Technical Data
VITOROND 200, VD2
5
Technical data
Boiler model
VD2-
125
160
195
230
270
Max. allow. operating
pressure
*3
psig
75
75
75
75
75
Boiler connections
Boiler supply and return
Safety supply
*4
Safety return
*4
Drain valve
inches
inches
inches
inches
2½
1½
1½
¾
2½
1½
1½
¾
2½
1½
1½
¾
2½
1½
1½
¾
2½
1½
1½
¾
Heating surface area
Flue gas side
ft.
2
m
2
40
3.7
49.5
4.6
60
5.6
70
6.5
79.5
7.4
Water side
ft.
2
m
2
32
3.0
37.5
3.5
43
4.0
49.5
4.6
55
5.1
Flue gas
*5
– Temperature (gross)
*6
– 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
374
190
470
213
266
130
282
128
374
190
602
273
266
130
362
164
374
190
732
332
266
130
439
199
374
190
864
390
266
130
516
234
374
190
1014
457
266
130
604
274
Boiler standby loss based on
max. heating input and hot
water supply and return
temperatures of 167 / 140°F
75 / 60 °C
%
0.30
0.27
0.24
0.20
0.18
Vent pipe collar
outer
∅
*7
in
mm
8
200
8
200
8
200
8
200
8
200
Flue gas resistance
“w.c.
0.20
0.35
0.51
0.67
0.75
- at upper end of rated input
mbar
0.5
0.9
1.3
1.7
1.9
*1
Inch dimensions are rounded to the nearest ¼”.
*2
The maximum supply operating temperature (= max. adjustable high limit) lies approx. 27°F / 15°C below the fixed high limit setting.
*3
May be less in some Canadian provinces.
*4
Connections for boiler connection kit (standard equipment).
*5
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.
*6
Measured flue gas temperature with a combustion air temperature of 68 °F / 20 °C and a boiler water temperature of 176 °F / 80 °C.
*7
Vent pipe collar diameter does not automatically indicate vent/chimney size. See page 13 for details.
"
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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