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5608 741 - 04
Vitodens Rigid and Flex Venting Systems Installation
Direct Venting (Two-pipe System)
Vent Length Requirements
(continued)
Vitodens 100-W WB1B 26, 35,
Vitodens 222-F B2TA 19, 35
Vitodens 222-F B2TB 19, 35
Vitodens 200-W WB2B 19, 26, 35
Vitodens 200-W B2HA 19, 28, 35
Vitodens 200-W B2HB 19, 26, 35
Legend
A
Support system
B
Exhaust pipe termination with screen
C
Combustion air intake with screen
a Equivalent vent length (exhaust)
b Equivalent vent length (air intake)
A
B
C
a
b
Exhaust/
Air intake
pipe fittings
Field
supplied
Flue starter adaptor
Air intake starter adaptor
Boiler adaptor
Caulk here
(exterior caulking)
Air
Flue
Side wall
Legend
A
Support system
B
Exhaust pipe termination with screen
C
Combustion air intake with screen
a Equivalent vent length (exhaust)
b Equivalent vent length (air intake)
Equivalent vent length calculation example - CPVC system
(continued)
A
B
C
a
b
Side wall
Caulk here
Exterior caulking
Exhaust/Air intake
pipe and fittings
field supplied
Starter adaptor
Parallel adaptor
Boiler adaptor
Air
Flue
Vitodens 200-W WB2B 45, 60, 80, 105,
Vitodens 200-W B2HA 45, 60, 88, 100, 112, 150
Vitodens 200-W B2HB 45, 57