ACV HeatMaster 25 TC Installation, Operating And Servicing Instructions page 11

INSTALLATION
FLUE PRESSURE DROP IN
PASCAL
(1 Pascal = 0.01 mbar)
Straight pipe 1 m
Pipe with measuring point
90° bend
45° bend
Vertical terminal
Horizontal terminal
This table is based on ACV equipment and cannot be applied elsewhere.
C
33(x)
C B
33(x) 23P
C
: Connection by pipes with a horizontal terminal that simultaneously takes in combustion air for the burner and discharges combustion products
13(x)
outside through openings that are either concentric or close enough together to be subjected to similar wind conditions.
C
: Connection by pipes with a vertical terminal that simultaneously takes in fresh air for the burner and discharges combustion products outside
33(x)
through openings that are either concentric or close enough together to be subjected to similar wind conditions.
C
: Connection by two ducts to a collective duct system serving more than one appliance; this system of collective ducts features two ducts
43(x)
connected to a terminal unit that simultaneously takes in fresh air for the burner and discharges the combustion products outside through
openings that are either concentric or close enough together to be subjected to similar wind conditions.
C
: Connection to separate ducts for supplying combustion air and discharging combustion products; these ducts may end in zones with different
53(x)
pressure levels.
C
: Connection with an individual system of which the exhaust duct for the combustion products is installed in an exhaust pipe that is part of the
93(x)
building. The appliance, the exhaust duct and the terminal units are certified as an inextricable assembly.
B
: Connection to an exhaust duct discharging the combustion products outside of the installation area, with the combustion air being drawn
23
directly from this area.
B
: Connection to a combustion product exhaust system designed to operate with positive pressure.
23P
Concentric pipe
HM 25 / 35 TC HM 70 / 85 TC
Ø 80/125 mm Ø 100/150 mm
5.0 8.0
2.5 4.0
6.0 9.6
4.0 6.4
20.0 32.0
15.0 24.0
C
93(x)
EN • 11
Separate air inlet
HM 25 / 35 TC HM 70 / 85 TC
Ø 80 mm Ø 100
MM
1.5 4.1
— —
1.9 5.2
1.3 3.5
— —
— —
C C
43(x) 43(x)
C C
43(x) 43(x)
C C
43(x) 43(x)
Separate flue gas exhaust
HM 25 / 35 TC HM 70 / 85 TC
Ø 80 mm Ø 100
MM
2.0 5.5
1.0 2,7
3.4 9.3
2.3 6.3
— —
— —
C
13(x)
C
53(x)
664Y5300 • A