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Technical Data
(continued)
Boiler Model
Model No. WB2B-
Dimensions
Overall depth
Overall width
Overall height
Height with flue gas elbow
(accessory)
*5
Flue gas
Temperature (at boiler return
temperature of 86ºF / 30ºC)
– at rated full load
– at rated partial load
Temperature (at boiler return
temperature of 140ºF / 60ºC)
Average condensate
*6
flow rate
with natural gas and
– T
/T
=104/86ºF / 40/30ºC
S
R
*7
Condensate connection
*8
Boiler flue gas connection
Combustion air supply
*8
connection (coaxial)
A
*
For high altitude installations (5,000 - 10,000 ft.), the input for model WB2B 105 will have an altitude de-ration of 14% for 5,000 ft.
and 28% for 10,000 ft. (average of 2.8% / 1,000 ft.).
*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, WB2B Installation Instructions for details.
*8
For side wall vent installations (coaxial system):
Do not exceed max. equivalent length specified in the 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 with any other appliance.
Venting material to be supplied by Viessmann only; side wall vent installation must include Viessmann protective screen!
For details refer to the Installation Instructions for the Vitodens 200-W, WB2B Venting System.
*9
Add 2½" / 65 mm for coaxial vent pipe transition adaptor.
" For information regarding other Viessmann System Technology componentry, please reference documentation of respective product.
inches
mm
inches
mm
inches
mm
inches
mm
ºF/ºC
ºF/ºC
ºF/ºC
USG/day
ltr/day
hose
nozzle
∅ in
∅
in/mm
outer
∅ in/mm
Additional Information
80
21
530
19
480
33½
850
*9
47¼
1200
95/35
91/33
149/65
6.6-7.9
25-30
1
3
4
/
/110
8
6/150
A
105*
21
530
19
480
33½
850
*9
47¼
1200
104/40
95/35
158/70
9.5-10.5
35-40
1
3
4
/
/110
8
6/150
75
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