Atag Q 25S - Flue Gas Exhaust System and Air Supply System

Installation & Servicing Instructions ATAG Q-Series
18
The boiler can be tted with a parallel connected ue gas outlet and air supply system
or a concentric ue gas outlet and air supply system.
The appliance connection diameter is 80/125 mm, to which the ue gas outlet and air
supply system can be tted, with or without elbow pieces. The next page descibes the
conversion from concentric to parallal.
The Q51S and Q60S boiler has a connection of 2x 80mm from factory. The boiler is
supplied with a ue adapter 80/25 mm to convert the boiler from parallel to a concentric
connection.
The maximum permissible pipe length is set out in Table 6.8.1.a.
Open boiler
Room sealed system
SS
P
SS
P
P
SS
P
Open ued en room sealed system gure 6.8.a
P
P/A P/A P/A
All ue gas parts, which are outside the re
resistant cover, need to be in stainless steel.
Boiler Class C
Permitted only
when the air
intake and the ue gas
outlet are in the same
pressure area.
BoilerClass B
Free exhaust area
Air lter