Ferroli PEGASUS F2 51, PEGASUS F2 68, PEGASUS F2 85, PEGASUS F2 102 Instructions For Use, Installation And Maintenance

INSTALLATION ANDINSTALLATION AND

INSTALLATION AND

INSTALLATION ANDINSTALLATION AND

MAINTENANCE INSTRUCTIONSMAINTENANCE INSTRUCTIONS

MAINTENANCE INSTRUCTIONS

MAINTENANCE INSTRUCTIONSMAINTENANCE INSTRUCTIONS

PEGASUS F2PEGASUS F2

PEGASUS F2

PEGASUS F2PEGASUS F2

Appr. nr. A 9503 A - 0085 AQ 0765

GAS-FIRED CAST-IRON BOILERSGAS-FIRED CAST-IRON BOILERS

GAS-FIRED CAST-IRON BOILERS

GAS-FIRED CAST-IRON BOILERSGAS-FIRED CAST-IRON BOILERS

WITH ELECTRONIC IGNITIONWITH ELECTRONIC IGNITION

WITH ELECTRONIC IGNITION

WITH ELECTRONIC IGNITIONWITH ELECTRONIC IGNITION

AND FLAME RECTIFICATION MONITORINGAND FLAME RECTIFICATION MONITORING

AND FLAME RECTIFICATION MONITORING

AND FLAME RECTIFICATION MONITORINGAND FLAME RECTIFICATION MONITORING

Models 51 - 68 - 85 - 102Models 51 - 68 - 85 - 102

Models 51 - 68 - 85 - 102

Models 51 - 68 - 85 - 102Models 51 - 68 - 85 - 102

cod. 3543463/0 - 01/01

ContentsContents

Contents

ContentsContents

1.1.

1. General technical data .............................................................................................................. 3

1.1.

2.2.

2. Dimensions and technical data ................................................................................................. 3

2.2.

3.3.

3. Boiler installation ...................................................................................................................... 7

3.3.

4.4.

4. Wiring and connection diagrams...............................................................................................8

4.4.

5.5.

5. Startup and shutdown ............................................................................................................. 13

5.5.

6.6.

6. Regulating ............................................................................................................................... 15

6.6.

7.7.

7. Fuel conversion (from natural to l.p.g. Gas) ............................................................................. 19

7.7.

8.8.

8. Maintenance and cleaning ...................................................................................................... 20

8.8.

9.9.

9. Fault finding ............................................................................................................................ 21

9.9.

Pegasus F2Pegasus F2

Pegasus F2

Pegasus F2Pegasus F2

2

1. GENERAL TECHNICAL DATA1. GENERAL TECHNICAL DATA

1. GENERAL TECHNICAL DATA

1. GENERAL TECHNICAL DATA1. GENERAL TECHNICAL DATA

1.011.01

IntroductionIntroduction

1.01

Introduction

1.011.01

IntroductionIntroduction

Pegasus F2Pegasus F2

The

Pegasus F2, with CE approval, is designed for use with natural gas (G20) or LPG (G31) for indirect

Pegasus F2Pegasus F2

central heating and hot water.

1.021.02

Installation requirementsInstallation requirements

1.02

Installation requirements

1.021.02

Installation requirementsInstallation requirements

Only CORGI registered installers should fit the Pegasus boilers.
The boiler installation should comply with relevant British Standards Specifications, codes of practice,
and Current Building Regulations, together with any special Regional Requirements of the Local
Authorities, gas supplier and Insurance Companies.

2. DIMENSIONS AND TECHNICAL DATA2. DIMENSIONS AND TECHNICAL DATA

2. DIMENSIONS AND TECHNICAL DATA

2. DIMENSIONS AND TECHNICAL DATA2. DIMENSIONS AND TECHNICAL DATA

2.012.01

Dimensional data (see fig. 1 and table 2)Dimensional data (see fig. 1 and table 2)

2.01

Dimensional data (see fig. 1 and table 2)

2.012.01

Dimensional data (see fig. 1 and table 2)Dimensional data (see fig. 1 and table 2)

A

1000

a1a1

a1 - Return 1" 1/2

a1a1
a2a2

a2 - flow 1" 1/2

a2a2
a3a3

a3 - Gas inlet 3/4"

a3a3

B

900

D

762

672

222

C

a3

a2

E

a1

Fig. 1

Pegasus F2Pegasus F2

Pegasus F2

Pegasus F2Pegasus F2

3

2.022.02

Technical dataTechnical data

2.02

Technical data

2.022.02

Technical dataTechnical data

The standard cast-iron

PEGASUS F2PEGASUS F2

PEGASUS F2 boiler is set to operate on natural gas (G20).

PEGASUS F2PEGASUS F2

The boiler is designed to operate with a flow temperature of 82°C and a maximum ∆t of 20°C.

Pegasus F2 51

Pegasus F2 68

Table 1

Pegasus F2 85

Pegasus F2 102

Pegasus F2 51

Pegasus F2 68

Table 2

Pegasus F2 85

Pegasus F2 102

Pegasus F2 51

Pegasus F2 68

Table 3

Pegasus F2 85

Pegasus F2 102

MODEL

MODEL

MODEL

A

mm

550

640

720

800

No.

OF MAIN

BURNERS

3

4

5

6

C

2,15

2,15

2,15

2,15

HEAT

OUTPUT

D

mm

43

46

44

42

INJECTORS

Nat. G20

0,4

0,4

0,4

0,4

kW

102

51

68

85

PILOT

Ø mm

mm

E

35

38

36

34

RETURN

G.P.L. G31

0,24

0,24

0,24

0,24

NUMBER OF

SECTIONS

4

5

6

7

DIMENSIONS CONNECTIONS

B

mm

Ø mm

96,5

180

96,5

180

106,5

200

106,5

200

PRINCIPALES

INJECTORS

Ø mm

G.P.L. G31

Nat. G20

3,5

3,5

3,5

3,5

a1 Ø

1 1/2"

1 1/2"

1 1/2"

1 1/2"

FLOW

a2 Ø

1 1/2"

1 1/2"

1 1/2"

1 1/2"

GAS SUPPLY

PRESSURE

(mbars)

Nat. G20

15 to 23

15 to 23

15 to 23

15 to 23

HEAT INPUT

(NETT)

kW

56

74,8

93,5

112

GAS
a3 Ø

3/4"

3/4"

3/4"

3/4"

LPG G31

37

37

37

37

WEIGHT

INCLUDING

PACKAGE

GAS PRESS. AT

BURNER MANIFOLD

Nat. G20

13,3

13,3

13,3

13,3

CONTENT

Kg.

260

300

350

400

(mbars)

LPG G31

36

36

36

36

HEAT INPUT

(GROSS)

kW

62,2

83

103,8

124,3

WATER

(liter)

22

26

30

34

GAS FLOW RATE

Nat. G20

m

5,9

7,9

9,9

11,8

MAX

OPERATING

PRESSURE

(bars)

3

/h

4

4

4

4

LPG G31

kg/h

4,34

5,79

7,24

8,68

Pegasus F2Pegasus F2

Pegasus F2

Pegasus F2Pegasus F2

4

2.032.03

Main componentsMain components

2.03

Main components

2.032.03

Main componentsMain components

816

75

14

1 2

4

6 3

10

15
11

13

Front view of the boiler without front casing Front view of the boiler without front casing

Front view of the boiler without front casing

Front view of the boiler without front casing Front view of the boiler without front casing

Fig. 2a

5

9

12

KeyKey

Key

KeyKey

11

1 Temperature-pressure gauge

11
22

2 Boiler control thermostat

22
33

3 Ignition lockout re-set botton

33
44

4 Boiler on/off switch

44
55

5 Flue gas safety thermostat

55
66

6 Limit thermostat reset botton

66
77

7 Ignition PCB

77
88

8 Electronic panel (not available UK)

88

6

4

2

1

Control panel Control panel

Control panel

Control panel Control panel

Fig. 2b

99

9 Control panel

99

1010

10 Gas valve

1010
1111

11 Pilot burner assembly

1111
1212

12 Gas burner manifold

1212
1313

13 Gas pressure test point

1313
1414

14 Automatic air vent

1414
1515

15 Drain cock

1515
1616

16 Flue gas sampling point

1616

Pegasus F2Pegasus F2

Pegasus F2

Pegasus F2Pegasus F2

9

8

7

3

5

2.042.04

Characteristic pressure drop curveCharacteristic pressure drop curve

2.04

Characteristic pressure drop curve

2.042.04

Characteristic pressure drop curveCharacteristic pressure drop curve

Water pressure drop in all models is shown in fig.

3. The following diagram shows the pressure drop
in the boiler as a function of the water flow rate.

∆P mbar

200

100

90
80

70

60

50

40

30

20

4 EL.

5 EL.

6 EL.

7 EL.

Fig. 3

2.052.05

Safe discharge of combustion productsSafe discharge of combustion products

2.05

Safe discharge of combustion products

2.052.05

Safe discharge of combustion productsSafe discharge of combustion products

10

12345678910

Flow rate

The boiler comes with a FLUE GAS SAFETY THERMOSTAT, which provides a high level of safety and
control over the discharge of combustion products. This thermostat cuts off the supply of gas to the
burner in the event of a faulty flue draft.

If the FLUE GAS SAFETY THERMOSTAT has been activated, you should unscrew the protection cover
(part no. 5 in fig. 2a and 2b) and manually
“reset” the thermostat. After that, the boiler
will return to normal operation.

Boiler rear viewBoiler rear view

Boiler rear view

Boiler rear viewBoiler rear view

If the FLUE GAS SAFETY THERMOSTAT
needs to be replaced, use original
manufacturer’s parts only and make sure
the electric connections and positioning of
the bulb (see fig. 4) are correct; NEVER
UNDER ANY CIRCUMSTANCES LEAVE
THE FLUE GAS SAFETY THERMOSTAT
DISCONNECTED FROM THE ELECTRIC
CIRCUIT.

In case of frequent tripping of the thermo­static switch, contact qualified personnel
only.

During cleaning of the draft diverter, be
careful not to damage the thermostat phial.

Flue gas safety
thermostat phial

Fig. 4

Pegasus F2Pegasus F2

Pegasus F2

Pegasus F2Pegasus F2

6

3. BOILER INSTALLATION3. BOILER INSTALLATION

3. BOILER INSTALLATION

3. BOILER INSTALLATION3. BOILER INSTALLATION
(To be performed by qualified personnel only)

3.013.01

General warningsGeneral warnings

3.01

General warnings

3.013.01

General warningsGeneral warnings

The boiler should be installed according to current regulations (see para 1.02).
We suggest fitting isolating valves between the boiler and the heating system to isolate the boiler from

the system if necessary.
The rise in temperature of the heating water (the difference between the water flow and return

temperatures) should not exceed 20°C. This is so as to prevent possible damage caused by
condensation forming in the boiler.

Combustion products should be discharged through a flue with a cross section in accordance with
current standards and not less than the boiler flue outlet connection.

Connect the gas to the boiler in accordance with current regulations. The diameter of the boiler gas
inlet gas pipe does not dictate the choice of diameter for the pipe between the boiler and the gas meter
should be calculated based upon its length and pressure drop.

3.023.02

Boiler water characteristicsBoiler water characteristics

3.02

Boiler water characteristics

3.023.02

Boiler water characteristicsBoiler water characteristics

When the water supply has a hardness of more than 25 - 30 Fr., it should be treated before entering
the heating system to prevent both scaling (caused by hard water) and corrosion (caused by aggressive
water) in the boiler. Please remember that because of their low thermal conductivity, even small scales
just a few millimetres thick cause the boiler walls to overheat considerably with serious consequences.

You must treat the water used for the heating system in the following cases:You must treat the water used for the heating system in the following cases:

You must treat the water used for the heating system in the following cases:

You must treat the water used for the heating system in the following cases:You must treat the water used for the heating system in the following cases:
A) Very large systems (with large volumes of water).A) Very large systems (with large volumes of water).

A) Very large systems (with large volumes of water).

A) Very large systems (with large volumes of water).A) Very large systems (with large volumes of water).
B) Systems where partial or complete draining - and water refilling - are frequent.B) Systems where partial or complete draining - and water refilling - are frequent.

B) Systems where partial or complete draining - and water refilling - are frequent.

B) Systems where partial or complete draining - and water refilling - are frequent.B) Systems where partial or complete draining - and water refilling - are frequent.

Pegasus F2Pegasus F2

Pegasus F2

Pegasus F2Pegasus F2

7

4. WIRING AND CONNECTION DIAGRAMS4. WIRING AND CONNECTION DIAGRAMS

4. WIRING AND CONNECTION DIAGRAMS

4. WIRING AND CONNECTION DIAGRAMS4. WIRING AND CONNECTION DIAGRAMS

4.014.01

Electrical connectionsElectrical connections

4.01

Electrical connections

4.014.01

Electrical connectionsElectrical connections

- Electrical connections should be performed according to the diagrams shown here.

- Connect the boiler to a single-phase, phase neutral, 230 V ~ 50 Hz power supply through a standard

terminal block or outlet with 2A max. fuses connected between the boiler and the power support.
Remember that the boiler should always be provided with good earthing.

IMPORTANT:IMPORTANT:

IMPORTANT: If on use a 230 V room thermostat, it must be in II class.

IMPORTANT:IMPORTANT:

The manufacturer disclaims any liability for damage to property or persons caused by
failure to earth the boiler correctly.

General wiring diagram for mod. 51-68-85General wiring diagram for mod. 51-68-85

General wiring diagram for mod. 51-68-85

General wiring diagram for mod. 51-68-85General wiring diagram for mod. 51-68-85

230V
50Hz

L

1

4

5

2

N

3

31

1

42

2

169

3

4

16

32

6

18

17

98

L1

N1

7

129

3

4

1

2

253713

1

83

616

19

S 4561 B
HONEYWELL

118

117

21

8

114

9

10

11

12
13

2

14

20

116

160

72

C

63
1
14

49

15

92

24

X6

9

X5
X4

17

X3

22

82

25

Fig. 5a

KeyKey

Key

KeyKey

116116

116 Gas pressure switch

2424

24 Spark electrode

2424
2525

25 Pilot burner

2525
3232

32 Pump (not supplied)

3232
4949

49 Limit thermostat (manual reset)

4949
6363

63 Boiler control thermostat

6363
7272

72 Room thermostat

7272

Note:Note:

Note:

Note:Note:

8282

82 Ionization probe

8282
8383

83 Ignition PCB

8383
9292

92 Flue gas thermostat

9292
9898

98 Boiler on/off switch

9898

114114

114 Water flow pressure switch

114114

(not supplied)

116116
117117

117 Main gas valve

117117
118118

118 Pilot light gas valve

118118
129129

129 Ignition lockout re-set botton

129129
160160

160 Auxiliary contact

160160
169169

169 Suppression filter

169169

• Dotted lines indicate connections to be performed during installation.

• Terminals L1, N1, 6 are reserved for connecting an electronic compensator (not available in UK)

Pegasus F2Pegasus F2

Pegasus F2

Pegasus F2Pegasus F2

8