AUDIO DOOR ENTRY SYSTEM
Model: DCA1 Single Channel
DCA2 Twin Channel
DCA1/2
INSTALLATION & OPERATING INSTRUCTIONS
DCA1DCA2
1. Introduction
The DCA1/DCA2 Door Entry System enhances entry security by enabling the user
to recognise the potential entrant by audible means before opening the door.
An electric door catch (not supplied) is available as an optional extra for the
DCA1/DCA2 to make the door opening automatic.
The DCA2 external intercom has the ability to call separately located internal
intercoms for two individual dwellings with a common entrance.
The DCA1 calls one.
Connecting cables between component parts are all 2 core, so existing bell fl ex
can be used to connect the internal and external units if desired.
2. Overview
If operation with an electric door catch is required then part DCLR is a fail
(power off) secure catch available from Timeguard.
1
1
5
3
Fig 1
Component parts
7
of Single Channel
system.
10
2
4
1. External intercom
(1 channel shown)
2. Internal intercom
3. Mains adaptor
8
9
4. 15m of 2 core
connecting cable
5. Cable terminals
7. Ring button
8. Ringtone volume
adjust (2 position
switch)
9. Door open button
10. Mains adaptor low
voltage plug
Internal intercom
(fi rst channel)
External intercom
(DCA2 shown)
Handset cable
Internal intercom
(second channel)
Handset cable
Electric door catch
(not supplied)
Fig 2
Wiring diagram for Two Channel system.
6. Terminal strip
11. Mains adaptor socket
12. Internal intercom mounting hole
13. Cable channel
Note: For single channel operation ignore second channel internal intercom
and its 2 core connecting cable to terminals 3 and 4 on the external intercom.
2
3
3. Selecting intercom sites and cabling
3.1 Intercom sites
The internal intercom should be located at a convenient position for all potential
users at the height indicated in fi g 3a and at a maximum distance of 70m from
the external intercom. If all the users are signifi cantly above or below average
height then a different mounting height may be considered appropriate.
The external intercom should be sited in an area away from driving rain
and surface water, out of direct sunlight as far as possible and protected by the
minimum of an open porch in a position readily accessible to potential entrants.
It should be mounted at the height indicated in fi g 3b.
50cm
75º
165
cm
165
cm
Fig 3a
Internal intercom
mounting height
Fig 3b
External intercom mounting
height and coverage
3.2 Cabling
Connection between the internal and external intercoms is by 2 core cable and
must be no more than 70 m long. Two core (13 x 0.2) bell fl ex is suitable.
A 15m length (2 lengths for DCA2) of 2 core cable is supplied with the kit and
existing bell cable runs can be made use of.
The cable run should be kept at least 100mm away from mains cables to avoid
interference.
A second relatively short 2 core cable (13/0.2 bell fl ex) will be required between
the external intercom and the door catch (if used).
A further 2 core cable (13/0.2 bell fl ex) will be required (if extension beyond
15m is necessary) between the external intercom and the second internal
intercom for the DCA2.
4. Fixing Intercoms
4.1 External intercom
Important: To give the best possible waterproofi ng and appearance
we recommend taking the wiring through the exterior wall directly
behind the external intercom so that the cabling will feed directly
through the back box wiring slot. If the surface to be fi xed to is not
even (e.g. pebbledash or brickwork with raised pointing) we recommend
the use of at least 10mm (3/8") thick marine ply as a mounting plate
between the wall and the back box to prevent its distortion and loss of
waterproofi ng.
4
5
i Remove the back box from the external
intercom in the following way. Insert a
small screwdriver blade in the end cap
screwdriver notch (fi g 4, i) and lever
end cap so that it slides outwards from
the main case (in opposite directions to
those shown in fi g 4, iv). Remove the two
fi xing screws (as shown in fi g 4, iii) and
remove the back box from the rear of the
external intercom.
ii This is a convenient time to mark the
nameplate(s).
Referring to fi gs 5i and 5iii push catches
at each end of the transparent housing
inwards as shown in fi g 5iii and remove
ring burtton and nameplate assembly
followed by the nameplate transparent
cover, fi nally levering out the nameplate
as required.
Mark the nameplate as required with a
permanent fi bre-tipped pen. When dry
insert the name plate in its transparent
cover, ensuring it is the right way up.
Snap the transparent cover into the
housing bearing in mind it is not
symmetrical and the end with the thicker
lip goes at the end closest to the ring
button switch.
Offer the transparent housing to the
external intercom casing ensuring wiring
is not trapped and snap the catches into
place.
Check the ring button and the nameplate
are correctly located.
Repeat for second ring button and
nameplate assembly if necessary.
Fig 4
i
End plate
Screwdriver
notch
ii
Wiring slot
Y
x
iii
iv
End cover
End cover
X = wire to the inside intercom
(2 for DCA2)
Y = wire to door catch (if required)
Fig 5i – Rear access to nameplates (DCA2 shown)
1 2 3 4 5 6 7 8
Catch
Ring button
switch
Fig 5ii – Side view of length of nameplate
This (thicker) end goes closest
to ring button switch
Fig 5iii – Transparent housing
PCB
Catch
Transparent
housing
6
Push catch
inwards
Ring button
switch
housing
CatchTransparent
7
iii Offer the back box up to the required position on the wall (refer to section
3.1). Feed the cables through the wiring slot in the back box (see fi g 4, ii).
Mark the positions of the two fi xing screws (No. 8 roundhead) using the back
box as a template (see fi g 4, ii). Remove the back box, drill and, if necessary
plug holes. Feed the cables through the wiring slot. Fix the back box to the
wall.
iv Make the necessary wire terminations (see fi g 2) and offer the external
intercom up to the back box. Tighten the fi xing screws as indicated (fi g 4, iii).
v Slide the two end covers inwards as shown until fully home (see fi g 4, iv).
4.2 Internal intercom
Choose a position which can be reached easily by all potential users. If one
person usually in one location will be the main user it may be considered
appropriate to locate the internal intercom within reach of that person.
Mark out two holes suitable for No. 8 roundhead screws 164mm vertically apart
at the required location on the wall (refer to section 3.1 and fi g 2). Drill and
plug the holes if necessary then screw the screws home leaving 5mm of the
shank exposed (see fi g 6) to enable keyhole fi xing points to slide behind the
screws.
Connect the two core lead from the external intercom according to fi g 2. Plug
the mains adaptor low voltage plug (see fi g 1) into the mains adaptor socket
(see fi g 2). Arrange the two cables in the cable channel on the back of the
internal intercom. Finally locate the internal intercom mounting holes on the
two fi xing screws, and slide the intercom downwards.
Fig 6
5mm
Wall surface
5. Commissioning/Use
Press the ring button (fi g 1, 7) at the external intercom – a buzz will be heard
locally and a ring tone will be heard at the internal intercom unit for 2 to 3
rings.
Once handset is lifted, two way communication is possible via the microphone
and speaker at the external intercom.
Finally, if a door catch is fi tted, the door open button (fi g 1, 9) should be pressed
and the door can be opened.
It is not necessary for the handset to be lifted to use the door open facility.
It is possible to adjust the ringtone volume with the slide switch (fi g 1, 8) on the
side of the internal intercom.
6. Do’s and Dont’s
1. Never use the product if it shows any signs of damage.
2. In case of damage to the product unplug the mains adaptor from the mains
supply to avoid any possibility of electric shock and have the damage
examined by a competent person.
3. When laying cabling ensure that no cables (particularly mains cables) are
damaged.
4. Never try to operate the mains adaptor at a voltage other than 230V 50Hz.
5. The installation should only be carried out by a competent person.
6. The internal intercom should be kept out of reach of children and
unauthorised persons.
7. Keep low voltage cabling at least 100mm away from any mains cabling.
8. Ensure that all electrical connections are made and wires are arranged
according to the instructions.
9. Do not cover the louvres on the internal intercom.
8
9
7. Troubleshooting
No Audio Check cable between internal and external intercoms
is connected correctly.
Check that there are no breaks or damage to the
interconnecting two core cable.
Check that the mains adaptor is plugged in and
switched on.
Door catch not working Check cable between external intercom and door
(if fi tted)
Check that terminations are correctly made at each
Check that the mains adaptor is plugged in and
catch for breaks or damage.
end of the above cable.
switched on.
8. Cleaning
Unplug mains adaptor before cleaning product.
Clean internal and external intercoms with a damp cloth only – no cleaning
agents.
Remove dust deposits from the louvres on the internal intercom with a soft
brush or vacuum cleaner.
9. Specifi cations
Mains adaptor: 230V 50Hz/15V, 1A
Maximum interconnect length between
internal and external intercoms: 70m (13/0.2 bell fl ex)
Power consuption Standby: 3W
In operation: 10W
Operating temperature: -10°C to +50°C
Ringtone volume: 80dBA at 0.3m maximum
(adjustable by 2 position
slide switch)
Door catch: Max 12V DC 1A
3 Year Guarantee
In the unlikely event of this product becoming faulty due to defective material
or manufacture within 3 years of the date of purchase, please return it to your
supplier in the fi rst year with proof of purchase and it will be replaced free of
charge. For years 2 and 3 or any diffi culty in the fi rst year telephone the helpline
on 020 8450 0515.
10
Recycling
When service life is over please consult your local
authority regarding method of disposal.
11
HELPLINE
020-8450-0515
For a product brochure please contact:
Timeguard Ltd.
Victory Park, 400 Edgware Road,
London NW2 6ND
020-8452-1112
or email csc@timeguard.com
67-058-232
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