Technical Data
VITOROND 200, VD2A
5
Technical Data
Boiler model
VD2A-
125
160
195
230
270
Boiler water content
USG
ltr
32
122
41
154
49
186
57
217
66
249
Max. boiler temperature
*4
(= fixed high limit)
°F
°C
250
121
250
121
250
121
250
121
250
121
Max. allow. operating
pressure
*5
psig
85
85
85
85
85
Boiler connections
*6
Boiler supply and return
Drain valve - sediment faucet
in
in
2½
¾
2½
¾
2½
¾
2½
¾
2½
¾
Heating surface area
Flue gas side
ft.
2
m
2
53
4.9
70
6.5
85
7.9
102
9.5
117
10.9
Water side
ft.
2
m
2
43
4.0
57
5.3
71
6.6
85
7.9
99
9.2
Flue gas
– Temperature (gross)
*7
– Flue gas mass flow rate
With minimum heating input
and a 2-stage burner
(operation of stage 1)
– Temperature
– Flue gas mass flow rate at
minimum input rate
°F
°C
lbs/h
kg/h
°F
°C
lbs/h
kg/h
365
185
470
213
257
125
282
128
365
185
602
273
257
125
362
164
365
185
732
332
257
125
439
199
365
185
864
390
257
125
516
234
365
185
1014
457
257
125
604
274
Standby loss
based on max. heating input
and hot water supply and
return temperatures of
167 / 140°F
75 / 60°C
%
0.40
0.38
0.28
0.25
0.25
Vent pipe collar
outer
∅
*8
in
mm
8
200
8
200
8
200
8
200
8
200
Flue gas resistance
“w.c.
0.26
0.38
0.40
0.48
0.64
Flue gas volume
of combustion chamber and
flue gas passageways
ft.
3
m
3
4.909
0.139
6.039
0.171
7.169
0.203
8.299
0.235
9.429
0.267
Required flue draft
Category I
Pa
“w.c.
0
0
0
0
0
0
0
0
0
0
Positive pressure
Category III
Pa
“w.c.
20
0.08
20
0.08
20
0.08
20
0.08
20
0.08
*4
The maximum supply operating temperature (= max. adjustable high limit) lies approx. 27°F / 15°C below the fixed high limit setting.
*5
May be less in some Canadian provinces.
*6
Connections for boiler connection kit (standard equipment).
*7
Combustion results are based on 13.0% CO
2
with fuel oil #2 and 10% CO
2
with natural gas, as well as
a system supply temperature of 167°F / 75°C, and a system return temperature of 140°F / 60°C.
Measured flue gas temperature with a combustion air temperature of 68°F / 20°C and a boiler water temperature of 176°F / 80°C.
*8
Vent pipe collar diameter does not automatically indicate vent/chimney size. See page 20 for different venting options (categories).
"
The combustion burner head material must be suitable for temperatures of at least 932°F / 500°C.
"
For information regarding other Viessmann System Technology componentry, please reference documentation of respective product.
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