Remeha P520 Technical Information

Remeha

Fuel oil/gas boilers

P 520

Installation and Service Manual

300016859-001-A

63115

Declaration of conformity 1

The appliance complies with the standard model described in declaration of compliance 1. It is manufactured and distributed pursuant to the requirements of European Directives. The original of the declaration of compliance is available from the manufacturer.

C001878

P 520 02/04/08 - 300016859-001-A

Contents

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

2.1 Technical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

2.2 Main dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

3 Installing the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.1 Boiler location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

3.2 Ventilation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

4 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

5 Hydraulic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5.1 Dimensional information required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5.2 Important recommendations for connecting the boiler to the heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

5.3 Filling the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

5.4 Sludge removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

6 Chimney connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

6.1 Flue size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

6.2 Chimney connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

7 Fuel-oil or gas connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

8 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

9 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

9.1 Sweeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

9.2 Cleaning the casing material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

9.3 Precautions required in the case of long boiler stops (one or more years) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

9.4 Precautions required if the heating is stopped when there is a risk of freezing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

10 Burner maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

11 System maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

11.1 Water level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

11.2 Draining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

12 Rating plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

13 Spare parts - P 520 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

02/04/08 - 300016859-001-A P 520

1 General

This product will be marketed in the following European Union member states :

NL - BE - ES - GB - HU - SE

with a gas burner of the associated category.



Symbols used





Caution danger

Specific information Information must be kept in mind to maintain comfort

Reference Refer to another manual or other pages in this instruction manual

Warning



The boiler shall be assembled and installed by a qualified professional only.

For a proper operating of the boiler, follow carefully the instructions.

Risk of injury and damage to equipment. Attention must be paid to the warnings on

safety of persons and equipment

P 520 02/04/08 - 300016859-001-A

2 Description

The boilers of the P 520 range are pressurised hot water boilers designed for connecting to a flue pipe which require a separate automatic fuel-oil or gas burner.

The useful power of P 520 boilers is between 754 and 1450 kW.

Models available

Boiler with control panel, which may be fitted with an optional Rematic 2945 C3K control unit for heating only or heating and domestic hot water production.

02/04/08 - 300016859-001-A P 520

2.1 Technical characteristics

Maximum operating pressure : 7.5 bar

Boiler thermostat setting : 30 to 90°C

Safety thermostat setting : 110 °C

Boiler P 520-13 P 520-15 P 520-17 P 520-19 P 520-21 P 520-23 P 520-25

Useful output kW 696 to 754 812 to 870 928 to 986

Power input kW 773 to 838 902 to 967

Number of sections 13 15 17 19 21 23 25

Water content l 617 693 769 845 943 1019 1095

∆ T = 10K

Water resistance

Pressure in the furnace for nozzle pressure = 0

Flue gas temperature

Mass flue gas flow

(1) (2)

rate

Combustion chamber

Maintenance consumption*

Shipping weight kg 3000 3364 3756 4124 4538 4930 5297

∆ T = 15K 25.8 34.7 13.5 18.5 24 29 35

∆ T = 20K 14.4 19.4 7.6 10.4 13.4 16.2 19.6

(1) (3)

Fuel oil

Gas 1120 1280 1440 1590 1750 1910 2070

Inscribed diameter mm 614 614 614 614 614 614 614

Equivalent diameter mm 694 694 694 694 694 694 694

Depth mm 1372 1594 1816 2038 2300 2522 2744

Volume

∆ T = 30K % 0.08 0.07 0.07 0.07 0.06 0.06 0.06

mbar

mbar 2.2 2.4 2.6 2.85 3.1 3.3 3.5

K <190 <190 <190 <190 <190 <190 <190

Kg/h

57.6 77.6 30.2 41.4 53.6 64.8 78.4

1070 1220 1370 1520 1670 1820 1970

0.53 0.61 0.70 0.78 0.88 0.96 1.05

1031 to 1096

1044 to 1102

1160 to 1224

1160 to 1218

1289 to 1353

1276 to 1334

1418 to 1482

1392 to 1450

1547 to 1611

*Maintenance consumption: total heat emission when the burner is off as a percentage of the nominal input power when the difference between the mean boiler temperature and the room temperature is 30 K.

(1)

Nominal operation (top boiler power)

)

CO2 = 13.1 to 13.5% with fuel oil and 9.5% with natural gas.

(3)

Boiler temperature : 80 °C

Ambient temperature : 20 °C

P 520 02/04/08 - 300016859-001-A

2.2 Main dimensions

P 520

755

616

1566

420

M000032

1172

Minimum height for sweeping = 850

370

496

543

Ø E

1080

200

815

Ø F

223

100

300

Ø E

Burner centre line

741

718

B LG

370

Flowrate detector

Boiler P 520 P 520-13 P 520-15 P 520-17 P 520-19 P 520-21 P 520-23 P 520-25

A (mm) 1563 1785 2007 2229 2491 2713 2935

B (mm) 1522 1744 1966 2188 2450 2672 2894

C (mm) 1488 1488 1488 1504 1504 1504 1504

D (mm) 256 188 210 257 209 231 253

Ø E (weld) (mm) 139.7 139.7 139.7 159 159 159 159

Ø F (mm) 350 400 400 400 * * *

G (mm) - 150 370 370 650 980 980

H (mm) 37 -31 -9 13 -35 -13 9

K** (mm) 49 -19 3 25 -23 -1 21

L (mm) 1955 2245 2445 2645 2955 3155 3355

M (mm) 275 324 321 299 324 324 303

P (mm) K 355 355 355 355 355 355 355

R (mm) K 175 175 175 175 175 175 175

S (mm) K 1760 1760 1760 1760 1760 1760 1760

T (mm) 1372 1594 1816 2038 2300 2522 2744

U (mm) 2021.5 2243.5 2465.5 2687.5 2949.5 3171.5 3393.5

17,5

240

140

791

* Plain plate, requires cutting. Maximum cut-out 500 x 700.

** Dimension representing the end of the 100 mm long chimney

connection.

G = Length required for clearing the water distributing tube.

Nota : with models P 520-21, P 520-23 and P 520-25, a plain plate which must be cut out is supplied without the 100 mm chimney connection.

02/04/08 - 300016859-001-A P 520

 Main dimensions - Rear view P 520

500

Max

565

700 max

3/4"

610

M000158

P 520 02/04/08 - 300016859-001-A

3 Installing the boiler

3.1 Boiler location

For the assembly and because of their design, P 520 boilers require no special base. Their closed furnace system means that the floor need not have refractory properties. All you have to ensure is that the floor can support the weight of the boiler when it is fitted for operation. If the boiler location is not determined precisely, leave enough space around the boiler to facilitate monitoring and maintenance operations.

Boiler body * Straight connection (not supplied) *

* 1) In order to facilitate subsequent work on the boiler(replacing the water distributing tube etc.) use a flanged connection from the boiler to the system, making sure you comply with minimum clearance dimension D.

Angled connection (not supplied) Air inlet Air outlet

P 520 P 520-13 P 520-15 P 520-17 P 520-19 P 520-21 P 520-23 P 520-25

L 1955 2245 2445 2645 2955 3155 3355

M 275 324 321 299 324 324 303

C min. 300 436 656 656 936 1266 1266

D min. - 136 356 356 636 966 966

If A = 1.2 m (door opening side), A’ = 0.5 m

If A = 0.5 m, A’ = 1.2 m (door opening side) : adapt the dimensions on the basis of the dimensions of the burner when the door is open.

B = 1.5 m : adapt the dimensions on the basis of the dimensions of the burner.

02/04/08 - 300016859-001-A P 520

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