Alpha Alpha CD25C Bedienungsanleitung

Supplementary LPG Boiler

Instructions

Alpha CD25C/28C/35C

Wall Mounted, Fan Assisted, Room Sealed, Gas Fired

High Efficiency Condensing Boilers

Alpha CD25C British Gas G.C. No. 47 532 32

Alpha CD28C British Gas G.C. No. 47 532 34

Alpha CD35C British Gas G.C. No. 47 532 36

British Gas

Service Listed

For use with LPG (Propane) only

Leave these instructions with the User

0051

Nepicar House, London Road,

Wrotham Heath, Sevenoaks,

Kent TN15 7RS

For Technical help or for Service call ...

ALPHA HELPLINE Tel: 0870 3001964

website:www.alpha-innovation.co.uk

2CD25C/28C/35C LPG Supplement

37.0

14.8

11.4

2.5

13.3

2.9

37.0

14.8

37.0

14.8

9.6

2.2

11.2

2.5

1 INTRODUCTION

This supplement is for the LPG model of the boiler; it must be read in conjunction with the 'Installation and Servicing

Instructions' supplied with the boiler and provides the extra information which is particular to LPG.

The Alpha CD25C, CD28C and CD35C are combination boilers providing both central heating and domestic hot water at

mains pressure.

The boilers are designed for use with a fully pumped, sealed and pressurised heating system using only PROPANE gas.

2 TECHNICALDATA

PERFORMANCE - PROPANE GAS (CAT I3P 3P - G31 - 37 mbar)

Alpha CD28C Alpha CD28C

MAX.

27.1

92 400

24.4

83 250

25.9

88 400

24.0

81 900

7.27

2.9

1.04

36.7

MIN.

7.3

24 900

6.6

22 500

6.9

23 500

6.3

21 500

0.64

0.26

0.28

9.8

Room sealed

chamber panel

fitted

Central Heating

Heat Input (Hs)kW

(Gross) Btu/h

Heat Input (Hi)kW

(Net) Btu/h

Heat Output (Hs condensing) kW

(50°C/30°C) Btu/h

Heat Output (Hinon-condensing) kW

(80°C/60°C) Btu/h

Differential Burner mbar

Pressure in wg

Gas Supply Pressure (LPG) mbar

in wg

Gas Rate (LPG) m³/h

ft³/h

MAX.

31.6

107 900

28.5

97 200

28.7

97 900

9.06

3.62

1.21

42.7

MIN.

7.3

24 900

6.6

22 500

6.3

21 500

0.64

0.26

0.28

9.8

Domestic Hot Water

Heat Input (Hs)kW

(Gross) Btu/h

Heat Input (Hi)kW

(Net) Btu/h

Output to Water (Hs)kW

(modulating) Btu/h

Differential Burner mbar

Pressure in wg

Gas Supply Pressure (LPG) mbar

in wg

Gas Rate (LPG) m³/h

ft³/h

Flow Rate at 35°C Rise L/min

gal/min

Specific Flow Rate (D) at 30°C Rise L/min

(Flow rate @ 30K to EN625) gal/min

Room sealed

chamber panel

fitted

37.0

14.8

Alpah CD25C

MAX.

20.4

69 600

18.4

62 780

19.5

66 550

18.0

61 420

3.15

1.26

0.78

27.6

MIN.

6.4

21 800

5.8

19 780

6.1

20 820

5.5

18 780

0.4

0.16

0.24

8.5

Room sealed

chamber panel

fitted

Central Heating

Heat Input (Hs)kW

(Gross) Btu/h

Heat Input (Hi)kW

(Net) Btu/h

Heat Output (Hs condensing) kW

(50°C/30°C) Btu/h

Heat Output (Hinon-condensing) kW

(80°C/60°C) Btu/h

Differential Burner mbar

Pressure in wg

Gas Supply Pressure (LPG) mbar

in wg

Gas Rate (LPG) m³/h

ft³/h

Alpha CD25C

MAX.

26.7

91 100

24.1

82 200

24.3

84 800

6.10

2.44

1.02

MIN.

6.4

21 960

5.8

19 780

5.5

18 780

0.40

0.16

0.24

8.5

Domestic Hot Water

Heat Input (Hs)kW

(Gross) Btu/h

Heat Input (Hi)kW

(Net) Btu/h

Output to Water (Hs)kW

(modulating) Btu/h

Differential Burner mbar

Pressure in wg

Gas Supply Pressure (LPG) mbar

in wg

Gas Rate (LPG) m³/h

ft³/h

Flow Rate at 35°C Rise L/min

gal/min

Specific Flow Rate (D) at 30°C Rise L/min

(Flow rate @ 30K to EN625) gal/min

Room sealed

chamber panel

fitted

CD25C/28C/35C LPG Supplement

37.0

14.8

3 BOILER LOCATION

Installation pipes, cylinders and pressure regulators should be fitted in accordance with BS 5482:1. Bulk tank installation must

comply with the requirements of the Home Office code of practice for the storage of liquefied petroleum gas at fixed installations.

The boiler must not be installed in a room or internal space below ground level, e.g. in a basement or cellar, except where at

least one side is open to ground level.

4 INSTALLATION

In addition to the regulations and requirements stated in the Installation and Servicing instructions, the boiler must be installed

in accordance with BS 5482:1 - The Installation of Propane Burning Appliances in Permanent Dwellings.

2.3 GAS SUPPLY

The Alpha CD25C boiler requires a gas rate of 1.87 kg/h (4.0 lb/h) or 3.6 litres/h of liquid gas.

The Alpha CD28C boiler requires a gas rate of 2.22 kg/h (4.8 lb/h) or 4.2 litres/h of liquid gas.

The Alpha CD35C boiler requires a gas rate of 2.67 kg/h (5.7 lb/h) or 5.0 litres/h of liquid gas.

The supply pipes must be capable of delivering this quantity of gas in addition to the demand from any other appliances in the

house. The boilers require at least a 22 mm gas supply pipe.

The complete installation must be tested for gas soundness against leakage.

The local Propane gas supplier should be consulted, at the installation planning stage, in order to establish the availability of an

adequate supply of gas.

37.0

14.8

14.2

3.13

15.6

3.44

Alpha CD35C

MAX.

38.0

129 600

34.3

117 000

34.6

118 100

3.43

1.37

1.46

51.5

MIN.

8.9

30 600

8.1

27 600

8.0

27 300

0.23

0.09

0.34

12.0

Domestic Hot Water

Heat Input (Hs)kW

(Gross) Btu/h

Heat Input (Hi)kW

(Net) Btu/h

Output to Water (Hs)kW

(modulating) Btu/h

Differential Burner mbar

Pressure in wg

Gas Supply Pressure (LPG) mbar

in wg

Gas Rate (LPG) m³/h

ft³/h

Flow Rate at 35°C Rise L/min

gal/min

Specific Flow Rate (D) at 30°C Rise L/min

(Flow rate @ 30K to EN625) gal/min

Room sealed

chamber

panel fitted

Alpha CD35C

MAX.

31.6

107 800

28.5

97 200

30.3

103 400

28.0

95 550

2.49

1.0

1.21

42.7

MIN.

8.9

30 600

8.1

27 600

8.5

29 000

7.8

26 600

0.23

0.09

0.34

12.0

Room sealed

chamber panel

fitted

Central Heating

Heat Input (Hs)kW

(Gross) Btu/h

Heat Input (Hi)kW

(Net) Btu/h

Heat Output (Hs condensing) kW

(50°C/30°C) Btu/h

Heat Output (Hinon-condensing) kW

(80°C/60°C) Btu/h

Differential Burner mbar

Pressure in wg

Gas Supply Pressure (LPG) mbar

in wg

Gas Rate (LPG) m³/h

ft³/h

%CO2content (± 0.2%) Sedbuk rating

LPG (propane) Efficiency

band

SAP efficiency

(%)

91.9

91.6

92.4

Min

10.0

10.1

9.1

CH Max

10.7

10.6

10.7

DHW max

10.6

10.8

NOx class

Boiler model

CD25C

CD28C

CD35C

DETAILS OF BOILER INSTALLATION

Date of Installation: ......................................................................

Name of Installer: ........................................................................

Address: ......................................................................................

....................................................................................................

Postcode: ....................................................................................

Telephone No: .............................................................................

Boiler Serial Number: (LPG) ........................................................

(see inside controls panel hinged cover)

Leaflet compiled and designed by Publications 2000 - Tel: (01670) 356211 11/08/D232

Part No. 1.024987

These instructions have been carefully prepared but we reserve the right to

alter the specification at any time in the interest of product improvement.

6 PARTS LIST

Only the main burner injectors are special to Propane boilers. For other 'Short List Spare Parts', refer to the Installation and

Servicing instructions supplied with the boiler.

Propane components

Main burner injector - CD25C and 28C

Main burner injector - CD35C

Qty.

Type

4.0 mm

5.4 mm

Alpha Part No.

1.022509

1.024388

7 SERVICING

When servicing or replacing boiler components follow the procedures as described in the main Installation and Servicing

instructions supplied with the boiler.

Remembering the parts special for Propane boilers and the burner pressures special to Propane boilers given in this leaflet.

Alpha Therm Limited.

NepicarHouse,LondonRoad,WrothamHeath,

Sevenoaks, Kent TN15 7RS

Tel: 0870 3001964

email: [email protected]

website: www.alpha-innovation.co.uk

5 COMMISSIONING

The boiler has been tested and factory set for use with Propane gas and it should only be necessary to ensure the correct gas

supply pressure of 37 mbar is available.

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