8
CIAO GREEN C.S.I.
Twin pipes ø 80 with ducting Ø50 - Ø60 - Ø80 (g. 24)
Thanks to the boiler characteristics, a ue gas discharge pipe ø 80 can
be connected to the ducting ranges Ø50 - Ø60 - Ø80.
b
For the ducting, you are advised to make a project calculation in order
to respect the relevant standards in force.
The table shows the standard congurations allowed.
Table of standard pipe configurations (*)
Air suction
1 bend 90° ø 80
4,5m pipe ø 80
Flue gas discharge
1 bend 90° ø 80
4,5m pipe ø 80
Reduction from ø 80 to ø50, from ø 80 to ø 60
stack base bend 90°, ø 50 or ø 60 or ø 80
For ducting pipe lengths see table
(*) Use ue gas system accessories in plastic (PP) for condensing boilers:
Ø50 and Ø80 H1 class and Ø60 P1 class.
The boilers are factory set to:
25 C.S.I.: 4.900 r.p.m. (CH) and 6.100 r.p.m. (DHW) and the maximum
length that can be reached is 7m for the ø 50 pipe, 25m for the ø 60 pipe
and 75m for the ø 80 pipe.
29 C.S.I.: 5.300 r.p.m. (CH) and 6.200 r.p.m. (DHW) and the maximum
length that can be reached is 5m for the ø60 pipe and 67m for the ø 80 pipe
(not applicable for the ø 50 pipe).
Should it be necessary to achieve greater lengths, compensate the pressure
drop with an increase in the r.p.m.of the fan, as shown in the adjustments
table, to ensure the rated heat input.
b
The minimum calibration is not modied.
Adjustments table
Maximum number
of fan rotations
r.p.m.
Ducting pipes
max length (m)
CH DHW Ø 50 (*) Ø 60 (*) Ø 80 (*)
25 C.S.I.
4.900 6.100 7 25 75
5.000 6.200 9 30 90
5.100 6.300 12 (**) 38 (**) 113 (**)
29 C.S.I.
5.300 6.200 NA 5 67
5.400 6.300 2 13 182
NA: not applicable
(*) Use fumes exhaust plastic systems (PP) for condensing boilers.
(**) Maximum installable length ONLY with exhaust pipes in H1 class.
Congurations Ø50 or Ø60 or Ø80 show test data veried in the laboratory.
In the case of installations that differ from those indicated in the “standard
conguration” and “adjustments” tables, refer to the equivalent linear
lengths below.
b
In any case, the maximum lengths declared in the booklet are
guaranteed, and it is essential not to exceed them.
COMPONENT Linear equivalent in metres Ø80 (m)
Ø 50 Ø 60
Bend 45° 12,3 5
Bend 90° 19,6 8
Extension 0.5m 6,1 2,5
Extension 1.0m 13,5 5,5
Extension 2.0m 29,5 12
3.12 Installation on collective positive pressure flues
(g. 24a - only for 25kW)
The collective flue is a flue gas exhaust system suitable for collecting
and expelling the combustion products of several appliances installed on
several floors of a building.
The positive pressure collective flues can only be used for type C condensing
appliances. Therefore the B53P/B23P configuration is forbidden. The
installation of boilers under collective pressure flues is allowed exclusively
in G20. Make sure that the air intake and exhaust pipes of the combustion
products are watertight.
WARNINGS:
b
The manufacturer does not assumes any responsibility in case of
failure to apply the check valve and its label before starting the boiler.
b
The appliances connected to a collective pipe must all be of the
same type and have equivalent combustion characteristics.
b
The number of devices connected to a positive pressure collective
pipe is defined by the flue designer.
b
The boiler is designed to be connected to a collective flue sized to
operate in conditions where the static pressure of the collective flue
pipe can exceed the static pressure of the collective air duct of 25 Pa
in the condition in which n-1 boilers work at maximum rated heat input
and 1 boiler at the minimum rated heat input allowed by the controls.
b
The minimum permissible pressure difference between the flue gas
outlet and the combustion air inlet is -200 Pa (including - 100 Pa of
wind pressure).
b
The number and characteristics of the exhaust ventilation devices which
are the real characteristics of the flue itself.
b
The terminal of the collective pipe must generate a an upward air current.
b
The condensation can flow inside the boiler.
b
The maximum recirculated value allowed in wind conditions is 10%.
b
The maximum permissible pressure difference (25 Pa) between the
combustion products inlet and the air outlet of a collective flue can not be
exceeded when-1 boiler work at the maximum nominal heat output and 1
boiler within minimum temperature allowed by the checks.
b
The collective smoke pipe must be adequate for an overpressure of at
least 200 Pa.
b
The collective flue must not be equipped with a wind-proofing device.
b
A data plate must be present at the connection point with the collective
flue pipe. The plate must include at least the following information:
- the collective flue is sized for C(10) boilers type
- the maximum permissible mass flow of the combustion products in kg/h
- the dimensions of the connection to the common pipes
- a warning concerning the openings for the air outlet and the entry
of the combustion products of the collective pressure pipe; these
openings must be closed and their tightness must be checked
when the boiler is disconnected
- the name of the manufacturer of the collective smoke pipe or its
identification symbol
.
INSTALLATION INSTRUCTIONS
This accessory must only be installed by professionally qualified
personnel.
The accessory, to be applied immediately to the boiler exhaust outlet with
the corresponding adapter, has the purpose of avoiding the back-flow of
smoke in an appliance while the other appliances connected to the flue are
operating.
b
The check valve kit can only be used for devices contemplated in this
instruction manual.
b
It is to be used only for flue gas discharge and air suction of the
condensing boilers since the maximum temperature allowed from the
component is 120 °C.
The accessory is equipped with an integrated condensate collection system
that does not require further connections to the exhaust system in addition
to what is already provided for the boiler
.
Depending on the kit requested, it is possible to connect:
• Ø80 check valve kit with integrated siphon – Ø80 PP twin pipe system
connection
• Ø80/125 check valve kit with integrated siphon – connection with
concentric pipes Ø80/125 with PP flue pipe in combination with Ø60/100
to Ø80/125 adapter
.
For both types of exhaust, further accessories are available (curves,
extensions, etc.) which make possible the flue gas exhaust configurations
foreseen in the boiler booklet
.
b
The pipes must be installed in such a way as to avoid condensation
sticking which would prevent the correct evacuation of the combustion
products.
b
The flue gas pipe must be suitably selected based on the parameters
shown below.
maximum length minimum length um
ø80
4,5 0,5 m
ø80/125
4,5 0,5 m
b
Before attempting any operation, disconnect the appliance from the
electrical supply.
b
Before assembling, lubricate the gaskets with a non-corrosive glide
lubricant.
b
The flue gases discharge pipe should be inclined, if the pipe is horizontal,
by 3° towards the boiler.