the gas supply pressure is higher than the maximum permissible value, a separate field supplied gas regulator must be installed
upstream of the boiler gas train.
*1
*1
MBH
kW
*2
MBH
kW
MBH
kW
*2
MBH
kW
2
2
m
“w.c.
*3
“w.c.
“w.c.
*4
“w.c. 14 14 14
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
ltr
kPa
Ø”
550
161
372
109
468
137
316
93
99
9.2
3.5
1.3
10
34¾
883
36¼
921
53¾
1366
47
1195
36¼
921
60¼
1531
73½
1867
1280
582
20
77
60
414
800
234
541
158
680
199
460
135
141
13.1
3.5
1.3
10
34¾
883
49½
1255
53¾
1366
47
1195
49½
1255
60¼
1531
73½
1867
1709
777
28
106
60
414
2
2
(male thread)
Ø”
¾
¾
1 1¼ 1¼
(male thread)
Ø” mm
10
250
12
300
1050
308
710
208
893
261
604
177
182
16.9
3.5
1.3
10
34¾
883
62¼
1582
53¾
1366
47
1195
62½
1588
60¼
1531
73½
1867
2138
972
35
134
60
414
14
350
2
¾
"
For information regarding other Viessmann System Technology componentry, please reference documentation of the respective product.
5167 455 v1.2
3
Technical Data
FGC
Height 2
Height
Height 1
Legend
BD Boiler Drain
BWR Boiler Water Return
BWS Boiler Water Supply
FGC Flue Gas Collar
GC1 Main Gas Connection
GC2 Pilot Gas Connection
PC Pilot Cover Plate
PRV Pressure Relief Valve Connection
PRV
PC
BD
Total width
BWS
GC2
GC1
BWR
15¾”/400 mm
Depth
Total depth
4½”
110 mm
52½” / 1335 mm
50½” / 1284 mm
32½” / 830 mm
19” / 481 mm
4
5167 455 v1.2
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