Glowworm 100sxi User manual

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www.glow-worm.co.uk
Tobeleftwiththeuser
Instructions for Use
High Efficiency System Store
Ultrapower sxi

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WARNING
GAS LEAK OR FAULT
Turn off the gas emergency control valve immediately. Eliminate all sources of ignition, i.e.smoking,
blowlamps, hot air guns etc. Do not operate electrical lights or switches either on or off.
Open all doors and windows, ventilate the area.
METAL PARTS
This boiler contains metal parts (components) and care should be taken when handling and cleaning,
with particular regard to edges.
SEALED COMPONENTS
Under no circumstances must the user interfere with or adjust sealed parts.
Glow-worm service call: 01773 828100 Technical helpline: 01773 828300
General and Sales enquiries Tel: [phone] Fax: [phone]

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100sxi
G.C. No. 41-019-09
G.C. No. 41-019-10
13146
Position of name badge
170sxi
The model type label is
positioned on the lower
front panel top edge.

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Contents Page
Important Information 5
Boiler Design & Clearances 6
Boiler Safety Devices 7
Servicing, Maintenance & Spare Parts 8
User Control Panel 9
Lighting the Boiler 10
Adjusting Temperature 11
Setting the Clock 12
Setting the Programmer 13
Advancing Programmer 14
Fault Finding 15
These instructions are an integral part of the boiler and must, to comply with the current issue of the Gas
Safety (Installation and Use) Regulations, be left with the user.
Please read these instructions and follow them carefully for the safe and economical use of your boiler.

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Gas Safety (Installation and Use) Regulations
In your own interests and that of safety, it is the Law that ALL
gas appliances have been installed by a competent person
in accordance with the current issue of the regulations.
Gas Category
This boiler is for use only on G20 natural gas.
Testing and Certification
Thisboileristestedandcertificatedforsafetyandperformance.
It is, therefore, important that no alteration is made to the
boiler, without permission, in writing, by Glow-worm.
Any alteration not approved by Glow-worm, could invalidate
the certification, boiler warranty and may also infringe the
current issue of the statutory requirements.
Important Information
Electrical Connection
Boiler
The boiler MUST be earthed.
TheboilerMUSTbeconnectedtoapermanent230Vac,50Hz
supply, fused at 3A.
Connection of the whole electrical system of the boiler,
includinganyheatingcontrols,totheelectricalsupplymustbe
through one common isolator.
The colours of three core flexible cable are, blue - neutral,
brown - live, green and yellow - earth.
Immersion Heater
The immersion MUST be earthed.
TheimmersionMUSTbeconnectedtoapermanent230Vac,
50Hz supply, fused at 13A.

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Boiler Design & Clearances
Description
TheUltrapowersxiisahighefficiencycentralheatingappliance,
closecoupledtoanun-ventedcylinder.Thepump,expansion
vesselsand associatedsafety devicesare allfitted withinthe
appliance,providingaoneboxsolutionforpropertiesrequiring
a high domestic hot water demand. The intelligent control
system is designed for both simple operation and maximum
control. Once the controls are set the boiler will operate
automatically.
Additionally an immersion heater is supplied fitted to the
cylinder. It is intended for use as a back up should the boiler
fail, it will not give optimum DHW performance.
Pluming from flue terminal
Like all condensing boilers it will produce a plume of
condensation from the flue terminal in cool weather. This is
duetothehighefficiencyandhencelowfluegastemperature
of the boiler. It is normal and not a fault indication.
Compartment or Cupboard Installations
Ventilation is not required for compartment or cupboard
installations. Do not use the compartment or cupboard for
storage.
Diagram 1
13241

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Boiler Safety Devices
Boiler Shutdown
The boiler software is designed to recognise the potential for
an overheat lockout and will shutdown before this happens.
To restart the boiler, press the reset button, see diagram 2.
If the boiler fails to resume normal operation and all external
controlsarecallingforheat,thencallyourInstallation/Servicing
company or Glow-worm service.
Frost Protection
Withthe gas andelectric suppliesON and irrespectiveof any
room thermostat setting, the integral frost protection device
will operate the pump when the temperature of the boiler
water falls below 8OC.
The pump will stop after 10 minutes if the temperature is
higher than 10OC or has already reached 35OC.
Theburnerwillonlyactivateiftheboilertemperaturedoesnot
reach 10OC after 30 minutes or at any time if the temperature
drops to 5OC.
The burner will switch off when the temperature reaches
35OC.
NOTE: Any other exposed areas of the system should be
protected by a separate frost thermostat.
Cylinder Protection
The cylinder also has integral frost protection and should the
temperature fall below 10°C the cylinder water will be heated
to 15°C.
Condensate Drain Blockage
Asasafetyfeaturetheboilerwillstopworkingifthecondensate
drain becomes blocked. During freezing conditions this may
be due to the forming of ice in the condense drain external to
thehouse. Releaseaniceblockagebytheuseofwarmcloths
on the pipe. The boiler should then restart. Contact your
Installation/Servicing company or Glow-worm service if the
fault persists.
Disinfection Cycle
The cylinder has a built in disinfection cycle which raises the
water temperature to 70OC for 1 hour every Wednesday at
2.00am.
Safety Discharge Valves
Safety discharge valves and discharge pipes are fitted to the
boiler. These valves MUST NOT be touched. If there is any
discharge from the pipes, switch off the boiler electrical
supply, then call your Installation/Servicing company or
Glow-worm service.

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General Note
Servicing/maintenanceshouldbecarriedoutbyacompetent
person in accordance with the rules in force in the countries
of destination.
If this boiler is installed in a rented property in the UK there is
a duty of care imposed on the owner of the property by the
current issue of the Gas Safety (Installation and Use)
Regulations, Section 35.
Servicing
To ensure the continued efficient and safe operation of the
boiler it is recommended that it is checked and serviced at
regularintervals.Thefrequencyofservicingwilldependupon
the site conditions and usage, but in general, once a year
should be enough.
To obtain service, please call your installer or Glow-worm’s
own service organisation using the telephone number on the
inside front cover of this booklet.
Cleaning
Theboilercasingcanbecleanedusingamildliquiddetergent
with a damp cloth, then a dry cloth to polish.
Donotuseanyformofabrasiveorsolventcleanerasyoumay
damage the paintwork.
Servicing, Maintenance & Spare parts
Frost Protection
Ifthemainselectricityandgasservicesaretobeturnedofffor
any long periods during severe weather, it is recommended
thatthewholesystem,includingthe boiler,shouldbedrained
to avoid the risk of freezing.
Sealed Water Systems
The draining, refilling and pressurising MUST be carried out
by a competent person, contact your Installation/Servicing
company or Glow-worm Service.
Spare Parts
REMEMBER, When replacing a part on this boiler, use only
sparepartsthatyoucanbeassuredconformtothesafetyand
performance specification that we require. Do not use
reconditioned or copy parts that have not been clearly
authorised by Glow-worm.
If replacement parts are required contact Glow-worm’s own
service organisation using the telephone number on the
inside front cover of this booklet.
Please quote the name and model of the boiler.
Thenamebadgeis on the topfrontcase,and the model label
is on the top edge of the bottom front panel, pull the panel
forward slightly to reveal the label.
If in doubt seek advice from the local gas company or Glow-
worm’sownserviceorganisationusingthetelephonenumber
on the inside front cover of this booklet.

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User Control Panel
General Description
The User Control panel consists
of three toggle buttons, a reset
button and display, which will
indicate with symbols the status of
the boiler, refer to diagram 2.
Diagram 2
13176
Control Panel
MODE
PROG
Eco Ext
SYMBOLS DISPLAYED ON THE LCD AND DESCRIPTIONS
Will be displayed when domestic hot
water temperature is less than 50
o
C
System Pressure
Max burner display
Intelligent control - (Optional)
Outdoor sensor - (Optional)
Min burner display
Temperature
Appliance OFF
Central Heating
Timed Mode
Programmer
Adjustment Mode
Domestic Hot Water Function
Central Heating Function
Ext
Eco
LCD
DISPLAY RESET
BUTTON DHW CH
TEMPERATURE
ADJUSTMENT
TOGGLE BUTTON
MODE and PROG

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Initial Lighting
Check that all isolating valves and the gas cock, on the
appliance are open and that water flows from the hot water
taps, then close taps, refer diagram 3.
Note: If you are in any doubt about the boiler being filled
with water contact your installer or Glow-worm's own
service organisation using the telephone number on the
inside front cover of this booklet.
Do not operate the boiler without water.
1. With no demand from any external controls, switch on
the electrical supply to the boiler.
Note: If the electrical supply has been interrupted for any
reason, you may need to set the clock and day before
continuing, refer to diagram 5.
Lighting the Boiler
Diagram 3
CENTRAL
HEATING
RETURN
CENTRAL
HEATING
FLOW
VALVES SHOWN CLOSED
DHW
OUTLET GAS DCW
INLET
OPEN
CLOSED
FIXING JIG
GAS INLET
PRESSURE
TEST POINT
GAS SERVICE COCK
2. Select your required function by pressing " Mode ",
scroll through your options and select one of the following:-
Timed central heating with domestic hot water.
Constant central heating with domestic hot water.
Domestic hot water only.
Boiler functions ALL swicthed off.
3. Turn ON your external controls and select the room
temperature required.
The boiler will operate automatically.
Note: The display will indicate the Heating system
pressure in bar or:
•Water temperature, when heating is on.
•Domestic Hot Water temperature setpoint, when
there is a demand.
•Fault Code (see section Fault Finding)
13370

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Adjusting Temperature
13178
Diagram 4
13179
Domestic Hot Water Central Heating
Domestic Hot Water
Domestic hot water has priority
over central heating.
The temperature is factory preset
to the minimum 40°C, but can be
adjustedtoamaximumof62°Cas
required, refer to diagram 4.
Economy Setting
The "ECO" setting of 50°C is
recommended and ideally suited
to normal family use.
Central Heating
The temperature is factory preset
to the minimum 38°C, but can be
adjustedtoamaximumof82°Cas
required, refer to diagram 4.
°C
Press the "+ or -" once
the current temperature
will be displayed "flashing".
STEP 1
STEP 2
Press "+ or -" to
increase or decrease the temperature.
The temperature setting will
automatically save after 5 seconds.
Eco
°C
STEP 1
STEP 2
Press the "+ or -" once
the current temperature
will be displayed "flashing".
Press "+ or -" to
increase or decrease the temperature.
The temperature setting will
automatically save after 5 seconds.

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To set the clock, refer to diagram
5.
Setting the 24 hour Clock.
Diagram 5
13177
STEP 1
STEP 2
MODE
PROG
MODE
PROG
STEP 3
Press and hold "PROG" 5 secs.
the "hours" symbol will flash.
Press "PROG" to confirm.
The process will automatically scroll to minutes,
then days, set as previously described.
Press the "+" or the "-"
to set the hour.

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The symbol indicates - Timed Central Heating
factory preset timed intervals are:-
ModaytoFriday-ON6.00-OFF8.00 ON16.00-OFF23.00
Saturday & Sunday ON 8.00 OFF 23.00
Setting the Programmer
Diagram 6
13180
The symbol indicates - Domestic Hot Water
factory preset timed intervals are:-
Moday to Sunday - ON 6.00 - OFF 24.00
To alter the times to suit your requirments, follow "Steps" 1 to 4
MODE
PROG
Flashing cursor.
Press + or - to move the flashing
cursor to the desired time.
Press "+" to add a time segment
or "-" to remove a time segment.
STEP 1 STEP 2
"Running Time"
Indicated by solid squares.
Square represents 30 minutes.
STEP 3
Press the "PROG" button once to view Mondays
factory default central heating running times.
STEP 4 - COPY FUNCTION.
When validating the timed
intervals you can hold the
"PROG" button for 5 seconds
and the times will be duplicated
onto the next day, hold the button
continually and the times will be
copied to all days.
Press "PROG" to validate the time intervals.
The days will automatically change, repeat the process or refer to
the "Copy Function".
After the 7th. day the "Domestic Hot Water" time intervals will be
displayed, follow the same process steps 1 to 4.
STEP 4
Press "PROG" to validate the time intervals.
The days will automatically change, repeat the process
or refer to the "Copy Function".
After the 7th. day the process will exit to show the
boiler status.
STEP 4
IMPORTANT NOTE.
If there is no activity within a
2 minute period whilst setting the
times, then the times will revert
to the previous periods and you
will have to press "PROG" to
continue.

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Advancing the Programmer
Advancing the timed central heating
programmer ON /OFF times
This function will only work when the appliance is in timed
operating mode, "Clock symbol".
Refer to diagram 8.
The activated/deactivated segments will flash for 5 seconds.
Diagram 7
13181
Advancing the Integral Domestic
Hot Water Cylinder programmer ON /OFF
times
Refer to diagram 8.
The activated/deactivated segments will flash for 5 seconds.
Diagram 8
13181
Press + and hold for 5 seconds
your appliance will operate until
the next OFF period, or you can
cancel by pressing + for 5 seconds.
Press + and hold for 5 seconds
your appliance will operate until
the next OFF period, or you can
cancel by pressing + for 5 seconds.

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FILLING
LOOP
VALVE
FILLING
LOOP
FLEXIBLE
HOSE
DOUBLE
CHECK
INLET
VALVE
QUICK
RELEASE
NUT
QUICK
RELEASE
NUT
FILLING
TAP "B"
FILLING
TAP "A"
Appliance fails to light
The LCD will display a flashing 'F' and code number, press
the reset button on the control panel, see diagram 2.
If the display shows a flashing pressure of 0.4bar or less,
then you will need to pressurise the system as described
below.
If any fault persists, contact your installer/service provider
or Glow-worm Service, using the telephone number on the
inside front cover of this booklet.
Fault Finding
Filling Central Heating System
1. Ensure that the filling loop flexible hose is securely
connected to the double check inlet valve, see diagram 9.
2. Fully open tap "A", then gradually open tap "B" to fill the
heating system to a pressure of 1.0bar. When completed
close the filling taps.
3. IMPORTANT: To comply with the water regulations the
flexible hose must be disconnected from the double check
inlet valve - undo the nut and pull the flexible hose from the
valve.
Electrical Supply Failure
The boiler will not work without an electrical supply and
normal operation of the boiler should resume when the
electrical supply is restored.
If the boiler does not resume normal operation, check the
external controls, it may be necessary, to "reset" the boiler,
refer to the section, "Boiler Safety Devices". Diagram 9
13371

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Because of our constant endeavour for improvement, details may vary slightly from those shown in these instructions.
Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT
0020023707-02
04.08.06