INSTALLATION INSTRUCTIONS
AND USER GUIDE
CMX15
CM15
DIGITAL MODULATING ELECTRIC BOILERS &
ELECTRIC COMBI BOILERS
FOR CENTRAL HEATING AND
DOMESTIC HOT WATER
CMX15
CM15
Please read these instructions before installing or
using this appliance for the first time
INDEX
1 IMPORTANT
1
2 SAFETY
1
3 INTRODUCTION
3.1 DESIGN & OPERATION
3.2 PRINCIPLE COMPONENTS
3.3 KEY TO COMPONENTS
3.4 SAFETY DEVICES
2
2
2
2
3
4 INSTALLATION
4.1 GENERAL REQUIREMENTS
4.2 UNPACKING & CONTENTS
4.3 LOCATION
4.4 DIMENSIONS & CONNECTIONS
4.5 CLEARANCES
4.6 MOUNTING BRACKET
4.7 WATER CONNECTIONS
4.8 DHW DISCHARGE PIPE-WORK
4.9 PUMP DUTY
4.10 ELECTRICAL CONNECTIONS
3
4
4
5
5
6
6
7
8
9
9
5 COMMISIONING
5.1 LIMITING BOILER MAXIMUM OUTPUT
5.2 HEATING SYSTEM INITIAL FILLING
5.3 PUMP CHECKING & VENTING
5.4 HEATING SYSTEM FLUSHING
5.5 FILLING DOMESTIC HOT WATER
11
11
12
12
13
13
1 IMPORTANT
6 OPERATING THE BOILER
6.1 INITIAL SWITCHING ON
6.2 CONTROL PANEL DESCRIPTION
6.3 DHW OPERATION
14
6.4 CENTRAL HEATING OPERATION
6.5 ANTI-FREEZE MODE
6.6 HEATING MODULATION FEATURE
6.7 LOCKING THE CONTROL PANEL
6.8 PUMP ANTI-SEIZE FUNCTION
13
13
13
7 TROUBLE SHOOTING
7.1 POSSIBLE FAULTS & SOLUTIONS
7.2 OVERHEAT LOCK-OUT & RE-SETTING
7.3 HEATING FLOW SWITCH – E3 ERROR
7.4 CHECKING RATED HEAT OUTPUT
16
16
17
17
17
8 MAIN COMPONENTS LIST
18
9 MAINTENANCE & CARE
18
10 ENVIRONMENTAL INFORMATION
18
11 TECHNICAL DATA
19
12 EC DECLARATION OF CONFORMITY
20
13 WIRING DIAGRAMS
22
2 SAFETY
The following installation instructions are intended to guide
the competent person throughout the entire installation
process.
o
The boiler’s guarantee does not cover any damaged caused
by non-observance of any of these instructions.
o
These installation instructions and user’s guide must be
conserved and given to any new user.
o
The symbols used in the text are explained below:
o
WARNING
This indication shows the possibility
of causing death from electric shock.
o
WARNING
This indication shows the possibility
of causing death or serious injury.
o
CAUTION
This indication shows the possibility
of causing injury or damage to
properties only.
o
i
o
Symbol for useful information.
o
o
1 15
15
15
15
15
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.
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.
The use of these boilers in the presence of gases,
explosives or inflammable objects is prohibited.
The air inputs and outputs of the boiler ensure its
correct operation and protect it from over-heating.
They must never be covered.
This boiler must be disconnected from the mains
electricity before carrying out any internal repairs.
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.
The installation must be performed in accordance
with current electricity regulations.
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.
The electricity supply circuit must incorporate a
Residual-Current Device.
This boiler must be earthed.
o
o
o
o
All the models incorporate different safety
elements. If one or more of them are activated,
consult the section 7 TROUBLE SHOOTING.
In time, the presence in the air of smoke, dust and
pollution may stain the walls and areas close to the
appliance.
Any improper use is forbidden.
Do not install the boiler in rooms prone to frost.
•
•
3 INTRODUCTION
•
•
3.1 DESIGN & OPERATION
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
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.
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 Main electronic PCB.
20 Pressure gauge.
21 Heating flow detector.
22 Controls card.
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
2 4 INSTALLATION
IMPORTANT PRE- INSTALLATION POINTS
i
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.
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.
ELECTRICAL POWER SUPPLY & WIRING
WARNING Before carrying out any work inside
the boiler and obtaining access to terminals, all
supply circuits must be disconnected.
WARNING Earth the appliance. If the appliance is
not 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.
3.4 SAFETY DEVICES
i
Safe operation under various conditions is ensured by the
following controls:
o
o
o
o
o
Water flow switch that monitors water flow in the
heating system and will prevent operation in case of
a blockage, if the system flow rate is below the
permitted level, error E3 will appear. Installation of
a system by-pass may be necessary (see 7.3
HEATING SYSTEM FLOW SWITCH – E3 ERROR
& SYSTEM BY-PASS REQUIREMENTS).
Hot water high limit safety thermostat will prevent
operation if the temperature exceeds 80ºC. It
requires re-setting manually.
Heating system high limit safety thermostat will
prevent operation if the temperature exceeds
100ºC. It requires re-setting manually.
Hot water pressure relief valve will discharge to
relieve excess pressure at 7 bar. (Requires piping to
a safe external discharge point.)
Heating system pressure relief valve will discharge
to relieve excess pressure at 3 bar. (Requires piping
to a safe external discharge point.)
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)
System by-pass will be required for fully TRV systems.
The correct heat requirement for the dwelling should be
calculated.
3 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).
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.
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
4.1 GENERAL REQUIREMENTS
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.
i
Dispose of the cardboard packaging at a cardboard recycling site. Observe national regulations.
4 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
450
38 830
0 A cold water input 1/2"
B safety valve drain
C DHW. outlet 1/2"
D heating return 3/4"
E heating flow 3/4"
F electrical connection
30 F 80
A B C D E 265
DIMENSIONS & CONNECTION 760
D E B F 3
80
200
160
245
285
355
435
30
200
300
350
535
5 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.
6 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.
i
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
system
valve valve Mains water
supply
Filling loop 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 BYPASS 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.
7 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
G1/2
Minimum size if
discharge pipe
D1*
15mm
G3/4
22mm
G1
28mm
Minimum size of
discharge pipe
D2* from tundish
22mm
28mm
35mm
28mm
35mm
42mm
35mm
42mm
54mm
Maximum resistance allowed,
expressed as length of straight
pipe (i.e. no elbows or bends)
Up to 9m
Up to 18m
Up to 27m
Up to 9m
Up to 18m
Up to 27m
Up to 9m
Up to 18m
Up to 27m
8 Resistance created by
each elbow or bend
0.8m
1.0m
1.4m
1.0m
1.4m
1.7m
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.
UPS 25-40
P
(kPa) H(m)
40
4
3
20
2
1
0
0
0
0
0
0.5
1.0
20
1.5
0.5
2.0
2.5
3.0
3.5
1
40
60
4.0
4.5
3
Q(m /h)
(l/min)
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.
9 WARNING THE 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.
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
20A
25A
32A
32A
40A
50A
50A
50A
63A
63A
80A
2.5mm
4mm
4mm
6mm
6mm
10mm
10mm
10mm
16mm
16mm
16mm
MCB / RCD rating
Minimum cable size
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-hand 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.
i
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. 10 5 COMISSIONING
5.1 LIMITING BOILER MAXIMUM OUTPUT
The boiler is supplied for operation on maximum heat output of 15kW. The output can be rated below this 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-CONFIGURED TO LIMIT THE OUTPUT BEFORE
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-set maximum but will still modulate in heating mode up to this level, adapting to
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, removing the case and tilting the control panel.
i
The switches are positioned upside down as shown below.
ATTENTION!
The switches are
upside down.
Location of electronic card.
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 following the procedure shown
in 7.4 CHECKING RATED HEAT OUTPUT.
CAUTION: It is essential to confirm the power output with the use of a clamp meter.
11 -­‐
13.0A
1 2 3 4
-­‐
ON
3kW
3kW
13.0A
1 2 3 4
ON
LIMITATION OF OUTPUT ON MODELS CM15 & CMX15
Connection SINGLE PHASE 230V~
Connection THREE-­‐PHASE 3x400V~+N
POSITION OF THE SWITCHES S 8kW
13.0A
8.7A
13.0A
7kW
8.7A
13.0A
8.7A
6kW
8.7A
8.7A
8.7A
5kW
-­‐
13.0A
8.7A
4kW
8.7A
8.7A
-­‐
3kW
-­‐
-­‐
13.0A
2kW
8.7A
-­‐
-­‐
ON
13.0A
1 2 3 4
13.0A
1 2 3 4
13.0A
ON
9kW
ON
13.0A
1 2 3 4
8.7A
1 2 3 4
21.7A
ON
10kW
ON
21.7A
1 2 3 4
13.0A
ON
13.0A
1 2 3 4
11kW
1 2 3 4
8.7A
ON
21.7A
ON
21.7A
1 2 3 4
12kW
1 2 3 4
21.7A
ON
21.7A
ON
13.0A
1 2 3 4
13kW
1 2 3 4
21.7A
ON
21.7A
ON
21.7A
1 2 3 4
15kW
1 2 3 4
MAXIMUM OUTPUT LIMITED TO : ON
POSITION OF THE SWITCHES 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
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
* The standard configuration of the boiler only allows a maximum of 12kW when connected SINGLE-PHASE 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 system.
Be careful not 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 will be necessary to top-up
through the filling loop during this operation. 5.3 PUMP CHECKING & VENTING
It is important the pump is properly vented and spinning freely.
The boiler must be disconnected from the mains.
Be careful not to splash any of the electrical components.
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 or there is insufficient
pressure or flow rate the boiler will fail to operate and display
fault E3.
12 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 manufacturer’s instructions carefully followed.
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 WATER
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. THE
BOILER SHOULD NEVER BE SWITCHED ON WITH THE HEATING SYSTEM OR DHW TANK
EMPTY. DAMAGE COULD OCCUR.
i
When the boiler is first connected it will perform a 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.
6.2 CONTROL PANEL DESCRIPTION
MODELS CMX15
Increases
DHW.
temperature
DHW.
temperature and
other messages
Power ON/OFF DHW.
key
Heating water
temp. and other
messages
Increases
heating water
temperature
Keyboard lock
indicator
Keyboard power ON/ OFF
block ON/OFF
Decreases
DHW.
temperature
Block / Unblock Red dot shows
DHW. heating
elements on duty
Red dot shows
heating heating
elements on duty
Decreases
heating water
temperature
13 Power ON/OFF heating
key
MODELS CM15
Heating water
temp. and other
messages
Increases
heating water
temperature
Keyboard lock
indicator
On / Off button
Block / Unblock
Red dot shows
heating heating
elements on duty
Decreases
heating water
temperature
Power ON/OFF heating
key
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
to just a red dot.
button. Pushing again will switch the function off and return display
When the DHW mode is selected the display will show the actual temperature in the DHW accumulation tank. The
boiler will always give priority to DHW production over central heating until the selected DHW temperature is reached.
If heat is demanded by the DHW and the elements are energized a small red indicator is displayed to the right of the
temperature display.
This light will go out when the desired temperature is reached.
The setting of the DHW temperature can be modified by pushing either the
button or the
button and 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
button.
The DHW setting can be varied between 20 and 55°C.
i
The DHW has priority over the central heating operation and so the outputs are never added together.
i
Water storage at maximum temperature will provide the best protection against the possible formation of
legionella bacteria.
14 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
red dot.
button. Pushing again will switch the function off and return display to just a
When the heating mode is selected the display will show the temperature of the heating water.
We can modify the setting of the temperature of the water by pushing either the
button or
the
button and using the same buttons to adjust the value that flashes on the display.
The modified setting will be stored after a few seconds or instantly if we push the
button.
The heating setting can be varied between 8ºC and 85°C. The symbol H appears after the 85 value or before the 8
value. If we select this value, the heating will function in anti-freeze mode.
If the setting is higher than the actual temperature of the heating water and the DHW is not connected, the heating 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 8ºC value or above the 85ºC value the symbol H will
appear on the display. By selecting this value the heating will only work in anti-freeze mode i.e. if the boiler temperature
falls to 7ºC the heating will activate automatically.
6.6 HEATING MODULATION FEATURE
The advanced control board on the boiler will automatically modulate the heating output to the demand required to 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 output is automatically adjusted therefore reducing 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 will be locked and no button will respond when pressed. Internally all the settings
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 is
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 it from seizing
during long periods of inactivity. The power supply must be maintained for this function to operate.
15 7 TROUBLESHOOTING
7.1 POSSIBLE FAULTS & SOLUTIONS
Problem
Boiler will not start
Possible cause
No power to boiler.
No power.
Heating overheat. Switch tripped.
DHW Overheat switch tripped.
DHW tank empty.
Fault E1 displayed
Heating flow temperature sensor
Fault E2 displayed
Heating return temperature sensor
Fault E3 displayed
Heating system water flow switch
Fault E3 continued
Fault E3 continued
Fault E3 continued
Fault E5 displayed
Fault E6 displayed
DHW temperature sensor
Heating water out temperature
probe defective.
Heating water return temperature
probe defective.
Low heating system pressure.
Pump not turning.
Air in system.
System resistance too high or
blockage.
Error in configuration for maximum
heat output.
Defective DHW tank temperature
sensor.
Excessive heating system pressure.
Heating system water
discharging from 3 bar safety
valve
Domestic water discharging
from 7 bar valve
The buttons do not respond
Excessive pressure in domestic
water system.
Control panel blocked
Settings too low.
Low heating temperature
Failure of heating elements
Heat requirements miscalculated.
Solution
Check incoming power supply.
Check boiler control switch is on.
(See Section 6.1.)
Locate switch and reset. (See
Section 7.2)
Locate switch and reset. (See
Section 7.2)
Open a hot water tap until the
water flows.
Contact Technical Service
Contact Technical Service
Check for leaks.
Refill heating system to 1.5 bar.
Check rotating freely (sect 5.3)
Replace pump if necessary.
Purge thoroughly.
Check automatic air valve open.
Vent pump (sect 5.3)
Check pump speed 3.
Check pump duty (sect 4.9)
Open all radiator valves.
Install system by-pass.
Check correct configuration (See
Section 5.1)
Check connections. Replace sensor
if necessary.
Check filling loop not passing and
remove.
Check expansion vessel is charged
with air.
Check system expansion volume.
Check incoming mains pressure is
below 5 bar.
Fit pressure reducing valve.
Check 2L expansion vessel charged
with air.
See Section 10.2 BLOCKING THE
CONTROLS
Check temperatura & output
selected.
Check and replace.
Re-calculate & configure.
If the suggested action fails to resolve a problem please contact ELNUR technical service for further
advice.
16 7.2 OVERHEAT LOCK-OUT & RE-SETTING
Central heating overheat.
If the boiler detects a overheat condition of 100ºC (80ºC if adapted floor heating ) in the central heating circuit a 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-setting manually by following the
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 the 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
overheat 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-set the DHW limit switch.
7.3 HEATING SYSTEM FLOW SWITCH – E3 ERROR & SYSTEM BY-PASS REQUIREMENTS
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 causes for this condition are:
- Insufficient water pressure in the heating system requiring re-filling to 1.5bar
- Pump not circulating or seized. Check as shown (Sect 5.3)
- Blockage in heating circuit from debris or a foreign object in the boiler or pipe-work.
- Insufficient flow rate caused by restrictions such as insufficient size pipe-work, too many bends or isolation valves with
restricted bore.
- Closed radiator valves (Thermostatic). In this situation it is essential the required minimum flow rate of 7 L per 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 the fitting of an automatic by-pass valve. This type of valve modulates open when necessary to ensure that
the appropriate minimum flow rate is maintained through the boiler, at all other times it is closed thus preventing
unnecessary and wasteful circulation through the bypass and the boiler.
7.4 CHECKING RATED HEAT OUTPUT
i
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
followed by the temperature value of the return probe of the heating circuit.
On pushing
button the display will show
to the tables (see 5.1).
On pushing
moment.
followed by the value of the limited maximum output according
button again the display will show
followed by the actual modulated output power at that
17 8 MAIN COMPONENTS
Heating expansion
vessel 6L
DHW. expansion vessel 2L
DHW. expansion vessel hose CMX
insulated tank
50 L DHW.
Insulated heating
header tank
Circulation pump 25-40 (130)
Circulation pump 25-60 (130)
Main electronic
card with support
DHW. electronic card with support
Controls card CM15 & CM18
CMX15 & CMX18
Controls card
probe, white connector
Temperature
probe, black connector
Temperature
15 kW heating
resistance & joint 140
9 MAINTENANCE & CARE
ref. 60091510
ref. 60091515
ref. 60100020
ref. 60100072
ref. 60101700
ref. 60190070
ref. 60190071
ref. 60101310
ref. 60101320
ref. 60100510
ref. 60100540
ref. 60100580
ref. 60100590
ref. 60100750
18 kW heating resistance & joint 140
15 kW DHW. resistance & joint
DHW. resistance joint
¾” heating flow detector
0-4 bar pressure gauge
100°C thermal limiter
80°C thermal limiter
Automatic purge
3 bar central heating relief valve
7 bar DHW. relief valve
DHW. retention valve
½” filling / shut off valve
Adhesive controls cover 220x60
Adhesive controls cover 140x50
ref. 60100760
ref. 60100700
ref. 60100068
ref. 60100800
ref. 60100820
ref. 60091140
ref. 60091150
ref. 60091280
ref. 60100840
ref. 60100850
ref. 60100830
ref. 60091160
ref. 60100502
ref. 60100508
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 ENVIRONMENTALINFORMATION
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.
18 11 TECHNICAL DATA
CMX15
Frequency
Connection 3x400V+N~
Output limited to 15kW; Maximum intensity
Output limited to 13kW; Maximum intensity
Output limited to 12kW; Maximum intensity
Output limited to 11kW; Maximum intensity
Output limited to 10kW; Maximum intensity
Output limited to 9kW; Maximum intensity
Output limited to 8kW; Maximum intensity
Output limited to 7kW; Maximum intensity
Output limited to 6kW; Maximum intensity
Output limited to 5kW; Maximum intensity
Output limited to 4kW; Maximum intensity
Output limited to 3kW; Maximum intensity
Connection 230V~ single phase
Nominal maximum intensity 15kW
Maximum converted intensity at 13kW
Maximum converted intensity at 12kW
Maximum converted intensity at 11kW
Maximum converted intensity at 10kW
Maximum converted intensity at 9kW
Maximum converted intensity at 8kW
Maximum converted intensity at 7kW
Maximum converted intensity at 6kW
Maximum converted intensity at 5kW
Maximum converted intensity at 4kW
Maximum converted intensity at 3kW
DHW available time with 15kW
DHW available time with 13kW
DHW available time with 12kW
DHW available time with 11kW
DHW available time with 10kW
DHW available time with 9kW
DHW available time with 8kW
DHW available time with 7kW
DHW available time with 6kW
DHW available time with 5kW
DHW available time with 4kW
DHW available time with 3kW
DHW available time with 2kW
Weight
Insulated steel heater header
50 L stainless steel insulated DHW store
Stainless steel plated resistance elements INCOLOY800
Stainless steel plated resistance elements INCOLOY800
6 litre expansion vessel
DHW 2 litre expansion vessel
Electronic regulation of heater modulation
Electronic regulation DHW
Digital display
0-4 bar pressure gauge
Accelerator pump
Automatic purge
TRIACS silent power switches
Heating flow detector
100°C heating temperature limiter
80°C DHW temperature limiter
3 bar central heating relief valve
7 bar DHW relief valve
DHW retention valve
Ambient thermostat intake
Anti-electrolysis DHW hoses.
¿included
1
Hz
50
¿
21.7
21.7
21.7
21.7
21.7
13.0
13.0
13.0
13.0
13.0
13.0
13.0
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65.2
56.5
52.2
47.8
43.5
39.1
34.8
30.4
26.1
21.7
17.4
13.0
5’49”
6’42”
7’16”
7’56”
8’43”
9’41”
10’54”
12’27”
14’32”
17’26”
21’48”
29’04”
43’36”
70
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A
A
A
A
min
min
min
min
min
min
min
min
min
min
min
min
min
kg
No CFC
DHW
Heating
using connecting bridge included
19 CM15
50
¿
21.7
21.7
21.7
21.7
21.7
13.0
13.0
13.0
13.0
13.0
13.0
13.0
¿1
65.2
56.5
52.2
47.8
43.5
39.1
34.8
30.4
26.1
21.7
17.4
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32
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-
EC DECLARATION OF CONFORMITY
According to ISO/CEI guide 22 and EN 45014
Manufacturer’s name:
ELNUR S.A.
Manufacturer’s address:
ELNUR S.A.
Villa Esther, 11; Pol. Ind. El Nogal
28110 Algete, Madrid
Declares, that the product:
Product:
Digital Modulating Electric Boiler
Trade Mark:
GABARRÓN
Models:
CM15; CM18; CMX15; CMX18; CMX15P; CMX18P
has been manufactured to the technical specifications of the product and conforms in all
respects to the relevant standards and regulations in force and especially to :
Safety:
EN 60335-1:2012
EN 60335-2-35:2002+A1:2007+A2:2011
EN 50106:2008
EMC:
EN 55014-1:2006+A1:2009+A2:2011
EN 55014-2:1997+A1:2001+A2:2008
EN 61000-3-2:2006+A1:2009+A2:2009
EN 61000-3-3:2008
Additional information:
The product herewith complies with the requirements of the Low Voltage Directive 2006/95/EC and the
EMC Directive 2004/108/EEC and carries the CE mark.
Any use not according to the instructions and/or any change to the appliance will invalidate this
declaration of conformity.
Algete, 1 de Febrero de 2013
Place, date
A. Fernández
Director-Gerente
20 12 WIRING DIAGRAMS
21 NOTES
The symbol on the product or in its packaging indicates that this product may not be treated
as household waste. Instead it shall be handed over to the applicable collection point for the
recycling of electrical and electronic equipment. By ensuring this product is disposed of
correctly, you will help prevent potential negative consequences for the environment and
human health, which could otherwise be caused by inappropriate waste handling of this
product. For more detailed information about recycling of this product, please contact your
local city office, your household waste disposal service or the shop where you purchased the
product. These instructions are only valid in the EU member states.
22 ELNUR UK Ltd.
Unit 1, Brown Street North
Leigh, Lancashire
WN7 1BU
www.elnur.co.uk
Customer Service Department:
Telephone +44(0)1942 670119
technical@elnur.co.uk
Manufactured by:
ELNUR, S.A.
Madrid, Spain
www.elnur-global.com
export@elnur-global.com
Management System International Certifications:
As a part of the policy of continuous product improvement Elnur reserves the right to alter specifications without notice.
INSTALLATION INSTRUCTIONS AND USER GUIDE WEB VERSION