![Fondital Nias Dual BTFS 24 Скачать руководство пользователя страница 28](http://html1.mh-extra.com/html/fondital/nias-dual-btfs-24/nias-dual-btfs-24_installation-use-and-maintenance-manual_2315365028.webp)
28
3.2.7.4. Direct air intake and flue gas discharge with 80
mm diameter duct
B22 installation type
This type of installation requires the 0SDOPPIA06 standard
split pipe kit (fig. 14).
An 80 mm Ø female flanged pipe must be installed on the
intake, and on top of it the intake terminal with the anti-
pulse device, provided in the kit.
A standard air deflector (fig. 14) must also be installed.
Installation of the 51 mm air diaphragm depends on the
boiler model, as described below.
If the manufacturer’s standard split pipe kit is
not used, correct operation of the boiler can
not be guaranteed.
BTFS 24
Air intake
Fit onto the 80 mm Ø female flanged pipe the intake terminal
and anti-pulse device provided in the kit, which includes the
51 mm air diaphragm. Then apply the standard air deflector
(fig. 15).
Flue gas discharge
The minimum length of the flue gas discharge pipe is 0.5
metres.
Each 90° wide radius (R=D) elbow in the flue gas pipe is
equivalent to 1.5 m linear length.
Each 90° narrow radius elbow in the flue gas pipe is
equivalent to 3.5 m linear length.
Choosing the right diaphragm supplied with the boiler
BTFS 28
Air intake
Fit onto the 80 mm Ø female flanged pipe the intake terminal
and anti-pulse device provided in the kit, which includes the
51 mm air diaphragm. Then apply the standard air deflector
(fig. 15).
Flue gas discharge
The minimum length of the flue gas discharge pipe is 0.5
metres.
Each 90° wide radius (R=D) elbow in the flue gas pipe is
equivalent to 2 m linear length.
Each 90° narrow radius (R=D) elbow in the flue gas pipe is
equivalent to 4 m linear length.
Choosing the right diaphragm supplied with the boiler
BTFS 32
Air intake
Fit onto the 80 mm female flanged pipe the intake terminal
and anti-pulse device provided in the kit. Then apply the
standard air deflector (fig. 15).
Do NOT install the Ø 51 air intake diaphragm.
Flue gas discharge
The minimum length of the flue gas discharge pipe is 0.5
metres.
Each 90° wide radius (R=D) elbow in the flue gas pipe is
equivalent to 2 m linear length.
Each 90° narrow radius (R=D) elbow in the flue gas pipe is
equivalent to 5 m linear length.
Choosing the right diaphragm supplied with the boiler
450
75
0
96
120
60 mm
534
376
306
DIMENSIONS FOR CONNECTING THE FLUE GAS PIPE
TO SEPARATE DUCTS
fig. 15
Pipe length
(m)
Diameter of the flue gas
diaphragm (mm)
05 ≤ L ≤ 8
Ø 45
8 < L ≤ 14
Ø 49
14 < L ≤ 19
No diaphragm required
Pipe length
(m)
Diameter of the flue gas
diaphragm (mm)
0.5 ≤ L ≤ 9.5
Ø 49
9.5 < L ≤ 15.5
No diaphragm required
Pipe length
(m)
Diameter of the flue gas
diaphragm (mm)
0.5 ≤ L ≤ 5.5
Ø 51
5.5 < L ≤ 10.5
No diaphragm required