Installation, user and maintenance manual
– AY Condensing line, AY series
37
To install the appliance in a type C configuration, you must purchase an optional type
C conversion kit (see Section 7 ACCESSORIES
→
75), made by Centrotherm, and refer
to the following technical data table for the sizing of the combustion fumes outlet and
combustion air intake pipes.
Table 4�4 – Ducting for fumes evacuation and air intake pipes (type C)
Technical characteristic
unit of
measure G20
G30
G31
GPL
Useful residual head
Pa
120
120
120
120
Mass of fumes at nominal thermal capacity
kg/h
55.0
49.0
56.0
49.0
Mass of fumes at minimal thermal capacity
kg/h
13.0
12.0
13.0
12.0
Temperature of fumes at nominal thermal capacity °C
72.5
71.5
72.5
71.5
Temperature of fumes at minimal thermal capacity °C
71.6
71.5
71.5
71.5
CO
2
content at nominal thermal capacity
%
9.4
12,4
10.6
12,4
CO
2
content at minimal thermal capacity
%
8.9
11,5
10.2
11,5
Data for sizing type C air/fumes installation pipes.
Examples of the two principal type C configurations:
C13 - using a concentric DN60/100 90°C curve, the maximum permitted exten-
•
sion with concentric DN60/100 straight pipe sections is 5.75 m, while the mini-
mum permitted extensions is 0.75 m.
C33 - the maximum permitted extension with concentric DN60/100 straight pi-
•
pe sections is 6.25 m.
Exhaust pipes exposed to atmospheric agents must be made of black polypropylene
or an equivalent weather resistant material. For sizing, refer to the established regula-
tions and the manufacturer’s instructions.
The following table gives a brief description of the possible installation
configurations.
Table 4�5 – Installation configuration (types B and C)
TYPE
CONFIGURATION
B23P
The combustion products are exhausted outside, from the wall or roof, while the combustion
air is drawn directly from the room in which the appliance is installed. This configuration can
ONLY be installed in open areas or areas sufficiently well ventilated and free of combustible
powders.
B33
Evacuation of combusted gas into the flue, combustion air drawn directly from the room in
which the appliance is installed. This configuration can ONLY be installed in open areas or
areas sufficiently well ventilated and free of combustible powders.
B53P
Boiler designed for connection, via its own pipe, to a dedicated combustion product
evacuation terminal. The air is drawn from the installation room and the combustion products
are evacuated outside the room. This configuration can ONLY be installed in open areas or
areas sufficiently well ventilated and free of combustible powders.
C13
Type C boiler connected, via its own pipes, to a terminal installed horizontally on the wall or
roof. The outlets of the pipes are concentric or sufficiently close to each other to be exposed to
analogous wind conditions.
C33
Type C boiler connected, with its pipes, to a vertical terminal. The outlets of the pipes are
concentric or sufficiently close to each other to be exposed to analogous wind conditions.
C43
Type C boiler connected, via its pipes and optionally with a fitting, to a collective piping system
composed of a pipe for combustion air supply and a pipe for combustion product evacuation.
The outlets of the system of collective pipes are concentric or sufficiently close to each other to
be exposed to analogous wind conditions.
C53
Type C boiler connected, via its separate pipes, to two terminals which can be installed in
zones at different pressures.
C63
Type C boiler designed for connection to a system for combustion air supply and combustion
product evacuation which is approved and sold separately.
