Ducted Combustion Air Intake Applications - Riello F20 Installation, Use And Maintenance Instructions

DUCTED COMBUSTION AIR INTAKE APPLICATIONS

The "Ducted combustion air intake kit" (see P.N. 3002762 in the spare parts list - OPTIONAL), allows ducting of exter-
nal air directly into the burner. A 4" diameter air intake is provided in the kit.
To mount this kit on the burner, please follow the installation description given in the kit instruction sheet.
Use a 4" to 6" pipe adapter (not supplied in the kit) to use a 6" diameter pipe.
The settings of the burner must be according to the BURNER SETUP CHART – AIR INTAKE APPLICATIONS below.
Actual
firing Nozzle
pressure
rate size
GPH
3.50 2.50 x 45°/60°
4.00 3.00 x 45°/60°
4.65 3.50 x 45°/60°
5.16 4.00 x 45°/60°
Actual
firing Nozzle
pressure
rate size
GPH
3.50 2.50 x 45°/60°
4.00 3.00 x 45°/60°
4.65 3.50 x 45°/60°
5.30 4.00 x 45°/60°
6.00 4.50 x 45°/60°
NOZZLES RECCOMANDED:
Monarch R-PLP, Delavan W-B, Danfoss S-B, Steinen SS-S, Hago P.
NOTE:
A 45° degree nozzle is suggested, however, a 60° degree nozzle may be used in cases where the flame is
unstable at light-off when operated at low ambient temperatures.
NOTES:
A) This kit is not suitable for direct vent applications.
B) Always try to minimize the length of the air intake pipe.
C) Reduce pipe length by 10 feet for every 90° elbow, 5 feet for every 45° elbow.
D) Reduce pipe length by 6 feet for the 4" to 6" pipe adapter (if used).
E) Air intake venting should be insulated 10 feet from air intake source with a minimum R7 foil lined insulation, to prevent
condensation or corrosion of air intake venting.
F) Use an approved type of air intake vacuum breaker and install it in the same room of the burner.
This device should be tested to prove that the vacuum breaker balancer is set correctly and, in the event of intake air
source being blocked, can provide enough combustion air for the burner. If the room where the burner is installed
cannot provide enough air or air quality is a concern, an additional air inlet source must be provided to this room.
G) On the outside of the wall, use an approved intake air hood, located above the snow line and in such way as to prevent
leaves and/or other debris from blocking the air flow. Refer to local codes for proper location of inlet.
2902453
MODEL F20 BURNER SETUP CHART with 4" diameter pipe
20 Ft.
Pump
pipe length
Head
setting Air setting
PSI
Low fire Main flame Low fire Main flame Low fire Main flame Low fire Main flame
195 0.5 2.3
177 2.0 2.4
176 3.5 2.9
160 5.0 3.1
MODEL F20 BURNER SETUP CHART with 6" diameter pipe
20 Ft.
Pump
pipe length
Head
setting Air setting
PSI
Low fire Main flame Low fire Main flame Low fire Main flame Low fire Main flame
195 0.5 2.1
177 2.0 2.2
176 3.5 2.7
160 4.5 3.0
177 5.0 3.0
50 Ft.
pipe length
Air setting
2.9 2.3 2.9
3.1 2.4 3.3
3.9 3.0 4.2
4.8 3.2 5.0
50 Ft.
pipe length
Air setting
2.8 2.1 2.8
3.0 2.2 3.0
3.4 2.7 3.5
3.8 3.0 4.0
5.3 3.3 5.4
11
80 Ft. 100 Ft.
pipe length pipe length
Air setting Air setting
2.3 3..0 2.5
2.4 3.5 2.6
3.0 4.5 3.5
3.3 5.0 3.8
80 Ft. 100 Ft.
pipe length pipe length
Air setting Air setting
2.1 2.9 2.1
2.3 3.1 2.3
2.9 3.8 3.1
3.0 4.1 3.1
3.3 5.4 3.5
GB
3.0
3.8
5.0
5.8
2.9
3.1
4.5
4.5
5.7