Separate Ducts - De Dietrich MPX 24 COMPACT Notice D'emploi Et D'installation

10.1.1 C43P EXHAUST TYPE
Collective positive pressure flue pipe for sealed chamber boilers
This type of installation is only possible with natural gas
boilers (G20)
In order to connect the boiler to a C43P collective flue pipe, the non-
return valve is required.
The sizing of the flue pipe is defined by the conduit supplier in
accordance with EN 13384-2.
1 90° elbow Ø 80/125 mm
2 Conduit Ø 80/125 mm
3 Non-return valve Ø 80 mm
4 Adaptor Ø 60/100 -> 80/125 mm
For this type of installation, it is necessary to modify the P71 and P72
parameters in the electronic card as shown in the table (also see the
SERVICE instructions).
After changing the parameters, the boiler must be calibrated as
described in the SERVICE manual.
Model
MPX 24 - MPX 20/24 MI
MPX 24/28 MI
MPX 28/33 MI

10.2 SEPARATE DUCTS

For special installations of the fumes inlet/outlet ducts, the
single splitting kit (C), supplied as an accessory, can be used.
This accessory, in fact, can be used to move the inlet and outlet
in any direction. This type of installation makes it possible to
discharge exhaust fumes both outside the building and into
single flue ducts. Comburent air can be drawn in at a different
location from that of the flue terminal. The splitting kit is fixed
to the boiler turret (100/60 mm) and allows the comburent air
and outlet fumes to enter/leave the two separate ducts (80
mm). For further information, read the assembly instructions
supplied with the accessory.
The 90° bend is used to connect the boiler to the inlet and
outlet ducts, adapting them to various requirements. It can
also be used as a supplementary curve combined with a duct or a 45° bend.
• A 90° bend reduces the total duct length by 0.5 metres.
• A 45° bend reduces the total duct length by 0.25 metres.
• The first 90° bend is not included when calculating the maximum available length.
SOME OUTLET DUCT INSTALLATION EXAMPLES AND THEIR RELATIVE MAXIMUM LENGTHS ARE SHOWN IN ANNEX
"SECTION" D AT THE END OF THIS MANUAL.
7679433.01 (1-04/17)
P72
Qmin - Pressure at the chimney 25 Pa
85
85
85
P71
Qmax - Pressure at the chimney 86 Pa
130
185
180
10