Control Panel; Installation - Ferroli Prextherm N serie Installations, Bedienungs Und Wartungsanleitungen

PREXTHERM N
1. OPERATING INSTRUCTIONS

1.1 Control panel

1
1.2 Ignition
Move the main switch 5 to position "I" to power the boiler and the burner. Refer to the burner manual for the operation of this device.
1.3 Setting
Set the desired system temperature using the control thermostat 4. If the thermoregulation control unit (optional) is connected, refer to the
corresponding instruction manual. The thermal head between the boiler outlet and return must not exceed 20°C. This limit must be maintained
both during normal operation and in the start-up phase. Higher thermal heads may cause serious problems to the structure of the boiler.
1.4 Shut-down
To shut the boiler down, move the switch 5 (Fig. 1) on the control panel to position "0" and close the fuel on-off valve.
Danger of frost: the best safeguard in very cold periods is to operate the boiler and the utilities, so that the entire system is running. Alternatively,
add special antifreeze to the system, in the proportions indicated by the supplier, based on the minimum hypothesised ambient temperature.
1.5 Anomalies
Two lockout conditions may occur that can be reset by the user:
a - Burner lockout signalled by the corresponding light 6 (Fig. 1). Refer to the burner manual.
b - Activation of the safety thermostat when the temperature in the boiler reaches the limit value above which a dangerous situation may arise.
To reset operation, unscrew cap 3 and press the reset button.
If the problem occurs again, contact qualified personnel or the service centre.
In the event of faults and/or poor operation of the appliance, it should be deactivated. Do not attempt to repair the appliance. Contact professionally
qualified and authorised personnel only.

2. INSTALLATION

General instructions
This appliance must only be used for the purposes it has been specifically designed for. This appliance is used to heat water to below-boiling
temperatures at atmospheric pressure, and must be connected to a heating and/or domestic hot water distribution system, according to its
characteristics, performance and heating capacity. All other uses are considered improper.
THE BOILER MUST ONLY BE INSTALLED BY QUALIFIED AND SPECIALIST PERSONNEL, IN COMPLETE COMPLIANCE WITH ALL THE
INSTRUCTIONS REPORTED IN THIS TECHNICAL MANUAL, THE LEGAL STANDARDS IN FORCE, THE PRESCRIPTIONS OF ANY
NATIONAL AND LOCAL STANDARDS, AND ACCORDING TO THE RULES OF GOOD PRACTICE.
Incorrect installation may cause damage to people, animals and things. The manufacturer will not be held liable in such events.
Place of installation
The room in which the boiler is installed must have ventilation openings to the outside according to the standards in force. If the same room
features a series of burners or exhaust devices that can operate at the same time, the ventilation openings must be large enough for the
simultaneous operation of all the appliances.
The place of installation must be free of flammable objects or materials, corrosive gas, dust or volatile substances that, sucked in by the
burner's fan, may block the internal tubing of the burner or the combustion head. The environment must be dry and not exposed to rain, snow
or frost.
Positioning the boiler
The minimum spaces shown in the figure must be complied with. Specifically, make sure that after
assembling the boiler with the burner on the front door, the latter can be opened without the burner
hitting against the wall or any other boiler. Leave a free space of at least 100mm on the side that the door
swings towards.
In normal conditions, the boiler can rest directly on the floor, being already fitted with its own base made
from metal section bars. Only if the room is very damp should an additional 8 - 10 cm concrete base be
put in.
2 3 4 5
fig. 1
Key
1 Ready for electronic control unit
2 Thermohydrometer
3 Safety thermostat
4 Control thermostat, 2 Stages
5 "0 - I - TEST" boiler switch
6 Burner lockout indicator light
7 Burner (not supplied or supplied separately)
fig. 2
7
6
100
mm
Bruciatore
Burner
3