Ferroli PEGASUS D Ki 100 User manual

3540L870
cod. 3540L870 — 03/2009 (Rev. 00)
PEGASUS D Ki 100
INSTRUCTIONS FOR USE, INSTALLATION AND MAINTENANCE
NÁVOD K OBSLUZE, INSTALACI A ÚDRŽBĚ
VEJLEDNING I BRUG, INSTALLATION OG VEDLIGEHOLDELSE
HASZNÁLATI, BESZERELÉSI ÉS KARBANTARTÁSI UTASÍTÁS
INSTRUKCJA OBSłUGI, INSTALACJI I KONSERWACJI
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ, МОНТАЖУ ИТЕХОБСЛУЖИВАНИЮ

PEGASUS D Ki 100
2EN
B
Declaration of conformity
Manufacturer: FERROLI S.p.A.
Address: Via Ritonda 78/a 37047 San Bonifacio VR Italy
declares that this unit complies with the following EU directives:
• Gas Appliance Directive 90/396
• Efficiency Directive 92/42
• Low Voltage Directive 73/23 (amended by 93/68)
• Electromagnetic Compatibility Directive 89/336 (amended by 93/68)
President and Legal Representative
Cav. del Lavoro
Dante Ferroli
BThis symbol indicates "Caution" and is placed next to all safety warnings. Strictly follow
these instructions in order to avoid danger and damage to persons, animals and things.
AThis symbols calls attention to a note or important notice.
cod. 3540L870 - 03/2009 (Rev. 00)
• Carefully read the warnings in this instruction book-
let since they provide important information on safe
installation, use and maintenance.
• This instruction booklet is an integral part of the
product and must be carefully kept by the user for fu-
ture reference.
• If the unit is sold or transferred to another owner or if
it is to be moved, always make sure that the booklet
accompanies the boiler so that it can be consulted
by the new owner and/or installer.
• Installation and maintenance must be carried out by
professionally qualified personnel, according to cur-
rent regulations and the manufacturer's instructions.
• Incorrect installation or poor maintenance can cause
damage or physical injury. The manufacturer de-
clines any responsibility for damage caused by er-
rors in installation and use or by failure to follow the
manufacturer's instructions.
• Before carrying out any cleaning or maintenance op-
eration, disconnect the unit from the electrical power
supply using the switch and/or the special cut-off de-
vices.
• In case the unit breaks down and/or functions poorly,
deactivate it, do not make any attempt to repair it or
directly intervene. Contact professionally qualified
personnel. Any repair/replacement of products must
only be carried out by qualified professional person-
nel using exclusively genuine parts. Failure to com-
ply with the above could affect the safety of the unit.
• Periodical maintenance carried out by qualified per-
sonnel is essential for guaranteeing good operation
of the unit.
• This unit must only be used for the purpose for which
it was designed. Any other use is considered im-
proper and therefore hazardous.
• After removing the packing, check the integrity of the
contents. Packing materials must not be left within the
reach of children as they are potentially hazardous.
• In case of doubt do not use the unit, and contact the
supplier.
• The images shown in this manual are a simplified
representation of the product. In this representation
there may be slight, unimportant differences with the
supplied product.

PEGASUS D Ki 100
3
3540L870 cod. 3540L870 - 03/2009 (Rev. 00)
1 Operating instructions ............................................................................................................ 4
1.1 Introduction.............................................................................................................................................4
1.2 Control panel ..........................................................................................................................................4
1.3 Turning on and off ..................................................................................................................................5
1.4 Adjustments............................................................................................................................................7
2 Installation .............................................................................................................................. 11
2.1 General Instructions .............................................................................................................................11
2.2 Place of installation ..............................................................................................................................11
2.3 Plumbing connections ..........................................................................................................................11
2.4 Gas connection ....................................................................................................................................12
2.5 Electrical connections...........................................................................................................................12
2.6 Connection to the flue ..........................................................................................................................13
3 Service and maintenance...................................................................................................... 14
3.1 Adjustments..........................................................................................................................................14
3.2 Start-up.................................................................................................................................................16
3.3 Maintenance.........................................................................................................................................17
3.4 Troubleshooting....................................................................................................................................21
4 Technical data and characteristics ...................................................................................... 23
4.1 Dimensions, connections and main components .................................................................................23
4.2 Pressure losses....................................................................................................................................24
4.3 Technical data table .............................................................................................................................25
4.4 Wiring diagram .....................................................................................................................................26

PEGASUS D Ki 100
4EN
cod. 3540L870 - 03/2009 (Rev. 00)
1. Operating instructions
1.1 Introduction
Dear Customer,
Thank you for choosing PEGASUS D Ki 100, a floor-standing boiler FERROLI featuring advanced design, cutting-edge
technology, high reliability and quality construction. Please read this manual carefully and keep it for future reference.
PEGASUS D Ki 100 is a high-efficiency heat generator for heating and domestic hot water production running on nat-
ural or liquefied gas and regulated by an advanced electronic control system.
PEGASUS D Ki 100 it is equipped with a rapid hot water storage tank in AISI316L stainless steel, and protected against
corrosion by a magnesium anode.
The boiler shell consists of cast-iron elements whose particular shape guarantees high exchange efficiency in all oper-
ating conditions and an open-flue burner equipped with electronic ignition and ionisation flame control.
1.2 Control panel
fig. 1 - Control panel
Key
1 = DHW temperature setting decrease button
2 = DHW temperature setting increase button
3 = Heating system temperature setting decrease
button
4 = Heating system temperature setting increase
button
5 = Display
6 = Summer / Winter mode selection button
7 = Economy / Comfort mode selection button
8 = Reset button
9 = Unit On / Off button
10 = "Sliding Temperature" menu button
11 = Set DHW temperature reached
12 = DHW symbol
13 = DHW operation
14 = DHW outlet temperature / setting
15 = Eco (Economy) or Comfort mode
16 = External sensor temperature (with optional ex-
ternal probe)
17 = Appears on connecting the external Probe 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
23 = Heating delivery temperature / setting
24 = Heating symbol
25 = Heating operation
26 = Set heating delivery temperature reached
27 = Summer mode
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5791021
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12 1411
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15 16
17182021222325
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19

PEGASUS D Ki 100
5EN cod. 3540L870 - 03/2009 (Rev. 00)
Indication during operation
Heating
A heating demand (generated by the Room Thermostat or Remote Timer Control) is indicated by flashing of the hot air
above the radiator (details 24 and 25 - fig. 1).
The heating graduation marks (detail 26 - fig. 1) light up as the heating sensor temperature reaches the set value.
fig. 2
DHW (Comfort)
A DHW demand (generated by drawing domestic hot water) is indicated by flashing of the hot water under the tap (de-
tails 12 and 13 - fig. 1). Make sure the Comfort function (detail 15 - fig. 1) is activated
The DHW graduation marks (detail 11 - fig. 1) light up as the DHW sensor temperature reaches the set value.
fig. 3
Exclude hot water tank (economy)
Hot water tank temperature maintaining/heating can be excluded by the user. If excluded, domestic hot water will not
be delivered.
When hot water tank heating is activated (default setting), the COMFORT symbol (detail 15 - fig. 1) is activated on the
display, and when off, the ECO symbol (detail 15 - fig. 1) is activated on the display
The hot water tank can be deactivated by the user (ECO mode) by pressing the button (detail 7 - fig. 1). To ac-
tivate COMFORT mode, press the button (detail 7 - fig. 1) again.
1.3 Turning on and off
Boiler not electrically powered
fig. 4 - Boiler not electrically powered
BThe 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 winter, it is advisable to drain all water from the boiler, DHW
circuit and system; or drain just the DHW circuit and add a suitable antifreeze to the heating system, complying
with that prescribed in sec. 2.3.
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PEGASUS D Ki 100
6EN
cod. 3540L870 - 03/2009 (Rev. 00)
Boiler lighting
• Open the fuel on-off valves.
• Switch on the power to the unit.
fig. 5 - Boiler lighting
• For the next 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 release.
• 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.
AIf, after correctly carrying out the lighting procedure, the burners do not light and fault A01 appears on the dis-
play, wait about 15 seconds then press the RESET button. The flame controller thus reset will repeat the light-
ing cycle. If the burners do not light after a number of attempts, consult the faults section.
AIn case of a power failure while the boiler is working, the burners will go out and relight automatically when the
power is restored.
Turning the boiler off
Press the button (detail 9 - fig. 1) for 1 second.
fig. 6 - Turning the boiler off
When the boiler is turned off, the electronic board is still powered.
Domestic hot water and heating operation are disabled. The antifreeze system remains activated.
To relight the boiler, press the button (detail 9 fig. 1) again for 1 second.
fig. 7
The boiler will be immediately ready to operate whenever domestic hot water is drawn or in case of a room thermostat
demand.
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PEGASUS D Ki 100
7EN cod. 3540L870 - 03/2009 (Rev. 00)
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 supply to the unit.
BTo avoid damage caused by freezing during long idle periods in winter, it is advisable to drain all water from
the boiler and system; or add a suitable antifreeze to the heating system.
1.4 Adjustments
Summer/Winter changeover
Press the button (detail 6 - fig. 1) for 1 second.
fig. 8
The display activates the Summer symbol (detail 27 - fig. 1): the boiler will only deliver domestic hot water. The anti-
freeze system remains activated.
To deactivate Summer mode, press the button (detail 6 - fig. 1) again for 1 second.
Heating temperature setting
Operate the heating buttons (details 3 and 4 - fig. 1) to adjust the temperature from a min. of 30°C to a max.
of 90°C; it is advisable not to operate the boiler below 45°C.
fig. 9
Hot water temperature adjustment
Operate the DHW buttons (details 1 and 2 - fig. 1) to adjust the temperature from a min. of 10°C to a max.
of 65°C.
fig. 10
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PEGASUS D Ki 100
8EN
cod. 3540L870 - 03/2009 (Rev. 00)
Room temperature adjustment (with optional room thermostat)
Using the room thermostat, set the temperature desired in the rooms. If the room thermostat is not installed the boiler
will keep the heating system at its setpoint temperature.
Room temperature adjustment (with optional remote timer control)
Using the remote timer control, set the temperature desired in the rooms. The boiler unit will set the system water ac-
cording to the required room temperature. For information on the remote timer control, please refer to its user's manual.
Sliding Temperature
When the optional external probe is installed the control panel display (detail 5 - fig. 1) shows the actual outside tem-
perature read by the probe. The boiler control system operates with "Sliding Temperature”. In this mode, the tempera-
ture of the heating system is controlled according to the outside weather conditions, to ensure high comfort and energy
saving throughout the year. In particular, as the outside temperature increases the system delivery temperature de-
creases according to a specific "compensation curve”.
With Sliding Temperature adjustment, the temperature set with the heating buttons (details 3 and 4 - fig. 1)
becomes the maximum system delivery temperature. It is advisable to set the maximum value to allow system adjust-
ment throughout its useful operating range.
The boiler must be adjusted at the time of installation by qualified personnel. Adjustments can in any case be made by
the user to improve comfort.
Compensation curve and curve offset
Press the button (detail 10 - fig. 1) once to display the compensation curve (fig. 11), which can be modified with the
DHW buttons (details 1 and 2 - fig. 1).
Adjust the required curve from 1 to 10 according to the characteristic (fig. 13).
By setting the curve to 0, sliding temperature adjustment is disabled.
fig. 11 - Compensation curve
Press the heating buttons (details 3 and 4 - fig. 1) to access parallel curve offset (fig. 14), modifiable with the
DHW buttons (details 1 and 2 - fig. 1).
fig. 12 - Parallel curve offset
Press the button (detail 10 - fig. 1) again to exit parallel curve adjustment mode.

PEGASUS D Ki 100
9EN cod. 3540L870 - 03/2009 (Rev. 00)
If the room temperature is lower than the required value, it is advisable to set a higher order curve and vice versa. Pro-
ceed by increasing or decreasing in steps of one and check the result in the room.
fig. 13 - Compensation curves
fig. 14 - Example of parallel compensation curve shift
Adjustments from Remote Timer Control
AIf the Remote Timer Control (optional) is connected to the boiler, the above adjustments are managed accord-
ing to that given in table 1. Also, the control panel display (detail 5 - fig. 1) shows the actual room temperature
read by the Remote Timer Control.
Table. 1
Heating temperature adjustment Adjustment can be made from the Remote Timer Control menu and the boiler
control panel.
Domestic hot water temperature adjustment Adjustment can be made from the Remote Timer Control menu and the boiler
control panel.
Summer/Winter switchover Summer mode has priority over a possible Remote Timer Control heating
demand.
Eco/Comfort selection
On disabling DHW from the Remote Timer Control menu, the boiler selects
the Economy mode. In this condition, the button 7 - fig. 1 on the boiler panel
is disabled.
On enabling DHW from the Remote Timer Control menu, the boiler selects
the Comfort mode. In this condition it is possible select one of the two modes
with the button 7 - fig. 1 on the boiler panel.
Sliding Temperature Both the Remote Timer Control and the boiler card manage Sliding Tempera-
ture adjustment: of the two, the boiler card Sliding Temperature has priority.
20
30
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90
85
20 10 0 -10 -20
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OFFSET = 20 OFFSET = 40

PEGASUS D Ki 100
10 EN
cod. 3540L870 - 03/2009 (Rev. 00)
Water system pressure adjustment
The filling pressure with system cold, read on the boiler water gauge, must be approx. 1.0 bar. If the system pressure
falls to values below minimum, the boiler card will activate fault F37 (fig. 15).
fig. 15 - Low system pressure fault
Operate the filling cock (detail 1 - fig. 16) and bring the system pressure to a value above 1.0 bar.
fig. 16 - Filling cock
AOnce the system pressure is restored, the boiler will activate the 120-second air venting cycle indicated on the
display by FH.
At the end of the operation always close the filling cock (detail 1 - fig. 16)
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