Model: DCA1 Single Channel DCA2 Twin Channel DCA1/2 DCA2 DCA1_DCA2_Instructs_1.4.
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.
External intercom (DCA2 shown) Internal intercom (first channel) Handset cable Electric door catch (not supplied) Internal intercom (second channel) 2 Handset cable 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. DCA1_DCA2_Instructs_1.4.
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 fig 3a and at a maximum distance of 70m from the external intercom. If all the users are significantly above or below average height then a different mounting height may be considered appropriate.
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 flex 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.
i Remove the back box from the external intercom in the following way. Insert a small screwdriver blade in the end cap screwdriver notch (fig 4, i) and lever end cap so that it slides outwards from the main case (in opposite directions to those shown in fig 4, iv). Remove the two fixing screws (as shown in fig 4, iii) and remove the back box from the rear of the external intercom. Fig 4 i End plate Screwdriver notch ii Wiring slot x Y ii This is a convenient time to mark the nameplate(s).
Fig 5i – Rear access to nameplates (DCA2 shown) 1 2 3 4 5 6 7 8 Catch Catch Ring button switch Transparent housing Fig 5ii – Side view of length of nameplate 6 This (thicker) end goes closest to ring button switch Fig 5iii – Transparent housing Ring button switch DCA1_DCA2_Instructs_1.4.
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 fig 4, ii). Mark the positions of the two fixing screws (No. 8 roundhead) using the back box as a template (see fig 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 fig 2) and offer the external intercom up to the back box.
5. Commissioning/Use Press the ring button (fig 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 fitted, the door open button (fig 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.
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 catch for breaks or damage. (if fitted) Check that terminations are correctly made at each end of the above cable. Check that the mains adaptor is plugged in and switched on. 8.
9. Specifications Mains adaptor: 230V 50Hz/15V, 1A Maximum interconnect length between internal and external intercoms: 70m (13/0.2 bell flex) Power consuption Standby: 3W In operation: 10W Operating temperature: -10°C to +50°C Ringtone volume: 80dBA at 0.
HELPLINE 020-8450-0515 11 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 DCA1_DCA2_Instructs_1.4.
