MPI Technologies FCX Benutzerhandbuch



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Connection of the coaxial flue/combustion air piping
system is in the back of the unit to the separator
tube assembly. The combustion products are ven-
ted from the boiler and condenser through the cen-
ter of the coaxial tube, while the combustion air is
supplied through the outside ring of the coaxial tube.
Since Model FCX is a condensing boiler, flue pro-
ducts exiting the unit are relatively low temperature,
from 140 - 185 deg. F (60 - 85 deg C), and saturated
with humidity. Consequently, an airtight, corrosion
resistant flue system must be provided. 

Various standard option flue piping components and
packages with which to create the flue system are
available.

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Useful length under sleeve tile - 16.9 inches
(0.43 m)

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- joint fitting - 

Useful length after assy. - 17.7 inches (0.45 m) or
37.4 inches (0.95 m)

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N40.28399

38.6 inches

(980 mm)

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V72.28414

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2'

N40.28393

Tile

42.5 inches 

(1080mm)

3.15 inch 

(80mm) 

4.92 inch 
(125mm) 

N40.28394 Black

42.5 inches 

(1080mm)

3.15 inch 

(80mm) 

4.92 inch 
(125mm) 

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2'

N40.28397

19.7 inches

(500 mm)

3.15 inch 

(80mm) 

4.92 inch 

(125mm) 

N40.28398

39.4 inches

(1000 mm)

3.15 inch 

(80mm) 

4.92 inch 

(125mm)