Elnur CMX15, CM15 Installation Instructions And User Manual

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DIGITAL MODULATING

ELECTRIC

FOR

CENTRAL

INSTALLATION INSTRUCTIONS AND USER GUIDE

Please read these instructions before installing or using this appliance for the first time.

These instructions must be followed for the safe installation of the boiler.

Any problem, fault or damage caused by the non

This manual should be retained with the appliance by the user for future reference.

BOILERS & ELECTRIC

BOILERS

HEATING AND DOMESTIC

HOT WATER

CMX15

-observance of these instructions will

not be covered under the manufacturer’s warranty.

COMBI

CM15

INDEX

1 IMPORTANT 1

2 SAFETY 1

3 INTRODUCTION 2

3.1 DESIGN & OPERATION 2

3.2 PRINCIPLE COMPONENTS 2

3.3 KEY TO COMPONENTS 2

3.4 SAFETY DEVICES 3

4 INSTALLATION 3

4.1 GENERAL REQUIREMENTS 4

4.2 UNPACKING & CONTENTS 4

4.3 LOCATION 5

4.4 DIMENSIONS & CONNECTIONS

4.5 CLEARANCES 6

4.6 MOUNTING BRACKET 6

4.7 WATER CONNECTIONS 7

4.8 DHW DISCHARGE PIPE-WORK 8

4.9 PUMP DUTY 9

4.10 ELECTRICAL CONNECTIONS 9

5 COMMISIONING 11

5.1 LIMITING BOILER MAXIMUM OUTPUT 11

5.2 HEATING SYSTEM INITIAL FILLING 12

5.3 PUMP CHECKING & VENTING 12

5.4 HEATING SYSTEM FLUSHING 13

5.5 FILLING DOMESTIC HOT WATER 13

6 OPERATING THE BOILER

6.1 INITIAL SWITCHING ON 13

6.2 CONTROL PANEL DESCRIPTION 13

6.3 DHW OPERATION 14

6.4 CENTRAL HEATING OPERATION 15

6.5 ANTI-FREEZE MODE 15

6.6 HEATING MODULATION FEATURE 15

6.7 LOCKING THE CONTROL PANEL 15

6.8 PUMP ANTI-SEIZE FUNCTION 15

7 TROUBLE SHOOTING 16

7.1 POSSIBLE FAULTS & SOLUTIONS 16

7.2 OVERHEAT LOCK-OUT & RE-SETTING 17

7.3 HEATING FLOW SWITCH – E3 ERROR 17

7.4 CHECKING RATED HEAT OUTPUT 17

8 MAIN COMPONENTS LIST

9 MAINTENANCE & CARE 18

10 ENVIRONMENTAL INFORMATION 18

11 TECHNICAL DATA 19

12 WIRING DIAGRAMS 20

13 EC DECLARATION OF CONFORMITY 22

1 IMPORTANT

The following installation instructions are intended to guide the competent person throughout the entire installation process.

The boiler’s guarantee does not cover any damaged caused by non-observance of any of these instructions.

These installation instructions and user’s guide must be conserved and given to any new user.

The symbols used in the text are explained below:

WARNING This indication shows the possibility

of causing death from electric shock.

WARNING This indication shows the possibility

of causing death or serious injury.

CAUTION This indication shows the possibility

of causing injury or damage to properties only.

Symbol for useful information.

2 SAFETY

o This appliance is not destined for use by anyone

(including children) with reduced physical, sensorial or mental capacities or those who do not know how to use the appliance, unless they are supervised or instructed by a person responsible for their safety.

o Check that the voltage on the indicator plate of the

boiler coincides with the voltage of the mains circuit to which it is going to be connected.

o The use of these boilers in the presence of gases,

explosives or inflammable objects is prohibited.

o The air inputs and outputs of the boiler ensure its

correct operation and protect it from over-heating. They must never be covered.

o This boiler must be disconnected from the mains

electricity before carrying out any internal repairs.

o The boiler must be installed in such a manner that

the switches or other controls cannot be touched by anyone who is using the bath or shower.

o The installation must be performed in accordance

with current electricity regulations.

o This appliance is destined to be permanently

connected to a fixed installation. The power circuit of the boiler must incorporate an omni-polar cutoff switch with a separation between the contacts of at least 3 mm.

o The electricity supply circuit must incorporate a

Residual-Current Device.

o This boiler must be earthed.

o All the models incorporate different safety

elements. If one or more of them are activated, consult the section 7 TROUBLE SHOOTING.

o In time, the presence in the air of smoke, dust and

pollution may stain the walls and areas close to the appliance.

o Any improper use is forbidden. o Do not install the boiler in rooms prone to frost.

3 INTRODUCTION

3.1 DESIGN & OPERATION

The Gabarron CM15 boilers are electrically heated appliances providing wet central heating through a standard radiator system (or underfloor system with special kit).

The Gabarron CMX15 boilers are electrically heated combi boilers providing wet central heating through a standard radiator system (or underfloor system with special kit) and domestic hot water (DHW) delivered from an integral unvented store at mains water pressure.

Outputs are from 2 to 15kW. Maximum output can be adjusted to match the heat requirement of the system or the limitations of the incoming available power supply. Operation is possible on three phase 3x400V+N or single phase 230V - 50Hz.

The boilers are designed for internal installation on a suitable wall with consideration for the total weight of the appliance when full.

A digital control panel provides user control to adjust the temperatures of heating and hot water. A power modulation feature automatically adjusts the heating output to the demand to ensure economic operation.

A suitable external time clock/room thermostat should be fitted.

An adjustable thermostatic blending valve must be fitted on the hot water supply to ensure a safe and economic supply of hot water.

All components for sealed system central heating are builtin. A suitable filling loop should be fitted externally to comply with water supply regulations.

Heating and hot water functions will operate independently but not simultaneously with priority always to hot water production unless this function is not selected.

3.2 PRINCIPLE COMPONENTS

• Insulated steel boiler unit with immersed

stainless steel elements INCOLOY800

• 50 L stainless steel domestic hot water store

with CFC free insulation and immersed stainless steel elements INCOLOY800.

• Fully integrated electronic control boards

featuring temperature control and modulation

function, pump over-run, anti-seize and frost protection. Self diagnostic fault information.

• Sealed system heating components: circulating

pump, 6L expansion vessel, auto air-vent, 3 bar relief valve, pressure gauge, water flow switch and temperature limit safety thermostat.

• Unvented hot water components: 7 bar relief

valve, 2l expansion vessel, non-return valve and temperature limit safety thermostat.

• Silent TRIAC power switches.

• Digital control board.

3.3 KEY TO COMPONENTS

1 DHW 7 bar relief valve. 2 Connection block. 3 ON / OFF switch. 4 DHW safety thermal limit switch. 5 Main contactor. 6 DHW electronic PCB 7 Anti-electrolysis DHW hoses. 8 DHW resistance. 9 Temperature sensor location. 10 Insulated tank 50L. 11 Automatic purge. 12 Heating expansion vessel 6L. 13 DHW expansion vessel 2L. 14 Circulation pump. 15 Insulated heating header tank. 16 Heating resistance. 17 Heating 3 bar relief valve. 18 Heating safety thermal limit switch. 19 Heating flow detector. 20 pressure gauge. 21 Main electronic PCB. 22 Controls card.

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1 Controls card. 2 ON / OFF switch. 3 Heating safety thermal limit switch. 4 Main electronic PCB. 5 Heating resistance. 6 Circulation pump. 7 Insulated heating header tank. 8 Automatic purge. 9 Heating expansion vessel 6L. 10 Drip pan. 11 Heating flow detector. 12 Heating 3 bar relief valve. 13 Main contactor. 14 Connection block. 15 Pressure gauge.

3.4 SAFETY DEVICES

Safe operation under various conditions is ensured by the following controls:

o Water pressure switch that monitors water

pressure and flow in the heating system and will prevent operation in case of a blockage, if the system pressure is too low, the pump is not operating or the system flow rate is below the permitted level; Installation of a system by-pass may be necessary (see 7.3 HEATING SYSTEM FLOW SWITCH – E3 ERROR & SYSTEM BY-PASS REQUIREMENTS).

o Hot water high limit safety thermostat will prevent

operation if the temperature exceeds 80ºC. It requires re-setting manually.

o Heating system high limit safety thermostat will

prevent operation if the temperature exceeds 100ºC. It requires re-setting manually.

o Hot water pressure relief valve will discharge to

relieve excess pressure at 7 bar. (Requires piping to a safe external discharge point.)

o Heating system pressure relief valve will discharge

to relieve excess pressure at 3 bar. (Requires piping to a safe external discharge point.)

4 INSTALLATION

IMPORTANT PRE- INSTALLATION POINTS

In order to ensure the successful installation

and operation of your Gabarron boiler please consider the following points before commencing.

SITING THE BOILER

WARNING Wall and fixings must be suitable to

support the total weight; CMX boiler when full is

120 kg, CM boiler when full is 50 kg. Allow sufficient clearance and access for operating, maintenance and repair work. Boiler must be protected from any water, moisture, or dampness. Installation must comply with regulations for electrics if installed in bathrooms. Boiler electrical protection rating is IP20/IP2X. This boiler is not designed to be installed in the open air. The boiler must be installed in the upright position.

ELECTRICAL POWER SUPPLY & WIRING

WARNING Before carrying out any work inside

he boiler and obtaining access to terminals, all

supply circuits must be disconnected.

WARNING Earth the appliance. If the appliance is

ot earthed, it may hold voltage if a defect occurs.

Competency for electrical installation is required. The power supply must meet the capacity for the heat output required plus all other appliance that may be supplied. The cable, MCB and RCD must be of sufficient capacity to carry the required load.

Boiler is supplied set at maximum output and must be

adjusted to suit the incoming supply before being switched on. (See 5.1 LIMITING BOILER MAXIMUM OUTPUT).

HEATING SYSTEM & CONTROLS

Any existing system must be suitable for sealed system operation at up to 3bar pressure and may require flushing/cleansing. A combi filling loop, isolation valves and drain point are required. A time clock/room thermostat should be installed.(Necessary to activate automatic power modulation)

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System by-pass will be required for fully TRV systems. The correct heat requirement for the dwelling should be calculated.

HOT WATER SYSTEM

Competency to install unvented hot water system is required. Any existing system and controls (e.g. shower) must be suitable to operate at mains water pressure. The incoming water main pressure and flow must be sufficient for requirements. If incoming mains pressure is excessive (above 5 bar) a pressure reducing valve is required. The boiler safety valves require piping to a safe discharge point. In hard water areas it is advisable to take normal precautions against lime scale formation.

4.1 GENERAL REQUIREMENTS

The installation should be carried out by a person certified as competent for the installation of unvented hot water systems in accordance with current building regulations.

Installation should also be in accordance with the relevant British Standards and Codes of Practice including the following:

BS 5449 Forced circulation hot water systems BS 5546 Installation of hot water supplies for domestic

purposes BS 6700 Design, installation, testing and maintenance of

services supplying water BS7074 Application, selection and installation of expansion

vessels and ancillary equipment for sealed water

systems. BS 7593 Code of Practice for treatment of water in heating

systems BS 7671 Requirements for electrical installations, IEE Wiring

Regulations

4.2 UNPACKING & CONTENTS

- Wall bracket with template.

- Boiler.

- Documentation.

- Bag with parts and fittings.

- Wall bracket with template.

- Boiler.

- Documentation.

- Bag with parts and fittings.

C C

1/2

Dispose of the cardboard packaging at a cardboard recycling site. Observe national regulations.

4.3 LOCATION

WARNING INSTALL UPRIGHT ON A WALL SUITABLE TO SUPPORT THE TOTAL WEIGHT OF

THE BOILER WHEN FULL OF WATER – 120 kg.

The location should be clean and dry with no presence of gases, explosives or flammable objects.

It is not suitable for installation outside and should be protected from moisture and frost.

The boiler must be sited so that the boiler and controls are not accessible to any persons whilst using a bath or shower and there should be no possibility of water dripping or splashing onto the boiler or controls.

Electrical safety regulations for clearances must be followed if installed in a bathroom or shower area.

The boiler has an electric protection rating of IP20/IP2X.

Where possible the boiler should be sited to minimize the pipe distance to hot water outlets.

The power supply cable should be carefully routed and secured and provision made for a suitable isolation switch and MCB/RCD.

4.4 DIMENSIONS & CONNECTIONS

200

245

285

355

435

535

450

160

200

350

300

760

265

DIMENSIONS & CONNECTION

A BBCFF

A cold water input 1/2"

B safety valve drain

DHW

. outlet 1/2"

D heating return 3/4"

E heating flow 3/4"

F electrical connection

830

4.5 CLEARANCES

A: 50 mm B: 10 mm C: 200 mm

The clearances around the boiler as shown above must be observed for correct operation.

A minimum of 200mm clearance must be maintained underneath the boiler to allow replacement of the heating elements if required. A minimum of 500 mm clearance must be maintained in front of the boiler to enable easy access for servicing. Ensure sufficient space to make all water connections including the outlet pipes for the heating and hot water safety valves which should be routed to a suitable discharge point.

4.6 MOUNTING BRACKET

Mark the holes positions using the wall bracket as a template per the diagram.

Fit bracket securely onto wall before lifting appliance into position. Drill the holes and fit the bracket ensuring it is level using suitable high strength screws, with appropriate plugs or fixings, minimum M10 size.

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Filling loop

Always use assistance if required. Wear suitable cut

resistant gloves when handling the appliance.

Ensure safe lifting techniques are used. Do not lift the appliance by attached pipe-work or components.

When lifting the boiler ensure that the fixing elements and the wall have a sufficient load-bearing capacity. Check the quality of the wall.

4.7 WATER CONNECTIONS

CAUTION The hydraulic connections must be carried out respecting the flow and return marked on the

boiler.

CAUTION When tightening or loosening threaded connections, always use suitable tools as open-end

spanners. Do not use pipe wrenches, extensions or unsuitable tools that may cause damage or water leaks.

Install purges in the radiators and high points of the installation.

Filling Loop

A combi filling loop is required for filling of the heating system and replacing water lost during servicing or bleeding and should be installed close to the boiler. The loop should be as shown in the diagram and comply with current Water Supply Regulations. The temporary connection should be removed after filling and the valves sealed with suitable caps.

Heating Flow & Return

These connections are ¾ “ for connection to 22mm pipe using the tails provided. Service valves should be installed at this position to allow the boiler to be isolated for maintenance without the need to drain the entire system. The valves should be of sufficiently large bore so not to restrict the heating circulation.

The boiler is not suitable for single pipe heating systems, only a twin-pipe heating system should be used.

Drain Point

A drain point should be fitted at the lowest point of the system. It is not acceptable to drain the boiler through the safety valve as debris and deposits will prevent correct operation of the valve.

Heating System By-pass

The heating water flow switch requires a minimum flow rate through the boiler of 7 L per minute for correct operation. Systems fitted throughout with Thermostatic Radiator Valves will require provision of a System By-pass to maintain sufficient flow should all the valves be closed. (see 7.3 HEATING SYSTEM FLOW SWITCH – E3 ERROR & SYSTEM BY-PASS REQUIREMENTS).

System Expansion

An integral 6 L expansion vessel provides for expansion of the heated system water under normal conditions however a system with larger volumes of water may require extra expansion capacity to be provided.

Mains water

supply

Heating

system

valve valve

Cold Water Inlet

A ½” connection is provided for connection to 15mm pipe. An integral isolating valve provides control of the incoming water supply. An internal non-return valve prevents possible back-flow should the water main fail.

CAUTION: If the incoming water pressure exceeds 5 bar it is necessary to install a Pressure Reducing Valve set at 2.5 bar on the water main into the dwelling. This will protect the boiler and prevent constant opening of the 7 bar relief valve.

Hot Water Outlet

A ½“ connection is provided for connection to 15mm pipe. To ensure economic operation the pipe run between the boiler and taps should be in not more than15 mm dia. pipe and the distance as short as possible. The pipe-work should be insulated to reduce heat loss.

Safety Valve Connections

The 7 bar pressure relief valve on the domestic hot water store may discharge boiling water and should be piped to a safe but visible drain point e.g. a gulley where any discharge will not cause damage or injury.

CAUTION : A tundish should be incorporated close to the appliance where any discharge will be visible but not hazardous. The pipe-work should have a continuous fall to the drain and should be of minimum 22mm dia. if more than one discharge is connected to it.

The 3 bar pressure relief on the sealed heating system may discharge boiling water and should be piped with a continuous fall to a safe yet visible point where any discharge cannot cause damage or injury.

4.8 DHW DISCHARGE PIPE-WORK

The CMX electric combi boiler range incorporates a 50 L unvented hot water storage vessel and an internal, temperature and pressure relief valve.

CAUTION: The discharge pipe-work from the T&P relief valve must be installed by a competent person and in accordance with Part G3 of The Building Regulations.

• The position of the tundish shall be visible to the occupants and shall be positioned away from any

electrical device.

• The pipe size and distance from the T&P valve to the tundish and from the tundish to termination point

must comply with the requirements of Part G3 of the Building Regulations

• The discharge pipe must fall continuously from the valve outlets and be un-obstructed

• The discharge pipe material must be capable of conveying water / steam at 100ºC

• The final discharge point must be in a safe and visible position

Table 1 – Sizing of copper discharge pipe “D2” for common temperature relief valve outlet sizes

*Refer to paragraphs 3.5, 3.9, and 3.9(a) of Approved Document G

Valve

Outlet Size

Minimum size if

discharge pipe

D1*

Minimum size of

discharge pipe

D2* from tundish

Maximum resistance allowed,

expressed as length of straight

pipe (i.e. no elbows or bends)

Resistance created by

each elbow or bend

G1/2

15mm

22mm

28mm 35mm

Up to 9m

Up to 18m Up to 27m

0.8m

1.0m

1.4m

G3/4 22mm

28mm

35mm 42mm

Up to 9m

Up to 18m Up to 27m

1.0m

1.4m

1.7m

G1 28mm

35mm

42mm 54mm

Up to 9m

Up to 18m Up to 27m

1.4m

1.7m

2.3m

Typical Discharge Pipe terminations (source: Building Regulation G3) :

All installations must be fitted in accordance with all local regulations in force at that time. Failure to comply with these regulations will invalidate the manufacturers’ warranty.

4.9 PUMP DUTY

The boiler is fitted with a UPS 25-40 3-speed circulating pump. The graph shows the flow rate available for the system after allowance for the loss through the boiler.

4.10 ELECTRICAL CONNECTIONS

Connection to Mains Supply

The CM15 and CMX15 boilers must be installed in premises having a system impedance of not more than 0.25 + j0.25Ω.

The CM15 and CMX15 boilers comply with the technical requirements of BS EN 61000-3-3.

The CM15 and CMX15 boilers must be installed in premises having a service capacity ≥100 A per phase.

Complete all the pipe-work before connecting the boiler to the electricity supply.

Any re-installation must be performed by qualified electricians.

Ensure that the mains voltage available coincides with that shown on the rating label.

WARNING IMPORTANT: CHECK THAT THE TOTAL POWER SUPPLY TO THE BUILDING HAS SUFFICIENT LOAD CAPACITY TO SUPPLY THE BOILER AT THE HEAT OUTPUT REQUIRED IN ADDITION TO ALL OTHER APPLIANCES THAT MAY BE SUPPLIED.

UPS 25-40

(kPa)

0 20 40 60

(l/min)

0.5

0.5 1.0 1.5 2.0 2.5 3.0

3.5

4.0 4.5 Q(m /h)

H(m)

WARNING T

E SUPPLY CABLE TO THE BOILER SHOULD BE OF SUFFICIENT SIZE TO CARRY THE LOAD CAPACITY REQUIRED. IT SHOULD BE WIRED THROUGH A LINKED ISOLATOR SWITCH WITH MINIMUM CONTACT GAPS OF 3mm IN EVERY POLE AND PROTECTED BY A SUITABLY RATED CIRCUIT BREAKER MCB/RCD Install the necessary electrical protections as indicated in the current regulations. In the event of these regulations not being complied with, the manufacturer will not be liable for any bodily injury or material damage that may occur.

WARNING IT IS ESSENTIAL THAT THE BOILER IS PROPERLY EARTHED and the wiring tested to

current IEE regulations.

Electrical Supply Sizing

The following table shows the specification for a boiler installed on single phase supply.

Connection to Boiler

WARNING Touching live connections can cause serious personal injury.

Before establishing a mains connection switch off the power supply. Secure the power supply against being switched on again. Mains connection terminals remain live even if the on/off switch is turned off.

The boiler is delivered ready for operation on 3x400V three phase supply. For operation on 230V single phase the bridging connection supplied must be connected across the terminals of the connection block as shown.

The terminal connection block is at the rear right-han

d side of the boiler and is accessed after removing the boiler front panel . The supply cable should be safely routed to this point through the cable entry point on the right hand bottom of the boiler.

CAUTION: A mains voltage at the incorrect plug terminal can destroy the electronics.

Make sure the connectin cables are securely fastened to the plug terminals.

Wiring External Controls

It is recommended that the boiler is controlled by an external control such as a time clock or room thermostat or a combined programmable room thermostat such as the Elnur model CTP-10.

CAUTION: The switching connection of this control should be VOLT FREE and connected to the terminals

indicated ‘TA’ on the PCB. The factory fitted link across these terminals must be removed.

The boiler’s automatic power modulation feature is activated by the initial interruption of this switching link.

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



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Rated output of boiler

4kW 5kW 6kW 7kW 8kW 9kW 10kW 11kW 12kW 13kW 15kW

Supply current

17.4A 21.7A 26.1A 30.4A 34.8A 39.1A 43.5A 47.8A 52.2A 56.5A 65.2A

MCB rating

20A 25A 32A 32A 40A 50A 50A 63A 63A 63A 80A

Minimum cable size

2.5mm 4mm 4mm 6mm 6mm 10mm 10mm 10mm 16mm 16mm 16mm

5 COMISSIONING

5.1 LIMITING BOILER MAXIMUM OUTPUT

The boiler is

supplied for operati

maximum to match the heat load required.

WARNING

: ON INSTALLATIONS WHERE THE INCOMING POWER SUPPLY IS NOT CAPABLE OF

MAXIMUM LOAD THE BOILER CONTROL MUST BE RE

SWITCHING ON.

As the output for Domestic Hot Water will also be limited to the same level it is recommended to adjust to the

highest output possible so as to maintain the best hot water performance.

The boiler will not exceed this pre

demand and ensuring economic operation.

Adjustment is made by selecting the desired position of switches numbered 1 to 4 in a block situated on the main

PCB. The PCB is located after isolating from the mains,

The switches are positioned upside down as shown below.

With a small screwdriver move the switches to correspond to the positions shown in the tables for the required

output, referring to a single or three phase supply.

Correct configuration for the

selected output can be checked on the boiler display panel f

shown in 7.

4 CHECKING RATED HEAT OUTPUT

CAUTION: It is

essential

Location of electronic card.

on on maximum heat output of 15

kW. The output can be rated below this

CONFIGURED TO LIMIT THE OUTPUT BEFORE

-set maximum but will still modulate

in heating mode up to this level, adapting to

removing the case and tilting the control panel.

to confirm the power output with the use of a clamp meter.

ollowing the procedure

ATTENTION!

The switches are

upside down.

* The standard configuration of the boiler only allows a maximum of 12kW when connected SINGLE

230V – 50Hz.

5.2 HEATING SYSTEM INITIAL FILLING

Ensure both flow and return isolation valves are open. Identify the boiler automatic air release valve at the top right

hand side of boiler and loosen the cap. Close any manual air vents fitted on the

Be careful n

ot to splash any of the electrical components.

Connect the filling loop and fill slowly until the pressure gauge indicates between 1 and 1.5 bar.

Proceed to vent all the manual release valves until all air is purged from the system. It

through the filling loop during this operation.

5.3 PUMP CHECKING & VENTING

It is important the pump is properly vented and spinning freely.

Connection THREE-PHASE 3x400V~+N

123

234

123

234

123

POSITION OF

THE SWITCHES

MAXIMUM OUTPUT

LIMITED TO :

15kW

13kW

12kW

11kW

10kW

9kW

8kW

7kW

6kW

5kW

4kW

3kW

2kW

LIMITATION OF OUTPUT ON MODELS CM15 & CMX15

system.

The boiler must be disconnected from the mains.

Be careful not to splash any of

Carefully unscrew the cap in the pump centre whilst

protecting the electrics from any water that is released.

Using a suitable screwdriver rotate the exposed spindle and

replace the cap.

NOTE: If excess air remains in the system

insufficient pressure or flow rate the boiler will fail to

operate and display fault E3.

Connection SINGLE PHASE 230V~

123

234

123

21.7A 21.7A 21.7A

13.0A 21.7A 21.7A

21.7A 21.7A 8.7A

13.0A 13.0A 21.7A

21.7A 8.7A 13.0A

13.0A 13.0A 13.0A

13.0A 8.7A 13.0A

8.7A 13.0A 8.7A

8.7A 8.7A 8.7A

- 13.0A 8.7A

8.7A 8.7A -

- - 13.0A

8.7A - -

POSITION OF

THE SWITCHES S

-PHASE

will be necessary to top-up

the electrical components.

or there is

MAXIMUM OUTPUT

LIMITED TO :

15kW*

65.2A*

13kW*

56.5A*

12kW

52.2A

11kW

47.8A

10kW

43.5A

9kW

39.1A

8kW

34.8A

7kW

30.4A

6kW

26.1A

5kW

21.7A

4kW

17.4A

3kW

13.0A

2kW

8.7A

5.4 HEATING SYSTEM FLUSHING

CAUTION:

Flush the heating installation thoroughly prior to installation.

The heating system should be flushed in accordance with BS7593 & BS5449 which will remove any debris or

contaminants detrimental to the operation and life of the boiler. Any cleanser or additives used should comply with

current standards and the

manufactur

NOTE: IT IS IMPORTANT NOT TO USE THE BOILER PRESSURE RELIEF VALVE TO DRAIN OR FLUSH THE

SYSTEM AS TRAPPED DEBRIS WILL CAUSE INCORRECT OPERATION. A PURPOSE PROVIDED DRAIN POINT

SHOULD BE USED.

5.5 FILLING DOMESTIC HOT W

Open the mains water inlet valve underneath the boiler. Turn on all the hot water system taps and thoroughly flush

allowing water to flow until no air is present. This will automatically vent the integral hot water store of any air.

6 OPERATING THE

BOILER

6.1 INITIAL SWITCHING ON

CAUTION:

THE MAXIMUM HEAT OUTPUT MUST BE ADJUSTED BEFORE SWITCHING ON.

BOILER SHOULD NEVER BE SWITCHED ON WITH THE HEATING SYSTEM OR DHW

TANK EMPTY. DAMAGE COULD OCCUR.

6.2 CONTROL PANEL DESCRIPTION

MODELS CMX15

Increases

DHW.

temperature

Power ON/OFF

DHW

key

Decreases

DHW.

temperature

Red dot shows

DHW

. heating

elements on duty

er’s instructions carefully followed.

ATER

When the boiler is first connected it

general self-

check and if a fault is detected it will be indicated

on the display.

Turn on the boiler with the on/off switch located at the back

of the boiler as shown.

Mains connection terminals remain live even if the on/off

switch is turned off.

Increases

heating water

temperature

DHW

temperature and

other messages

Heating water

temp. and other

messages

Red dot shows

heating heating

elements on duty

Decreases

heating water

temperature

THE

will perform a

Keyboard lock

indicator

Keyboard power ON/ OFF

block ON/OFF

Power ON/OFF heating

key

MODELS CM15

Push the

button to start the boiler up. The same button will turn the boiler off when pushed again.

If the heating or DHW

function are not selected

the relevant screen will not

display a value but just a

red dot.

6.3 DOMESTIC HOT WATER OPERATION

To select the DHW

function push the press the

display to just a red dot.

When the DHW

mode is selected the display will show the actual temperature in the

boiler will always give priority to

reached.

If heat is demanded by the

DHW

temperature display.

This light will go out when the desired temperature is

The setting of the DHW

temperature can be modified by pushing

using the same buttons to adjust the setting that flashes on the display. The modified setting will be stored

automatically after a few

seconds, or instantly if we push the

The DHW

setting can be varied between 20 and 55°C.

The DHW

has priority over the central heating operation and so the outputs are never added together.

Heating water

temp. and other

messages

Red dot shows

heating heating

elements on duty

button.

Pushing again will switch the function off and return

DHW production over centr

al heating until the selected

and the elements are energized a small red indicator is displayed to the right of the

reached.

either the

button or the

button.

Increases

heating water

temperature

Power ON/OFF heating

key

Decreases

heating water

temperature

DHW accumulation tank. The

DHW temperature is

button and

Keyboard lock

indicator

On / Off button

Block / Unblock

Water storage at maximum temperature will provide the best protection against the possible formation of

legionella bacteria.

6.4 CENTRAL HEATING OPERATION

First ensure that any external controls such as room thermostat or time clock are demanding heat.

To select the heating function, push the

just a red dot.

When the heating mode is selected the display will show the temperature of the heating water

We can modify the setting o

f the temperature of the water by pushing either the

the button and

using the same buttons to adjust the value

The modified setting will be stored af

The heating setting can be varied between 8ºC and 85°C.

value. If we select this value, the heating will function in anti

If the setting is higher than the actual temperature of the he

will connect and a small red indicator of the consumption of heating resistances will light up.

6.5 ANTI-FREEZE MODE

(Frost Protection)

It is possible to select an anti-

freeze mode for frost protection during periods of inactivity. The power supply to the

boiler must be maintained.

By attempting to set a central heating temperature below the 8

appear on the display. By selecting this value the heating will only work in anti

temperature falls to 7ºC

the heating will activate automatically.

6.6 HEATING MODULATION FEATURE

The advanced control board on the boi

save energy.

This function works by the boiler ‘learning’ and anticipating the time taken to reach the temperature level demanded

by the external thermostatic control. The power

consumption on warmer days or when another heat source is present.

An external ‘volt free’ control must be fitted across the terminals marked ‘TA’ on the PCB and the ‘bridge’ removed

for this function to be activated.

6.7 LOCKING THE CONTROL PANEL

It is possible to lock the buttons of the control panel to prevent any adjustment.

By keeping the

button pressed down for a few seconds, the padlock will light up

The control buttons of the boiler

remain the same and the boiler will function normally.

To unlock the buttons, press the same button down for a few seconds until the padlock light goes off. If the boiler

disconnected from the mains or there is a failure in the house’s electricity supply, the buttons will also be unlocked.

6.8 PUMP ANTI-

SEIZE FUNCTION

The advanced boiler control will automatically energize the pump for 10 seconds each month to protect

seizing during long periods of inactivity. The power supply must be maintained for this function to operate.

button.

Pushing again will switch the function off and return display to

that flashes on the display.

ter a few seconds or instantly if we push the

The symbol H appears after the 85 value or before the 8

-freeze mode.

ating water and the

DHW

ºC

value or above the 85

freeze mode i.e. if the boiler

ler will automatically modulate the heating output to the demand required to

output is automatically adjusted therefore reducing power

will be locked and no button will respond when pressed. Internally all the settings

button or

button.

is not connected, the heating

ºC value the symbol H will

it from

7 TROUBLESHOOTING

7.1 POSSIBLE FAULTS & SOLUTIONS

Problem

Possible cause

Solution

Boiler will not start

power to

boiler.

Check in

coming power supply.

No power

. Check boiler control switch is on.

(See Section 6.1.)

eating

overheat. Switch tripped.

Locate switch and reset. (

See

Section 7.2)

DHW

Overheat

switch tripped.

Locate switch and reset. (See

Section 7.2)

DHW

tank empty.

Open a hot water tap until the

water flows.

Fault

E1 displayed

Heating flow temperature sensor

Heating water out temperature

probe defective.

Contact Technical Service

Fault E2 displayed

Heating return temperature sensor

Heating water

return temperature

probe defective.

Contact Technical Service

Fault E3 displayed

Heating system water flow switch

Low heating system pressure.

Check for leaks.

Refill heating system to 1.5 bar.

Fault E3 continued

Pump not turning.

Check rotating freely (sect

.3)

Replace pump if necessary.

Fault E3 continued

Air in system.

Purge thoroughly.

Check automatic air valve open. Vent pump (sect 5.3)

Fault E3 continued

System resistance too high or

blockage.

Check pump speed 3.

Check pump duty (sect 4.9) Open all radiator valves. Install system by-pass.

Fault E5 displayed

Error in configuration for maximum

heat output.

Check correct configuration (

See

Section 5.1)

Fault

E6 displayed

DHW temperature sensor

Defective DHW tank

mperature

sensor.

Check connections. Replace sensor

if necessary.

Heating system water discharging from 3 bar safety valve

Excessive heating system pressure.

Check filling loop not passing and

remove. Check expansion vessel is charged with air. Check system expansion volume.

Domestic water discharging from 7 bar valve

Excessive pressure in domestic

water system.

Check incoming mains pressure is

below 5 bar. Fit pressure reducing valve. Check 2L expansion vessel charged with air.

The buttons do not respond

Control panel blocked

See Section 10.2 BLOCKING THE

CONTROLS

Low heating temperature

etting

s too

low. Check temperatura & output

selected.

Failure of heating elements

Check and replace.

Heat requirements miscalculated.

Re-

calculate &

configure.

If the suggested action fails to resolve a problem please contact ELNUR technical service for further advice.

7.2 OVERHEAT LOCK-

OUT & RE

Central heating overheat.

If the boiler detects a overheat condition

safety thermal limit switch will operate and switch the boiler off disabling all functions including DHW production.

The cause of the overheat should be investigated.

The safety limit switch

is on the left underside of the boiler and will require re

procedure shown:

Unscrew & remove the black cap and push the

small pin behind it until you hear a click.

The limiter will not re-

set until the

temperature in t

he heating header drops below

100°C or 80°C if the boiler is adapted for

radiant floor heating.

Domestic Hot Water overheat.

As with the heating circuit a second thermal limit switch, situated on the right underside of the boiler, will operate if

a ov

erheat condition (80ºC) is detected in the DHW circuit and switch the boiler off disabling all functions including

central heating.

The cause should be investigated and the above procedure followed to re

7.3 HEATING SYSTEM FLOW

SWITCH

If the error E3 appears on the display, the flow switch has detected insufficient water flow in the heating circuit and

heat production is disabled to protect the boiler from overheating.

The possible caus

es for this condition are:

Insufficient water pressure in the heating system requiring re

Pump not circulating or seized. Check as shown (Sect

Blockage in heating circuit from debris or a foreign object in the boiler or

Insufficient flow rate caused by restrictions such as insufficient size

with restricted bore.

Closed radiator valves (Thermostatic). In this situation it is essential the required minimum flow rate o

minute is maintained through the boiler during all conditions. It may be sufficient to maintain one radiator with

permanently open valves however the guidance under current Building Regulations relating to the conservation of

energy recommends th

e fitting of an automatic by

ensure that the appropriate minimum flow rate is maintained through the boiler, at all other times it is closed thus

preventing unnecessary and wasteful circulatio

7.4 CHECKING RATED HEAT OUTPUT

It is possible to check the actual heat power output configuration that is set on the boiler and also the

modulated operating output at that moment.

Press the

button for three seconds.

The heating display will show

On pushing

button the display will show

according to the tables (see 5.

On pushing

button again the display will show

that moment.

-SETTING

of 100ºC (80ºC if adapted floor heating

) in the central heating circuit a

setting manually by following the

set the DHW limit switch.

– E3 ERROR & SYSTEM BY-

PASS REQUIREMENTS

-filling to 1.5bar

5.3) pipe-

work

pipe-work

, too many bends or isolation valves

pass valve. This type of valve modulates open when necessary to

n through the bypass and the boiler.

followed by the temperature value of the return probe of the heating circuit.

followed by the value of the limited maximum output

followed by the actual modulated output power at

f 7 L per

8 MAIN COMPONENTS

9 MAINTENANCE & CARE

Gabarron electric boilers do not require any special maintenance for a prolonged and trouble-free life however the following points should be observed:

-Check and maintain the heating system pressure between 1 & 1.5 bar when cold. Frequent re-filling of the system could cause scaling and corrosion and should be avoided. Regular pressure loss could indicate a leak and should be investigated promptly.

CAUTION – Under no circumstances should the boiler be switched on when the system is dry..

CAUTION - Never start the boiler when the DHW tank is empty; to fill it for the first time open a hot

water tap and wait until water comes out of it.

-Keep the ventilation openings on the boiler clear to ensure correct operation and protect from overheating. Do not place or store objects on the boiler.

-Protect against freezing by ensuring power is maintained to the boiler at all times unless the water supply is interrupted or the heating system is empty. In dwellings frequently un-occupied or at risk of freezing an appropriate anti-freeze can be added to the heating system at a concentration of not more than 30% by volume. Otherwise it is recommended to isolate the power and completely drain the heating and hot water systems.

- The outer case can be cleaned with a damp cloth having first isolated the boiler from the mains. Do not use solvents or abrasive cleaners.

10 ENVIRONMENTAL INFORMATION

Gabarron boilers are manufactured within a certified environmental management system. From the design stage, all the production phases are performed taking into account the most rigorous environmental requirements. For example, the selection of materials involves guaranteeing their biodegradability, re-use and recycling.

When this boiler’s long, useful life is over; it must be handed in to an electrical equipment collection point for proper recycling. By ensuring that this product is correctly disposed of, you will help to avoid any possible negative effects on the environment and public health that could occur if this product is not properly handled. To obtain more detailed information on the recycling of this product, contact your local authority, your waste disposal service or the shop where you purchased the product. These regulations only apply in EU member countries.

Heating expansion vessel 6L

ref. 60091510

DHW. expansion vessel 2L ref. 60091515 DHW. expansion vessel hose CMX ref.60100020 50 L DHW. insulated tank ref. 60100072 Insulated heating header tank ref. 60101700 Circulation pump 25-40 (130) ref. 60190070 Circulation pump 25-60 (130) ref. 60190071 Main electronic card with support ref. 60101310 DHW. electronic card with support ref. 60101320 Controls card CM15 & CM18 ref. 60100510 Controls card CMX15 & CMX18 ref. 60100540 Temperature probe, white connector ref. 60100580 Temperature probe, black connector ref. 60100590 15 kW heating resistance & joint 140 ref. 60100750

18 kW heating resis

tance & joint 140

ref. 60100760

15 kW DHW. resistance & joint ref. 60100700 DHW. resistance joint ref. 60100068 ¾” heating flow detector ref. 60100800 0-4 bar pressure gauge ref. 60100820 100°C thermal limiter ref. 60091140 80°C thermal limiter ref. 60091150 Automatic purge ref. 60091280 3 bar central heating relief valve ref. 60100840 7 bar DHW. relief valve ref. 60100850 DHW. retention valve ref. 60100830 ½” filling / shut off valve ref. 60091160 Adhesive controls cover 220x60 ref. 60100502 Adhesive controls cover 140x50 ref. 60100508

11 TECHNICAL DATA

CMX15 CM15

Frequency

Hz 50 50

Connection 3x400V+N~



Output limited to

15kW

; Maximum intensity

21.7 21.7

Output limited to

13kW

; Maximum intensity

21.7 21.7

Output limited to

12kW

; Maximum intensity

21.7 21.7

Output limited to

11kW

; Maximum intensity

21.7 21.7

Output limited to

10kW

; Maximum intensity

21.7 21.7

Output limited to

9kW

; Maximum intensity

13.0 13.0

Output limited to

8kW

; Maximum intensity

13.0 13.0

Output limited to

7kW

; Maximum intensity

13.0 13.0

Output limited to

6kW

; Maximum intensity

8.7 8.7

Output limited to

5kW;

Maximum intensity

13.0 13.0

Output limited to

4kW

; Maximum intensity

8.7 8.7

Output limited to

3kW

; Maximum intensity

13.0 13.0

Connection 230V~ single phase



Nominal maximum intensity

15kW

65.2 65.2