Marco Ecoboiler UC45 1000743 User manual

Marco Beverage Systems Ltd.
INSTRUCTIONS FOR MODEL
Ecoboiler UC45
1000743 (2.8kW)
1000744 (5.6kW)
1000744US (5.6kW)
1000745 (8.4kW)
1000753 (2.8kW)
1000754 (5.6kW)
1000755 (8.4kW)
1000743A (2.8kW)
1000744A (5.6kW)
1000745A (8.4kW)
1000753A (2.8kW)
1000754A (5.6kW)
1000755A (8.4kW)
Water pressure :5 - 50 psi (min.-max.)35 - 345 kPa (min.-max.)
E337347
NSF/ANSI 4
Marco Beverage Systems Limited.
63d Heather Road,
Sandyford Industrial Estate,
Dublin 18.
Marco Beverage Systems
Limited.
Shire House, Strixton Manor,
Strixton, Wellingborough, Northants,
NN29 7PA
Ireland Tel: [phone]
Ireland Fax: [phone]
email: [email protected]
www.marco.ie
UK Tel: [phone]
UK Fax: [phone]
email: [email protected]
www.marco-bev.co.uk

1900055 REV.8 Page 2of 17
Installation details:
Power Supply:
1000744, 100744US, 1000744A, 1000754, 1000754A (5.6kW/230V, 6.1kW/240V) - This needs to
be connected to a 30A isolator outlet.
1000743, 1000743A, 1000753, 1000753A(2.8kW, 230V) –connected via a 13A plug.
1000745, 1000745A, 1000755 , 1000755A (8.4kW, 230V) –requires a 3 Phase (3L,-N-PE)
Connection.
A qualified electrician should carry out such connections.
1000746 - The unit must be connected to a suitable three-phase power supply. A qualified
electrician must do this.
oSee Rating Plate for supply voltage and power rating.
.
Water Pressure: 5 - 50 psi (min.-max.) 35 - 345 kPa (min.-max.)
Installation procedure:
Mains water pressure required (limits): 5-50psi (35-345kPa)
Fit a stop Valve on a cold water line and attach a 3/4" BSP male fitting,
(e.g. 3/4" x 1/2" 311 or washing machine type stop valve).
For US versions use 3/8” NPT male fitting.
Connect straight tailpiece of the hose to the stop valve fitting. Make sure that the pre-
attached sealing washer is fitted.
Turn on the water to flush any impurities, dust etc. from the inlet hose and water pipe.
Allow several gallons through.
Connect right-angled tailpiece of the hose to the inlet valve of the boiler (again 3/4" BSP).
Make sure the sealing washer is fitted here also.
Turn on water and check for leaks.
If the overflow vent is plumbed it must be plumbed with a tundish device.
This equipment must be installed with adequate backflow protection to comply with all
applicable federal, state and local codes.
NOTE: In time-dispense application, supplied non-return valve may be fitted into the font
silicone connect to the water font connection. Ensure the black line on the non-return is
in the correct orientation. (Black line to the bottom)

1900055 REV.8 Page 3of 17
ECO BOILER VERSION
1000743 (2.8kW), 1000744 (5.6kW), 1000744US (5.6kW), 1000745 (8.4kW), 1000743A (2.8kW),
1000744A (5.6kW), 1000745A (8.4kW)
Operating boiler for the first time:
Setting time dispense for two left hand side pumps.
Open the service door on the front panel
Once the machine is full and heated up (the status LED glowing green) press the tactile switch
on the TOP control PCB (timer board).
Both pumps will turn on and off for 0.1s - that will be heard as a click meaning that the timer is
in the calibration mode. For 3 pump version see note 8 below.
Place an empty cup (measuring jug) underneath the font that is to be calibrated.
Press and hold a font button until you get the right amount of water. The water do not have to
be dispensed in a single push - if the button is pressed few times the overall time will be used.
Do the same action with the other font if needed. If only one font is calibrated, settings for the
other will not be altered.
The minimum time possible for the time dispense operation is 1s. Setting the dispense time for
less (quick font button click) will set the font back into "push & hold" mode.
After the volumes are set properly press the tactile button on the timer board once again.
Both pumps will turn on and off for 0.1s twice - that will be heard as a double click meaning
that the timer is out of calibration.
Please note that there is no given order which font is to be calibrated first - in fact they may be
calibrated at once or only one may be calibrated (leaving the settings of the other unaltered).
If there is no response from the user in the calibration mode (none of the font buttons pressed)
for more than 25 seconds the timer will end the calibration (double pump "click" will be heard).
The maximum allowable time of dispense is 25 seconds. Any longer times will be cut down to
25 seconds.
The resolution of the time measurement is 0.1s.
The timer board has its own clock on board therefore power line frequency is not used to
measure the time.
Setting time dispense for right hand side pump (3 font version only)
Open the service panel.
Make sure that the machine is powered, filled and heated (ready lamp green).
Press calibration tactile button on the BOTTOM control PCB for a second until status lamp
starts blinking red-green.
Set new dispense time by pressing dispense button to obtain the required output volume of
water. Button may be pressed several times –all times / volumes will be added together.
To confirm and save new value press calibration button on the PCB for a second until the
status lamp stops blinking.
Setting dispense time / volume to zero (omit step 4) will make the machine work as “push &
hold” (water dispensed as long as the button is pressed).

1900055 REV.8 Page 4of 17
Troubleshooting:
The Ready/Status light signals various errors or problems.
A cycle of red flashes indicates an error. The number of flashes in a cycle corresponds to the
symptom in the table below:
Status/Diagnostic light guide:
LED
Status
AMBER
Tank below set point temperature.
Machine is heating.
GREEN
Machine ready.
FLASHING
RED
Diagnostics error. See table below.
NOTE: It is normal for the machine to show
two flashes error (water level below elements)
once it is filling for the first time.
Note: Some of the error sequences will be displayed if there is low water
pressure. Please check that there is water pressure and that the water stop-valve
is open before calling your service agent.
No of
flashes
Symptom
Action required
2
Water level below elements. Normal
when machine first fills.
Check water pressure , if this is OK then
call service agent.
3
Temperature sensor failure (s/c)
Call service agent
4
Water not heating
Call service agent
5
Temperature sensor failure (o/c)
Call service agent
6
Machine not filling
Check water pressure.

1900055 REV.8 Page 5of 17
ECO SMART VERSION
1000753 (2.8kW), 1000754 (5.6kW), 1000755 (8.4kW), 1000753A (2.8kW), 1000754A (5.6kW),
1000755A (8.4kW)
Operating boiler for the first time:
Check that all installation procedures have been carried out.
Ensure water valve is on.
Plug boiler into 13A socket and press power button on the front of the machine marked ‘Power’.
Refer to Figure 1.
The “power on” light will glow green and the machine will fill to a safe level, above the elements,
before heating. The display will show the current water temperature and the status “ Filling…”
The “Ready/Status” light will cycle two red flashes while the machine is filling to the safe level.
After this amount of water has heated to about 92ºC the boiler will draw more water in until the
temperature drops by 1 or 2 degrees. The boiler will then heat again. This heat fill cycle
continues until the boiler is full.
While filling, the “Ready/Status” light will remain blank.
The “Ready/Status” light will glow green when the machine is both full and up to normal operating
temperature. For 10L machines allow approx 30 minutes.
The boiler is now ready for use –the display will show the Water Temperature and the status “
READY”.
The Boiler may now be used to dispense Hot Water to the preset factory settings.
o90ºC
oPush and Hold operation
oContinuous flow –no pulsing
oAuto heat Fill Mode.
Figure 1: Machine User Interface
NOTE: Because the boiler is electronically controlled no priming is necessary.
The element cannot switch on until a safe level of water is reached.
Power
Button
EcoMode
Button

1900055 REV.8 Page 6of 17
Setting time dispense for two left hand side pumps.
Open the service door on the front panel
Once the machine is full and heated up (the status LED glowing green) press the tactile switch
on the TOP control PCB (timer board).
Both pumps will turn on and off for 0.1s - that will be heard as a click meaning that the timer is
in the calibration mode. For 3 pump version see note 8 below.
Place an empty cup (measuring jug) underneath the font that is to be calibrated.
Press and hold a font button until you get the right amount of water. The water do not have to
be dispensed in a single push - if the button is pressed few times the overall time will be used.
Do the same action with the other font if needed. If only one font is calibrated, settings for the
other will not be altered.
The minimum time possible for the time dispense operation is 1s. Setting the dispense time for
less (quick font button click) will set the font back into "push & hold" mode.
After the volumes are set properly press the tactile button on the timer board once again.
Both pumps will turn on and off for 0.1s twice - that will be heard as a double click meaning
that the timer is out of calibration.
Please note that there is no given order which font is to be calibrated first - in fact they may be
calibrated at once or only one may be calibrated (leaving the settings of the other unaltered).
If there is no response from the user in the calibration mode (none of the font buttons pressed)
for more than 25 seconds the timer will end the calibration (double pump "click" will be heard).
The maximum allowable time of dispense is 25 seconds. Any longer times will be cut down to
25 seconds.
The resolution of the time measurement is 0.1s.
The timer board has its own clock on board therefore power line frequency is not used to
measure the time.
Setting time dispense for right hand side pump (3 font version only)
Press and release Power and ECO buttons simultaneously.
User setup screen will appear on the display.
Click Power button to highlight TIME DISP option.
Use ECO button to increase value (button can be held for repeated increase). Once the value
goes above the max value 99.9s it will reset to 0 and start incrementing from that value.
Setting dispense time to 0 will make the pump work in push-and-hold mode.
Once you set new dispense time use Power button to scroll through other options until you find
SAVE AND EXIT and press ECO button to accept.
Machine will reset and go back into main screen.

1900055 REV.8 Page 7of 17
Ecosmart Features :
The Ecosmart boiler has many settable features which gives the operator great
flexibility in choosing how the unit will operate. The following explains how the various
features may be changed and their function.
There are 2 Menus in the Ecosmart Boiler:
1 is to set the Boiler User settings and
1 is to set the Service/Maintanence parmeter,
HOW TO SETUP AN ECOSMART:
Smart Boiler (software Revision 1.10)
After few seconds the display will show the main screen:
Welcome screen with version number main screen
Top part of the display always shows live read-out of the tank temperature (0.5°C accuracy).
Bottom part shows current machine status.
Entering Setup Mode
To enter setup mode press power and eco buttons on the front panel at the same time.
The display will show “USER SETUP” message:
Release the buttons now to enter the user setup mode.
To enter advanced settings keep the buttons pressed until the display shows “SERVICE SETUP”
message and release them.
In both setup modes use front panel buttons to navigate the settings:
opower button to scroll through the functions,
oeco button to increase set value (press and hold for auto-repeat).

1900055 REV.8 Page 8of 17
USER SET UP OPTIONS: User Setup
Screen view
Description
Default
value
Sets new tank temperature.
Range: 60 –99.5 °C
Resolution: 0.5 °C
95.0
Sets dispense time.
Range: 0 –99.9 seconds
Resolution: 0.1 second
For PUSH & HOLD mode set to 0 (default).
00.0
Sets number of pauses during time dispense.
Range: 0 –20
If machine set as PUSH & HOLD then number
of pauses has no impact on dispense.
00
Sets pause time (same for each of the pauses).
Range: 0 –20.0 seconds
Resolution: 0.1 second
If machine set as PUSH & HOLD then time of
pause has no impact on dispense.
00.0
Press the eco button to save all the values and
reset the machine.
-

1900055 REV.8 Page 9of 17
SERVICE SETUP OPTIONS:
Screen view
Description
Default
value
No. 1 Sets and shows remaining weeks before
de-scaling is needed (“DESCALE TANK”
message on the screen).
Setting it to OFF will disable the function.
Range: 1 –60 weeks
OFF
No. 2 Sets and shows remaining litres of water
before filter change is needed (“CHANGE
FILTER” message on the screen).
Setting it to OFF will disable the function.
Range: 100 –9900 litres
OFF
No. 3 Sets the time for which the inlet opens
every time the machine needs water. It
minimises temperature fluctuations. The value
should be picked to allow 0.5 - 1°C cooling
after water intake and depends on the tank size
and element power. This is a factory setting and
should only be changed by trained personnel.
Range: 0 –20.0 seconds
Resolution: 0.1 second
3.0
(2.8kW)
6.0
(5.6kW)
9.0
(8.4kW)
No. 4 Sets the time at which machine waits for
the water too cool down after water intake.
Measured from the beginning of the water
intake. The value depends on tank size and
element power. This is a factory setting and
should only be changed by trained personnel.
Range: 0 –60.0 seconds
Resolution: 0.5 second
12.0
No. 5 “SERV PIN” limits access to SERVICE
SETUP, setting it to 0000 disables the pin
(default)
OFF
No. 6 PIN entry screen - once PIN is set and
user wants to access SERVICE SETUP this
screen will pop up; use top button to move
through positions and bottom to scroll through
the values (0 to 9 and again 0); if PIN is
accepted you will gain access to the SERVICE
SETUP, if PIN is rejected machine will reset
itself.
No. 7 Sets the mode the machine works in:
HEAT FILL (default –minimises
temperature fluctuations),
CONT FILL (continuous fill –makes sure
the tank is always full but temperature
may vary),
HEAT
FILL

1900055 REV.8 Page 10 of 17
COOL FILL (allows cooling but reduces
tank size by using ECO mode),
MANUAL (manual filling).
See further explanations pg 8
No. 8 Sets temperature units on screen.
Celsius
No.9 This sets max limit of the temperature that
user can set in USER SETUP; max value is
98.5 deg C
Celsius
No.10 Press the eco button to save all the
values and reset the machine.
-
DISPLAY INFORMATION DESCRIPTIONS:
Status
Description
BOILER OFF
Machine off. Display backlight off but temperature read-
out still working.
FILLING ...
Water level below low level probe. Machine is filling
automatically. Status LED –2 red blinks.
FILL THE TANK
Water level below low level probe. Machine has to be
refilled manually (shown only in MANUAL mode).
Status LED –2 red blinks.
WAIT ...
Water is being heated. Dispense valve disabled.
BOILER READY
Water is up to the temperature and can be used. Note that
this only means that the tank is heated and not that it is
full.
Status LED –green.
DISPENSE
Water is being dispensed. If machine is set to time
dispense –there will also be a progress bar drawn
underneath. Dispense can always be cancelled by clicking
the dispense button again.
COOLING ...
Machine was set by the user to a lower temperature than
the current tank temperature and is trying to cool down by
taking in more cold water. This process may take between
20 seconds to a few minutes depending on tank size and
temperature difference. Works only in COOL FILL mode.
DISPENSE WATER
TO COOL THE TANK
Machine can not take more cold water to cool the tank
because it is full. Water needs to be dispensed to allow
room for more cold water to come in and finish cooling
process.

1900055 REV.8 Page 11 of 17
DESCALE TANK
Descale timer elapsed. Time to descale the tank.
CHANGE FILTER
Litres output exceeds set value.
Time to change the water filter.
CHECK LOW PROBE
Low water level probe broken (disconnected). Machine
detects high level probe signal but can not detect low level
one. Filling is disabled. Status LED –1 red flash.
THERMISTOR S/C
Temperature sensor (thermistor) is short circuited.
Dispense and heater disabled. Status LED –3 red
flashes.
ELEMENT FAILURE
Heating element is broken. Error is triggered when after
20 minutes of heating and not taking in water temperature
in the tank fails to increase.
Dispense is disabled. Status LED –4 flashes.
THERMISTOR O/C
Temperature sensor (thermistor) is disconnected.
Dispense and heater disabled. Status LED –5 red
flashes.
LOW PRESSURE
Incoming water pressure too low. The error will be reset
after water supply restores.
All boiler functions are active. Status LED –6 flashes.
COMM ERROR
Display board lost communication with boiler PCB (can
not receive serial data about temperature and probes).
All actions cancelled.
Modes of Operations [ Service setup setting 5 ]:
Modes of OPERATION- This boiler can operate in 3 different modes.
HEAT FILL –Standard operation the boiler will take in water until the
temperature in the tank drops, the inlet will close and the heating element is
activated. When the temperature reaches the set temperature the inlet will
reopen to take in more water. This cycle will continue until the Tank is Full.
This mode is used to ensure that the water temperature is controlled within set
values.
CONTINUOUS MODE –In this mode the boiler will take in water and activate
the element until the tank is full and the temperature has reached the set
temperature. Typically used in high demand situations where the temperature
stability is not primary concern.
COOL MODE –In this mode the temperature can be adjusted up or down
[function 1.] while in operation. Depending on the water level in the tank
selecting a lower temperature will cause either a message to “DISPENSE
WATER TO COOL THE TANK” or will automatically take in cooler water to
reduce the temperature to the new set temperature. In applications where
selecting different temperatures frequently is required this Cool Mode is best
selected.
Note in the Cool Mode will cause the 10L boiler to operate as a 5L boiler and
cause the 4L boiler to operate at 2L.
MANUAL FILL –if the boiler is not plumbed into a water supply the operator must
select Manual Fill mode for best operation of the boiler. In this mode the water is
added manually by the operator.

1900055 REV.8 Page 12 of 17
ECO Mode Operation:
Note In the COOL FILL mode [ see Service setup setting 5] the ECO Mode is
automatically selected.
All ECO Boilers use high grade insulation and it is applied to give a significant energy usage
improvement over a standard water boiler.
The under counter range incorporates a ½ tank ‘ECO mode’ function.
To enable the ‘ECO Mode’ press the button located below the ‘Ready’ indicator so that the leaf
symbol illuminates green.
This mode saves energy by mimimising the energy wasted during machine down-time.
NOTE: The ECO mode is most effective in installations where the machine has a regular ‘off’
period.
To achieve the most benefit from the energy saving ‘ECO Mode’ on your ECO boiler unit (10L
variants only), the following method should be employed:
oTowards the end of the boilers operating period for a given day, switch the machine to ECO
Mode. Whilst maintaing water at 96oC, the machine tank will slowly drop to half full, where it
will remain.
oAt the end of the machines operating period it should the be turned ‘off’.
oDuring the ‘off’ period as there is less water in the tank there will be less energy lost to the
surrounding environment resulting in an energy saving.
To disable simply press the ‘ECO Mode’ button again so that the leaf symbol is not illuminated
TROUBLESHOOTING:
The Ready/Status light signals various errors or problems. A cycle of red flashes indicates an error.
The number of flashes in a cycle corresponds to the symptom in the table below:
Status/Diagnostic light guide:
No of
flashes
Symptom
Action required
2
Water level below elements. Normal
when machine first fills.
Check water pressure , if this is OK then call
service agent.
3
Temperature sensor failure (o/c)
Call service agent
4
Water not heating
Call service agent
5
Temperature sensor failure (s/c)
Call service agent
6
Machine not filling
Check water pressure, if OK then call service
agent.

1900055 REV.8 Page 13 of 17
Access:
Slide down panel and
pull out from bottom

1900055 REV.8 Page 14 of 17
Cleaning:
The exterior of these machines may be cleaned with a damp cloth and a light detergent. Do not
use abrasive cloths or creams, as this will spoil the finish of the machine. Do not use a water jet
or spray. Beware of accidentally operating the draw off tap when cleaning the front of the
machine.
Limescale:
In common with all water boiler manufacturers, service calls resulting from limescale are not
covered by warranty. Fitting a scale reducer is recommended, especially in hard water areas.
This can reduce the build-up of scale but may not stop it altogether. The frequency that
descaling is required depends on the local water supply; hard water areas need more attention.
A scale reducer can reduce the build up of scaling, but may not stop it altogether. Descaling of
the machine should ideally be carried out by qualified service personnel.
Cautions and safety tips:
This appliance must be earthed.
Risk of flooding. The hose supplied with this unit is non-toxic food quality tested to 190psi.
However, a hose is not a permanent connection. It is, therefore, advisable to switch off boiler
and close the stopcock valve when boiler is not in use, e.g. overnight, weekends etc.
Risk of scalding. Beware of accidentally pressing the font buttons while cleaning the fonts.
The utmost care has been taken in the manufacture and testing of this unit. Failure to install,
maintain and / or operate this boiler according to the manufacturer’s instructions may result in
conditions that can cause injury or damage to property. If in any doubt about the serviceability of
the boiler always contact the manufacturer or your own supplier for advice.
Maintenance:
Marco machines have been designed to give many years of trouble free service. The only regular
maintenance required is occasional de-scaling.
Isolate machine from power supply.
Isolate machine from water supply.
ALLOW TO COOL COMPLETELY!
Remove the front panel and drain water from machine using the detachable silicon hose
running down the front side of the machine.
Remove lid.
Remove as much scale as possible by hand, paying particular attention to level probes
(White plastic with steel tab). Be very careful not to damage any attachments.
Use ScaleKleen, Marco part No. 8000270 or similar. Follow instructions carefully.
Thoroughly clean and flush the machine before re-use.
Follow installation and first time operation instructions

1900055 REV.8 Page 15 of 17
Connections to an Undercounter 45 style unit.
Font Connection:
Figure shows the typical connection method for connecting font(s) to the UnderCounter Boiler. Refer
to the Font instructions which accompanied the Font unit for more details.
Standard Fonts:
Connect the clear hose to the water connection, shown above. Open ball valve fully.
Connect the cable from the font to the electrical connection, as above.
Recirculation connection must be closed at all times.
Recirculating Fonts:
Insure your boiler is configured for a recirculating font.
Connect grey hose from font to the recirculation connection, shown above.
Connect the clear hose to the water connection, shown above. Open ball valve fully.
Connect the cable from the font to the electrical connection, as above.
Make sure the two hoses are straight and free of kinks.
Adjust the ball valve on the recirculating connection to get desired flow rate from the font.
Font
Recirculation
Connection
On/Off
Switch
Font Water
Connection.
Vent may be plumbed
to a drain –however
there must be an air
gap to prevent the
possibility of a blocked
drain flowing into the
boiler.
Fonts will vary.
Depending on font the type
the drip tray will either have
to be manually emptied
or
Connected to a drain via
drip tray outlet.
2- wire
Electrical
Connection
Font to Boiler
Only machines
with the “A” suffix
will have 3 font
connections.

1900055 REV.8 Page 16 of 17
Connections 1000744US
Font Connection:
Figure shows the typical connection method for connecting font(s) to a US under counter boiler. Refer
to the Font instructions which accompanied the Font unit for more details.
Standard Fonts:
Connect the clear hose to the water connection, shown above.
Connect the cable from the font to the electrical connection, as above.
Fonts will vary.
Depending on font the type
the drip tray will either have
to be manually emptied
or
Connected to a drain via
drip tray outlet.
Font Water
Connection.
2- wire
Electrical
Connection
Font to Boiler
On/Off
Switch
Vent may be plumbed
to a drain –however
there must be an air
gap to prevent the
possibility of a blocked
drain flowing into the
boiler.

1900055 REV.8 Page 17 of 17