Cranborne THI 10-50c, Installation, Commissioning And Servicing Instructions

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INSTALLATION
3 - COMBUSTION PRODUCT FLUEING
The combustion product outlet sys-
tems described in this manual are sys-
tems normally used on the European
market. However, some of them cannot
be used in all the countries of the EEC.
The installer or client must ensure that
the flue system chosen complies with
local installation regulations.
- The THI boiler operates by condensation, which
involves the use of a sealed drain outlet. The
combustion products are saturated with water va-
pour and continue to condense onto the walls of
the lining. The condensates must therefore be
collected at the base of the conduit and directed
to the drain. The condensates are acids (PH4), so
the use of a stainless steel conduit is recommen-
ded.
- Systematically check that the condition and the
cross-sectional area of the flue are correctly
adopted to open flued combustion product ex-
traction. If they are defective, carry out repairs or
tubing in accordance with the installation stan-
dard.
- If the boiler is installed in premises that have me-
chanical air extraction, check regularly that this
does not cause negative pressure.
- The conventional flue connection must be instal-
led by retaining an upwards slope towards the
flue (2% minimum). Use a rigid flue that has a
smaller diameter than that of the boiler.
3.1 - Conventional flue outlets (B
23
model)
!
PVC 25
Æ
050-14-3
Tubing ventilation
Sealed tubing
Traps
(these 2 drains may
be shared)
Boiler
Ventilation
Alu réduction
139/80
Æ
Boiler connection
Sealed flue
139 Æ
Trap, accessible for
inspection minimum seal
depth 50 mm (for draining
condensates from tubing)
PVC 32
Æ
Fig. 15