QUADRA GREEN C.S.I.
6
5. Activate a DHW request as follows:
open a tap, for 30 seconds every minute so that the three-way valve
switches from heating to domestic hot water and vice versa about ten
times. In this situation, the boiler will go into alarm mode due to the
absence of gas, so it must be reset every time this happens.
6.
Carry on with the sequence until only water leaks out of the manual air
vent valve, and the air flow has stopped. Close the manual air vent valve.
7. Check the system pressure level is correct (the ideal level is 1 bar).
8. Turn off the system filling tap.
9.
Turn on the gas tap and ignite the boiler.
3.12 Flue gas discharge and air suction
Observe local legislation regarding flue gas discharge.
Flue gases are discharged from a centrifugal fan located inside the combus-
tion chamber and the control board constantly checks that this is working
correctly. The boiler is supplied without the flue gas discharge/air suction kit,
since it is possible to use the accessories for appliance with a forced draught
sealed chamber that better adapts to the installation characteristics.
For flue
gas extraction and the restoration of boiler combustion air, it is essential to
only use certified piping. Connection must be carried out correctly as indicated
in the instructions supplied as standard with the flue gas
accessories.
Multiple appliances can be connected to a single smoke pipe provided that
each is a sealed chamber-type appliance. The boiler is a Type
C
appliance
(sealed chamber), and must therefore have a safe connection to the flue
gas discharge pipe and to the combustion air suction pipe; these both carry
their contents outside, and are essential for the operation of the appliance.
The maximum lengths of the ducts refer to flue systems available in
the catalogue.
POSSIBLE OUTLET CONFIGURATIONS (
fig. 24)
B23P/B53P
Suction indoors and discharge outdoors
C13-C13x
Discharge via concentric wall outlet. The pipes may leave the
boiler independently, but the outlets must be concentric or suffi
-
ciently close together to be subjected to similar wind conditions
(within 50 cm).
C23
Discharge via concentric outlet in common smoke pipe (suction
and discharge in the same pipe).
C33-C33x
Discharge via concentric roof outlet. Outlets as for C13.
C43-C43x
Discharge and suction in common separate smoke pipes, but
subjected to similar wind conditions.
C53-C53x
Separate discharge and suction lines on wall or roof and in ar-
eas with different pressures. The discharge and suction lines
must never be positioned on opposite walls.
C63-C63x
Discharge and suction lines using pipes marketed and certified
separately (1856/1).
C83-C83x
Discharge via single or common smoke pipe and wall suction line.
C93-C93x
Discharge on roof (similar to C33) and air suction from a single
existing smoke pipe.
“FORCED OPEN”
INSTALLATION (TYPE B23P/B53P)
Flue gas discharge pipe ø 80 mm (fig. 20)
The flue gas discharge pipe can be directed to the most suitable direction
according to installation requirements. For installation, follow the instruc-
tions supplied with the kit. In this configuration, the boiler is connected to
the flue gas discharge pipe (ø 80 mm) through an adaptor (ø 60-80 mm).
In this case, the combustion air is picked up from the boiler instal-
lation room (which must be a suitable technical room with proper
ventilation).
Uninsulated flue discharge outlet pipes are potential sources of
danger.
Arrange the flue gas discharge pipe so it slopes by 3° towards the
boiler.
The boiler automatically adapts the purging to the type of installation
and the length of the pipe.
maximum length* of the flue gas
discharge pipe ø 80 mm
pressure drop
45° bend
90° bend
25 C.S.I.
70 m
1 m
1,5 m
30 C.S.I.
65 m
1 m
1,5 m
* “maximum length” means without bends, drainage terminals or joints.
“SEALED” INSTALLATION (TYPE C)
The boiler must be connected to concentric or twin flue gas discharge pipes
and air suction pipes, both leading outdoors. The boiler must not be oper-
ated without them.
Concentric pipes (ø 60-100 mm) (fig.21)
The concentric pipes can be placed in the most suitable direction according
to installation requirements, complying with the maximum lengths indicated
in the table.
Arrange the flue gas discharge pipe so it slopes by 3° towards the
boiler.
Non-insulated outlet pipes are potential sources of danger.
The boiler automatically adapts the purging to the type of installation
and the length of the pipe.
Do not obstruct or choke the combustion air suction pipe in any way.
For installation, follow the instructions supplied with the kit.
Horizontal
straight length *
concentric pipe
ø 60-100
mm
pressure drop
45° bend
90° bend
25 C.S.I.
5,85 m
1,3 m
1,6 m
30 C.S.I.
4,85 m
1,3 m
1,6 m
* “Straight length” means without bends, drainage terminals or joints.
Vertical
straight length *
concentric pipe
ø 60-100
mm
pressure drop
45° bend
90° bend
25 C.S.I.
6,85 m
1,3 m
1,6 m
30 C.S.I.
5,85 m
1,3 m
1,6 m
* “Straight length” means without bends, drainage terminals or joints.
Concentric pipes (ø 80-125)
For this configuration, the special adaptor kit must be fitted. The concentric
pipes can face in the direction most suitable for installation requirements.
For installation, follow the instructions supplied with the specific condensing
boilers kits.
straight length *
concentric pipe
ø 80-125
mm
pressure drop
45° bend
90° bend
25 C.S.I.
15,3 m
1 m
1,5 m
30 C.S.I.
12,8 m
1 m
1,5 m
* “Straight length” means without bends, drainage terminals or joints.
Twin pipes (ø 80 mm) (fig. 22-23)
The twin pipes can face in the direction most suited to the installation re-
quirements. For installation, follow the instructions supplied with the spe-
cific accessory kit for condensing boilers.
To use the combustion air suction pipe, one of the two inlets (
A
and
B
) must
be selected. Remove the closure plug which is fixed using screws, and use
the specific adaptor relating to the inlet selected (
C
air inlet adaptor ø 80 -
D
air inlet adaptor from ø 60 to ø 80) available as an accessory.
Arrange the flue gas discharge pipe so it slopes by 3° towards the
boiler.
The boiler automatically adapts the purging to the type of installation
and the length of the pipes. Do not obstruct or choke the pipes in
any way.
Refer to the graphs to find the maximum lengths of the single pipe.
The use of longer pipes reduces the boiler output.
maximum straight length *
twin
pipes ø 80
mm
pressure drop
45° bend
90° bend
25 C.S.I.
45+45 m
1 m
1,5 m
30 C.S.I.
40+40 m
1 m
1,5 m
* “maximum straight length” means without bends, drainage terminals or joints.
