Sime Murelle HE 25 30.55 User guide

Brand: Sime

Model: Murelle HE 25 30.55

Category: Water heaters & boilers

Type: User guide

MURELLE HE

25/55-30/55

Installation and

servicing instructions

PLEASE LEAVE THIS INSTRUCTION

WITH THE USER

All descriptions and illustrations provided in this manual have been carefully prepared but we reserve the right to make changes

and improvements in our products that may affect the accuracy of the information contained in this manual.

The Benchmark Scheme

Sime Ltd is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and

commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimi-

se safety, efficiency and performance.

Benchmark is managed and promoted by the Heating and Hotwater Industry Council.

For more information visit www

.centralheating.co.uk

IMPORTANT

When carrying out commissioning of the boiler, you are highly recommended to perform the following checks:

–

Make sure that there are no liquids or inflammable materials in the immediate vicinity of the boiler.

– Make sure that the electrical connections have been made correctly and that the earth wire is connected to a

good earthing system.

– Open the gas tap and check the soundness of the connections, including that of the burner.

– Make sure that the boiler is set for operation for the type of gas supplied.

– Check that the flue pipe for the outlet of the products of the combustion is unobstructed and has been properly

installed.

– Make sure that any shutoff valves are open.

– Make sure that the system is charged with water and is thoroughly vented.

– Check that the circulating pump is not jammed (CAUTION: protect the control panel from any water lost from the

pump.

– Purge the system, bleeding off the air present in the gas pipe by operating the pressure relief valve on the gas

valve inlet.

– Ensure that all the controls and safety devices have been demonstrated to the user.

– Ensure that all the manuals and documentation that are supplied with the boiler are left with the user.

CONTENTS

1 DESCRIPTION OF THE BOILER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 6

2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 10

3 CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 21

4 USE AND MAINTENANCE

(including BENCHMARK/Mains Pressure Hot Water Storage Checklist & Service Record) . . . . . . pag. 26

5 FAULT FINDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 36

6 REPLACEMENT OF PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 37

7 EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 39

Murelle HE 25/55:

Gas Council number 47-283-15

Murelle HE 30/55:

Gas Council number 47-283-16

IPX4D

Important Information

IT IS A STATUTORY REQUIREMENT THAT ALL GAS APPLIANCES ARE INSTALLED BY COMPETENT PERSONS,

IN ACCORDANCE WITH THE GAS SAFETY (INSTALLATION AND USE) REGULATIONS (CURRENT EDITION). The

manufacturer’s instructions must not be taken as overriding any statutory requirements, and failure to com-

ply with these regulations may lead to prosecution.

No modifications to the appliance should be made unless they are fully approved by the manufacturer.

GAS LEAKS: DO NOT OPERATE ANY ELECTRICAL SWITCH, OR USE A NAKED FLAME. TURN OFF THE GAS

SUPPLY AND VENTILATE THE AREA BY OPENING DOORS AND WINDOWS CONTACT THE GAS EMERGENCY

SERVICE ON 0800111999.

Please refer to commissioning instructions for filling in the checklist of this installation guide.

Note: All Gas Safe registered installers carry a ID Card.

You can check your installer is Gas Safe Registered by calling 0800 408 5577

1.1 INTRODUCTION

MURELLE HE 25-30/55 are premixed

gas condensation thermal modules that

employ a microprocessor-based technology

to control and manage all the functions.

All modules are compliant with European

Directives 90/396/CE, 2004/108/CE,

2006/95/CE and 92/42/CE.

For optimum installation and operation,

always follow the instructions provided in

this manual.

The products manufactured and sold by

Sime do not contain any banned materials

or substances (ie they comply with

ISO9000:2000).

1.2 UNPACK AND CHECK THE

CONTENTS, AND PACKAGING

REMOVAL.

1.2.1 Handling the boiler

Due to the weight of the boiler, take care to

avoid personal injury or damage.

1.2.2 Storage Prior to installation

The boiler must be stored horizontally on

its pallet prior to installation.

Do not stack more than six units.

1.2.3 Unpacking the boiler

The boiler is supplied fully assembled, the

kit includes :

- boiler

- Valve pack

- guarantee

- these Installation/Users instructions

- wall mounting template.

Remove the strapping and carefully remove

the carton and packaging.

Check the contents, instructions, valve

pack, and hanging bracket.

Remove the two bolts securing the boiler to

the pallet.

1 DESCRIPTION OF THE BOILER

100

15 2

100

EU MRG

245

288

15 6

460

190

110

ø 60/100

950

400

955

470

600

Fig. 1

1.3 DIMENSIONS

L (mm)

Murelle HE 25/55 BF 286

Murelle HE 30/55 BF 222

SERVICE CLEARANCES

ABOVE THE APPLIANCE CASING 300 mm

AT THE R.H.S. 20 mm

AT THE L.H.S. 20 mm

BELOW THE APPLIANCE CASING 400 mm

IN FRONT OF THE APPLIANCE 500 mm

CONNECTIONS

R C.H. return 22 mm Compression

M C.H. flow 22 mm Compression

G Gas connection 15 mm Compression

E D.H.W. inlet 22 mm Compression

U D.H.W. outlet 15 mm Compression

C Ricirculation 15 mm Compression

S3 Condensation outlet ø 20

Models 25/55 BF 30/55 BF

Heat output

Nominal (80-60°C) kW 23.9 28.9

Nominal (50-30°C) kW 26.2 31.6

Reduced G20 (80-60°C) kW 6.1 7.6

Reduced G20 (50-30°C) kW 7.0 8.5

Reduced G31 (80-60°C) kW 7.5 8.7

Reduced G31 (50-30°C) kW 8.5 9.6

Heat input

Nominal kW 24.5 29.5

Reduced G20/G31 kW 6.5/8.0 8.0/9.0

Max/min useful yield (80-60°C) % 94/97.5 95/98

Max/min useful yield (50-30°C) % 107/107 107/107

Useful yield at 30% of the load (50-30°C) %107 107

Termal efficiency (CEE 92/42 directive) ★★★★ ★★★★

Losses after shutdown to 50°C (EN 483) W/h 90 95

Supply voltage V-Hz 230-50 230-50

Adsorbed power consumption W115 115

Electrical protection grade IP X4D X4D

C.H. setting range °C 20/80 20/80

Water content boiler l 9.6 10

Maximum water head bar 3 3

Maximum temperature °C 85 85

Capacity/pressure of the heating expansion vessel l/bar 10/1 10/1

Normal operating pressure of the system (max) bar 5.5 5.5

D.H.W. setting range °C 30/60 30/60

D.H.W. flow rate (EN 625) l/min 15.5 17.5

Continuous D.H.W. flow rate ∆t 30°C l/min 11.4 13.8

Continuous D.H.W. flow rate ∆t 35°C l/min 9.8 11.8

D.H.W pressure min/max bar 0.2/5.5 0.2/5.5

D.H.W. tank capacity l51 51

Recuperation time between 15 and 60°C min 9’ 55” 10’ 10”

Recuperation heat of 70% contents min 3’ 40” 3’ 30”

D.H.W. expansion vessel capacity / charge pressure l/bar 2.5/3.0 2.5/3.0

Exhaust fumes temperature at max flow rate (80-60°C) °C 70 70

Exhaust fumes temperature at min. flow rate (80-60°C) °C 65 65

Exhaust fumes temperature at max flow rate (50-30°C) °C 40 40

Exhaust fumes temperature at min. flow rate (50-30°C) °C 35 35

Smokes flow min/max kg/h 12/42 14/50

2 at max/min flow rate G20 - G31 % 9.0/9.0 - 10.0/10.0 9.0/9.0 - 10.0/10.0

CE certification n° 1312BS5039 1312BS5039

Category II2H3P II2H3P

Type B23P-53P/C13-33-43-53-83 B23P-53P/C13-33-43-53-83

NOx emission class 5 (< 70 mg/kWh) 5 (< 70 mg/kWh)

Weight when empty kg 68 70

Main burner nozzle

Quantity nozzles n° 1 1

G20/G31 nozzle diameter ø 6.0/4.4 6.0/4.4

Consumption at maximum/minimum flow rate

G20 m

/h 2.59/0.53 3.12/0.66

G31 kg/h 1.90/0.62 2.29/0.62

Gas supply pressure

G20/G31 mbar 20/37 20/37

1.4 TECHNICAL FEATURES

1.5 FUNCTIONAL DIAGRAM

Fig. 2

KEY

1 Fan

2 Air/gas mixer

3 Primary exchanger

4 Limit stat

5 Air relief valve

6 Safety thermostat 100°C

7 C.H. sensor (SM)

8 Flow switch

9 C.H. Expansion vessel

10 D.H.W. tank

11 TPR valve 7 BAR 90°C -TPRV

12 Magnesium anode

13 D.H.W. sensor (SB)

14 C.H. Safety valve 3 BAR

15 Gas valve

16 Pump

17 Diverter valve

18 Air bleed valve

19 D.H.W. expansion vessel

20 Water pressure transducer

21 Automatic bypass

23 D.H.W. drain cock

24 Condensate drain tap

25 Gas cock

26 Heating system return cock

27 Heating system delivery cock

30 Pressure reducing valve 3.5 BAR

31 Single check valve

32 Expansion relief valve 6 BAR

33 Tundish expansion relief valve

34 Filling loop

35 Tundish

36 D.H.W. over heating thermostat 85°C

CONNECTIONS

R C.H. return

M C.H. flow

G Gas connection

E D.H.W. inlet

U D.H.W. outlet

C Recirculation

S3 Condensation outlet

Fig. 3

1.6 MAIN COMPONENTS

KEY

1 Control panel

2 Heating system circulator

3 Gas valve

4 Flow switch

5 C.H. sensor (SM)

6 Condensate drain tap

7Fan

8 Detection electrode

9 Ignition electrode

10 Primary exchanger

11 Exhaust fumes probe

12 Air relief valve

13 Limit stat 90°C

14 Ignition transformer

15 D.H.W. combined temperature

and pressure relief valve

16 Expansion vessel

17 Safety thermostat 100°C

18 D.H.W. sensor (SB)

19 D.H.W. tank

20 D.H.W. expansion vessel

21 Tundish

22 C.H. safety valve 3 BAR

23 D.H.W. over heating thermostat 85°C

Where no specific instructions are given,

the installation should be in accordance

with the relevant recommendations in the

current editions of the following British

Standards and Codes of Practice: BS

5440-1, BS 5440-2, BS 5449, BS 5482

(propane installations), BS 5546, BS 6700,

BS 6798, BS 6891, Institute of Gas Engi-

neer document IGE/UP-7, BS 7074 (expan-

sion vessel), and to other relevant British

Standards or code of Practice as neces-

sary. It is a Statutory Requirement that

the installation conforms to the appropria-

te Building Regulations either The Building

Regulations, The Building Regulations (Sco-

tland), Building Regulations (Northern Ire-

land), the Water Fitting Regulations or

Water Byelaws in Scotland, and the cur-

rent I.E.E Wiring Regulations. When hand-

ling, due consideration should be given to

the appliance weight. If the appliance is not

to be installed immediately it should be sto-

red in a clean dry place.

2.1 VENTILATION REQUIREMENTS

Detailled recommendations for air supply

are given in BS5440:2. The following notes

are for general guidance:

– It is not necessary to have a purpose

provided air vent in the room or com-

partment in which the appliance is

installed. However, suitable clearances

for maintenance and servicing should

be provided, see fig. 1.

2.1.1 Anti-freeze function

The boilers are equipped with anti-freeze

function which activates the pumps and the

burner when the temperature of the water

contained inside the appliance drops to

below 6°C. The anti-freeze function is ensu-

red, however, only if:

- the boiler is correctly connected to the

gas and electricity supply circuits;

- the boiler is constantly fed;

- the boiler ignition is not blocked;

- the essential components of the boiler

are all in working order.

In these conditions the boiler is protected

against frost down to an environmental

temperature of -5°C.

ATTENTION: In the case of installation in a

place where the temperature drops below

0°C, the connection pipes must be protected.

2.2 BOILER SUPPORT BRACKET

Ensure that the wall on which the boiler is to

be mounted is capable of supporting the

weight of the boiler when filled( 123kg -

25/55 and 125kg - 30/55)

- Position the bracket ensuring that the boi-

ler is fitted with sufficient clearance to

allow for the fitting of the valve connec-

tions.

- Fix the bracket level and with fixings capa-

ble of supporting the weight.

- Hang the boiler and then tighten the

screws indicated in fig 4.

2.3 HOW TO FIT C.H. AND D.H.W.

FITTINGS AND GAS COCK (fig. 5)

– C.H. CONNECTIONS (R & M)

it the two isolation valves (10) using the

gasket supplied (6). Fit the C.H. filling

loop between the C.H and D.H.W. cir-

cuits, ensuring the correct position and

orientation of the isolation valves.

– D.H.W. CONNECTION (E & U)

Fit the supplied; pressure reducing valve

(17), check valve (16), and expansion

relief valve assembly (14) with its associ-

ated tundish (15), ensure that on com-

pletion of the installation that the tun

dish is visible to the user, in the D.H.W.

supply to the appliance, the flow from

this assembly should be connected to

the cold water inlet (E) via the flow regu-

lator housing supplied. Ensure flow regu-

lator (11) and gasket (1) supplied, are fit-

ted in the flow regulator housing.

See fig. 5 and fig. 6 for installation

details. It is important that no isolating

valve is fitted between the expansion

relief valve and the inlet to the D.H.W.

tank. Any additional D.H.W. drain down

tap fitted should be positioned as low as

possible to ensure that at least 80% of

the D.H.W. tank’s capacity can be

drained. If installed in a Hard Water

area, then a suitable device should be fit-

ted to treat the mains supply to the

appliance (Contact your Water Distribu-

tion Company for advice on suitable

devices). Fit the quarter bend (2) to the

hot water outlet (U) using the gasket

supplied (1).

– GAS CONNECTION (C)

Fit the gas cock (12) to the gas connec-

tion (R) using the gasket supplied (6).

2.4 WATER SYSTEMS - GENERAL

This appliance is designed for connection to

sealed central heating water systems.

Check that the mains water flow is sufficient

to produce the required DHW flow rate but

does not exceed 4 bar pressure.

A expansion relief valve is incorporated

within the valve kit. Inlet safety kit and all

safety devices must be installed.

or balanced pressures in premises

For balanced pressure to the whole pre-

mises an additional pressure reducing

valve should be installed at the inlet to the

premises set at 3.5 BAR.

The maximum water supply pressures to

the pressure reducing must be of 16 BAR.

2.4.1 Treatment of Water

Circulating Systems

– All recirculatory systems will be subject

to corrosion unless an appropriate

water treatment is applied. This means

that the efficiency of the system will

deteriorate as corrosion sludge accu-

mulates within the system, risking dam-

age to pump and valves, boiler noise and

circulation problems.

– For optimum performance after installa-

tion this boiler and its associated central

heating system must be flushed in

accordance with the guidelines given in

BS 7593 “Treatment of water in domes-

tic hot water central heating systems”.

– This must involve the use of a propri-

etary cleanser, such as Sentinel X300

or X400, or Fernox Superfloc. Full

instructions are supplied with the prod-

ucts, but for immediate information

please contact GE Betz (0151 420

9563) or Fernox (01799 550 811)

directly.

– For long term protection against corro-

sion and scale, after flushing it is recom-

mended that an inhibitor such as Sen-

tinel X100, or Fernox MB-1 or Copal is

dosed in accordance with the guidelines

given in BS 7593. Failure to flush and

add inhibitor to the system may invali-

date the appliance warranty.

– It is important to check the inhibitor con-

centration after installation, system

modification and at every service in

accordance with the manufacturer’s

instructions. (Test kits are available from

inhibitor stockists).

2.4.2 Requirements for

sealed water systems

The heating system design should be based

on the following information:

2 INSTALLATION

Fig. 4

The available pump head is given in fig. 20.

b) The burner starts when the C.H. flow

reaches 400÷450 l/h. This safety con-

dition is ensured by the flow switch.

c) The appliance is equipped with an inter-

nal by-pass that operates with system

heads (H) greater than 3 m. The maxi-

mum flow through the by-pass is about

300 l/h. If thermostatic radiator valves

are to be installed, at least one radiator

should be without a thermostatic valve

(usually the bathroom radiator).

d) A sealed system must only be filled by a

competent person using the filling loop

as shown in fig 5.

e) To fill the cylinder, open a DHW tap,

then turn on the domestic water supply.

When water runs from the tap turn it

off. Repeat at each DHW tap.

NOTE: there should be no isolation valve

fitted between the cylinder and the

expansion valve.

f) To drain the cylinder see fig. 2 number

23.

2.4.3 Discharge Pipes and fittings

The position of any tundish must be visible

to the occupants and any tundish, drain

valve and discharge pipe and must be sited

away from any electrical components.

The 7 and 3 bar PRV's are called out with

the number 15 and 22 on fig. 3.

The connections to the expansion relief

valve and temperature and pressure relief

valve should not be used for any other pur-

pose.

See fig. 6 for example of the discharge

pipe(s) for the temperature and pressure

ø15

DS3

DS7

Fig. 5

KEY

1 Gasket ø 11,5/18,5 x 2

6 Gasket ø 17/24 x 2

8 Brass olive for 22 mm pipe

9 Locking nut 1-1/8”

10 Cock 3/4”

11 Flow regulator

Gas cock

13 Filling loop

14 Expansion relief valve

15 Tundish expansion relief valve

16 Single check valve

17 Pressure reducing valve

18 Curve return system

19 Curve flow system

20 D.H.W. outlet pipe

21 Brass olive for 15 mm pipe

22 Locking nut 1/2”

CONNECTIONS

G Gas inlet

M C.H. flow

R C.H. return

U D.H.W. outlet

E D.H.W. inlet

S3 Condensation outlet

DS 3 3 bar discharge

DS 7 7 bar discharge

DS 3

DS 7

No isolation valve should be fitted

between the cylinder and the

expansion valve.

relief valve, and expansion relief valve termi-

nations.

Note: it is permitted to connect discharge

pipes together provided that the joint pipe

is sized to accommodate the combined

flow.

2.4.4 Expansion Vessel (C.H. only)

C.H. EXPANSION VESSEL – The integral

expansion vessel is pre-charged to a pres-

sure of 1.0 bar, which should be checked

before the C.H. water system is filled.

This vessel is suitable for correct operation

of system capacities up to 82 litre capacity.

If the actual C.H. system volume is greater,

then an additional vessel must be fitted to

the system.

For systems where the volume is greater,

the additional expansion vessel volume can

be determined by multiplying the volume in

excess of that which can be accommoda-

ted by the appliance by the factor 0.901.

BS 7074 gives further details regarding

C.H. expansion vessel sizing.

2.4.5 Connection of condensation

water trap

The drip board and its water trap must be

connected to a civil drain through a pipe

with a slope of at least 5 mm per metre to

ensure drainage of condensation water.

The plastic pipes normally used for civil

drains are the only type of pipe which is

appropriate for conveying condensation

to the building’s sewer pipes.

Fig. 6

Fig. 7

LIST OF ø 60/100 ACCESSORIES

1a-b

Coaxial duct kit L. 790 code 8096250

2a Extension L. 1000 code 8096150

2b Extension L. 500 code 8096151

3 Vertical extension L. 140 with coupling code 8086950

C33

H (m)

C13

L (m)

IMPORTANT:

- The insertion of each additional 90° bend with a diameter of 60/100 (code

8095850) reduces the available section by 1.5 meters.

- The insertion of each additional 90° bend with a diameter of 80/125 (code

8095870) reduces the available section by 2 meters.

- Each additional 45° curve installed a diameter of 60/100 (code 8095550) the

80/125 (code 8095970) reduces the available length by 1.0 metres.

- During assembly it is important to make sure that the kit with axial pipes (1) is posi-

tioned HORIZONTAL FLUES MUST BE LEVEL..

NOTE: Before connecting accessories, it is always advisable to lubricate the internal

part of the gaskets with silicon products. Avoid using oils and greases.

Model Length of pipe Length of pipe

ø 60/100 ø 80/125

HV HV

Min Max Min Max

25/55 6 m 1.3 m 8 m 12 m 1.2 m 15 m

30/55 5 m 1.3 m 7 m 10 m 1.2 m 13 m

LIST OF ø 80/125 ACCESSORIES

1a-b Coaxial duct kit L. 785 code 8096253

2a Extension L. 1000 code 8096171

2b Extension L. 500 code 8096170

3 Adapter for ø 80/125 code 8093150

V (VERTICAL - m)

H (HORIZONTAL - m)

163

286

211

166

222

336

15 6

130

25/55

30/55

115

190

ø 80

ø 60

2.4.6 Filter on the gas pipe

The gas valve is supplied ex factory with an

inlet filter, which, however, is not adequate

to entrap all the impurities in the gas or in

gas main pipes.

To prevent malfunctioning of the valve, or in

certain cases even to cut out the safety

device with which the valve is equipped,

install an adequate filter on the gas pipe.

2.4.7 Discharge Pipe

See fig. 6 for example discharge pipe termi-

nations.

2.5 INSTALLATION OF COAXIAL DUCT

(ø 60/100 - ø 80/125)

The axial suction and discharge pipes are

supplied in a special kit (that can be purcha-

sed separately) along with assembly

instructions. The diagrams of fig. 7 illustra-

te some examples of different types of

discharge modalities allowed and the maxi-

mum lengths that can be reached.

2.6 INSTALLATION OF SEPARATE

DUCTS (ø 80)

Separate duct kit code 8089911 is used to

connect twin 80mm pipes. See fig 8.

The maximum overall length of the flue is

determined by the head losses of the indivi-

dual components and must not exceed

15mm H2O. Additionally the length of either

the inlet or exhaust pipe must not exceed

50 m. See Table 1 for information on the

load losses of single accessories and Fig. 9

for types of “smoke outlet”-”air inlet”.

2.6.1 Separate ducts kit

The diagrams of Figure 9 show a few exam-

ples of the permitted exhausts configura-

tions.

Fig. 8

TABLE 1 - ACCESSORIES ø 80

Accessories ø 80 Head loss (mm H

25/55 30/55

Inlet Outlet Inlet Outlet

Coaxial duct kit -- -- -- --

90° elbow MF 0.20 0.25 0.25 0.30

45° elbow MF 0.15 0.15 0.20 0.20

Extension L. 1000 (horizontal) 0.15 0.15 0.20 0.20

Extension L. 1000 (vertical) 0.15 0.15 0.20 0.20

Wall terminal 0.10 0.25 0.10 0.35

Wall coaxial exhaust

Roof outlet terminal * 0.80 0.10 1.10 0.15

The losses of the roof terminal on the air intake side, inclu-

de already the adaptor code 8091400/01.

C33

LIST OF ø 80 ACCESSORIES

1 Coaxial duct kit code 8089911

2 Additional 90° MF curve code 8077450 (6 pz.)

3 a Extension L. 1000 code 8077351 (6 pz.)

3 b Extension L. 500 code 8077350 (6 pz.)

7 a Additional 45° MF curve code 8077451(6 pz.)

7 b Additional 90° MF curve code 8077450 (6 pz.)

9 Manifold, code 8091400

10 Tile for joint code 8091300

11 Terminal for roof exit L. 1381 code 8091204

12 --------

13 Union suction/exhaust code 8091401

14 Coaxial exhaust ø 80/125 L. 885 code 8091210

NOTE

Before connecting accessories, it is always advisable to lubricate the internal part of

the gaskets with silicon products. Avoid using oils and greases. Horizontal terminals

must be level.

Fig. 9

KEY

CA Inlet

CS Outlet

C13

2.7 POSITIONING

THE OUTLET TERMINALS

The outlet terminals for forced-draught

appliances may be located in the external

perimeter walls of the building. To provide

some indications of possible solutions, Table

2 gives the minimum distances to be obser-

ved, with reference to the type of building

shown in fig. 9.

2.8 ELECTRICAL CONNECTION

The boiler is supplied with an electric cable.

Should this require replacement, it must be

purchased exclusively from SIME.

The electric power supply to the boiler must

be 230V - 50Hz single-phase through a

fused main switch, fused at 3 amps with at

least 3 mm spacing between contacts.

Respect the L and N polarities and the

earth connection.

NOTE: SIME declines all responsibility for

–If the terminal discharges into a pathway or passageway check that combustion prod-

ucts will not cause nuisance and that the terminal will not obstruct the passageway.

–Where the lowest part of the terminal is fitted less than 2 m (78 in) above ground,

above a balcony or above a flat roof to which people have access, the terminal MUST

be protected by a purpose designed guard. Terminal guards are available from

Quinnell, Barrett, and Quinnell, Old Kent Road, London. State model C2, (G.C. Part No

382946).

–Where the terminal is fitted within 850 mm (34 in) of a plastic or painted gutter, or

450 mm (18 in) of painted eaves, an aluminium shield at least 1,500 mm (59 in) long

must be fitted to the underside of the painted surface.

–The air inlet/outlet flue duct MUST NOT be closer than 25 mm (1 in) to combustible

material.

–In certain weather conditions the terminal may emit a plume of steam. This is normal

but positions where this would cause a nuisance should be avoided.

Fig. 9

Terminal position Minimum spacing

A Directly below an openable window, air vent

or any other ventilation opening 300 mm 12 in

B Below guttering, drain pipes or soil pipes 75 mm 3 in

C/D Below eaves, balconies or carport roof 200 mm 8 in

E From vertical drain pipes or soil pipes 75 mm 3 in

F From internal or external corners 300 mm 12 in

G Above adjacent ground, roof or balcony level 300 mm 12 in

H From a boundary or surface facing the boiler 600 mm 24 in

I From a terminal facing the terminal 1,200 mm 48 in

J From an opening in the carport

(eg door, window into dwelling) 1,200 mm 48 in

K Vertically from a terminal on the same wall 1,500 mm 60 in

L Horizontally from a terminal on the same wall 300 mm 12 in

M Horizontally from a vertical terminal to a wall 300 mm 12 in

N Horizontally from an openable window or other opening 300 mm 12 in

P Above an openable window or other opening 300 mm 12 in

TABLE 2

2.8.6 Use with different

electronic systems

Some examples are given below of boiler

systems combined with different electronic

systems. Where necessary, the parame-

ters to be set in the boiler are given.

The electrical connections to the boiler

refer to the wording on the diagram (fig.

11).

The zone valve control starts at every

demand for heating of the zone 1 (it is from

part of the TA1 or the CR).

Description of the letters indicating the

components shown on the system dia-

grams:

M System output

R System return

CR Remote control CR73

SE External temperature sensor

TA1-2-3-4 Zone room thermostat

CT1-2 Zone room thermostat internal

time clock

VZ1-2 Zone valve

RL1-2-3-4 Zone relay

Sl Hydraulic separator

P1-2-3-4 Zone pump

IP Floor system

EXP Expansion card (code 8092233)

VM Three-way mixer valve

TA1

injury or damage to persons ,animals or

property, resulting from the failure to pro-

vide for proper earthing of the appliance.

2.8.1 Room Thermostat

The heat demand can by a "clean contact"

(conforming to EN607301), room stat or

programmer connected to the "TA" con-

nection ( fig 11) , CN6 terminals 7&8, after

removing the link.

Alternatively the heat demand can be by a

230v switched control, connected to ter-

minal 14 on connector CN7 and removal of

the TA link.

2.8.2 External Control CR53

A CR53 external control (part number

8092227),can be connected to the boiler.

This will control the heating function of the

boiler. The domestic hot water will continue

to be controlled by the boiler keypad.

NOTE: Reset parameter 10 to 2 (PAR 10

= 2).

2.8.3 Remote control CR 73

connection (optional)

The boiler is designed for connection to a

remote control unit, supplied on request

(code 8092226). The remote control unit

CR 73 allows for complete remote control

of the boiler, except reset.

The boiler display will show the following

message:

For installation and use of the remote con-

trol, follow the instructions in the package.

NOTE: Ensure PAR 10 set to 1 (PAR 10 =

1).

2.8.4 External sensor connection

The boiler is designed for connection to an

external temperature sensor, supplied on

request (code 8094101), which can auto-

matically regulate the temperature value of

the boiler output according to the external

temperature.

For installation, follow the instruction in the

package.

2.8.5 Remote RF control

The boiler is designed for connection to RF

remote controllers( mechanical - code

8092231 or digital - code 8092232),

which can control the central heating func-

tion.

1 BASIC SYSTEM

SYSTEM WITH A DIRECT ZONE AND ROOM THERMOSTAT, OR

WITH A CLIMATIC REGULATOR CR 53 (Code 8092227) OR WITH

REMOTE CONTROL CR 73 (Code 8092226) AND EXTERNAL SEN-

SOR (Code 8094101)

PARAMETERS SETTINGS

If using CR 53 set parameter 10 to 2

(PAR 10 = 2)

TA1

VZ1

TA2

VZ2

TA1

TA2

TA1

RL1

RL2

TA2

TA1

VZ1

TA2

VZ2

2 BASIC SYSTEM

MULTI-ZONE SYSTEM WITH PUMP, ROOM THERMOSTAT AND EXTERNAL SENSOR (Code 8094101)

3 BASIC SYSTEM

MULTI-ZONE SYSTEM WITH PUMP, ROOM THERMOSTAT AND EXTERNAL SENSOR (Code 8094101)

4 BASIC SYSTEM

MULTI-ZONE SYSTEM WITH VALVE, ROOM THERMOSTAT, REMOTE CONTROL CR 73 (Code 8092226)

AND EXTERNAL SENSOR (Code 8094101)

PARAMETERS SETTINGS

To use the remote control

(CR) as remote control panel

for the boiler rather than as

room reference, set:

PAR 7 = 0

TA2

VZ1

TA2

VZ2

VZ1

TA1

PARAMETER SETTING

To use the remote control (CR) as room reference for a zone, set: PAR 7 = 1

Set the opening time of the zone valve VZ: PAR 33 = “OPENING TIME”

TA1

TA2

RL1

RL2

PARAMETER SETTING

To use the remote control (CR) as room reference for a zone, set: PAR 7 = 1

5 BASIC SYSTEM

MULTI-ZONE SYSTEM WITH VALVE, ROOM THERMOSTAT, REMOTE CONTROL CR 73 (Code 8092226)

AND EXTERNAL SENSOR (Code 8094101)

6 BASIC SYSTEM

MULTI-ZONE SYSTEM WITH PUMP, ROOM THERMOSTAT, REMOTE CONTROL CR 73 (Code 8092226)

AND EXTERNAL SENSOR (Code 8094101)

CT2

TA1

CT1

RL2

TA2

RL1

ZONA

GIORNO

(70°C)

ZONA

NOTTE

(50°C)

8 SYSTEM WITH DOUBLE TEMPERATURE OUTPUT

MULTI-ZONE SYSTEM WITH PUMP, ROOM THERMOSTAT INTERNAL TIME CLOCK AND EXTERNAL

SENSOR (Code 8094101)

CT2

TA1

CT1

TA2

VZ1

VZ2

ZONA

GIORNO

(70°C)

ZONA

NOTTE

(50°C)

DURING NIGHT TIME THE BOILER USES A LOWER OUTPUT TEMPERATURE IF DIFFERENT TIMES HAVE BEEN SET

FOR DAY AND NIGHT AREAS:

- with external sensor, set the climatic curve of the day zone 1 with PAR 25 and the night zone at PAR 26.

- without external sensor, gain access to setting the day zone 1 by pressing the key and change the value with

the keys and . Gain access to setting the night zone by pressing the key twice and changing the value

with the keys and

7 SYSTEM WITH DOUBLE TEMPERATURE OUTPUT

MULTI-ZONE SYSTEM WITH VALVE, ROOM THERMOSTAT INTERNAL TIME CLOCK AND EXTERNAL

SENSOR (Code 8094101)

DAY

ZONE

(70°C)

NIGHT

ZONE

(50°C)

DAY

ZONE

(70°C)

NIGHT

ZONE

(50°C)

TA2

TA1

RL2

TA2

EXP

TA3

TA1

RL3

TA2

EXP

TA4

RL4

TA1

TA2

11 SYSTEM WITH MIXER VALVE

SYSTEM WITH ONE DIRECT ZONE AND ONE MIXED ZONE

12 SYSTEM WITH MIXER VALVE

SYSTEM WITH TWO DIRECT ZONES AND TWO MIXED ZONES

PARAMETERS SETTINGS

To use the remote control

(CR) as remote control panel

for the boiler rather than as

room reference, set:

PAR 7 = 0

2.9 BOILER ELECTRICAL

Fig. 11

KEY

F1-2 Fuse (4 AT)

TRA Ignition transformer

PI Pump

VFan

EA Ignition electrode

ER Detection electrode

EV1-2 Gas valve coil

TS Safety thermostat

SF Exhaust fumes probe

TL Limit stat

SM Heating sensor

FL Water flow switch

VD Deviator valve

TPA Pressure transducer

TA1 Zone 1 environment thermostat

TA2 Zone 2 environment thermostat

SB D.H.W. sensor

CR Remote control CR 73 (optional)

SE External sensor (optional)

OP Programming clock (optional)

EXP Expansion card

AR/PR Recirculation pump control

or remote alarm

VZ Zone valve

AUX Auxiliary connection

TLS D.H.W. over heating thermostat 85°

NOTE: Connect TA1 to the clamps 7-8 after

having removed the bridge.

CONNECTOR SPARE

PART CODES:

CN1/CN13 code 6316231

CN2 code 6316233

CN3 code 6316276

CN4 code 6316203

CN5 code 6316200

CN6 code 6316202

CN7 code 6316204

CN9 code 6316201

CN10 cod. 6316227

CN11 cod. 6316226

CN12 code 6299991

CN14 code 6316230

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Sime Murelle HE 25 30.55 User guide

Brand: Sime

Model: Murelle HE 25 30.55

Category: Water heaters & boilers

Type: User guide

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Sime Murelle HE 25 30.55 User guide

Sime Murelle HE 25 30.55 User guide

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