Ideal Boilers Maximiser SE User manual

USER’S INSTRUCTIONS
Natural gas only
INSTALLER:
TELEPHONE:
705.276A-3233 11-2000
Maximiser SE

INTRODUCTION
It is essential that the instructions in this booklet
are strictly followed, for safe and economic opera-
tion of the boiler.
Gas Safety (Installation & Use) Regulations
1994, amendments 1996, or the rules in
force.
In your own interest, and that of safety, it is
the law that this boiler must be installed by a
registered installer, in accordance with all
national and local regulations.
The installation of the boiler MUST also be in
accordance with the latest I.E.E. Wiring
Regulations, local building regulations, bye-
laws of the local water authority, the building
regulations and the Building Standards
(Scotland) and any relevant requirements of
the local authority.
ELECTRICITY SUPPLY
This appliance must be efficiently earthed
Supply: 230 V ~ 50 Hz.
The fusing should be 3A.
Connection must be made in a way that
allows complete isolation of the electrical
supply such as a double pole switch having a
3mm (1/8”) contact separation in both poles,
or a plug and socket, serving only the boiler
and system controls. The means of isolation
must be accessible to the user after installa-
tion.
IMPORTANT NOTES
a. This appliance must not be operated without
the casing correctly fitted and forming an
adequate seal.
b. If the boiler is installed in a compartment
then the compartment MUST NOT be
used for storage purposes.
c. The ventilation provided for the boiler
during installation MUST NOT be blocked,
and a check should be made periodically
that the ventilation areas are free from any
obstruction.
d. If it is known or suspected that a fault
exists on the boiler then it MUST NOT be
used until the fault has been corrected by a
CORGI registered installer.
e. Inflammable materials must not be placed
in close proximity to the appliance.
Materials giving off flammable vapours must
not be stored in the same room as the
appliance.
f. Under NO circumstances should any of the
sealed components on this appliance be
used incorrectly or tampered with.
CLEANING
For normal cleaning simply dust with a dry
cloth.
To remove stubborn marks and stains, wipe
with a damp cloth and finish off with a dry
cloth.
Do NOT use abrasive cleaning materials.
MAINTENANCE
The appliance should be serviced at least
once a year by a CORGI registered installer.

DISPLAY
The code on the display indicates the opera-
ting condition of the boiler. It enables you to
make an initial diagnosis. During normal ope-
ration, one of the following codes is displayed:
0Unit is ready for operation
-. Unit is heating the central heating
installation
=. Unit is heating the hot water tank
See table 1 for further explanation of other
display codes that may be displayed.
DISPLAY CODES
The code in the display indicates the opera-
ting condition of the boiler. Pressing the ser-
vice button, will make a second code appear.
The combination of both codes provides
detailed information about the operating
condition of the boiler.
With respect to the behaviour of the unit
and the corresponding codes, two situations
can be distinguished:
1. Normal operating condition
The code is not flashing: no malfunction.
The boiler is standby or operational. The
meaning of the codes that can appear during
normal operation, can be found in table 1.
2. Malfunction with inoperative unit
The display code flashes: a malfunction has
occurred and the boiler is inoperative.
Write down the display code and the corre-
sponding service code.
Press the reset button. If the malfunction
remains, consult your installer.
Table 2 gives you more information about
the cause of the malfunction.
SERVICE
When this button is pressed, the display
shows an additional service code in the form
of a capital letter. This letter provides addi-
tional information about the cause of the
current malfunction. Together, the display
and service code are the key to the malfunc-
tion diagnosis.
Report both codes when requesting help
from an installer, if a malfunction has occur-
red. See table 1 for further explanation of
the display and service codes.
RESET
Pressing the reset button restarts the boiler.
Note that a reset will remove the display
and service codes. Therefore write them
down before pressing the reset button.
Occasional malfunctions and flashing codes
can often be remedied by pressing the reset
button for one second.
PUMP
This switch is used to set the finishing time
of the pump.
Position I: finishing time is 4 minutes (only
for central heating). This position is recom-
mended during summer and when using a
room thermostat.
Position II: finishing time is 24 hours (only
for central heating). This position is recom-
mended when using a weather dependant
control or when part of the installation is in
danger of freezing.
Type UBA 4000
Max. safety time: 10 sec.
220 - 240 Vac 50 Hz
DIN DVGW nr: 93.01bNF "S"
CE REG.NR. 63 A05280
12
pumppump
serservicevice
displadisplay
reseteset
Control panel 211077
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TABLE 1. CODES NORMAL OPERATING CONDITION
displaycode
display code
service-code operating condition of the boiler
Start-up of the boiler
Restart of boiler after reset
Check unit data at start-up
Check unit data
Anti fast-cycle program operative
Waiting for switching of three-way valve
Standby: no heat demand
Ignition
Purging for 15 sec.
Central heating water temperature is higher than set; boiler is waiting
Code remains briefly; boiler is adapting
Boiler is operative for central heating
Boiler is operative for hot water
TABLE 2. MALFUNCTION CODES WITH INOPERATIVE BOILER
cause of the malfunction
Central heating water temperature or flow is not correct
Temperature safety device is switched on
Burner does not ignite or has failed
Control panel possibly defective
Defective cable connection
IRT 30 Room Thermostat possibly defective
Control panel possibly defective
Power supply malfunction
BLANK
The manufacturer of the central heating boiler accepts no liability for damage caused by the
lack of observation of the user's instructions.
705.276 [b.w.] 12/4/00 13:26 Pagina 2

STARTING THE BOILER
To achieve this, perform the following actions:
1. Check the reading of the pressure gauge. If the
pressure is below 1 bar, the installation has to be
refilled first.
2. Open the gas cock on the gas pipe below the
unit. De-aerate the gas pipe first, if any air is pre-
sent.
3. Turn power on to the boiler.
4. Set the room thermostat to a higher setting than
the ambient room temperature.
5. The unit will initiate the start procedure after 30
seconds. If air is still present in the gas pipe, the
unit will indicate an ionisation malfunction.
Restart the unit using the reset button. Repeat
this action several times, if necessary.
6. Set the room thermostat to the desired room
temperature.
When finished, the boiler will operate automatically
for both the central heating installation and the hot
water supply.
Shutting down the boiler
It is recommended to keep the boiler in operation,
especially during danger of freezing. If the premises
are left for a considerable period of time, you
should set the room thermostat in the lowest
position.
To completely put the boiler out of operation,
carry out the following:
1. Close the gas valve under the unit.
2. Turn ofF the power to the boiler.
If the boiler is completely shut down when there is
danger of freezing, the installation must be totally
drained.
Refer to the corresponding section or consult your
installer.
Maximiser condensing boilers
The boilers are equipped with a unique heat
exchanger, that ensures that the gases released
after combustion give off as much heat as possible.
Because of this the condensing boilers have an
efficiency of more than 90%. The combustion gases
condense in the heat exchanger; therefore a
condense drain is required.
The completely pre-mixed burner construction
ensures a very low NOx- and CO-emission.
Modulating burner
The boilers have a modulating burner construction.
This means that the temperature of the central
heating water can be accurately controlled by
adapting the capacity of the boiler to the desired
temperature.
If a lot of heat is required, the unit starts up to
heat the central heating water. In the unit, a sensor
is installed that measures the central heating water
temperature. As soon as this temperature has
reached the required value, the burner will start
burning at a lower level, thus the desired tempera-
ture is maintained. When heat is no longer
required, the unit switches off, while the pump
keeps running for a certain period of time.
Control panel
The operation of the boiler is completely controlled
and checked by a built-in micro-computer: in the
control panel. As well as ensuring an optimal reac-
tion of the unit to a heat demand, the control panel
also registers when a malfunction occurs, in order to
switch off the unit.
A display on the control unit indicates what is
happening at any given moment. If a malfunction
occurs, the control panel will first try to solve the
malfunction by itself. If the control panel is unable to
do so, the unit will be switched off and a code will
appear on the display, indicating the problem.
Based on this code, the installer can find the cause
of the malfunction and solve it.
The control panel is equipped with a number of push
buttons and adjustments. Their function is described
in the relevant sections of this user's instructions.
Room thermostat
The unit can operate with all common volt free or
24V room (clock) thermostats.
Option kits available:
• Remote indication alarm kit.
• Cascade control (MBC 5) for multiple
boiler installations.
Ask your installer for details of the above options!
Figure 1 Pressure/temperature gauge
The manufacturer of the central heating boiler accepts no liability for damage caused by the
lack of observation of the user's instructions.
211035
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Customer Care & Technical Support
Please use the following numbers for speedy assistance.
Ideal parts Tel. : [phone]
Tel. : [phone]
Customer care &
Technical support Tel. : [phone]
Tel. : [phone]
Publications / literature Tel. : [phone]
Caradon Ideal Ltd. pursues a policy of continuing improvement in the design and
performance of its products.
The right is therefore reserved to vary the specifications without notice.
CARADON IDEAL LTD
P.O. Box 103, National Avenue
Kingston Upon Hull
East Yorkshire, HU5 4JN
Telephone: [phone] Fax: [phone]
Registration No. London 322 137
Registered office: National Avenue
Kingston Upon Hull, East Yorkshire, HU5 4JN
A subsidiary of Caradon p.l.c.
211035
705.276A-3233 11-2000
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