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1. GENERAL WARNINGS
•
Carefully read and follow the instructions contained in this instruction booklet.
•
After boiler installation, inform the user regarding its operation and give him this
manual, which is an integral and essential part of the product and must be kept with
care for future reference.
•
Installation and maintenance must be carried out by professionally qualified person-
nel, in compliance with the current regulations and according to the manufacturer's
instructions. Do not carry out any operation on the sealed control parts.
•
Incorrect installation or inadequate maintenance can result in damage or injury. The
Manufacturer declines any liability for damage due to errors in installation and use,
or failure to follow the instructions.
•
Before carrying out any cleaning or maintenance operation, disconnect the unit from
the electrical power supply using the switch and/or the special cut-off devices.
•
In case of a fault and/or poor operation, deactivate the unit and do not try to repair
it or directly intervene. Contact professionally qualified personnel. Any repair/re-
placement of the products must only be carried out by qualified personnel using orig-
inal replacement parts. Failure to comply with the above could affect the safety of
the unit.
•
This unit must only be used for its intended purpose. Any other use is deemed im-
proper and therefore hazardous.
•
The packing materials are potentially hazardous and must not be left within the
reach of children.
•
The unit must not be used by people (including children) with limited physical, sen-
sory or mental abilities or without experience and knowledge of it, unless instructed
or supervised in its use by someone responsible for their safety.
•
The unit and its accessories must be appropriately disposed of, in compliance with
the current regulations.
•
The images given in this manual are a simplified representation of the product. In
this representation there may be slight and insignificant differences with respect to
the product supplied.
2. OPERATING INSTRUCTIONS
2.1 Introduction
Dear Customer,
Thank you for choosing a FERROLI boiler featuring advanced design, cutting-edge tech-
nology, high reliability and quality construction. Please read this manual carefully since
it provides important information on safe installation, use and maintenance.
PEGASUS D is a high-efficiency heat generator for domestic hot water production (op-
tional) and heating, suitable for operation with blown oil or gas burners. The boiler shell
consists of cast-iron elements, assembled with double cones and steel stays. The control
system is with microprocessor and digital interface with advanced temperature control
functions.
The boiler is arranged for connection to an external storage tank for hot
A
water production (optional). In this manual all the functions relevant to
domestic hot water production are only active with the optional hot water
tank connected as indicated in sec. 3.3
2.2 Control panel
1
2
27
25
23
22
26
24
3
4
fig. 1 - Control panel
Key
1 =
Button -
2 =
Button +
3 =
Heating system temperature setting decrease button
4 =
Heating system temperature setting increase button
5 =
Display
6 =
Summer / Winter mode selection button
7 =
Not used
8 =
Reset button
9 =
Unit On / Off button
10 =
Sliding Temperature" menu button
16 =
Outside sensor temperature (with optional outside sensor)
17 =
Appears on connecting the outside Sensor or the Remote Timer Control (optionals)
18 =
Room temperature (with optional Remote Timer Control)
19 =
Burner On
20 =
Antifreeze operation
21 =
Heating system pressure
22 =
Fault
28
19
5
16
bar
21
20
18
17
6
23 =
Heating delivery temperature / setting
24 =
Heating symbol
25 =
Heating mode
26 =
Set heating delivery temperature reached
27 =
Summer mode
2.3 Lighting and turning off
Boiler not electrically powered
B
The antifreeze system does not work when the power and/or gas to the unit are
turned off. To avoid damage caused by freezing during long idle periods in win-
ter, it is advisable to drain all water from the boiler, or add a suitable antifreeze
to the heating system, in compliance with that prescribed in sec. 3.3.
Boiler lighting
•
Open the fuel on-off valves.
•
Switch on the power to the unit.
•
For the following 120 seconds the display will show FH which identifies the heating
system air venting cycle.
•
During the first 5 seconds the display will also show the card software version.
•
When the message FH disappears, the boiler is ready to operate automatically
whenever domestic hot water is drawn or in case of a room thermostat demand.
Turning the boiler off
Press the on/off button (detail 9 - fig. 1) for 1 second.
7
9
10
When the boiler is turned off, the electronic board is still powered.
Heating operation is disabled. The antifreeze system remains activated.
To relight the boiler, press the on/off button (detail 9 - fig. 1) again for 1 second.
8
The boiler will be immediately ready to operate whenever domestic hot water is drawn
or in case of a room thermostat demand.
Shutting down the boiler for prolonged periods
To turn off the boiler:
•
Press the ON/OFF button (9 - fig. 1)
•
Close the gas cock ahead of the boiler.
•
Disconnect the power to the unit.
B
To avoid damage caused by freezing during long idle periods in winter, it is ad-
visable to drain all the water from the boiler; DHW and system. Otherwise, drain
just the DHW circuit and add a suitable antifreeze to the heating system, com-
plying with that prescribed in sec. 3.3.
cod. 3540U174 - Rev. 04 - 11/2018
PEGASUS D
fig. 2 - Boiler not electrically powered
fig. 3 - Boiler lighting
fig. 4 - Turning the boiler off
eco
bar
fig. 5
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