REMEHA Gas 550, Gas 550 Duo Technical Information

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Technical information

Remeha Gas 550/550 Duo

Remeha Gas 550/550 Duo

• Atmospheric gas boiler

• 278 - 1058 kW

1

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TABLE OF CONTENT

Remeha Gas

550/550 Duo

Preface 3

1 Boiler description 3

2 Construction details 3

2.1 General 3

2.2 Burners 3

2.3 Assembly 3

3 dimensions and Technical data 4

3.1 Dimensions Remeha Gas 550 4

3.2 Dimensions Remeha Gas 550 Duo 6

4 Application information 7

4.1 L.P.H.W. system 7

4.1.1 Water temperature 7

4.1.2 Water pressure 7

4.1.3 Water flow 7

4.1.4 Water treatment 7

4.1.5 Noise level 8

4.2 Chimneys 8

4.3 Installation standards 8

5 Typical boiler installations 9

5.1 Installation 1 9

5.2 Installation 2 10

8 Gas supply 13

8.1 General 13

8.2 Gas pressure 13

8.3 Injectors 13

9 Electrical supply 14

9.1 General 14

9.2 Instrument panel 14

9.3 Control panel 14

9.4 Electrical connections 14

9.5 Electrical information 14

9.6 Water level control 14

9.7 Wiring diagrams 15

10 Commissioning 16

10.1 Switching off the boiler 18

11 Maintenance 18

12 Trouble shooting 19

12.1 Fault causes 19

6 Control and safety equipment 11

6.1 General 11

6.2 Instrument panel 11

6.3 Standard electronic gas train High/Low 11

6.3.1 Schematic 11

6.3.2 Control panel on gas train 11

6.3.3 Specification control box 11

6.3.4 Specification Ignition transformer 12

6.4 Functions 12

6.4.1 Flame control (lock out) 12

6.4.2 Thermostats (shutdown / lock out) 12

6.4.3 Water level control (lock out) 12

6.4.4 Valve leakage control - optional
( lock out) 12

6.4.5 Gas pressure switch LD - optional
(shut down) 12

6.4.6 Gas pressure switch HD - optional
(lock out) 12

6.4.7 Down draft thermostat;
(optional, shut down) 12

7 Assembly and installation guidelines 13

7.1 General 13

7.2 Boiler assembly 13

7.3 Water connections 13

7.4 Pocket for the thermostat capillaries 13

7.5 Water pressure 13

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PREFACE

These technical instructions contain useful and impor­tant information for the correct operation and maintenan­ce of the Remeha boiler, model Gas 550 and Gas 550
Duo.

Read these instructions carefully before putting the boi­ler into operation, familiarise yourself with it’s control
functions and operation, strictly observing the instructi­ons given. Failure to do so may invalidate warranty or
prevent the boiler from operating.

The installation and commissioning of the boiler must be
carried out by a competent Engineer, with the relevant
certification i.e.: CORGI, ACOPS, IEE regs. etc.
On completion a copy of the boiler log / commissioning
sheet should be returned to Broag Ltd for record purpo­ses.

1 BOILER DESCRIPTION

The Remeha Gas 550 series boiler is a cast iron
sectional boiler, with a powder coated enamel steel
casing compleet with glass fibre insulation.It has high /
low atmospheric gas burners, suitable for natural gas,
cat. I

- 20 mbar.

2 H

It is supplied in sections for delivery and on site assem­bly.

If you have any questions, or if you need more informa­tion about specific subjects relating to this boiler, or it’s
installation please do not hesitate to contact us.
The data published in these technical instructions is
based on the latest information (at date of publication)
and may be subject to revisions.
We reserve the right to continuous development in both
design and manufacture, therefore any changes to the
technology employed may not be retrospective nor may
we be obliged to adjust earlier supplies accordingly.

Remeha Gas 550 (Duo)-reference number: 0063AP6520

Classification type for evacuation of the combustion pro­ducts, according: EN-656: B11, B11BS.

For further advice or information contact Broag Ltd.

The boiler meets the requirements of the CE regulations
at the following directives:

- Gas appliance directive no. 90/396/EEC;

- Efficiency directive no. 92/42/EEC;

- E.M.C. directive no. 89/336/EEC.
And is correspondent with:

- Electrical low voltage directive no. 73/23/EEC.

2 CONSTRUCTION DETAILS

2.1 General

The Remeha Gas 550 / 550 Duo is a floor standing
boiler complete with temperature and safety controls.
The cast iron sectional heat exchanger is assembled
using conical nipples and jointing compound.The boiler
has a built in draft diverter. It has water connections at
the side within the casing dimensions and a gas train
to one side.

Note: Both water and gas connections can be handed
on site during assembly. But the instrument panel,
mounted in the front casing should always be fitted on
the same side as the flow connection.
The casings can be fitted after the flue and pipework to
the boiler have been installed and connected.

2.2 Burners

The burners are stainless steel, atmospheric type with a
heat reflecting floor plate providing the correct ventilation
distribution. Front and top access is required for service
work to be carried out.

Note: The Gas 550 Duo has two complete boiler units
within one casing using a common flue connection.

2.3 Assembly

The boiler cannot be supplied pre-assembled and must
be assembled on site.

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3 DIMENSIONS AND TECHNICAL DATA

3.1 Dimensions Remeha Gas 550

Remeha Gas

550/550 Duo

Fig. 01 Dimensions Remeha Gas 550

00.05F.79.00002

Flow Ø107 int.

Return Ø107 int.

Gas 2"

Flue gas Ø

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Number of sections 10 12 14 16 18 20 22

Nominal heat
output

Hi /

Nominal
heat input

NCV

Hs /

GCV

Gas consumption

Ø D mm 300* 350* 400* 450 450* 500 500*

Dimensions

Flue temperature

t =

∆

Water
resistance

10°C

t =

∆

20°C

kW 139-278 170-340 202-403 233-466 265-529 296-592 328-656

kW 160-309 195-378 232-448 266-518 301-588 337-657 372-728

kW 177-343 217-420 256-498 296-576 335-653 374-730 414-809

3

m

/h 33 40 47 55 62 70 77

B mm 1240 1460 1680 1900 2120 2340 2560

E mm 1295 1295 1295 1295 1295 1295 1245

H mm 1730 1730 1730 1610 1730 1610 1730

°C 154 152 146 138 138 142 142

mbar 64 72 80 128 160 180 196

mbar 16 18 20 32 40 45 49

Water contents

Boiler weight (dry)

Flue gas flow rate

litre 291 349 407 465 523 581 639

kg 1450 1695 1940 2185 2430 2675 2920

kg/h 692 847 1033 1239 1376 1560 1678

Table 01 Technical data Remeha Gas 550
* Supplied with a flue gas pipe adapter

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3.2 Dimensions Remeha Gas 550 Duo

Remeha Gas

550/550 Duo

Fig. 02 Dimensions Remeha Gas 550 Duo

00.05F.79.00003

Flow Ø107 int.

Return Ø107 int.

Gas 2"

Flue gas Ø

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