andrews SUPAflo EVO SF60 EVO, Инструкция по установке и обслуживанию

Страница: 20 / 48

Installation
20
Combustion air
drawn from the
room
B23 External flue gas exhaust. Air drawn from the room
Combustion
air intake from
cascade
C63
Air and exhaust connection to separate tested and supplied air /
exhaust pipes.
Basement / floor installation.
Air and exhaust venting via exterior wall.
Exhaust venting through heat insulated exhaust pipe or moistu -
re-resistant pipe.
Exhaust line (standing air layer) at exterior wall.
The terminals for the supply of combustion air and for the eva -
cuation of combustion products shall not be installed on opposi -
te walls of the building.
Dimensioning single
Dimensioning
When dimensioning a flue gas sys -
tem, it’s necessary to perform a cal -
culation check of the flue gas sys -
tem in order to verify if the choosen
system is applicable.
The following table shows two ex -
amples of possible flue gas systems,
including the maximum possible
length of the system.
These examples only give an indica -
tion of the possible length, but they
can not be used for official flue gas
layout calculation. Each flue gas sys -
tem must be calculated by an au -
thorized company.
The maximum negative flue gas
pressure, which doesn’t affect the
burner modulation ratio, is 30 Pa.
Higher negative pressure will lead to
limitation of the burner modulation
ratio.
The maximum horizontal flue gas
way is 20 m. With horizontal ways
longer than 20 m, a faultless burner
start in cold condition can not be
guaranteed.
Calculation base:
Total connection length in boiler room ≤ 1.5 m; 2x
87°-bend
Maximum permissible lenght (m) of flue gas system
Boiler Type Ø130 Ø 150 Ø200 Ø 250 Ø300
SF61 50 50 50
SF62 40 50 50
SF6 3 46 50 50
SF64 22 50 50
SF65 50 50 50
SF66
50 50 50
SF67
50 50 50
Max length reduction
•
90°/87° bend: -2,5 meters
•
45°/43° bend: -1,5 meters
Flue gas system