Saunier Duval ECOSY 24 E Manuel utilisateur

ECOSY

Heating and hot water for the professionals

ECOSY 24 E, ECOSY 5B 24 E is CAT

II2H3+ appliances

ECOSY 28 E, ECOSY 5B 28 E is CAT

I2H appliances

01773 828100

IN WARRANTY

TECHNICAL HELPLINE

01773 828400

INSTALLATION AND OPERATING INSTRUCTIONS

ECOSY 24 E, ECOSY SB 24 E

ECOSY 28 E, ECOSY SB 28 E

Note!

The boiler serial number is marked on the label attached to the top of the inner bulkhead. Refer to

the 'Introduction' section page 3 for a description of the basic functions of the boiler. The 'Users'

section describes how to safely operate the boiler.

INSTALLATION SECTION

Introduction .................................................. Page 3

Commissioning ....................................................... 3

Controls & lighting ............................................ 4 - 6

Draining................................................................... 7

Servicing/maintenance ........................................ 7

Introduction ................................................. Page 3

Technical data ...................................................... 8

Dimensions ............................................................. 9

Boiler schematic ................................................... 9

Connections plate.............................................. 10

Piping system installation ................................... 10

Heating system design ....................................... 11

Domestic hot water system design .................. 12

Boiler location ..................................................... 12

Boiler installation ................................................. 13

Flue installation ............................................. 14 - 15

Electrical installation ........................................... 16

Commissioning .................................................... 17

Operating safety devices .................................. 18

Settings ................................................................. 19

Changing gas type ............................................ 20

USERS SECTION

Mandatory warning for CEE countries

Warning: This appliance is designed, approved and inspected to meet the requirements of the

English market. The identification plate located on the inside of the appliance certifies the origin

where the product was manufactured and the country for which it is intended.

If you see any exception to this rule, please contact your nearest Saunier Duval dealer.

Thank you in advance for your assistance.

INTRODUCTION

The ECOSY 24 E and ECOSY 28 E boilers are wall

mounted combination boilers providing central

heating and instantaneous hot water.

The ECOSY SB 24 E and ECOSY SB 28 E boilers are

wall mounted system boiler providing central

heating only.

The ECOSY 24 E and ECOSY SB 24 E boilers are of the

II2H3+ category for use with Natural Gas (G20) and

Liquide gas (G30 and G31)as distributed in the

United Kingdom.

The ECOSY 28 E and ECOSY SB 28 E boilers are of the

I2H category for use with Natural Gas (G20) as

distributed in the United Kingdom.

The boilers have a fan assisted balanced flue which

both discharges the products of combustion to and

draws the combustion air from the outside of the

room.

The boilers are suitable for top outlet flue connection

only but, can be fitted with horizontal flue, vertical

flue or twin-pipe flue. Refer to flue catalogue for

further details.

On ECOSY 24 E and ECOSY 28 E, both the central

heating and domestic hot water temperature are

user adjustable from the boiler control panel.

On ECOSY SB 24 E and ECOSY SB 28 E, the central

heating temperature is user adjustable from the

boiler control panel.

On the ECOSY 24 E and ECOSY 28 E, domestic hot

water demand always has priority over heating

demand.

The boiler is designed for use as part of a sealed

water central heating system with fully pumped

circulation. The pump, expansion vessel and

associated safety devices are all fitted within the

boiler.

The boiler can be installed against either an external

wall or on an adjacent inside wall, that is, the flue

system will pass directly to the rear or to either side

to the terminal fitted on the outside wall face.

The installation must be carried out by a competent

person in accordance with the relevant

requirements of The Building Regulations, The Water

Byelaws, The Building Standards (Scotland)

Regulations and any applicable local regulations.

These instructions should be carefully followed for

the safe and economical use of your boiler.

Ancillary equipment

A range of flue accessories are available including

vertical flues, twin-pipe flues, bends etc.

For further information contact your supplier.

COMMISSIONING

Ins 048a

Diagram. 1

OPENING THE CONTROL PANEL COVER

Gas safety (Installation and use) Regulations

In your interests and that of gas safety, it is the law

that ALL gas appliances are installed and serviced

by a competent person in accordance with the

above regulations.

Gas leak or fault

If a gas leak or fault exists or is suspected, turn the

boiler off and consult the local gas supply company

or your installation/service company.

Boiler controls

The control panel, located at the lower front of the

boiler casing, see diagram 1, allows the boiler to be

started, shut down, controlled and monitored dur-

ing use.

Flue

Do not obstruct the outside terminal of the boiler.

Starting the boiler

Before starting the boiler check that:

- The gas meter tap is open.

- The boiler gas service cock is open.

- The boiler is connected to the electrical supply and

turned on.

CONTROLS AND LIGHTING

The control panel, located at the lower front of the boiler casing, see diagram 2, allows the boiler to be

started, shut down, controlled and monitored during use.

Hab 197a

Diagram 2

Control panel description (diagram 2):

1 - ON/OFF switch

2 - Summer/winter switch

3 - PC connector

4 - Reset button

5 - Display

6, 7, 8 and 9 - Program selection buttons

10 - Pressure gauge

0 6 5

123

bAR

IMIT

MODE

ENTER

SETPC

98 10

765431 2

SETTING TO SUMMER MODE

(Hot water only)

➜PUSH BUTTON TO POSITION TO SET THE

BOILER TO SUMMER MODE

SETTING TO WINTER MODE

(heating and hot water)

➜PUSH BUTTON TO POSITION

TO SET THE

BOILER TO WINTER MODE

Make sure that:

●The boiler is connected to the electrical supply.

●The boiler gas service cock is open.

●The pressure gauge reads between 1 and 2 bar.

➜PUSH IN BUTTON TO START BOILER

➜

OFF

➜PUSH IN BUTTON IN

SUMMER POSITION

STOP THE BOILER

Assuming that any remote heating controls are

calling for heat, the above procedure is all that

is required to start the boiler in heating mode.

Hot water has priority over heating.

To obtain domestic hot water, open a hot water

tap.

OFF

➜

OFF

➜

OFF

➜

To ensure maximum life of the boiler control

system, it is recommended that the mains is left

switched on all the time. Power consumption

during stand by is only 7 to 8 watts.

Stopping the boilerStarting the boiler

CONTROLS AND LIGHTING

Setting domestic hot water temperature

0 6 5

In all cases, by pressing the «Mode» button until the decimal point disappears, the display reverts to

normal position :

No decimal point displayed

1 - Press «Mode» button once

3 - Press «enter» until the display starts flashing, and press «mode» twice : the boiler is now

operational at the desired hot water temperature.

twice

Note : On the SB versions, this setting is done using the tank thermostat in the tank.

1. 6 5

set

➭➭

2. 6 5

set

mode

➭➭

1. 6 5

enter

➭2. 60

2. 60

➜

2 - Press «+» or «-» button to set the desired hot water temperature from 40°C to 65°C

(factory set at 65°C)

Hab 198a

Setting heating temperature

Note :

1/ In case of under floor heating systems, the CH flow temperature can be set to between 20

C and

C - contact

the Saunier Duval Technical Helpline 01773 828400.

6. 7 0

set

mode

➭➭

6. 85

➭

1. 6 5

mode

➭

1. 60

3 - Press «+» or «-» button to set the desired heating temperature from 20°C to 90°C

(factory set at 70°C)

1 - Press «Mode» button once 2 - Press «Set» button 4 times to show 5on the left

4 - Press «enter» until the display starts flashing, and press «mode» twice : the boiler is now

operational at the desired heating temperature.

Hab 198a

twice

The Ecosy display has three display modes :

A - Reading mode only - this gives information about the operation in progress.

B - Programming mode - this allows the user to change selected settings of the boiler.

C - Diagnostic mode - this allows the user to check selected temperatures during boiler operation.

BOILER OPERATING MODES AND DISPLAY READINGS

A- Reading mode only

0 6 5 No decimal point displayed

During boiler operation, the display gives infor-

mation about the operation in progress (left

hand digit) and the temperature of that

operation (right hand digits).

0 - No demand ➜

1 - Safety purge ➜

2 - Ignition ➜

3 - Boiler on - central heating ➜

4 - Boiler on - hot water ➜

5 - Waiting for closing air pressure switch ➜

6 - Boiler off after reaching temp. ➜

7 - Pump overrun after heating ➜

8 - Pump overrun after hot water ➜

9 - Boiler safety shut down ➜

C - Diagnostic mode :

➭

1. 7 0

Flashing decimal point displayed

➭

1. 7 0

Five settings of the boiler can be changed by

the user.

1 - Press «Mode» button once : The number 1

mode

➭

1. 7 0

3. 0 0

set

➭

Decimal point displayed

will be displayed with

a decimal point after

it.

2 - Press «Set» button to select the setting that

you wish to change (see table below).

3 - Press «+» or «-»

button to adjust

the settings according to the table below

4 - Press «Enter» button and then press «Mode»

button twice to exit from the programming

mode into the display mode.

3. 01

➭

B - Programming mode

Programme Setting

1➜Domestic hot water temperature ............................... adjustable from 40°C to 65°C (factory set at 65°C)

2➜Domestic hot water comfort level............................... factory set at 02 - do not adjust

3➜Pump operation.............................................................00 = do not use

.........................................................................................01 = Intermittent pump (factory setting)

.........................................................................................02 = continuous pump

4 ➜Heating economy .......................................................... factory set at 02 - do not adjust

5 ➜Heating flow temperature ............................................adjustable from 20°C to 90°C (factory set at 70°C)

1. 6 5

set

➭➭

enter

2. 60

➜

Flow temperature

1 6 5

2 6 5

3 6 5

4 6 5

5 6 5

6 6 5

7 6 5

8 6 5

9 6 5

0 6 5

Allows theuser to checkselected temperatures

during boiler operation.

1 - Press «Mode» button twice : The number 1

will be displayed with a flashing decimal point

after it.

2 - Press «Set» button to select the setting that

you wish to check (see table below).

3. 5 0

set

mode ➭

➭

1. 7 0

1 - Central heating flow temperature

2 - Central heating return temperature

3 - Cylinder temperature

4 - Not applicable

5 - Not applicable

6 - Not applicable

7 - Calculated temperature set

8 - Temperature rise of central heating flow

9 - Temperature rise of cylinder

Hab 206

Reg 025

Protection against freezing

If the boiler is to be out of use for any long periods

during severe weather conditions, it is

recommended that the whole system, including the

boiler, be drained to avoid the risk of freezing.

If in doubt, consult your servicing company.

The ECOSY boilers have a built in frost protection

device that protects the boiler from freezing. If the

boiler is to be left and there is a risk of frost, ensure

that the gas and electrical supplies are left

connected and that the ON/OFF switch is left in the

ON position.The frost protection device will switch

the pump when the temperature of the boiler water

falls below 7°C and light the boiler when the

temperature falls below 3°C. When the temperature

reaches 10°C, the boiler stops. The pump will run

again 15 minutes.

DRAINING

Note: This device works irrespective of any room

thermostat setting and only protects the boiler.

Always ensure that adequate frost protection is

given to the entire system where necessary.

Draining and filling

Caution: The boiler is installed as part of a sealed

system which must only be drained and filled by a

competent person.

Heating safety valve

CAUTION: A safety valve with a discharge pipe is

fitted to these boilers.

The valve MUST NOT BE TOUCHED except by a com-

petent person. If the valve discharges at any time,

switch the boiler off and isolate it from the electrical

supply. Contact your installation/service company.

SERVICING/MAINTENANCE

Cleaning

The boiler casing can be cleaned with a damp cloth

followed by a dry cloth to polish.

Do not use abrasive or solvent cleaners.

Boiler casing

CAUTION. Do not remove or adjust the casing in any

way, as incorrect fitting may result in faulty opera-

tion. If in

To ensure the continued efficient and safe opera-

tion of the boiler, it is recommended that it is

checked and serviced at regular intervals. The fre-

quency of servicing will depend upon the installa-

tion conditions and usage but, in general, once a

year should be enough.

Heating output automatically adjustable from (kW) 6,8 6,8 8,9 8,9

to (kW) 24,5 24,5 28,8 28,8

from (Btu/H) 23217 23217 30386 30386

to (Btu/H) 83649 83649 98330 98330

Efficiency (%) 98,9 98,9 97,5 97,5

Part load efficiency 30% (50°C/30°C) (%) 109,3 109,3 106,8 106,8

Maximum heating temperature (°C) 90 90 90 90

Expansion vessel effective capacity (l) 7 12 7 12

Expansion vessel charge pressure (bar) 0,5 1 0,5 1

Maximum system capacity at 75°C (l) 150 215 150 215

Safety valve, maximum service pressure (bar) 3 3 3 3

Products outlet (mm) Ø 60 Ø 60 Ø 60 Ø 60

Fresh air inlet (mm) Ø 100 Ø 100 Ø 100 Ø 100

Hot water output automatically variable from (kW) 6,8 — 8,9 —

to (kW) 24 — 28,8 —

from (Btu/H) 23,21 — 30386 —

to (Btu/H) 81,89 — 98330 —

Maximum hot water temperature (°C) 65 — 65 —

Specific flow rate (for 30°C temperature rise) l/min 11,4 — 13,3 —

Maximum supply pressure (bar) 8 — 8 —

Electrical supply (V) 230 230 230 230

Maximum absorbed power (W) 115 115 132 132

ECOSY 24 E

ECOSY SB

24 E

TECHNICAL DATA

Ø Burner injector (mm) 4,9 4,9 5,6 5,6

Supply pressure (mbar) 20 20 20 20

Gas rate (maximum) (m3/h) 2,6 2,6 3,0 3,0

Gas rate (minimum) (m3/h) 0,7 0,7 0,9 0,9

Natural gas (G20)

(10 kPa = 1 mWG)

Available pressure between

heating flow and return

Available pressure between

heating flow and return

flow rate through heating system (l/h)

500 1000 1500 2000

flow rate through heating system (l/h)

Diagram 3

500 1000 1500

Pump :

Note : Curves 1,2 and 3correspond to each of the three pump speed settings.

ECOSY 24 E, ECOSY SB 24 E ECOSY 28 E, ECOSY SB 28 E

ECOSY SB

28 E

ECOSY 28 E

Pom 043 c

Liquide gas (G30/G31)

Ø Burner injector (mm) 4,15 4,15 / /

Supply pressure (mbar) 28 30/37 / /

Gas rate (maximum) (m3/h) 0,86 0,86 / /

Gas rate (minimum) (m3/h) 0,36 0,36 / /

Pom 048

227

520

890

140

373

201,5

BOILER SCHEMATIC

Hab 204a

Diagram 5

1-Automatic air vent

2-Air inlet/ flue products outlet

3-Heat exchanger

4-Central heating flow thermistor

5-Burner

6-Viewing window with ignition electrode

7-Air pressure switch

8-Fan

9-Electronic control box

10 - Gas valve

11 - Condense drain

12 - Pressure gauge

13 - Pump

14 - 3-way valve (ECOSY 24 E/28 E only)

15 - Expansion vessel

16 - Cylinder (ECOSY 24 E/28 E only)

17 - Cylinder automatic air vent

(ECOSY 24 E/28 E on&ly)

18 - Central heating return thermistor

19 - Domestic hot water thermistor

(ECOSY 24 E/28 E only)

➞

217

Hab 205

DIMENSIONS

Diagram 4

The boiler is delivered in three

separate packages :

- the boiler itself

- the fixing jig

- the flue system

ECOSY 24 E

Net weight : 68 kg

Gross weight : 72 kg

ECOSY SB 24 E

Net weight : 58 kg

Gross weight : 62 kg

ECOSY 28 E

Net weight : 73 kg

Gross weight : 87 kg

ECOSY SB 28 E

Net weight : 63 kg

Gross weight : 77 kg

890 (Ecosy 24 E/SB 24 E)

985 (Ecosy 28 E/SB 28 E)

CONNECTION PLATE

ECOSY 24 E, ECOSY 28 E

From left to right, the connection plate is equipped with:

A - Heating return with isolating valve (m).

B - Cold water inlet with isolating valve (p).

C - Heating flow with isolating valve (q), drain screw (r)

and safety valve (s).

D - Domestic hot water outlet.

E - Electrical connector.

F - Gas service cock.

ECOSY SB 24 E, ECOSY SB 28 E

From left to right, the connection plate is equipped with:

A - Heating return with isolating valve (m).

C - Heating flow with isolating valve (q), drain screw (r)

and safety valve (s).

E - Electrical connector.

F - Gas service cock.

Pla 144a

PIPING SYSTEM INSTALLATION

Heating system connections - Pipe diam 22 mm

●Hot water system connections (ECOSY 24 E/ 28 E

only) - Pipe diam 15 mm

●Gas connection - Pipe diam 22 mm

●Safety valve discharge - Pipe diam 22 mm

Water connection

Connect the copper tails and isolating cocks sup-

plied, to the boiler, see diagram 6 or 7. Connect the

system pipework to the boiler observing the correct

flow and return format as shown in diagram 6 or 7.

Safety valve discharge

WARNING. It must not discharge above an entrance

or window or any type of public access area.

Connect the safety valve discharge pipe to the

boiler, the discharge must be extended using not

less than 15 m o.d. pipe, to discharge in a visible

position outside the building, facing downward pref-

erably over a drain. The pipe must have a continu-

ous fall and be routed to a position so that any dis-

charge of water, possibly boiling or steam, cannot

create any danger to persons, damage to prop-

erty or external electrical components and wiring.

Tighten all pipe connection joints.

Connect the safety valve discharge pipe to the

boiler, the discharge must be extended using not

less than 15 m o.d. pipe, to discharge in a visible

position outside the building, facing downward pref-

erably over a drain. The pipe must have a continu-

ous fall and be routed to a position so that any dis-

charge of water, possibly boiling or steam, cannot

create any danger to persons, damage to prop-

erty or external electrical components and wiring.

Tighten all pipe connection joints.

Gas connection

●The supply from the governed gas meter must be

of adequate size to provide a constant inlet work-

ing pressure of 20 mbar (8 in w.g.).

To avoid low gas pressure problems, it is recom-

mended that the gas supply is connected using 22

mm pipe.

●On completion, the gas installation must be tested

using the pressure drop method and purged in ac-

cordance with the current issue of BS6891.

Gas Safety (Installation and use) Regulations

In your interests and that of gas safety, it is the law

that ALL gas appliances are installed and serviced

by a competent person in accordance with the

above regulations.

55 55

57,5 57,5

113

Diagram 6

Filters and washers :

1 - Fibre washer

2 - Metal filter

3 - Plastic filter

4,5 & 6 - Black graphite

113

115

110

Diagram 7

Pla 202

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