Wolf FGB-K Series Installation And Maintenance Instructions For Contractors page 77

Balanced flue system
Provide ventilation for B23, B33, C53
Connection types
Type 1)
open flue
B23P, B33P, C13x,
C33x, C43x, C53,
C53x, C83x, C93x
Marking "x" indicates that all components of the flue gas route are surrounded by combustion air.
1)
In Switzerland, observe the G1 gas guidelines.
2)
Information about multiple connections:
Point Safe differential pressure in accordance with DIN EN 15502-2-1
The maximum safe differential pressure at the lowest thermal load
a
(Δpmax, saf(max))
The maximum safe differential pressure at the highest thermal load
b
(Δpmax, saf(min))
The maximum safe differential pressure at start
c
(Δpmax, saf(start))
The maximum functional differential pressure at the highest thermal load
d
(Δpmax, func(max))
The minimum safe differential pressure
e
(Δpmin, saf)
3064458_201811
31. Technical information, balanced flue
Operating mode
balanced moisture-resistant
flue
X X B33, C53, C83x
Can be connected to
room sealed
chimney balanced
flue
C43x
balanced certified
flue balanced
flue
C13x 2) , C63x
C33x, C53x
FGB-28
77
moisture-
resistant
flue
B23, C53x,
C83x, C93x
FGB-35
25
75
25
25
-200
77