Gas Connection; Electrical Connections; Connection To The Flue - Ferroli PEGASUS D 30 K 100 LN Instrucciones De Uso

PEGASUS D 30 K 100 LN

3.4 Gas connection

B
Before making the connection, make sure the unit is arranged for operation with
the type of fuel available and carefully clean all the system gas pipes to remove
any residuals or impurities that could affect proper operation of the boiler.
The gas must be connected to the respective union (see fig. 25) in conformity with cur-
rent regulations, with a rigid metal pipe or with a continuous surface flexible s/steel tube,
installing a gas cock between the system and boiler. Make sure all the gas connections
are tight.
The capacity of the gas meter must be sufficient for the simultaneous use of all the ap-
pliances connected to it. The diameter of the gas pipe leaving the boiler does not deter-
mine the diameter of the pipe between the unit and the meter; it must be chosen
according to its length and pressure losses, in conformity with the current regulations.
B
Do not use the gas pipes to earth electrical appliances.

3.5 Electrical connections

Connection to the electrical grid
B
The unit's electrical safety is only guaranteed when correctly connected to an
efficient earthing system executed according to current safety standards. Have
the efficiency and suitability of the earthing system checked by professionally
qualified personnel. The manufacturer is not responsible for any damage
caused by failure to earth the system. Also make sure that the electrical system
is adequate for the maximum power absorbed by the unit, as specified on the
boiler dataplate.
The boiler is prewired and provided with a Y-cable and plug for connection to the elec-
tricity line. The connections to the grid must be made with a permanent connection and
equipped with a bipolar switch whose contacts have a minimum opening of at least 3
mm, interposing fuses of max. 3A between the boiler and the line. It is important to re-
spect the polarities (LINE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green
wire) in making connections to the electrical line. During installation or when changing
the power cable, the earth wire must be left 2 cm longer than the others.
B
The user must never change the unit's power cable. If the cable gets damaged,
switch off the unit and have it changed solely by professionally qualified person-
nel. If changing the electric power cable, use solely "HAR H05 VV-F" 3x0.75
mm2 cable with a maximum outside diameter of 8 mm.
Room thermostat (optional)
B
IMPORTANT: THE ROOM THERMOSTAT MUST HAVE VOLTAGE-FREE
CONTACTS. CONNECTING 230 V TO THE ROOM THERMOSTAT TERMI-
NALS WILL PERMANENTLY DAMAGE THE ELECTRONIC BOARD.
When connecting time controls or a timer, do not take the power supply for
these devices from their breaking contacts Their power supply must be by
means of direct connection from the mains or with batteries, depending on the
kind of device.
Accessing the electrical terminal block
Undo the two screws "A" located on the top part of the control panel and remove the
cover.
fig. 17 - Accessing the terminal board

3.6 Connection to the flue

The flue connection pipe diameter must not be less than that of the connection on the
anti-backflow device. Starting from the anti-backflow device it must have a vertical sec-
tion at least 50 cm long. Comply with the current standards regarding installation and siz-
es of the flues and connection pipe.
The diameter of the anti-backflow device collar is given in fig. 25.
A
cod. 3540T301 - 02/2010 (Rev. 00)
4. SERVICE AND MAINTENANCE
4.1 Adjustments
All adjustment, conversion, start-up and maintenance operations described below must
only be carried out by Qualified Personnel (meeting the professional technical require-
ments prescribed by current regulations) such as those of the Local After-Sales Techni-
cal Service.
TEST mode activation
Press the heating buttons
onds to activate TEST mode. The boiler lights at maximum power.
The heating symbol (detail 24 - fig. 1) and DHW symbol (detail 12 - fig. 1) flash on the
display.
fig. 18 - Operation in TEST mode
To deactivate TEST mode, repeat the activation sequence.
In any case, TEST mode is automatically deactivated after 15 minutes.
Heating system output adjustment
On PEGASUS D 30 K 100 LN boilers, the firebox heating power and therefore the heat
output delivered to the heating water can only be adjusted by means of the main burner
through the gas valve, (see fig. 19). The diagrams given in the section cap. 5.2 indicate
the variation in heat output delivered to the water according to the change in burner op-
erating pressure. Being able to adjust boiler output to the actual heating requirements
means above all reducing heat losses, and therefore obtaining fuel saving. Also, with the
variation in output, also regulated by the provisions, the boilers keep their efficiency lev-
els and combustion characteristics practically unchanged
This operation is carried out with the boiler working and the water storage tank heated.
1. Using a small screwdriver, remove the secondary operator protection cap 5 of the
gas valve of fig. 19.
2. Connect a manometer to the pressure point 2 (fig. 19) located below the gas valve,
and turn the boiler thermostat knob to the maximum value.
3. Adjust the pressure to the required value by means of the screw 6 (fig. 19), referring
to the diagrams given in section cap. 5.2.
4. Then turn the burner on and off 2 or 3 times by means of the control thermostat and
check that the pressure value is that just set; otherwise, another adjustment must
be made to bring the pressure to the correct value.
Gas conversion
The unit can operate on natural gas (G20) or liquefied gas (G31) and is factory-set for
use with one of these two gases, as clearly shown on the packing and on the dataplate.
Whenever a different gas to that for which the unit is preset has to be used, a conversion
kit will be required, proceeding as follows:
1. Replace the nozzles at the main burner and pilot burner, fitting the nozzles specified
in the technical data table in cap. 5.3, according to the type of gas used
2. Remove the small protection cap 3 (fig. 19) from the gas valve. Using a small screw-
driver, adjust the ignition "STEP" for the required gas (G20 or G31); then refit the
cap.
3. Adjust the gas pressure at the burner, setting the values given in the technical data
table for the type of gas used.
4. Apply the sticker contained in the conversion kit, near the dataplate as proof of the
conversion.
(part. 3 and 4 - fig. 1) at the same time for 5 sec-
eco
bar
EN 35