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7 - ASSEMBLY OF ACCESSORIES DELIVERED WITH THE BOILER
Fig. 21
D
B
A
7.1 - Bleed + bend
- Install the bend (A) on the weld for bleed connec-
tion - 3/4" section, boiler side,
- Install the bleed (B) on the 3/8" section of the
bend (A).
8 - HYDRAULIC CONNECTION
Water circuit connections are made in the back of
the unit on the four 1" branch connections - use the
four bends provided (refer to section 7 - page 25).
Model FCX can be connected to various comfort
heating water systems as well as to a domestic hot
water heating system if desired.
8.1 - Recommendations
When the boiler is assembled on an old
!
installation make sure the installation is
rinsed with fresh water, so as to clear
any sediment stagnating in areas where
the flow is slow.
To prevent circulation noises in an ins-
tallation
featuring
controls,
the
mended:
- Do not fit all the radiators with tempe-
rature controls,
- Fit a differential valve,
C
temperature
following
is
recom-
7.2 - 1" - Ø 22 bends + seal
- Fit the 4 bends (C) and the related seals (D) on
the boiler outlet/return tubes.
Fig. 22
B
A
In accordance with the installation stan-
!
dards, a filling system must be fitted on
the installation.
Never place an isolation valve between
the safety control box and the hot water
tank (FCX + domestic hot water tank)
and never between the boiler shell and
the expansion vessel.
The boiler should be positioned so that
the connection of the combustion pro-
ducts outlet system is possible with
respect to the heating outlet/return
pipes (section 5.1 - page 15 - chapter V
- INSTALLATION).
- 25 -
INSTALLATION
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