Dimplex AC3CN User manual

08/19239/4 - Issue 7

AC3CN Recessed Ceiling Heater / Over Door Heater

The product complies with the European Safety Standards EN60335-2-30 and the European Standard Electromagnetic Compatibility (EMC) EN55014, EN60555-2 and

EN60555-3. These cover the essential requirements of EEC Directives 2006/95/EC and 2004/108/EC

0.250SCALE

IMPORTANT: THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND RETAINED FOR

FUTURE REFERENCE

IMPORTANT SAFETY ADVICE

DO NOT COVER OR OBSTRUCT the air inlet or outlet grille.

ENSURE THE APPLIANCE IS EARTHED.

Do not use this heater in areas where excessive dust exists.

This heater must not be located immediately above or below a ﬁxed socket outlet or connection box.

Always disconnect supply before working on the product.

This product should be mounted safely to solid wall or ceiling surfaces only.

Ensure the supply cables are of adequate current carrying capacity and are protected by a suitable

fuse.

If the appliance is mounted in a toilet or washroom, the appliance should be mounted such that no part

of it can be touched by a person using a ﬁxed bath or shower.

If the appliance is mounted in a toilet or washroom an isolating switch must be provided outside the

washroom adjacent to the entrance door.

This appliance can be used by children aged from 8 years and above and persons with reduced

physical, sensory or mental capabilities or lack of experience and knowledge if they have been given

supervision or instruction concerning use of the appliance in a safe way and understand the hazards

involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made

by children without supervision.

Children of less than 3 years should be kept away unless continuously supervised. Children aged from

3 years and less than 8 years shall only switch on/off the appliance provided that it has been placed or

installed in its intended normal operating position and they have been given supervision or instruction

concerning use of the appliance in a safe way and understand the hazards involved. Children aged

from 3 years and less than 8 years shall not plug in, regulate and clean the appliance or perform user

maintenance.

CAUTION — Some parts of this product can become very hot and cause burns. Particular

attention has to be given where children and vulnerable people are present.

This heater is not equipped with a device to control the room temperature. Do not use this heater in

small rooms when they are occupied by persons not capable of leaving the room on their own, unless

constant supervision is provided.

DO NOT COVER OR OBSTRUCT the air inlet/outlet ceiling grille.

A minimum distance of 1.5 metres must be observed between the ceiling grille and any furniture,

combustible material or furnishings.

This appliance must not be installed less than 1.8 metres above the ﬂoor.

WARNING: ENSURE THIS PRODUCT IS EARTHED.

A suitable isolator to the ﬁxed wiring of the premises must be provided adjacent to the ﬁnal position of

the Switch Panel. An Isolator must be ﬁtted close to the heater to allow for servicing

This product must not be subjected to water spray or immersion and should be mounted such that no

part of it can be touched by a person using a ﬁxed bath or shower.

This product should be mounted safely into ceiling areas only.

The ceiling can be either of a plasterboard (or similar) construction, or of suspended ceiling tiles.

DO NOT store or use any •ammable materials or sprays in the vicinity of the heater – FIRE HAZARD.

DO NOT insert any foreign objects into the heater openings.

Risk of injury, electric shock or damage to the heater may occur.

Ensure proper manual handling procedures are observed at all times.

ATTENTION: IN ORDER TO

AVOID OVERHEATING DO

NOT COVER.

General

The carton contains: -

• 1 x AC3CN heater

• 1 x Switch box

This Recessed Ceiling Heater / Over Door Heater is a robust heater intended

for installation into a suspended or plasterboard ceiling.

For optimum results, do not install this product in ceilings higher than 3 metres.

If multiple heaters are installed, generous spacing should be provided between

heaters to achieve an even heating distribution.

Electrical Connection

The Electrical connection of this product should be carried out by a competent

electrician and be in accordance with the current IEE wiring regulations.

A suitable local isolating switch must be provided in the electrical supply circuit

with at least 3mm clearance on each pole.

Connection of Heater

Gain access to the terminal block (see ‘x’ in Fig. 2) by unlocking the grill by

moving the two slides in the direction of the arrows (see ’A’ in Fig. 2) as shown

using a small screwdriver or other suitable tool. Open the grill and feed the

appropriate cable through the cable gland (see ‘Y’ in Fig. 2).

WARNING: Ensure power cable path does not come into contact with internal

heater elements or fans.

Make connections as per wiring Diagram (see Fig. 3) and close the grille.

Connection of Switch Panel

The mains electrical supply cable and power cable to this heater (neither

supplied) should be connected as per the wiring diagram shown in

Fig. 4 (see Fig. 5 for Switch No.’s).

Label Description

1ON - OFF (Double Pole Switch)

2HALF HEAT (Single Pole Switch)

3SECOND HALF HEAT (Single Pole Switch)

T TERMINAL BLOCK

M MAINS IN POWER CABLE (NOT SUPPLIED)

BBLOWER MOTOR

E HEATER ELEMENT

TTERMINAL BLOCK

CPOWER CABLE FROM SWITCH PANEL TO

HEATER (5 core - NOT SUPPLIED)

IIsolators

∗Test all switch settings once installation is

complete ∗

Installation of Switch Panel

AFig. 2

Fig. 1

Recessed Ceiling Heater / Over Door Heater

Model: AC3CN

Model Loading Current Voltage Weight

(kW) (amps) (volts) (kg)

AC3CN 3 13 ∼230-240 8.7

579

271

209

639

330

105

500

H1 H2N NL L

1 2 3

Fig. 3

Fig. 4

400

265

Access Panel

Doorway

Fig. 7

275

Fig. 5

145

120

134

123

Fig. 1

Fig

. 1

500mm 105mm

271mm

579mm

Fig. 6

WARNING: The Switch Panel should not be installed in a toilet or washroom.

The backing box (standard B.S. double gang as shown in Fig. 5) should be

!xed to a suitable wall. Suitable wall conduit should be used where applicable

to carry the cable between the heater and the switch panel. A suitable recessed

wall box may be substituted, as an alternative.

Installation of Heater

The Installation of this product must only be carried out by a prescribed

competent person in accordance with Building Regulations and the current IEE

Wiring Regulations for electrical equipment.

This heater can either be installed into a suspended or plasterboard ceiling.

First it is necessary to ensure that there is suf!cient space above the ceiling

for the Installation of this product (see Fig. 1 and Fig. 7).

This product is designed to be suspended by threaded rod or wires/chains.

Always ensure this unit is adequately supported when installed.

Installation in a Ceiling

A hole as indicated in Fig. 1 and Fig. 6 must be cut into the ceiling. Allow an additional

amount for clearance.

It may be necessary to !x an internal supporting frame

around the newly cut aperture in a plasterboard ceiling or suspended ceiling.

To mount the unit into the ceiling void, use lengths of threaded bar or hooks

(not supplied) screwed into the M8 threaded inserts located in the top side of

the heater (see Fig. 1 for dimensions). Adjust the height of the heater so the

inner edge of the grill surround is "ush with the ceiling.

Installation in a Bulk Head

(over doorway)

A hole (579x271mm) as indicated in

Fig. 7, must be cut into the ceiling part

of the bulk head. Drop rods should be

used to mount the appliance in such a

position, as to have the base "ush with

the ceiling. An access panel should

also be provided on the front of the

bulkhead. This provides access to the

top of the appliance and cable entry

point. Access for wiring the appliance

is via the grille.

Operation of Switch Panel

Switch on electrical supply (MAINS IN)

to the Switch Panel.

Switching the switch marked ‘I’ (see ‘1’ in Fig. 5) energises the fan and switches

on the electrical supply to the heater.

The heat selection switches allow heat settings to be chosen as shown

below:

Settings - I Fan Only

I + Fan + 1/2Heat

I + Fan + Full Heat

The desired setting can be obtained through switch selection.

WARNING This heater is not equipped with a device to control the

room temperature. Do not use this heater in small rooms when they

are occupied by persons not capable of leaving the room on their own,

unless constant supervision is provided.

This appliance is not intended for use by persons (including children)

with reduced physical, sensory or metal capabilities, or lack of

experience and knowledge, unless they have been given supervision or

instruction concerning use of the appliance by a person responsible for

their safety.

Children should be supervised to ensure that they do not play with the

appliance.

Thermal Safety cut-out(s)

The power supply to the heating elements will be interrupted if one or a

combination of the following abnormal events occur:

1. Air inlet/outlet panel is obstructed.

2. I n t e r n a l v e n t i l a t i o n i s i m p a i r e d d u e t o b u i l d u p o f d u s t

and •uff.

3. Blower unit stalls.

Note : If the cut-out operates, the heater must be turned off immediately to

avoid damage to the heater. Please follow the ‘Procedure for resetting cut-

out(s)’ explained below.

Procedure for resetting cut-out(s)

Establish the cause and eliminate the fault.

Reset the thermal cut-out(s), located behind the air outlet (for detail view see

Fig. 11).

Press the black reset button (see ‘g’ in Fig. 11) on the side of the cut-out (see

‘f’ in Fig. 11) as described in steps 2 - 4 :-

Steps to reset cut-out(s)

1. Disconnect the power supply.

2. Pass small •at head screwdriver through air inlet/outlet panel ‘B’ to button

side of the cut-out (see ‘g’ in Fig. 11) avoiding contact with the element

(see ‘e’ in Fig. 11).

3. Press the reset button in direction shown in Fig. 11 to reset the cut-out.

(cut-out clicks when reset)

4. Remove the screwdriver carefully.

5. Turn on the supply.

If the cut-out continues to operate, the heater should be switched off and an

engineer called.

Maintenance

WARNING: ALWAYS DISCONNECT HEATER FROM THE POWER SUPPLY

BEFORE ATTEMPTING ANY MAINTENANCE.

The heater should be serviced annually. Any dust or debris should be

removed from the grille and elements, taking care not to damage the

elements.

Cleaning the Heater & Switch Panel

External and grille appearance can be maintained by occasionally vacuuming

and wiping with a light duster. External appearance of the switch panel can be

maintained by wiping occasionally with a duster or for stain removal, a weak

soap solution can be applied with a cloth and the surface wiped dry.

Note: Care must be taken to avoid any moisture ingress into the switch

panel.

After Sales Service

Your product is guaranteed for one year from the date of purchase.

Within this period, we undertake to repair or exchange this product free of

charge provided it has been installed and operated in accordance with these

instructions.

Your rights under this guarantee are additional to your statutory rights, which

in turn are not affected by this guarantee.

Should you require after sales information or assistance with this product

please go to www.dimplex.co.uk where you will !nd our self help guide by

clicking on “After Sales” or ring our helpdesk on the number shown on the rear

of this booklet.

Please retain your receipt as proof of purchase.

Fig. 11

DIMPLEX

MILLBROOK HOUSE

GRANGE DRIVE

HEDGE END

SOUTHAMPTON

SO30 2DF

TEL: 0844 879 3587

FAX: 0844 879 3582

WEBSITE: www.dimplex.co.uk

Republic of Ireland Tel. 01 8424833

A division of GDC Group Ltd.

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