Ferroli Domina Plus F 24-30 E User manual

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DOMINA PLUS F 24-30 E FERELLA EXTRA F 24-30 MEL
Wall-Mounting Gas
Boiler with antifreeze
for tap water
Airtight Chamber, for
Hot Water and Heating
TECHNICAL
MANUAL


EDITION
092002

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
1. Technical characteristics and data ........................................................ 3
1.1 Introduction .............................................................................................................. 3
1.2 Dimensions and connections .................................................................................. 4
1.3 General view and main components ....................................................................... 8
1.4 Technical data table ............................................................................................... 10
2. Hydraulic circuit - heating ................................................................... 11
2.1 H draulic circuit - heating ...................................................................................... 11
2.2 H draulic circuit - tap water ................................................................................... 15
2.3 Gas circuit ............................................................................................................. 17
2.4 Burner unit ............................................................................................................. 21
2.5 Fume circuit .......................................................................................................... 23
2.6 Electrical circuit ..................................................................................................... 27
3. Operation ............................................................................................ 30
3.1 Operating principle ................................................................................................ 30
3.2 Operating diagram................................................................................................. 32
3.3 Control panel ......................................................................................................... 33
3.4 Adjustments........................................................................................................... 35
3.5 Operating parameter adjustment .......................................................................... 38
4. Unit self-diagnosis .............................................................................. 43

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
1. TECHNICAL CHARACTERISTICS AND DATA
1.1 Introduction
Our unit is a high-efficiency heat generator for heating and hot water production running on natural or liquefied
petroleum gas (configurable at the time of installation) and regulated by an advanced microprocessor control
system.
The boiler shell consists of a copper laminar exchanger whose particular shape guarantees high exchange
efficiency under all operating conditions and an open-flue burner equipped with electronic ignition and ionization
flame control.
The boiler is totally sealed off from the installation room the air needed for combustion is drawn from outside
and the flue gases are expelled by a fan. The boiler outfit moreover includes a variable speed circulator,
expansion tank, flow meter, safety valve, filler cock, air pressure switch, water pressure switch, temperature
sensors, safety thermostat and an antifreeze thermostat with the relevant heating elements.
Thanks to the microprocessor control and adjustment system with advanced self-diagnosis, unit operation is
for the most part automatic. The power for heating is automatically governed by the control system according
to the indoor and outdoor characteristics (with an optional outdoor sensor installed), the characteristics of the
building and of its location. The power for hot water is automatically and continually governed to ensure a fast
delivery and comfort under all operating conditions.
The display continuously provides information on the unit's operating status and it is easily possible to obtain
additional information on the sensor temperatures, set-points, etc. or configure them. Any operating trouble
associated with the boiler or system is immediately signalled by the display and, if possible, corrected
automatically.
General Warnings
·Installation and maintenance must be carried out by professionally qualified personnel, according
to current regulations and the manufacturer's instructions.
·Incorrect installation or poor maintenance can cause damage or physical injury. The manufacturer
declines any responsibility for damage caused by errors in installation and use or by failure to
follow the manufacturer's instructions given in the instructions manual.
·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.
Certification
The CE marking demonstrates that Ferroli gas units conform to the requirements contained in the
applicable European directives.
In particular, this unit complies with the following EU directives
·Gas Appliance Directive 90/396 assimilated with Italian Presidential Decree DPR 15.11.96 no. 661
·Efficiency Directive 92/42 assimilated with Italian Presidential Decree DPR 15.11.96 no. 660
·Low Voltage Directive 73/23 (amended by 93/68)
·Electromagnetic Compatibility Directive 89/336 (amended by 93/68) assimilated with Italian
Presidential Decree DPR 15.11.96 no. 615

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
1.2 Dimensions and connections
Domina Plus F 24 E version
1149560609536
100
Connections axis
720
725
Connections axis 100
270 460
16025
10
175100
15012012070
110
80 80
80
460
12345
Key
1 System delivery
2 Tap water outlet
3 Gas inlet
4 Tap water inlet
5 System return
Top view
Bottom view

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
Ferella Extra F 24 MEL version
Key
1 System delivery
2 Tap water outlet
3 Gas inlet
4 Tap water inlet
5 System return
Top view
Bottom view
1149560609536
100
Connections axis
720
725
Connections axis 100
270 460
16025
10
175100
15012012070
110
80 80
80
460
12345

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
Key
1 System delivery
2 Tap water outlet
3 Gas inlet
4 Tap water inlet
5 System return
Top view
Bottom view
733
460
430362
189
Connections axis
460
120120110
80
110
8080
36 95 60 60 155 54
4
23 5
1
200
420
189
175
14
Domina Plus F 30 E version

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
Ferella Extra F 30 MEL version
Key
1 System delivery
2 Tap water outlet
3 Gas inlet
4 Tap water inlet
5 System return
Top view
Bottom view
460
430
362
189
460
120120110
80
110
8080
36 95 60 60 155 54
4
23 5
1
200
720
189
175
14
733
Connections axis

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
Key
5Airtight chamber
7Gas inlet
8Tap water outlet
9Tap water inlet
10 System delivery
11 System return
14 Safety valve
16 Fan
19 Combustion chamber
20 Burner assembly
21 Main nozzle
22 Burner
26 Combustion chamber insulation
27 Copper e changer for heating and
tap water
28 Fume manifold
29 Fume outlet manifold
32 Heating circulator
34 Heating temp. sensor
36 Automatic air vent
42 Tap water temperature sensor
43 Air pressure switch
44 Gas valve
49 Safety thermostat
56 E pansion tank
63 Heating temperature setting
73 Antifreeze thermostat
74 System filler cock
81 Ignition electrode
82 Detection electrode
84 1st gas valve operator
85 2nd gas valve operator
90 Fume detection point
91 Air detection point
98 Off-On-Reset switch
114 Water pressure switch
132 Fume deflector
136 Flow meter
145 Water gauge
157 Tap water temperature setting
187 Fume diaphragm
R1-R2-R3-R4 Antifreeze heating elements
1.3 General view and main com onents
F 24 E/MEL version
29 43
16
27
19
49
28
5
20
21
26
132
187
90 91
81
8222
56
IN OUT
MIN
R1
R4
36
0
5
1
234
6
145
R2
R3
10 874 784 85 44 136
114
34
14 42 9 11
32
73
98 63 157
RESET
°C °C

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
F 30 E/MEL version
R1
R4
R2
818222
29 43187
0
5
1
234
6
145
20
21
90
16
28
26
19
49
132
5
56
27
91
IN OUT
MIN
GRUNDFOS
74
73
R3
34
10 8 784 85 44 136 14 42 9 11
36
114
32
98 63 157
RESET
°C °C
Key
5Airtight chamber
7Gas inlet
8Tap water outlet
9Tap water inlet
10 System delivery
11 System return
14 Safety valve
16 Fan
19 Combustion chamber
20 Burner assembly
21 Main nozzle
22 Burner
26 Combustion chamber insulation
27 Copper e changer for heating and
tap water
28 Fume manifold
29 Fume outlet manifold
32 Heating circulator
34 Heating temp. sensor
36 Automatic air vent
42 Tap water temperature sensor
43 Air pressure switch
44 Gas valve
49 Safety thermostat
56 E pansion tank
63 Heating temperature setting
73 Antifreeze thermostat
74 System filler cock
81 Ignition electrode
82 Detection electrode
84 1st gas valve operator
85 2nd gas valve operator
90 Fume detection point
91 Air detection point
98 Off-On-Reset switch
114 Water pressure switch
132 Fume deflector
136 Flow meter
145 Water gauge
157 Tap water temperature setting
187 Fume diaphragm
R1-R2-R3-R4 Antifreeze heating elements

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DOMINA PLUS F 24 - 30 E
FERELLA EXTRA F 24 - 30 MEL
Version - 09.2002
1.4 Technical data table
Gas supply Pmax Pmin
Heating Power (Net Heat Value Hi)
Useful Heating Power 80°C 60°C
Tap Water Heating Power
Powers Pmax Pmin
kcal/h 20,400 8,300
kW 23.8 9.7
kcal/h 20,400 8,300
kW 23.8 9.7
kcal/h 22,200 9,900
kW 25.8 11.5
Dimensions, weights connections
Depth mm 272
Width mm 460
Height mm 760
Tap water
Minimum working pressure in hot water production bar 0.25
Maximum working pressure in hot water production bar 9
Maximum hot water production Dt 30°C l/min 11.3
Maximum hot water production Dt 25°C l/min 13.6
Boiler water content litres 0.8
Expansion tank pre filling pressure bar 1
Expansion tank capacity litres 7
Minimum working pressure in heating bar 0.8
Maximum working pressure in heating bar 3
Maximum working temperature in heating °C 90
Electrical protection rating IP 44
Electrical power supply
Power voltage/frequency V/Hz 230/50
Max electrical power absorbed W 125
Hot water circuit connections inches 1/2
Heating system connections inches 3/4
Gas system connection inches 1/2
Weight kg 38
Heating
Natural Gas delivery (G20) nm3/h 2.73 1.22
DOMINA P US - FERE A EXTRA
Natural Gas main nozzles (G20) mm 12 x 1.30
Pressure at Natural Gas burner (G20) mbar 11.8 2.5
Natural Gas supply pressure (G20) mbar 20.0
LPG delivery (G31) kg/h 2.00 0.89
LPG main nozzles (G31) mm 12 x 0.77
Pressure at LPG burner (G31) mbar 36.0 7.8
LPG supply pressure (G31) mbar 37.0
Safety valve bar 3
Hot water content litres 0.8
24kW 30kW
Pmax Pmin
Pmax Pmin
25,800 10,900
30.0 12.7
25,800 10,900
30.0 12.7
28,500 12,500
33.1 14.5
363
460
760
0.25
9
14.3
17.2
1.5
1
10
0.8
3
90
44
230/50
125
1/2
3/4
1/2
48
3.50 1.53
16 x 1.25
13.0 2.5
20.0
2.60 1.14
16 x 0.75
35.5 7.0
37.0
3
0.8