5
a
Never pull, disconnect, or twist the electrical cables
coming from the appliance even if it is disconnected
from the mains electricity supply.
a
It is prohibited to cover or reduce the size of the ven-
tilation openings in the room where the boiler is in-
stalled.
a
Do not expose the boiler to the elements. It is de-
signed to work indoors.
a
Do not store containers of flammable substances in
the room where the boiler is installed.
a
Do not dispose of packaging material into the envi-
ronment, or leave it within the reach of children, since
it can become a potential hazard. Dispose of packag-
ing material in compliance with applicable legislation.
a
It is forbidden to obstruct the condensate outlet.
2 DESCRIPTION OF THE
APPLIANCE
2 1 Description of the appliance
VERVE i
is a wall-mounted, high-power, heating-only con-
densing boiler that's capable of operating under various
conditions:
SCENARIO A
Heating only. The boiler does not supply domestic hot
water.
SCENARIO B
Heating only, with the connection of an external storage
tank (managed by a thermostat) for domestic hot water
preparation (factory configuration).
SCENARIO C
Heating only, with the connection of an external storage
tank (accessory kit available upon request) managed
by a temperature probe, for domestic hot water prepa-
ration. When connecting the storage tank (not supplied),
check the NTC probe has the following characteristics:
10 kOhm at 25°C, B 3435 ±1%.
Based on the selected installation type, it is recommend-
ed to refer to the operations for selecting the domestic hot
water operating mode described in section "Domestic hot
water temperature setting".
This appliance's electrical and water systems can be con-
nected to a remote storage tank; in this case, the quantity
of domestic hot water will depend not only on the boiler
output but also on the storage tank capacity. This type of
unit can be installed inside a suitable room (boiler room).
Depending on the flue gas discharge accessory used, it
is classified in the following categories: B23P; C13, C13x;
C33, C33x; C43, C43x; C53, C53x; C63, C63x; C83, C83x.
In B23P configuration, the unit cannot be installed in bed-
rooms, bathrooms, shower rooms, or any rooms containing
open chimneys without their own air intake vents.
The room where the boiler is installed must have proper
ventilation.
Detailed regulations for the installation of the flue, gas pip-
ing and ventilation ducting are given in Standards UNI-CIG
7129-7131 and UNI 11071.
The main
technical characteristics
of the appliance are:
- low-emission premix burner
- microprocessor card to control inputs, outputs and
alarm management
- continuous electronic flame modulation in heating
mode
- electronic ignition with flame ionisation control
- direct current fan controlled by a Hall-effect revolu-
tions counter
- built-in gas pressure stabiliser
- NTC probe to control delivery temperature of the pri-
mary circuit
- NTC probe to control return temperature of the pri-
mary circuit
- device for automatic air separation and purging
- 3-way valve with electric actuator (optional)
- NTC probe for monitoring the flue gas discharge tem-
perature
- hydrometer to visualise heating water pressure
- circulator anti-blocking device
- airtight combustion chamber
- electrically operated gas valve with dual shutter to
command the burner
- external thermoregulation probe (optional)
- variable speed circulator (PWM= Pulse-Width Mod-
ulation)
- possibility of managing the direct zone and mixed
zone downstream of the water separator with a stand-
ard device installed inside the boiler.
The appliance's
safety devices
consist of:
- a water limit thermostat, to check for any overheating
of the appliance and thereby ensure the 100% safety
of the system. To restore functionality in the event of a
thermostat intervention, simply press the reset button
on the boiler's control panel
- flue gas probe: this intervenes (putting the boiler in
safety stop mode) if the temperature of the combus-
tion products exceeds the maximum operating tem-
perature of the discharge pipes
- 3,5 bar safety valve
- a microprocessor check of probe continuity, with any
faults indicated on the display
- a syphon with float, for discharging the condensate
and preventing the leakage of flue gases
- anti-freeze function
- diagnosis for absence of circulation (via the display
of the temperatures read by the delivery and return
probes)
- a differential pressure switch that allows the burner to
ignite if a minimum level of water circulation is guar-
anteed in the primary circuit heat exchanger
- low water conditions detected via the pressure sen-
sor
- a flue gas safety evacuation system incorporated in
the pneumatic operation of the gas valve
- overheating diagnoses performed on both the deliv-
ery and return lines, with a dual probe
- fan monitoring performed via a Hall-effect revolutions
counter: the fan's rotation speed is constantly moni-
tored.
