ww

w.glow

-worm

.co.uk1

0020003656-02 11.05

Glow

-worm

, Nottingham

Road, B

elper, Derbyshire. D

E56 1JT

ww

w.glow

-worm

.co.uk

To

be

left w

ith th

e u

se

r

Instru

ction

s for U

se

High E

fficiency Condensing C

ombination B

oilers

Flexicom

cx

ww

w.glow

-worm

.co.uk2

WA

RN

ING

GA

S L

EA

K O

R F

AU

LT

Turn off the gas em

ergency control valve imm

ediately. Elim

inate all sources of ignition, i.e.smoking,

blowlam

ps, hot air guns etc. Do not operate electrical lights or sw

itches either on or off.

Open all doors and w

indows, ventilate the area.

SH

EE

TM

ET

AL

PA

RT

S

This boiler contains m

etal parts (components) and care should be taken w

hen handling and cleaning,w

ith particular regard to edges.

SE

AL

ED

CO

MP

ON

EN

TS

Under no circum

stances must the U

ser interfere with or adjust sealed parts.

Glo

w-w

orm

service call: 01773 828100 Techn

ical help

line: 01773 828300

Gen

eral and

Sales en

qu

iries Tel: 01773 824639 Fax: 01773 820569

ww

w.glow

-worm

.co.uk3

24cx

30cx

G.C

. No. 47-047-33

G.C

. No. 47-047-34

12801

Position of nam

ebadge (typical show

n)

ww

w.glow

-worm

.co.uk4

Important Inform

ation5

Boiler D

esign6

Boiler S

afety Devices

7

Maintenance

8

Boiler O

peration9

CO

NT

EN

TS

These instructions are an integral part of the boiler and m

ust, to comply w

ith the current issue of the Gas S

afety(Installation and U

se) Regulations, be left w

ith the user.

Please read these instructions and follow

them carefully for the safe and econom

ical use of your boiler.

ww

w.glow

-worm

.co.uk5

Gas S

afety (Installatio

n an

d U

se) Reg

ulatio

ns

In your own interests and that of safety, it is the Law

that ALL gas

appliances have been installed by a com

peten

t perso

n in

accordance with the current issue of the regulations.

Co

ntro

l of S

ub

stances H

azardo

us to

Health

Under S

ection 6 of The H

ealth and Safety at W

ork Act 1974, w

e arerequired to provide inform

ation on substances hazardous to health.

The adhesives and sealants used in this appliance are cured and give

no known hazard in this state.

Electrical C

on

nectio

n

The boiler M

US

T be earthed.

The boiler M

US

T be connected to a perm

anent 230V ac, 50H

zsupply.

Connection of the w

hole electrical system of the boiler, including any

heating controls, to the electrical supply must be through one com

mon

isolator and must be fused to 3 A

mps m

aximum

.

The colours of three core flexible cable are, blue - neutral, brow

n - live,green and yellow

- earth.

All connections m

ust be routed through the Installer Interface.

IMP

OR

TA

NT

NO

TE

ALL electrical connections to the boiler

must be perm

anently fixed to a wall or a

sturdy support feature.

Gas C

atego

ry

This boiler is for use only on G

20 natural gas.

Testin

g an

d C

ertification

This boiler is certificated to the current issue of E

N 483 for

performance and safety.

It is important that no alteration is m

ade to the boiler unlessapproved, in w

riting, by Glow

-worm

.

Any alteration not approved by G

low-w

orm, could invalidate the

certification, boiler warranty and m

ay also infringe the current issueof the statutory requirem

ents.

CE

Mark

This boiler m

eets the requirements of S

tatutory Instrument, N

o. 3083of the B

oiler (Efficiency) R

egulations, and therefore is deemed to

meet the requirem

ents of Directive 92/42/E

EC

on the efficiencyrequirem

ents for new hot w

ater boilers fired with liquid or gaseous

fuels.

Type test for purposes of R

egulation 5 certified by: Notified body

0087.

Product/production certified by: N

otified body 0086.

The C

E m

ark on this appliance shows com

pliance with:

1. Directive 90/396/E

EC

on the approximation of the law

s of theM

ember S

tates relating to appliances burning gaseous fuels.

2. Directive 73/23/E

EC

on the harmonisation of the Law

s of theM

ember S

tates relating to electrical equipment designed for use

within certain voltage lim

its.

3. Directive 89/336/E

EC

on the approximation of the Law

s of theM

ember S

tates relating to electromagnetic com

patibility.

Imp

ortan

t Info

rmatio

n

ww

w.glow

-worm

.co.uk6

Bo

iler Desig

nD

escriptio

n

These boilers are designed for use as part of a sealed

water central heating system

with fully pum

ped circulation.T

he pump, expansion vessel and associated safety

devices are all fitted within the boiler. T

he hot water P

RE

HE

AT

temperature facility w

ill improve the boilers hot w

aterdelivery response.

The daily pum

p and 3 way valve exercise program

me com

binedw

ith the built-in frost protection will help to m

aintain andprotect the boiler.

Once the controls are set the boiler operates autom

atically.

Co

mp

artmen

t or C

up

bo

ard In

stallation

s

Ventilation is not required for com

partment or cupboard

installations.

Do not use the com

partment or cupboard for storage.

The m

inimum

clearances to fixtures are shown in diagram

1.

Plu

min

g fro

m flu

e termin

al

Like all condensing boilers it will produce a plum

e ofcondensation from

the flue terminal in cool w

eather. This is

due to the high efficiency and hence low flue gas tem

peratureof the boiler. It is norm

al and not a fault indication.

Diagram

1

1505

55

150

600

A rem

ovable compartm

ent door can be placed a minim

um of

5mm

in front of the appliance but there must be a

clearance of 600mm

minim

um from

a fixed surface

Electrical S

up

ply F

ailure

The boiler w

ill not work w

ithout an electrical supply and normal

operation of the boiler should resume w

hen the electricalsupply is restored.

If the boiler does not resume norm

al operation, check theexternal controls, it m

ay be necessary, to "reset" the boiler,refer to the follow

ing section, "Boiler S

afety Devices".

12652

*

ww

w.glow

-worm

.co.uk7

Bo

iler Safety D

evicesO

verheat R

eset

The boiler softw

are is designed to recognise the potential foran overheat lockout and w

ill shutdown before this happens.

To restart the boiler, press the reset button, see diagram

2.

If the boiler fails to resume norm

al operation and all externalcontrols are calling for heat, then call your Installation/S

ervicingcom

pany or Glow

-worm

service.

Fro

st Pro

tection

With the gas and electric supplies O

N and irrespective of

any room therm

ostat setting, the integral frost protectiondevice w

ill operate the pump w

hen the temperature of the

boiler water falls below

8OC

.A

timer is used so that the tem

perature can be checkedperiodically. A

fter 10 minutes the pum

p will be stopped if the

temperature is higher than 10

OC or has already reached

35OC

.T

he burner will only activate if the boiler tem

perature doesnot reach 10

OC after 30 m

inutes or at any time if the

temperature drops to 5

OC.

The burner w

ill switch off w

hen the temperature reaches

35OC

.

NO

TE

: Any other exposed areas of the system

should beprotected by a separate frost therm

ostat.

Co

nd

ensate D

rain B

lockag

e

As a safety feature the boiler w

ill stop working if the condensate

drain becomes blocked. D

uring freezing conditions this may

be due to the forming of ice in the condense drain external to

the house. Release an ice blockage by the use of w

arm cloths

on the pipe. The boiler should then restart. C

ontact yourInstallation/S

ervicing company or G

low-w

orm service if the

fault persists.

Safety D

ischarg

e Valve

A safety discharge valve and discharge pipe is fitted to the

boiler. This valve M

US

T not be touched. If there is any

discharge from the pipe, sw

itch off the boiler electrical supply,then call your Installation/S

ervicing company or G

low-w

ormservice.

Diagram

2

°

RE

SE

T

DIG

ITAL D

ISP

LAY

ww

w.glow

-worm

.co.uk8

Sealed

Water S

ystems

The draining, refilling and pressurising M

US

T be carried out

by a com

peten

t perso

n, contact your Installation/S

ervicingcom

pany or Glow

-worm

Service.

Sp

are Parts

RE

ME

MB

ER

, When replacing a part on this boiler, use only

spare parts that you can be assured conform to the safety and

performance specification that w

e require. Do not use

reconditioned or copy parts that have not been clearlyauthorised by G

low-w

orm.

If replacement parts are required contact G

low-w

orm’s ow

nservice organisation using the telephone num

ber on theinside front cover of this booklet.

Please quote the nam

e of the boiler, this infomation w

ill be onthe nam

e badge on the front case.

If in doubt seek advice from the local gas com

pany or Glow

-w

orm’s ow

n service organisation using the telephone number

on the inside front cover of this booklet.

Servicin

g

To ensure the continued efficient and safe operation of the

boiler it is recomm

ended that it is checked and serviced atregular intervals. T

he frequency of servicing will depend upon

the site conditions and usage, but in general, once a yearshould be enough.

If this boiler is installed in a rented property in the UK

there isa duty of care im

posed on the owner of the property by the

current issue of the Gas S

afety (Installation and Use)

Regulations, S

ection 35.

Servicing/m

aintenance should be carried out by a com

peten

tp

erson

in accordance with the rules in force in the countries

of destination.

To obtain service, please call your installer or G

low-w

orm’s

own service organisation using the telephone num

ber on theinside front cover of this booklet.

Clean

ing

The boiler casing can be cleaned using a m

ild liquid detergentw

ith a damp cloth, then a dry cloth to polish.

Do not use any form

of abrasive or solvent cleaner as you may

damage the paintw

ork.

Fro

st Pro

tection

If the mains electricity and gas services are to be turned off for

any long periods during severe weather, it is recom

mended

that the whole system

, including the boiler, should be drainedto avoid the risk of freezing.

Main

tenan

ce

ww

w.glow

-worm

.co.uk9

Bo

iler Op

eration

Diagram

3

Isolatin

g V

alves

1. Check that all isolating valves and the G

as cock,on the boiler are open and that w

ater flows from

thehot w

ater tap.

2.If you are in any doubt about the boiler being filledw

ith water contact your installer or G

low-w

orm's ow

nservice organisation using the telephone num

ber onthe inside front cover of this booklet.D

o n

ot o

perate th

e bo

iler with

ou

t water.

3.C

heck that the electrical supply to the boiler is ON

andthat all taps are closed and there is no dem

and fromany external controls.

4.T

he digital display, see diagram 2, w

ill indicate thesystem

pressure, which should read at least 0.7bar

(recomm

ended 1.0bar), if the pressure is less,reconnect the filling loop and pressurise as describedin the follow

ing section, Filling Loop.

5.T

o operate or switch off the boiler follow

theinstructions as described on the follow

ing pages.

6.S

et any external controls as required.

Fillin

g L

oo

p

Turn the central H

eating Flow

isolation valve into the fillingposition as indicated diagram

3 and gently opening bothtaps until the correct pressure is indicated on the display.

If the loss of pressure problem persists, you M

US

T contact

your Installation / Servicing com

pany or Glow

-worm

Service.

12784

ISO

LA

TIN

G V

AL

VE

SA

Central H

eating - Flow

(closed)B

Gas cock - (closed)

CC

old Water - Inlet

(closed)D

Central H

eating - Return (closed)

EF

illing Loop Taps (inset show

n open)

AB

CD

E

Filling

position

12783

ww

w.glow

-worm

.co.uk10

Descrip

tion

The boiler U

ser controls consist of a "MO

DE

" button, referto diagram

6, which, w

hen pressed and held for 2seconds, enters the C

entral Heating function indicated by a

flashing radiator symbol. E

ach press of the "MO

DE

" buttonw

ill now cycle betw

een Dom

estic Hot W

ater function(flashing tap) and C

entral Heating (flashing radiator). A

fter10 seconds of inactivity the display w

ill reset to indicate thew

ater pressure.

The "S

ELE

CT

OR

" buttons are used to turn OF

F or set the

Central H

eating (38 - 82OC

) / Dom

estic Hot W

ater (40 -60

OC) tem

perature during the respective functionsindicated above.

To access the P

re Heat function hold in the "+

" button for 5seconds. T

he display will indicate (flashing) if it is O

N/

OF

F(O

F). P

ressing the "-" button will sw

itch the Pre H

eatO

FF

and pressing the "+" button w

ill switch it O

N. A

fter 10seconds of inactivity the display w

ill reset to indicate thew

ater pressure.

If a fault occurs, indicated by a flashing 'F' and code

number, press the reset button positioned below

the digitaldisplay.

If a fault persists, indicated by a flashing 'F' and code

number, contact your installer/service provider or G

low-

worm

Service, using the telephone num

ber on the insidefront cover of this booklet. B

oiler O

peratio

n - U

ser Co

ntro

ls

ww

w.glow

-worm

.co.uk11

Bo

iler Op

eration

- Disp

lay

12873

°

RE

SE

T BU

TTON

DIG

ITAL D

ISP

LAYS

ELE

CTO

R B

UTTO

NS

MODE BUTTON

1. Press and hold for 2

seconds for Central

Heating

Press to toggle betw

een2. D

omestic H

ot Water

3. Central H

eating

SELECTOR BUTTON FUNCTION1. Increase Tem

perature2. P

ress and hold for 5 second s for P

re Heat

3. Pre H

eat ON

SELECTOR BUTTON FUNCTION1. D

ecrease Temperature

2. Deactivate C

entral Heating

and Dom

estic Hot W

ater3. P

re Heat O

FF

°Cbar

DO

ME

ST

IC H

OT

WA

TE

R

CE

NT

RA

L HE

AT

ING

TE

MP

ER

AT

UR

E

SY

ST

EM

PR

ES

SU

RE

BU

RN

ER

DE

MA

ND

Diagram

6

barOFF

bar

°C°C

Central Heating and Domestic Hot water

activated but with no demand,

system pressure indicated.

Central Heating active with demand

indicated by temperature

and burner symbol.

Domestic Hot water active with dem

and, indicated by tem

perature and burner sym

bol.

Pre Heat flashing ON.

Pre Heat flashing OFF.

Holiday Mode:

Central Heating and Domestic Hot water

de-activated, OFF, system pressure

indicated.

°CDom

estic Hot water Pre Heat function has activated.

OP

ER

AT

ION

12874

ww

w.glow

-worm

.co.uk12

Because of our constant endeavour for im

provement, details m

ay vary slightly from those show

n in these instructions.

ww

w.glow

-worm

.co.uk