Ferroli ROMA 55 FF Guida utente
These Instructions are to be left with the User or adjacent to the gas meter.
FERROLI ROMA 55 FF
WALL MOUNTED,
FANNED FLUE BOILER
INSTALLATION
& SERVICING
INSTRUCTIONS
G.C. Appliance No. 4126705
Please read these Instructions
thoroughly before using
the appliance
FERROLI HELPINE
FOR SERVICE INFORMATION OR
HELP TELEPHONE: 08707 282 885
ALWAYS QUOTE SERIAL NUMBER
FOR IMMEDIATE ASSISTANCE
Phone numbers:
Installer ________________________
Service Engineer _________________
Serial N°________________________
2
ROMA 55 FF
3
ROMA 55 FF
LIST OF CONTENTS
1 General description and information
2 Technical data
3 Boiler flow diagram
4 Key boiler flow diagram
5 Installation data
5.01 Water systems
5.02 Open (vented) systems
5.03 Sealed systems
5.04 Pump selection
5.05 Drain points
5.06 Hot storage vessel
5.07 Quality of componets
5.08 Corrosion inhibitors, flushing
5.09 Flue system
5.10 Se duct terminator
5.11 Ventilation
6 Terminal position (outside)
7 Terminal position
8 Location
8.01 Boiler location
9 Boiler connection
9.01 Gas supply
10 Electricity supply and connections
11 Boiler flow diagram
12 Electrical functional
13 Illustrated wiring diagram
14 Installation procedure
14.1 Unpacking
14.2 Prepare the boiler
14.3 Prepare the wall
14.4 Prepare the flue and air pipes
14.5 Mouting the boiler
14.6 Connections services
15 Commissioning
16 Fault finding
16.1 Fault finding
16.2 Fault finding
17 Replacement of parts
17.01 General procedures and notes
17.02 Acces
17.03 Fan
17.04 Pilot burner assembly
17.05 Electrode
17.06 Thermocouple
17.07 Thermostats
17.08 Main burner/injectors
17.09 Heat exchanger
17.10 Combustion chamber insulation
17.11 Viewing window
17.12 Pressure switch
17.13 Gas control valve
17.14 Viewing window
17.15 Control box components
18 Routine servicing
18.01 General
18.02 Pre-servicing
18.03 Servicing procedures
18.04 Reassembly
19 Parts
20 Parts list
4
ROMA 55 FF
1. General description and information
1.1 Information
1. Installation must be carried out by a competent person, and in accordance with the relevant requirements of the
current issues of:
A. Gas Safety (Installation & Use) Regulations.
B. Building Regulations.
C. Building Standards (Scotland) Regulations.
D. I.E.E. Wiring Regulations.
E. Bye-laws of the local water undertaking.
Guidance on Installation is provided in this booklet, but due account must be taken of the detailed recommendations
of the current issues of:
BS 5440 Part 1: Flues.
BS 5440 Part 2: Ventilations.
BS 6798: Installation.
BS 5449: Pumped systems.
BS 5546: Domestic hot water.
BS 6700: Water supply.
BS 6891: Gas supply.
BS 7074 Part 1: Expansion vessels.
For installation in timber framed buildings, refer to the British Gas Publication Guide for gas installation in timber
framed housing - REF DM2.
2. It is essential that the boiler be installed strictly in accordance with these Instructions and the documents, detailed
above.
3. To avoid the possibility of injury, care must be taken when handling sheet metal componets.
1.2 General description
TheROMA55FFisawallmountedfannedflueboiler,sultableforconnectiontosealed or open vented water systems,
supplying central heating and/or indirect (stored) domestic hot water.
A balanced flue system is supplied, suitable for horizontal and vertical termination only, but which can, if desired, be
taken from the rear, sides or top of the boiler*.
NOTE
* Side exit or vertical exit requires the optional side / vertical flue turret.
5
ROMA 55 FF
2. Technical data
HEAT INPUT 20 KW 68,200 Btu/h 10 kW 34,100 Btu/h
HEAT OUTPUT 16 KW 55,000 Btu/h 7.3 kW 25,000 Btu/h
BURNER PRESSURE 12 mbar 4.7 in wg 2.4 mbar 1.0 in wg
GAS RATE - AFTER 10 MINUTES 1.9 m3/h 66 ft3/H 0.95 m3/h 33 ft3/h
GAS CONNECTION SIZE / POSITION 1/2" Bsp / left hand side, rear base
GAS MAXIMUN OF RANGE MINIMUM OF RANGE
MAXIMUN HEAD OR PRESSURE 30 m 43.5 psi 3.0 bar 43.5 psi
MINIMUM HEAD OR PRESSURE 0.2 m 8" 0.8 bar 11.6 psi
if pressurised type
MAXIMUM FLOW TEMPERATURE 85°C85°C
TEMPERATURE DIFFERENTIAL 11°C beetween flow and return connections, recommended
MINIMUM WATER FLOW RATE 0.36 m3/h 12.7 ft3/h
WATER CONTENT 0.5 litres 0.11 gal.
CONNECTIONS 22 mm compression, right hand side, rear, top
WATER OPEN VENTED SEALED
ELECTRICAL
SUPPLY Mains supply 230 V ~ 50 Hz fused 3 Amp.
POWER CONSUMPTION 50 Watt (without pump)
CONNECTIONS MAINS / CONTROL 5 wire electrical lead
Brown - Live Permanent
Blue - Neutral mains supply
Green/Yellow - Earth 230 V ~
Black - Switched Live from external controls
Red - Live to external controls
CONNECTIONS PUMP 3 wire electrical lead
Brown - Live To
Blue - Neutral circulating
Green/Yellow - Earth pump
}
}
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ROMA 55 FF
3. Boiler flow diagram
7
ROMA 55 FF
4. Key boiler flow diagram
POS. G.C. No. DESCRIPTION Q.ty
3. Flue/air intake (side outlet) 1
16. Complete fan RL 85/0034A1 3025LH 422 1
21a. Main injector N.G. 1.25 9
21b. Main injector L.P.G. 0.72 9
23. Thermocouple 1
24. Complete spark electrode 1
25. Pilot 1
27. Copper heat exchanger 1
43. Air pressure switch 1
44. Combination gas valve V4600C 1193 1
49. Overheat cut/off thermostat 1
50. Central heating limit thermostat 1
58. Combustion chamber pressure test point (+) 1
59. Flue outlet pressure test point (-) 1
63. C.H. boiler thermostat 1
66. Microswitch combination gas valve 1
67. Ignition transformer (CAST) 1
79. Capacitor fan IMF 1
80. Complete P.C.B. VF.1 1
87. Venturi flue testpoint 1
103. Relay 1
104. Fuse 2A 1
105. Complete burner set 1
106. Gascock 1
107. Flue/air intake flange rear outlet 1
108. Combustion chamber outlet cover 1
109. Combustion chamber insulation, back and sides 1
110. Eco split wire 1
111. Combustion chamber front panel 1
112. Pilot injector N.G. 0.27 1
112b. Pilot injector L.P.G. 0.22 1
133. Pump overrun thermostat 1
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ROMA 55 FF
5. Installation data
* h = maximum head developed by pump.
5.1 Water System
General
1. The ROMA 55 FF will supply central heating and, via an indirect cylinder, stored hot water.
2. All water systems must be in accordance with the Bye-Laws of the Local Water Undertaking.
3. Only fully pumped systems can be used.
4. Two pipe heating systems are recommended.
5. Systems can be either of the open (vented) or sealed type.
5.2 Open (Vented) System
1. Further guidance: BS 5449, BS 6798 and British Gas Publications.
2. Two typical systems are shown above. Note that close coupled or combined feed and vents are permitted.
3. Cold Feed: Minimum 15 mm copper but minimum 22 mm if combined with open vent.
4. Open Vend: Minimum 22 mm copper.
5. No valves between the boiler and the open vent.
6. A Bypass must be fitted which allows a minimum flow of 6 litres/min. (1.3 gal/min.)
ROMA
MAX. 150 mm.
*h/3 min/mm
INDIRECT
CYLINDER.
ROMA
HEATING
SYSTEM
OPEN VENTED
CLOSE COUPLED
FEED AND VENT.
*h/3 min/mm
INDYRECT
CYLINDER
HEATING
SYSTEM.
OPEN VENTED
FEED ON RETURN
9
ROMA 55 FF
5.3 Sealed System
1. Further guidance: BS 5449, BS 6798, BS 7074 Part 1, British Gas Publications.
2. Two typical sealed systems are shown, above.
3. COMPONENTS:
a) EXPANDION VESSEL.
To BS 4814. Sized according to BS 5449 and/or BS 7074 Part 1. Positioned on the inlet to the pump.
b) SAFETY VALVE.
Always on the flow and next to the boiler. Non adjustable and set to 3 bar. Routed direct to drain in an area not
susceptable to freezing, nor where it is hazardous. Do not reduce pipe size from that on the valve.
c) PRESSURE GAUGE (May incorporate a temperature gauge).
Must have a fill pressure indicator, and be readily visible to the User. Range 0 to 4 bar.
d) AIR VENT. Highest point of the system.
e) PUMP. Suitable for the system. See 5.4.
f) FILLING POINT.
Shallbeatlowlevel,inaccordancewithlocalWaterAuthorityrequirement,andgenerallyhaveastopvalvetoBS1010,
as well as a double check valve. Filling can be achieved either by means of a temporary hose or via a cistern used for
no other purpose, with a minimum static head of 300 mm to the highest point of system.
g) SYSTEM MAKE UP.
Canbeachieved either automatically - from an independent cistern used for nootherpurpose,orfromamanuallyfilled
top up bottle through a double check valve, OR manually, by a temporary hose connection.
IMPORTANT
Any method of filling and of make up MUST comply with Regulations of the Local Water Authority.
ROMA ROMA
SEALED SYSTEM
PUMP ON THE FLOW SEALED SYSTEM
PUMP ON THE FLOW
10
ROMA 55 FF
Boiler pressure loss
5.4 Pump selection
Suitable pump should be fitted taking due account of the pressure loss across the boiler.
Pump to comply with BS 1394. A minimum flow rate of 6 litres/min (1.3 gal/min) is required.
5.5 Drain points
Must be provided to enable the system to be drained - taps to BS 2879.
5.6 Hot water storage cylinder
Must be either of the indirect coil type or a direct cylinder suitably adapted by fitment of an immersion calorifier. Direct
cylinders must not be used.
5.7 Quality of components
All components, fittings, and joint must be suitable for temperatures up to 110°C and, for sealed systems, pressures
up to 3 bar.
5.8 Flushing
Anysystem,neworold,mustbeflushedinaccordancewiththeCommissioningInstructions.Itisessentialthatasmuch
residual sludge and debris be removed as is possible.
mbar
litres/sec
gal/min
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