Gabarron CMX15 Mounting instructions

DIGITAL MODULATING BOILERS
FOR HEATING AND SANITARY HOT WATER
CMX15 CM15
CMX18 CM18
INSTALLATION INSTRUCTIONS AND USER GUIDE
Please read these instructions before installing or using this appliance for the first time.

2 Gabarrón CM&CMX
INDEX
1 IMPORTANT INFORMATION………………………………………………………….. 3
2 INSTALLATION…………………………………………………………………………….. 3
2.1 LOCATION AND INSTALLATION……………………………………….. 3
2.2 FILLING LOOP……………………………………………………………….. 5
3 COMMISIONING…………………………………………………………………………. 6
3.1 HEATING…………………………………………………………………….. 6
3.2 SANITARY HOT WATER……………………………………………….. 6
4 LIMITATION OF THE MAXIMUM OUTPUT………………………………….. 7
5 DESCRIPTION OF THE CONTROL PANEL……………………………………… 9
6 USING THE BOILER……………………………………………………………………... 10
6.1 TURNING ON AND OFF……………..……………………………….. 10
6.2 BLOC ING THE CONTROLS………………………………………….. 10
6.3 HEATING…………………………………………………………………….. 10
6.3.1 Ambient thermostat….………………………………. 11
6.3.2 Modulation of the heating………………………… 11
6.3.3 Anti-blocking of the accelerator pump……… 11
6.3.4 Heater safety……….…………………………………… 12
6.4 SANITARY HOT WATER (S.H.W.)……………………………………. 13
6.4.1 Adjusting the S.H.W. temperature.………….. 13
6.4.2 S.H.W. safety…..………………………………………. 13
7 MAINTENANCE…………………………………………………………………………. 14
8 TROUBLESHOOTING…………………………………………………………………. 14
9 TECHNICAL DATA……………………………………………………………………… 15
10 ENVIRONMENTAL INFORMATION ………………………………………… 16
11 MAIN COMPONENTS…… ……………………………………………………….. 16
12 WIRING…… ……………………………………………………………………………. 17

3
1 IMPORTANT INFORMATION
The boiler’s guarantee does not cover any damaged caused by the non-observance of any of these instructions.
This manual must be conserved and given to any new user.
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.
Complete all the plumbing work before connecting the boiler to the electricity supply.
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.
Any re-installation must be performed by qualified electricians.
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 not be installed directly below a power take-off point.
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 cut-off switch with a separation between the contacts of at least 3 mm. No
other appliances should be powered from this supply
The electricity supply circuit must incorporate a differential switch.
This boiler must be earthed.
All the models incorporate different safety elements. If one or more of them are activated, consult the section
PROBLEMS & SOLUTIONS.
Do not use the fitted pressure relief valve to flush the system as particles trapped in the valve will cause
incorrect valve operation.
In time, the presence in the air of smoke, dust and pollution may stain the walls and areas close to the
appliance.
2 INSTALLATION
2 1 LOCATION AND INSTALLATION
200
80
245
285
355
435
535
8
3
450
3
160
200
30
80
350
300
760
265
DIMENSIONS & CONNECTION
A B
B
C
F
F D
D
E
E
A cold water input 1/2"
B safety valve drain
C S.H.W. outlet 1/2"
D heatin return 3/4"
E heatin out 3/4"
F electrical connection
830
30

4 Gabarrón CM&CMX
10
200
10
The boiler must be located in a place free from frost
and moisture. This boiler is not designed to be
installed in the open air. The boiler must be installed
in an upright position.
The boiler must be located above 200 mm above any
object to allow the heating elements to be replaced.
Please maintain the shown clearances around the
CMX and CM boiler.
The boiler must be installed in a solid wall
able of resist the weight of the boiler
when full of water.
Mark the holes positions using the wall
bracket as a template as per this figure.
Drill the holes and plug with appropriate
plugs. If there is any doubt as to the
strength of the wall please consult an
expert.
Fit the bracket (CMX models have two brackets) to the wall by using high strength screws. Hang the boiler from
the brackets to secure it to the wall. Now the boiler may be plumbed into the central heating system.
If the boiler is fitted with a thermostatic mixing blending valve
remove the two metallic transport protections at the bottom of
the boiler. They are part of the packaging.
CMX CM

5
•Ensure that the mains voltage available coincides with that shown on the rating label.
•The electrical installation must comply with the current regulations. The cross-section of the power
conductors must be sufficient for the rated power or the power to which the boiler has been limited.
•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.
•It is necessary to install the boiler in such a manner that it can be separated from all the poles of the
electricity mains with a contact clearance width of a minimum of 3 mm.
•The hydraulic connections to the heating and S.H.W. circuit must be carried out respecting the out and
return marked on the boiler.
•Install purges in the radiators and high points of the installation.
•In models CM18 and CM15, install a filling valve for the heating circuit as close as possible to the boiler. In
models CMX18 and CMX15, the filling valve is incorporated inside the boiler.
•Install the discharge valve at the lowest point of the installation, in order to be able to empty the
installation completely if necessary.
•The system should be flushed prior to connecting the boiler to remove all particles from the pipe work. Do
not use the fitted pressure relief valve to flush the circuit as particles trapped in the valve will cause
incorrect valve operation.
•We recommend running the heating circuit pressure safety valve to the drain in order to avoid a water
spillage in the event of the pressure exceeding 3 kg/cm
2
. It should be left open to the atmosphere; any
connection to the outlet pipe must be of a minimum diameter of 15 mm.
•CMX models only: It is essential to run the safety pressure valve of the S.H.W. header rated at 7 kg/cm
2
to a
drain.
•If the circuit pressure exceeds 5 kg/cm
2
, it is recommended that a pressure reducer is installed in the pipe
at the exit from the water meter of the dwelling.
•It is essential to connect the boiler to a good earth connection.
•The boiler can be controlled by an external regulator, for example an ambient thermostat or an ambient
chrono-thermostat. This must be connected to the terminals on the electronic board once the existing
bridge between both terminals has been suppressed. (See the electrical diagram). WARNING : Use a volt
free connection The use of an external regulator is essential for the modulating system to work. Please
check compatibility with thermostat manufacturer’s installation instructions.
•The installation must be performed in such a manner as to facilitate maintenance and repair work. The
hydraulic connections must be made using flexible couplings or hoses in order to facilitate disconnecting
the boiler from the circuit. If these aspects of the installation are not adhered to, the Technical Service will
not be obliged to repair the boiler.
•Before carrying out any work inside the boiler, do not forget to disconnect the electrical supply.
•If the heating installation includes hydraulic thermostatic valves or automatic area controls, it is necessary
to avoid at all times interrupting the water circulation, as this will activate the safety thermostat.
2 2 FILLING LOOP
A filling loop should be fitted at some point to allow the heating system to be filled. This boiler is not fitted with a
filling loop. Remove the flexible hose after filling.
Heating return
Double check valve
Mains water supply
Flexible Hose

6 Gabarrón CM&CMX
3 COMMISSIONING
3 1 HEATING
Check that the drainage points located in the lower part of the installation are completely closed.
Open the purges of the installation and the boiler.
Use a good corrosion inhibitor in the heating system. Use the inhibitor according to the manufacturer’s instructions.
The heating system should be filled using the approved installed filling loop until the water pressure gauge reads
between approximately 1 and 1.5 bar.
Disconnect the heating system from the approved installed filling loop.
Close the installation purges when water begins to flow through them. The boiler automatic air eliminator must not
be closed.
Start the heating by pushing the button the heating display will light up.
Select a set point higher than the temperature indicated on the heating display and check the consumption once the
operating indicator of the central heating resistances lights up. The S.H.W. has priority; if the S.H.W. is connected
and consuming, this point cannot be verified.
Purge the installation again if necessary.
Reinstate any possible losses in pressure by opening the filling valve until the pressure gauge reads between 1 and
1.5 bar.
If the boiler includes the option of radiant floor heating (requested on placing the order), the central heating safety
thermostat will activate at 80°C and the temperature of the heating resistance cannot exceed 50°C.
3 2 SANITARY HOT WATER (S H W )
Proceed to fill the 50-litre accumulator tank, opening the tap of the S H W to draw out the air from the water
accumulator
Once the water is flowing normally, shut off the tap and connect the S.H.W. by pushing the button. Select a
resistance temperature for the S.H.W. higher than the temperature shown on the S.H.W, display and check that the
consumption indicator of the S.H.W. resistances lights up.
Check that once the set point temperature has been reached, the consumption indicator goes off.
If the boiler is fitted with a thermostatic mixing blending valve
the temperature of the hot water is user adjustable by turning
the control knob on the valve at the bottom of the boiler.

7
4 LIMITATION OF THE MAXIMUM OUTPUT
It is possible to limit the maximum output of the boilers by selecting the combination required in the table
corresponding to each model.
The boiler output will never exceed the selected value.
The boiler will continue to modulate in heating mode on all the lower steps, adapting to the installation’s
consumption.
It is necessary to employ an external ambient thermostat or a chrono thermostat.
The output in S.H.W. on the CMX15 and CMX18 models is also limited to the maximum value of the corresponding
table.
To access the electronic card, disconnect the boiler from the mains and remove the front panel.
Removing the upper screws, tilt the control panel. Locate the main card.
Move the switches with a small screwdriver and make them coincide with the corresponding combination on the
tables for each boiler model.
Replace the front panel following the steps in reverse and connect the boiler to the mains.
IMPORTANT: Check immediately before activating the modulation system with a clamp meter that the consumption
corresponds to the output selected.
On the CMX models, turn off the S.H.W. pressing the button to verify the heating consumption.
Location of electronic card.
ATTENTION!
The switches are upside down

8 Gabarrón CM&CMX
It is possible to check the actual configuration of a boiler by pressing the button for three seconds.
The heating display will show followed by the value of the return probe of the heating circuit.
On pushing button the display will show followed by the value of the limited maximum output
according to the preceding tables.
On pushing button again the display will show
followed by the actual modulated output value.
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
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
1 2 34
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
POSITION OF
THE SWITCHES
MAXIMUM OUTPUT
LIMITED TO :
MAX.
CURRENT
PHASE : R
MAX.
CURRENT
PHASE : S
MAX.
CURRENT
PHASE : T
15kW 21.7A 21.7A 21.7A
13kW 13.0A 21.7A 21.7A
12kW 21.7A 21.7A 8.7A
11kW 13.0A 13.0A 21.7A
10kW 21.7A 8.7A 13.0A
9kW 13.0A 13.0A 13.0A
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 - -
POSITION OF
THE SWITCHES
MAXIMUM OUTPUT
LIMITED TO :
MAX.
CURRENT
PHASE :
R
MAX.
CURRENT
PHASE
S
:
MAX.
CURRENT
PHASE :
T
18kW 26.0A 26.0A 26.0A
15kW 13.0A 26.0A 26.0A
12kW 13.0A 13.0A 26.0A
9kW 13.0A 13.0A 13.0A
6kW - 13.0A 13.0A
3kW - - 13.0A
POSITION OF
THE SWITCHES S
MAXIMUM OUTPUT
LIMITED TO :
MAX.
CURRENT
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
POSITION OF
THE SWITCHES
MAXIMUM OUTPUT
LIMITED TO :
MAX.
CURRENT
18kW 78.3A
15kW 65.2A
12kW 52.2A
9kW 39.1A
6kW 26.1A
3kW 13.0A
Connection 3x400V~+N
Connection 3x400V~+N
Connection 230V~
Connection 230V~
LIMITATION OF OUTPUT ON MODELS CM18 & CMX18
LIMITATION OF OUTPUT ON MODELS CM15 & CMX15

9
5 DESCRIPTION OF THE CONTROL PANEL
MODELS CMX18 & CMX15
MODELS CM18 & CM15
Increase
heating water
temperature
.H.W.
temperature and
other messages
Heating temp.
and other
messages
Increase
.H.W.
temperature
Blockage
indicator
.H.W. On / Off
button
On / Off button
Block / Unblock
Reduce
.H.W.
temperature
Heating On / Off
button
Heating
resistances
operating
indicator
.H.W. resistances
operating
indicator
Reduce
heating water
temperature
Increase
heating
Blockage
indicator
Heating temp.
and other
messages
On
/ Off button
Block / Unblock
Heating
resistances
operating
indicator
Heating On / Off
button Reduce heating

10 Gabarrón CM&CMX
6 USING THE BOILER
6 1 TURNING ON AND OFF
When the boiler is connected to the mains it will perform a general self-check and, if any defect is detected, it will be
indicated on the heating or S.H.W. displays.
Push the button to start the boiler up. The same button will turn the boiler off when pushed again.
If the heating display only shows a small red dot, the heating function is switched off.
To start the heating, push the button.
The same occurs with the Sanitary Hot Water (S.H.W.): if the display is off apart from a small red dot, the S.H.W
function is switched off; to switch the S.H.W. on, press the button.
6 2 BLOCKING THE CONTROLS
By keeping the button pressed down for a few seconds, the padlock will light up .
The control buttons of the boiler will be blocked and no button will respond when pressed. Internally all the settings
remain the same and the boiler functions normally.
To unblock the buttons, press the 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 unblocked.
6 3 HEATING
Always maintain an adequate pressure in the heating circuit. The water pressure gauge should mark about 1.5 bar.
If the pressure rises above this, open the draining valve of the heating circuit located in the house slightly until the
pressure reaches 1.5 bar when cold.
If the pressure is lower, open the filling valve of the heating circuit located under the boiler until the proper pressure
is reached.
To start the heating, push the button. At the end of the heating time, we can turn this function off by pressing
the same button (the display will then only show a small red dot).
When the heating is on, the display will show the temperature of the water.
Only CMX models:
There is an independent switch at the back of the
boiler. It will connect ON and OFF the boiler.

We can modify the setting of the temperature of the water by pushing either the
and using the same buttons to adjust the value that flashes on the display.
The modified setting will be stored after a few
If the setting is higher than the actual temperature of the heating water and the S.H.W is not connected, the heating
will connect and a small red indicator of the consumption of heating resistances will light up.
This will always occur
if the ambient temperature demands it.
The heating setting can be varied between 8 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
boiler will connect automatically.
6 3 1 Ambient thermostat
The optimum operation of the heating installation is achieved when an ambient thermostat or ambient chrono
thermostat is connected to the boiler.
Connect the normally open cont
substitution of the bridge.
(See the electrical diagram).
WARNING : Use a volt free connection
work. Please check compatibility with thermostat manufacturer’s installation instructions.
6 3 2
Modulation of the heating
Always provided that an ambient thermostat is connected to the boiler, this will work modulating the output,
adjusting it to
the heat necessities of the installation. In this way, on cold days the boiler will use more power and on
warmer days the power consumed will be reduced.
This occurs automatically and requires no action on the part of the user; just follow the specific in
ambient thermostat or chrono thermostat.
6 3 3 Anti-
blocking of the accelerator pump
The boiler has a blocking control on the circulation pump. Whenever the heating is turned off, the circulation pump
continues working for two minutes m
Whenever the boiler is started using
switched off.
Once every month, even if the boiler or the heating is switched off, the pump will run for 10 seconds.
We can modify the setting of the temperature of the water by pushing either the
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
If the setting is higher than the actual temperature of the heating water and the S.H.W is not connected, the heating
will connect and a small red indicator of the consumption of heating resistances will light up.
if the ambient temperature demands it.
The heating setting can be varied between 8 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 temperature falls
boiler will connect automatically.
The optimum operation of the heating installation is achieved when an ambient thermostat or ambient chrono
thermostat is connected to the boiler.
Connect the normally open cont
act of the ambient thermostat to the terminals of the electronic card of the boiler in
(See the electrical diagram).
WARNING : Use a volt free connection
The use of an external regulator is essential for the modulating syst
work. Please check compatibility with thermostat manufacturer’s installation instructions.
Modulation of the heating
Always provided that an ambient thermostat is connected to the boiler, this will work modulating the output,
the heat necessities of the installation. In this way, on cold days the boiler will use more power and on
warmer days the power consumed will be reduced.
This occurs automatically and requires no action on the part of the user; just follow the specific in
ambient thermostat or chrono thermostat.
blocking of the accelerator pump
The boiler has a blocking control on the circulation pump. Whenever the heating is turned off, the circulation pump
continues working for two minutes m
ore.
Whenever the boiler is started using
button the pump will run for 10 seconds even though the heating is
Once every month, even if the boiler or the heating is switched off, the pump will run for 10 seconds.
If, despite everything
, the pump seizes, follow the followin
steps in order to unblock it:
-
First disconnect the boiler from the mains
-
Take off the front panel after removing the two screws on
the upper part of the boiler to access the pump.
-Remove the front cover as shown in
the figure. A small
quantity of water may appear at this moment, stop it from
splashing by using a cloth or absorbent paper.
-
Using a suitable screwdriver, turn the shaft several times
until it moves smoothly.
-
Replace the cover and the front panel with the
11
button or the button
button.
If the setting is higher than the actual temperature of the heating water and the S.H.W is not connected, the heating
will connect and a small red indicator of the consumption of heating resistances will light up.
The heating setting can be varied between 8 and 85°C. The symbol H appears after the 85 value or before the 8
freeze mode: if the temperature falls
below 7°C, the
The optimum operation of the heating installation is achieved when an ambient thermostat or ambient chrono
act of the ambient thermostat to the terminals of the electronic card of the boiler in
The use of an external regulator is essential for the modulating syst
em to
work. Please check compatibility with thermostat manufacturer’s installation instructions.
Always provided that an ambient thermostat is connected to the boiler, this will work modulating the output,
the heat necessities of the installation. In this way, on cold days the boiler will use more power and on
This occurs automatically and requires no action on the part of the user; just follow the specific in
structions of the
The boiler has a blocking control on the circulation pump. Whenever the heating is turned off, the circulation pump
button the pump will run for 10 seconds even though the heating is
Once every month, even if the boiler or the heating is switched off, the pump will run for 10 seconds.
, the pump seizes, follow the followin
g
First disconnect the boiler from the mains
.
Take off the front panel after removing the two screws on
the upper part of the boiler to access the pump.
the figure. A small
quantity of water may appear at this moment, stop it from
splashing by using a cloth or absorbent paper.
Using a suitable screwdriver, turn the shaft several times
Replace the cover and the front panel with the
screws.

12 Gabarrón CM&CMX
6 3 4 Heater safety
FLOW FAILURE
If the error E3 appears on the display, the boiler has detected a flow failure in the heating circuit.
The possible causes of this error are:
-A blocked pump.
-All the thermostat valves are closed and there is no circuit that permits the water return.
-The circuit pressure is insufficient.
-The heating circuit is blocked.
After solving the cause of the error, the boiler must be turned off and re-started to eliminate the display message.
BOILER OVERHEATING
If the boiler detects an overheating in the heating circuit the safety thermal limiter will operate. The boiler will be
switched off.
Once the cause of the overheating has been eliminated, the thermal limiter must be re-armed.
HEATING SAFETY VALVE
A safety valve set at 3 kg/cm
2
will activate if the pressure of the heating circuit passes said value, expelling water. It
is essential that this valve runs to a drain.
To do so, unscrew the black cap and push
the small pin behind it until you hear a
click.
The limiter will not re-arm until the
temperature in the heating header goes
below 100°C or 80°C if the boiler is
adapted for radiant floor heating.

6
4 SANITARY HOT WATER (S H W )
The CMX15 and CMX18 boilers have a mixed function of modulated heating and the prepa
water. The S.H.W. function has priority over the heating and so the outputs are never added together.
A 50-
litre header tank lagged with CFC free insulation accumulates the sanitary hot water.
6 4 1 Adjusting the S H W
temperature
To switch on the S.H.W. push the
display will only show a small red dot).
When the S.H.W. is switched on, the display will show the actual temperature in the S.H.W. accumula
The setting of the S.H.W. temperature can be modified by pushing both the
adjusting the setting that flashes on the display. The modfied setting will be stored automatically afer a few seconds,
or instantly if we push the
The S.H.W. setting can be varied between 20 and 55°C.
6 4 2 Sanitary Hot Water
safety
OVERHEATING OF THE S.H.W.
If the boiler detects an
overheating
wil
l be switched off, including the heating.
Once the cause of the overheating has been eliminated, the thermal limiter of the S.H.W. must be re
To do so, unscrew the black cap and push the small pin behind it until you hear a click.
The limiter will not re-
arm until the temperature in the S.H.W. header tank has gone down to below 80°C.
S.H.W. SAFETY VALVE
A safety valve set at 7 kg/cm
2
will activate if the pressure in the S.H.W. accumulator tank exceeds said value,
expelling water. It is essential
that this valve runs to a drain.
S.H.W. RETENTION VALVE
This prevents the S.H.W. accumulator tank from emptying even when the water supply to the dwelling is cut off.
4 SANITARY HOT WATER (S H W )
The CMX15 and CMX18 boilers have a mixed function of modulated heating and the prepa
water. The S.H.W. function has priority over the heating and so the outputs are never added together.
litre header tank lagged with CFC free insulation accumulates the sanitary hot water.
temperature
To switch on the S.H.W. push the
button. This function can be switched off by pushing the same button (the
display will only show a small red dot).
When the S.H.W. is switched on, the display will show the actual temperature in the S.H.W. accumula
The setting of the S.H.W. temperature can be modified by pushing both the
button or the
adjusting the setting that flashes on the display. The modfied setting will be stored automatically afer a few seconds,
button.
The S.H.W. setting can be varied between 20 and 55°C.
safety
overheating
in the sanitary hot water tank the safety thermal limiter will operate. The boiler
l be switched off, including the heating.
Once the cause of the overheating has been eliminated, the thermal limiter of the S.H.W. must be re
To do so, unscrew the black cap and push the small pin behind it until you hear a click.
arm until the temperature in the S.H.W. header tank has gone down to below 80°C.
will activate if the pressure in the S.H.W. accumulator tank exceeds said value,
that this valve runs to a drain.
This prevents the S.H.W. accumulator tank from emptying even when the water supply to the dwelling is cut off.
13
The CMX15 and CMX18 boilers have a mixed function of modulated heating and the prepa
ration of sanitary hot
water. The S.H.W. function has priority over the heating and so the outputs are never added together.
litre header tank lagged with CFC free insulation accumulates the sanitary hot water.
button. This function can be switched off by pushing the same button (the
When the S.H.W. is switched on, the display will show the actual temperature in the S.H.W. accumula
tion tank.
button or the
button and
adjusting the setting that flashes on the display. The modfied setting will be stored automatically afer a few seconds,
in the sanitary hot water tank the safety thermal limiter will operate. The boiler
Once the cause of the overheating has been eliminated, the thermal limiter of the S.H.W. must be re
-armed.
To do so, unscrew the black cap and push the small pin behind it until you hear a click.
arm until the temperature in the S.H.W. header tank has gone down to below 80°C.
will activate if the pressure in the S.H.W. accumulator tank exceeds said value,
This prevents the S.H.W. accumulator tank from emptying even when the water supply to the dwelling is cut off.

14 Gabarrón CM&CMX
7 MAINTENANCE
Gabarrón electric boilers do not need any special maintenance, only the following should be checked:
-Check the pressure indicated by the pressure gauge frequently, ensuring that it is between 1 and 1.5 bar when cold.
- Never start the boiler when it is empty.
- Never start the boiler when the S.H.W. tank is empty; to fill it for the first time open a hot water tap and wait until
water comes out of it.
-Precaution against freezing. In dwellings that are frequently unoccupied or at risk of freezing, an anti-freeze of the
appropriate quality can be added to the water of the heating installation – the concentration must not exceed 30%
in volume.
- Clean the surfaces of the boiler with a damp cloth, having previously disconnected it from the mains. Do not use
solvents or abrasive products.
8 TROUBLESHOOTING
Problem Possible cause Solution
Boiler will not start
No current entering boiler. - Check the installation.
- Turn independent switch On. Only
CMX models. See Section 6.1.
Overheating of the heating. See Section 6.3.4.
Overheating of S.H.W. See Section 6.4.2.
S.H.W. tank empty. Open a hot water tap until the water
flows.
Error E1 Heating water out temperature
probe defective.
Contact Technical Service
Error E2 Heating water return temperature
probe defective.
Contact Technical Service
Error E3
Lack of heating water flow.
Pump blocked. Unblock – see instructions
Valves shut. Open valves.
Air in the installation. Purge the installation
Error E4
Pump blocked. Unblock – see Section 6.3.3.
Valves shut. Open valves.
Air in the installation. Purge the installation.
Error E5 Configuration error of the maximum
limited output.
See Section 5 LIMITATION OF
OUTPUT
Error E6 S.H.W. temperature probe
defective.
Contact Technical Service
Heating safety valve expels water
Excessive pressure in cold. Adjust to between 1 & 1.5bar.
Expansion vessel breakdown. Change.
Water entering heating circuit. Check filling valve.
S.H.W. safety valve expels water. Entering water pressure too high. Install a pressure reducer.
S.H.W. expansion vessel breakdown Change.
The buttons do not respond Control panel blocked See Section 10.2 BLOC ING THE
CONTROLS
Low temperature in the installation.
Heating setting low. Regulate.
Setting of ambient thermostat low. Regulate.
Resistances broken down. Contact Technical Service.
Badly calculated installation. Increase output.

15
9 TECHNICAL DATA
CMX15 CMX18 CM15 CM18
Frequency
Hz
50
50
50
50
Connection
3x400V+N~
   
Output limited to
18kW
; Maximum intensity
A
-
26.0
-
26.0
Output limited to
15kW
; Maximu
m intensity
A
2 .7
26.0
2 .7
26.0
Output limited to
13kW
; Maximum intensity
A
2 .7
-
2 .7
-
Output limited to
12kW
; Maximum intensity
A
2 .7
26.0
2 .7
26.0
Output limited to
11kW
; Maximum intensity
A
2 .7
-
2 .7
-
Output limited to
10kW
; Maximum intensity
A
2 .7
-
2 .7
-
Output limited to
9kW
; Maximum intensity
A
3.0
3.0
3.0
3.0
Output limited to
8kW
; Maximum intensity
A
3.0
-
3.0
-
Output limited to
7kW
; Maximum intensity
A
3.0
-
3.0
-
Output limited to
6kW
;
Maximum intensity
A
8.7
3.0
8.7
3.0
Output limited to
5kW
; Maximum intensity
A
3.0
-
3.0
-
Output limited to
4kW
; Maximum intensity
A
8.7
-
8.7
-
Output limited to
3kW
; Maximum intensity
A
3.0
3.0
3.0
3.0
Con
nection
230V~
single p a
se

1

1

1

1
Nominal maximum intensity
18kW
A
-
78.3
-
78.3
Nominal maximum intensity
15kW
A
65.2
65.2
65.2
65.2
Maximum converted intensity at
13kW
A
56.5
-
56.5
-
Maximum converted intensity at
12kW
A
52.2
52.2
52.2
52.2
Maxim
um converted intensity at
11kW
A
47.8
-
47.8
-
Maximum converted intensity at
10kW
A
43.5
-
43.5
-
Maximum converted intensity at
9kW
A
39.
39.
39.
39.
Maximum converted intensity at
8kW
A
34.8
-
34.8
-
Maximum converted intensity a
t
7kW
A
30.4
-
30.4
-
Maximum converted intensity at
6kW
A
26.
26.
26.
26.
Maximum converted intensity at
5kW
A
2 .7
-
2 .7
-
Maximum converted intensity at
4kW
A
7.4
-
7.4
-
Maximum converted intensity at
3kW
A
3.0
3.0
3.0
3.
0
S.H.W. available time with
15kW
min
5’49”
5’49”
-
-
S.H.W. available time with
13kW
min
6’42”
-
-
-
S.H.W. available time with
12kW
min
7’ 6”
7’ 6”
-
-
S.H.W. available time with
11kW
min
7’56”
-
-
-
S.H.W. available time with
10kW
min
8’43”
-
-
-
S.H.W. available time with
9kW
min
9’4 ”
9’4 ”
-
-
S.H.W. available time with
8kW
min
0’54”
-
-
-
S.H.W. available time with
7kW
min
2’27”
-
-
-
S.H.W. available time with
6kW
min
4’32”
4’32”
-
-
S.H.W. available time with
5kW
min
7’26”
-
-
-
S.H
.W. available time with
4kW
min
2 ’48”
-
-
-
S.H.W. available time with
3kW
min
29’04”
29’04”
-
-
S.H.W. available time with
2kW
min
43’36”
-
-
-
Weight
kg
70
70
32
32
Insulated steel heater header
   
50 litre stainless steel insulated S.H.W. ac
cumulator
No
CFC
 
-
-
Stainless steel plated resistance elements INCOLOY800
S.H.W.
 
-
-
Stainless steel plated resistance elements INCOLOY800
Heating
   
6 litre expansion vessel
   
S.H.W. 2 litre expansion vessel
 
-
-
Electronic r
egulation of heater modulation
   
Electronic regulation S.H.W..
 
-
-
Digital display
   
0
-
4 kg/cm
2
pressure gauge
   
Accelerator pump
   
Automatic purge
   
TRIACS
silent power switches
   
Heating flow detecto
r
   
00°C heating temperature limiter
   
80°C S.H.W. temperature limiter
 
-
-
3kg/cm
2
heating safety valve
   
7kg/cm
2
S.H.W. safety valve
 
-
-
S.H.W. retention valve
 
-
-
Heating circuit entry valve
 
-
-
Ambient
thermostat intake
   
Anti
-
electrolysis S.H.W. hoses.
 
-
-
included
1
using connecting bridge included

16 Gabarrón CM&CMX
Working curves of the accelerator pump.
10 ENVIRONMENTAL INFORMATION
Gabarrón 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.
11 MAIN COMPONENTS
-Heating expansion vessel 6L ref. 60091510
-S.H.W. expansion vessel 2L ref. 60091515
-S.H.W. expansion vessel hose CMX ref. 60100020
-50 L S.H.W. insulated tank ref. 60100072
-Insulated heating header tank ref. 60101700
-Thermostatic blending valve ref. 60101880
-Circulation pump 25-40 (130) ref. 60190070
-Circulation pump 25-60 (130) ref. 60190071
-Main electronic card with support ref. 60101310
-S.H.W. 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, inc. joint 140 ref. 60100750
-18 kW heating resistance, inc. joint 140 ref. 60100760
-15 kW S.H.W. resistance & S.H.W. joint ref. 60100700
-S.H.W. 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
-3kg/cm
2
heating valve ref. 60100840
-7kg/cm
2
S.H.W. valve ref. 60100850
-S.H.W. retention valve ref. 60100830
-½” shut off valve ref. 60091160
-Adhesive polyester controls cover 220x60 ref. 60100502
-Adhesive polyester controls cover 140x50 ref. 60100508
P
UPS 25-40
(kPa)
40 4
3
2
1
0
0 20 40 60 (l/min)
0
00.5 1
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
Q(m /h)
3
H(m)
20
0

17
12 WIRING

18 Gabarrón CM&CMX

19
NOTES

20 Gabarrón CM&CMX
www.elnur.es
Manufactured by:
ELNUR s.a.
Pol. Ind. “El Nogal” Villa Esther, 11
28110, ALGETE - Madrid
Customer Service Department:
[phone] (UK)
As a part of the policy of continuous product improvement, Elnur s.a reserves the right to alter
specifications without notice.
@2011 Cod. 60100005 rev.0