THERMOSTAHL ESR 24 User manual

CE 0694
User Manual
for model
ESR 24
Wall mounted instantaneous combi boiler
room sealed chamber

USER INSTRUCTIONS
1
BOILER OPERATING INSTRUCTIONS
1. General warning
Make sure that the authorised technician who tested the boiler has stamped the guarantee booklet.
The installation, first start-up, regulation and maintenance operations must be carried out exclusively by qualified
personnel. Incorrect installation can cause damage to property and injury to persons or animals, for which the
manufacturer will not be held responsible.
During the installation, the technician must carry out the following checks:
■The data on the data plate must correspond to that of the mains supply networks (gas, electricity, water);
■The boiler must be regulated according to its designed use and performance;
■The flue gas exhaust and combustion air intake system must be correctly installed and operational;
■The exhaust gas discharge and ventilation systems must comply with the requirements of national and local
standards regardless of whether the boiler is installed indoors, outdoors or in its own cabinet (see section
“Reference standards”).
User general warnings:
If there is any doubt as to whether the appliance has been tested by an authorised technician, do not
attempt to start it. All maintenance and gas conversion operations MUST BE CARRIED OUT BY
PROFESSIONALLY QUALIFIED PERSONNEL.
Should any part of the boiler freeze-up, do not attempt to light it under any circumstances, but instead
call the Service Centre immediately.
The appliance’s combustion system must be checked every two years. This check includes testing the
efficiency of the boiler and must be carried out by authorised personnel possessing the qualifications
as required by current law.
Do not obstruct the ventilation openings in rooms where there are gas-burning appliances installed
(boiler, cooker, etc.)
Do not allow the appliance to be used by persons (including children) with reduced physical, sensory,
mental capabilities or with lack of experience and knowledge unless they have been viewed or
educated on the use of the appliance by the person responsible for its safety or anyone unfamiliar
with its operation;
The installation, operation and maintenance manual forms an integral and essential part of the
product and must be kept near the appliance always.
If you smell gas …
DO NOT ACTIVATE ANY ELECTRIC SWITCHES, TELEPHONES OR ANY OTHER DEVICE THAT MAY
GENERATE ELECTRICAL DISCHARGES OR SPARKS.
OPEN DOORS AND WINDOWS IMMEDIATELY TO CREATE A CURRENT OF AIR THAT WILL RAPIDLY
CLEAR THE ROOM.
CLOSE ALL GAS TAPS AND VALVES.
CALL FOR PROFESSIONALLY QUALIFIED PERSONNEL.

USER INSTRUCTIONS
2
Boiler controls - Control panel
LEGEND
1. TEMPERATURE, ERROR CODE AND OPERATING STATUS DISPLAY
2. HEATING TEMPERATURE CONTROL KNOB
3. D.H.W TEMPERATURE CONTROL KNOB.
4. INFO BUTTON: PRESS ONCE TO DISPLAY TEMPERATURES; KEEP IT PRESSED FOR 5 SECONDS (IN OFF MODE)
TO DISPLAY THE LAST 5 ERRORS.
5. SERVICE BUTTON / RESET.
6. SUMMER, WINTER OR SUMMER/WINTER MODE SELECTION BUTTON / OFF.
7. TERMINAL BOARD FOR EXTERNAL WIRING.
Fig. 1
7
65
4
3
2
1

USER INSTRUCTIONS
3
Starting - up the boiler
Open the gas Isolation valve located under the
boiler.
Press the button 6 (fig. 1); The boiler will
light automatically (with the WINTER mode
selected and room thermostat connected).
Check that there are no flashing numbers on
the display 1(see error codes). If code H2O
appears on the display 1this denotes that
there is no water in the boiler. Consequently,
fill the system as described in section “Filling
the system”.
■“SUMMER” mode
To switch boiler operation to “SUMMER” mode,
press button 6(see fig. 1). The boiler will only work for the D.H.W system. The “SUMMER” mode setting of the
boiler is signalled by the symbol lit continuously on the control panel.
The automatic ignition system will light the burner every time there is a demand for domestic hot water. In this case,
the symbol on the control panel will flash.
■“WINTER” mode
To switch boiler operation to “WINTER” mode, press button 6(see fig. 1). The boiler will only work for the central
heating system. The “WINTER” mode setting of the boiler is signalled by the symbol lit continuously on the
control panel.
The automatic ignition system will light the burner every time there is a demand for room heating. In this case, the
symbol on the control panel will flash.
■“SUMMER-WINTER” mode
To switch boiler operation to “SUMMER/WINTER” mode, press button 6(see fig. 1). The boiler will work for both
central heating/D.H.W systems. The “SUMMER/WINTER” mode setting of the boiler is signalled by the symbols
lit continuously on the control panel.
The automatic ignition system will light the burner every time there is a demand for room heating or domestic hot
water, the functioning is signalled by the symbols flashing continuously on the control panel.
■Regulating the heating temperature
The heating temperature is regulated by knob 2 (see fig.1).
Rotating the knob anticlockwise reduces the temperature.
Rotating the knob clockwise increases the temperature.
The range of temperature settings for the central heating runs from a minimum of 30°C to a maximum of 80°C,
or, in the case of low temperature operation, from a minimum of 25°C to a maximum of 59°C.
■D.H.W. temperature control
The domestic hot water temperature is regulated by knob 3 (see “Control panel”).
Rotating the knob anticlockwise reduces the temperature.
Rotating the knob clockwise increases the temperature.
The range of temperature settings for the domestic hot water runs from a minimum of 35°C to a maximum of
60°C.
Fig. 1
7
65
4
3
2
1

USER INSTRUCTIONS
4
3
GREEN AREA
1.2 bar
0.5 bar
1.5 bar 3 bar
2
RM
■Topping-up the system with water
The water pressure in the central heating circuit must be
checked during the entire period of operation of the boiler.
In this respect, the reading on the pressure gauge M(fig.
2), located on the lower part of the boiler, must not be less
than 1 bar.
If there is insufficient water in the boiler, the code H2O will
flash on the display (see fig 2).
To bring the system back up to pressure, open the
external filling tap R (fig. 2) and use the pressure gauge M
(fig. 2) to check that the systems pressure reaches the
middle of the green area (equal to 1,2 bar, see fig. 3) and
that the code H2O lights up.
When the operation is complete, close the fill tap.
Diagnostics –Error codes:
This paragraph contains a list of error codes that the
boiler may generate on the display 1 (see “Control panel”)
together with the relative indications and the operations
that the user can carry out to reset the boiler.
If the problem re-occurs after the following
actions have been taken, call an authorised
Service Centre.
_E01_ Ionisation block
Code E01 lit continuously on the display.
Check that the gas valve on the boiler and gas meter are open and that there is gas in the mains supply (or in
the tank).
Switch off then switch on the appliance using switch 1(see “Control panel”) on the control panel.
When the error code on the display disappears, the boiler will restart.
If the problem persists, Call the Service Centre.
_E02_Safety Thermostat tripped
Code E02 lit continuously on the display. Call the Service Centre.
_E03_Air Pressure Switch Tripped
Code E03 lit continuously on the display. Call the Service Centre.
_h2o_Water Pressure Switch tripped
Code H2O lit continuously on the display.
Check the water pressure in the central heating circuit. The reading on the pressure gauge M(see fig. 3),
located on the lower part of the boiler, must not be less than 1 bar .
If the pressure is less than 1 bar, top-up the system as described in paragraph “Filling the system”.
The boiler will restart automatically.
If the problem persists, Call the Service Centre.

USER INSTRUCTIONS
5
_E05_ Heating Sensor malfunction
Code E05 lit continuously on the display. Call the Service Centre.
E06 D.H.W Sensor Malfunction
Code E06 lit continuously on the display. Call the Service Centre.
E17 Modulator out of order
Code E17 lit continuously on the display. Call the Service Centre.
_E22_Parameter programming request
Code E22 lit continuously on the display. Call the Service Centre.
_E77_Electric power supply out of the operation range
Code E77 lit continuously on the display. Call the Service Centre.
N.B. If the boiler is to be left unused for a long period of time, the user must do one of the following:
Make the boiler safe by disconnecting all the power supplies (electricity and gas), and draining the heating
system.
Leave the boiler in standby, leaving the electricity and gas supplies connected and, consequently the anti-freeze
function.
Maintenance
In order to ensure that the boiler operates efficiently and safely, it is recommended that the appliance is inspected
by a suitably competent technician at least once a year.
A regular maintenance is always source in management system savings.
Recycling
The appliance packaging is mainly made of
recyclable materials.
The appliance and all its accessories must be
disposed of appropriately differentiated
in compliance with the relevant standards.
The symbol indicates the inability to dispose of
this product as domestic waste.
The correct disposal of this product will help to
prevent potential negative consequences for the
environment and people health.

THE TECHNICAL DATA AND MEASUREMENTS ARE PROVIDED FOR
INFORMATION PURPOSES ONLY AND ARE NOT BINDING. THE
COMPANY RESERVES THE RIGHT TO APPLY VARIATIONS WITHOUT
PRIOR NOTIFICATION. NEITHER WILL THE COMPANY BE HELD
RESPONSIBLE FOR ANY INACCURACIES IN THIS HANDBOOK
DERIVING FROM PRINTING OR TRANSLATION ERRORS. E+OEALL
RIGHTS RESERVED. NO PART OF THIS DOCUMENT MAY BE
REPRODUCED, MEMORISED IN ANY FILING SYSTEMS OR
TRANSMITTED IN ANY FORM WHATSOEVER, INCLUDING
ELECTRONIC, MECHANICAL, PHOTOCOPIES, RECORDINGS OR ANY
OTHER MEANS WITHOUT THE COMPANY’S PRIOR WRITTEN
APPROVAL.