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In particular on the boiler display:
- it is no longer possible to set the boiler OFF/WINTER/SUMMER status (it is set by the
OTBus remote control)
- it is no longer possible to set the domestic hot water setpoint (it is set by the OTBus
remote control)
- it is not possible to activate the CHIMNEY SWEEPER function if a OTBus remote control
is connected to the boiler.
In addition
- The domestic hot water setpoint is displayed in the INFO menu in the place of the flow
meter flow rate value.
- The heating setpoint set on the boiler display is used only if there are heat requests from
the TA and the OTBus remote control does not have a request if the parameter DO_AUX1
= 1 or DO_AUX1 = 0 and the jumper on 1-2 pin of X21 is closed. We should point out that
it is not possible, with the OTBus remote control connected, to change the values of the
parameters ACTUATION TYPE and REQUEST TYPE of the main zone.
b
The OpenTherm connection is not enabled in the presence of a heat pump.
Note: an OT+ remote control cannot be connected if the system already has a
REC10CH or BE16 interface boards. in this case the system gives the following error
message:
WRONG CONFIGURATION
OPENTHERM CONNECTED
High voltage connections
The connection to the mains supply must be made via a separation device with an omnipolar
opening of at least 3.5 mm (EN 60335/1 - category 3). The appliance works with alternating
current at 230 Volt/50 Hz, and is in compliance with Standard EN 60335-1. It is obligatory to
make the connection with a safe ground/earth, in compliance with current directives.
b
The installer is responsible for ensuring the appliance is suitably earthed; the
manufacturer will not be liable for any damage resulting from an incorrect or absent
earth connection.
b
It is also advisable to respect the phase-neutral connection (L-N).
b
The earth conductor must be a couple of cm longer than the others.
b
To create the seal of the boiler use a clamp and tighten it on the cable grommet used.
The boiler can operate with a phase-neutral or phase-phase power supply.
It is forbidden to use gas and/or water pipes to earth electrical appliances.
Use the power cable supplied to connect the boiler to the mains power supply. If the power
cable has to be replaced, use a HAR H05V2V2-F, 3 x 0.75mm² cable, Ø max external 7 mm.
2.5
Gas connection
The connection of the gas supply must be carried out in compliance with current installation
standards. Before carrying out the connection, check that the type of gas is that for which
the appliance is set up.
2.6
Removing the casing
To access the components inside, remove the casing as shown in the figure.
b
If removing the side panels, put them back in their initial position, referring to the
b
adhesive label on its wall.
If the front panel is damaged it must be replaced.
b
The noise absorbing panels inside the front and side walls ensure the airtight seal for the
air supply duct in the installation environment.
b
It is therefore CRUCIAL after the dismantling operations to correctly reposition the
components to ensure the boiler's seal is effective.
2.7
Flue gas exhaust and combustion air suction
To evacuate the combustion products, refer to UNI 7129-7131. Always comply with
local standards of the Fire Department, the Gas Company and with possible municipal
C
C
B
B
A
dispositions. It is essential for the evacuation of the flue gases and the adduction of the
boiler's combustion air that only original pipes be used (except C6) and that the connection
is made correctly as shown in the instructions provided with the flue gases accessories.
A single flue can be connected to several appliances provided that every appliance is the
condensing type.
b
b
The straight length includes the first bend (connection into the boiler), terminals
and joints. An exception is made for the vertical Ø 60-100 mm coaxial pipe, whose
straight length excludes bends.
b
To ensure greater installation safety, fix the ducts to the wall (wall or ceiling) using
special fixing brackets to be positioned at each joint, at a distance such as not to
exceed the length of each individual extension and immediately before and after
each change of direction (curve).
b
The boiler is supplied without the flue gas exhaust/air suction kit, since it is possible
to use the accessories for condensing appliances that best fit the installation
characteristics (see catalogue).
b
The maximum lengths of the pipes refer to the flue accessories available in the
catalogue.
b
It is compulsory to use specific pipes.
b
The non insulated flue gas outlet pipes are potential sources of danger.
b
The use of a longer pipe causes a loss of output of the boiler.
b
The exhaust pipes can face in the direction most suited to the installation
requirements.
b
As envisaged by current legislation, the boiler is designed to take in and dispose of
flue gas condensate and/or meteoric water condensate deriving from the flue gas
discharge system using its own siphon.
b
If a condensate relaunch pump is installed, check the technical data (provided by the
manufacturer) regarding output, to ensure it operates correctly.
- Position the discharge pipe so that the connection sits fully up against the flugases turret
of the boiler.
- After positioning it, make sure the 4 notches (A) slip into the groove (B).
- Fully tighten the screws (C) that hold the two flange locking terminals, so thbend itself is
restrained held in place.
B23P-B53P
Ø60-100
B
B
A
C
b
If the Ø 60-100 to Ø 80-80 splitter kit is used instead of the twin pipe system, there
is a loss in the maximum lengths as shown in the table.
Ø50
Loss of length (m)
Twin pipes with Ø 80 pipework Ø50 - Ø60 - Ø80)
Thanks to the boiler characteristics, a Ø80 flue gas exhaust pipe can be connected to
the Ø50 - Ø60 - Ø80 piping ranges.
b
For the pipe, you are advised to make a project calculation in order to respect the
relevant regulations in force.
A
25R
105
35R
130
40R
Ø80-80
Ø80-125
B
B
B
A
C
Ø60
Ø80
5.5 for flue gases pipe
0.5
1.2
7.5 for air pipe
ENGLISH
EN
5
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