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Technical Data
(continued)
Boiler Model
Model No.
Dimensions
Overall depth
Overall width
Overall height
Gas supply connection
*5
Flue gas
Temperature (at boiler re-
turn temperature of
86 ºF/30 ºC)
– at rated full load
– at rated partial load
Temperature (at boiler re-
turn temperature of 140
ºF/60 ºC)
Flue gas value
Mass flow rate (of flue
gas)
– at rated full load
– at rated partial load
Available draught
Average condensate
*6
flow rate
with natural gas
– T
/T
=122/86ºF/50/30
S
R
ºC
Condensate connec-
*7
tion
Boiler flue gas connec-
*8
tion
Combustion air supply
*8
connection
*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 100-W Installation Instructions for details.
*8
For detailed information refer to the Vitodens Venting System Installation Instructions (PN 5285 268).
"For information regarding other Viessmann System Technology componentry, please reference documentation of respective product.
inches
mm
inches
mm
inches
mm
NPTF
(female)"
ºF/ºC
ºF/ºC
ºF/ºC
lbs/h
kg/h
lbs/h
kg/h
Pa
mbar
USG/day
ltr/day
hose
nozzle
∅ in
∅
in/mm
outer
∅ in/mm
WB1A 8-24
13.4
340
15.7
400
27.6
700
¾
127/53
90/32
167/75
79.2
36.0
33.0
15.0
100
1.0
1.8-2.1
7-8
1
3
2
/
/60
8
4/100
Appendix
Standard heating boiler
WB1A 8-30
13.4
340
15.7
400
27.6
700
¾
131/55
90/32
172/78
100.1
45.5
33.0
15.0
100
1.0
2.1-2.4
8-9
1
3
2
/
/60
8
4/100
69
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