ROBUA G Series, Installation, Use And Maintenance Manual

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Heating engineer
Installation, use and maintenance manual – G gas unit heater
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Table 3.12
Data for the calculation of the air/fumes system with Ø 80/110/130 pipes available as optional
G30 G45 G60 G100
Flue gas exhaust pressure drop
Ø 80 mm
Pipe 1 m Pa 2,8 5,9 9,3 22,4
Elbow 90° Pa 3,6 7,8 12,7 31,6
Tee Pa 8,5 17,7 27,9 67,2
Ø 110 mm
Pipe 1 m Pa 0,6 1,2 1,9 4,6
Elbow 90° Pa 1,0 2,2 3,5 8,6
Tee Pa 1,8 3,7 5,8 13,8
Ø 130 mm
Pipe 1 m Pa 0,3 0,5 0,9 2,0
Elbow 90° Pa 0,5 1,1 1,8 4,4
Tee Pa 0,8 1,6 2,6 6,1
Air intake pressure drop
Ø 80 mm
Pipe 1 m Pa 1,0 2,0 3,2 7,5
Elbow 90° Pa 1,4 3,0 4,9 12,3
Tee Pa 2,9 6,1 9,5 22,6
Ø 110 mm
Pipe 1 m Pa 0,2 0,4 0,7 1,6
Elbow 90° Pa 0,4 0,8 1,4 3,4
Tee Pa 0,6 1,3 2,0 4,7
Ø 130 mm
Pipe 1 m Pa 0,1 0,2 0,3 0,7
Elbow 90° Pa 0,2 0,4 0,7 1,7
Tee Pa 0,3 0,6 0,9 2,1
Table 3.13
Data for the calculation of the air/fumes system with Ø 100 pipes
G30 G45 G60 G100
Flue gas exhaust pressure drop
Ø 100 mm
Pipe 1 m Pa 0,9 1,9 3,0 7,1
Elbow 90° Pa 1,4 3,1 4,9 12,3
Tee Pa 2,8 5,7 9,0 21,2
Air intake pressure drop
Ø 100 mm
Pipe 1 m Pa 0,3 0,7 1,0 2,4
Elbow 90° Pa 0,5 1,2 2,0 4,9
Tee Pa 1,0 2,0 3,1 7,3
Table 3.14
Data for the calculation of the air/fumes system with coaxial pipes available as optional
G30 G45 G60 G100
Coaxial exhaust pipe pressure drop
Ø 80/125 mm
wall Pa 21,2 40,3 60,8 132,4
roof Pa 23,8 50,5 -
Ø 130/180
mm
wall (1) Pa 14,0 22,4 31,2 60,8
Ø 100/150
mm
roof Pa 9,7 21,3 35,3 90,5
Ø 130/210
mm
roof Pa 3,6 7,8 12,7 31,6
(1) Can be used only with OSTF009 support bracket
In the case of horizontal flue gas exhaust pipes in-
stallations, the following instructions must be ob-
served:
„
Length of the flue pipe < 1 m: install the flue pipe
with a counter slope of 2 or 3 cm towards the gas
unit heater (Figure 3.7 p. 22).
„
Length of the flue pipe > 1,5 m: the condensate
produced by the exhaust duct must be properly
collected and drained by a suitable discharge sys-
tem, in accordance with the applicable regulations
in force.
If vertical flue gas exhaust pipes longer than 1,5 m
are installed, at the base of the vertically mounted
flue gas exhaust pipe a T-shaped piece must be
fitted to collect the condensate, to prevent any
condensate drops from entering the gas unit
heater (Figure 3.2 p. 19).
For each 45° elbow an increment of 1,2 m in length
should be added.