Technical data

Additional Information
56
Technical Data (continued)
Table 4 (continued)
Boiler Model Model No. WB2B 19 26 35
Dimensions
Overall depth
Overall width
Overall height
Height with flue gas elbow
(accessory)
inches
mm
inches
mm
inches
mm
inches
mm
14
360
17¾
450
33½
850
44
1116
14
360
17¾
450
33½
850
44
1116
14
360
17¾
450
33½
850
44
1116
Flue gas
*5
Temperature (at boiler return
temperature of 86ºF / 30ºC)
– at rated full load
– at rated partial load
Temperature (at boiler return
temperature of 140ºF / 60ºC)
ºF/ºC
ºF/ºC
ºF/ºC
113/45
95/35
154/68
113/45
95/35
158/70
113/45
95/35
158/70
Average condensate
flow rate
*6
with natural gas and
– T
S
/T
R
=104/86ºF / 40/30 ºC USG/day
ltr/day
2.6-3.4
10-12
2.9-3.4
11-13
4-4.5
15-17
Condensate connection
*7
hose
nozzle
∅ in 1 1 1
Boiler flue gas connection
*8
∅
in/mm
2
3
/
8
/60 2
3
/
8
/60 2
3
/
8
/60
Combustion air supply
connection (coaxial)
*8
outer
∅ in/mm 4/100 4/100 4/100
*5
Measured flue gas temperature with a combustion air temperature of 68°F / 20°C.
*6
Based on typical boiler cycles, including partial load conditions.
*7
Requires 1” / 25 mm tubing. See Vitodens 200-W Installation Instructions for details.
*8
For side wall vent installations (coaxial system):
Do not exceed max. equivalent length specified in the Venting Installation Instructions of the Vitodens 200-W, WB2B Venting System.
A maximum of five elbows may be installed in the vent system.
Do not attempt to common-vent Vitodens 200-W WB2B with any other appliance.
For details refer to the Installation Instructions for the Vitodens 200-W, WB2B Venting System.
" For information regarding other Viessmann System Technology componentry, please reference documentation of respective product.
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