dmc3-4 Installation Instructions $ QEG 1.
dmc3-4 Introduction Designed to update older intercom systems, the dmc3-4 is a wholehouse music communications system that uses your existing intercom 3 or 4 conductor system wire. It is designed to provide years of enjoyment and service to the homeowner. M&S audio products are backed with more than 50 years of experience in the design and manufacture of precision acoustical equipment for the home.
dmc3-4 Important Safety Instructions READ ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLING OR USING THE DMC3-4 SYSTEM THE dmc3-4 MUST BE INSTALLED BY A M&S SYSTEMS DEALER OR INSTALLER, AND MUST CONFORM TO ALL LOCAL BUILDING AND ELECTRICAL CODES. Warning: Always follow these safety instructions. Retain these instructions for future system reference. • Read ALL safety and operating instructions before installing the dmc3-4. • Adhere to all warnings on the dmc3-4 and in these instructions.
dmc3-4 The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of shock to persons. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
dmc3-4 • Upon completion of any service or product repair, have the M&S Systems dealer or installer conduct a safety check to ensure the system is in proper operating condition. • Use only a damp cloth to clean the dmc3-4 master and room stations. Do not use liquid cleaners or aerosol cleaners. Cautions: Wiring • A qualified electrician must run a 120V AC line to the dmc3-4 retrofit transformers.
dmc3-4 • KEEP cables away from objects such as heating and air conditioning ducts, metal construction plates, and anything else with sharp edges that can damage the cables. Cautions: Room Station Rough-In Careful consideration should be used when determining the location of the room stations and master. Since this is a retrofit system you will not be able to control the location of the existing system.
dmc3-4 Installation Overview The dmc3-4 retrofit installation is completed using the following steps: • Develop the job estimate • Removal of the old intercom system • Install the dmc1H or dmc1HC housing • Replace the room stations (note do not remove the existing room station mounting rings) • Install the optional dmc1CD player • Install the dmc3-4 master and make all room station connections • Test the system The following tools are required for the dmc3-4 installation.
dmc3-4 • Wood chisel • Dry wall saw You may not need to use all these tools on each install but having them handy will make the overall installation process easier. Develop the Job Estimate It is critical that you determine the complexity of each retrofit installation prior to developing the job estimate. It is hard to predict all the unique situations you will encounter in the field.
dmc3-4 Removing the Old System Prior to removing the existing intercom system make sure all power is turned off at the intercom location. Remove the screws from the intercom master and while removing the intercom, make sure to carefully label each wire with its corresponding room location. Disconnect all the room station and door station wires from the master. Then carefully remove the existing wall housing and transformers.
dmc3-4 combination systems only – or those that include the dmc3-4 master and the optional dmc1CD 6-disc CD player. Locate wall housing dmc1H or dmc1HC (combo). The housing must be positioned so that the transformers are on the bottom of the wall housing as shown in figure 1. If you are replacing the existing master only system with a combination dmc3-4 system you will have to cut the rough-in opening larger to accommodate the larger wall housing.
dmc3-4 For the dmc1HC combo wall housing have a qualified electrician loop a power wire from the TE5C transformer enclosure to the TE2C transformer enclosure following the same procedure described above and shown in TE5C TE2C Figure 5. Figure 4 – Transformer placement Figure 5 - dmc3-4HC transformer connection Replacing the Room Stations The DMC room and door speakers use the existing wire and speaker rough-in mounting frames or boxes. To replace the speaker, first remove the old speaker.
dmc3-4 Next connect the wires to the dmc retrofit room station as shown in Figure 7. Match the wire colors to the corresponding screw locations on the dmc3 or dmc4 room stations. Please make sure to use only dmc3 room stations in a 3-wire installation and dmc4 room stations in a 4-wire installation. All 6-wire installations use the DMC1 room stations. Please refer to appendix A for a diagram of which NuTone and M&S systems map to the 3, 4 or 6-wire (requires dmc1 master) configurations.
dmc3-4 After connecting the room station to the existing wiring using the diagrams above. Place the room station through the DMCFR plastic mounting plate. Position the plate either vertically or horizontally depending on the room station replaced. Place the room station into the roughin ring and align the frame with the room station as shown in Figure 8. Use the screws provided with the room station to screw the room station and frame into place.
dmc3-4 DMC1HRWS. This is a surface mount box and cover that will support the DMC1RW, DMC3RW or DMC4RW patio speakers. To install a patio speaker follow the instructions presented above for interior room stations. Door Stations Remove the old door station but do not remove the rough-in box or surface mount box. When replacing a NuTone door speaker you must use the DMCFD finish-out frame. The M&S door station sets in the DMCFD and the screws attach to the existing rough-in.
dmc3-4 Make sure the single gang box extends past the wall stud and into the room so it will be flush with the sheetrock when it is applied. Run the Red and Black shielded audio cables (included in the AWPRX) from the master unit location to the AWP location. Connect the cables. Installing the Chime Module Install the optional chime module MC3 or MC8 in the wall housing by pressing the chime module over the 4 plastic standoffs attached to the wall housing as shown in Figure 10.
dmc3-4 Installing the dmc3-4 The dmc3-4 ships configured for a 3-wire retrofit system. If you are replacing a 4-wire system you must change the jumper setup on the dmc3-4 master. The jumper change must be completed before any cables are connected. To change the jumpers just pull them off the existing connection (Figure 12) and place them in the 4-wire position show in Figure 13.
dmc3-4 marked on the inside of the door access panel on the left side of the dmc3-4 master. Connect the green wire(s) from the patio station(s) to the Patio green terminal. Connect the patio Black wire(s) to the patio Black terminal. Note: Only two patio stations can be connected to the patio terminals. Connect the Red wire with the other Red wires to the Red terminal. Connect the White wire with the other White wires to the White terminal. Refer to Figure 14 for wire placement.
dmc3-4 Follow the steps below to attach a NuTone 300 Ohm twin lead antenna to the dmc3-4. 1. If the antenna has a plug on the end, cut the plug off 2. Strip the 2 wire ends 3. Connect the wire ends to terminal S1 and S2 on the antenna board 4. Connect a bare jumper wire (a 22 gauge speaker wire works well) between the S3 and S4 terminals. Follow the steps below to attach a separate AM/FM antenna system with 300 Ohm FM twin lead and orange AM antenna wire: 1.
dmc3-4 MC960 Power Amp Installation Run the MS7XSC cable from the dmc1H or dmc1HC wall housing to the remote power amplifier. MS 3XS C DMC 1H Run the MS3XSC cable from the Figure 17 - Power amp wiring remote amplifier to each volume MS 3XS C control (use the SVC96 for stereo or the MVC1 for mono). From each volume control, run the MS2SXSC to each respective speaker as shown in Figure 17.
dmc3-4 amplifier. From each volume control location, run a MS2SXSC cable to each satellite speaker (left & right) or mono as shown in Figure 19. Install the appropriate mounting ring for each respective speaker. Follow the instructions included with the speaker for specific dimensions on the mounting ring. Secure the MS2SXSC cable from the speaker’s respective volume control to avoid drywall damage. Door Release Options The door release option is a dry contact closure provided by the dmc3-4 master.
dmc3-4 Test the System After all connections have been made, insert the dmc3-4 power plug into TE5C transformer and secure the master to the wall housing using the 2 screws provided. If using the dmc1F, dmc1FC or dmc1FM frame with a dmc1CD player, install the master unit over the frame. Do not over tighten the screws as the plastic may distort or crack. Install the speaker panel on the master as shown in Figure 20.
dmc3-4 Appendix A – NuTone Systems ∗ M&S Part Number DMC1 DMC3-4 DMC1R, DMC1RS DMC1RW DMC3R, DMC3RS DMC3RW DMC4R, DMC4RS DMC4RW DMC1CD DMC1F DMCFM DMCFC DMCFR DMCFD DMC1H DMC1HC DMC1HR DMC1HRW DMC1HRWS MC3/MC8 DS3B BD3BN D3BN MCRC MCTX DMCRA NuTone IM3303 NuTone IM4406 X NuTone IM3204 X X X X X X X * X X * X X X X * X X X X * X X X * X X X * X X X X X X X X X X X X X X X X X X X X X X Refer to frames below: • DMCFM – Replacing a master only system with a dmc3-4 master • DMCFC – Replacing a c
dmc3-4 Appendix B – M&S Systems M&S P art Number DMC 1 DMC 3-4 DMC 1R , DMC 1RS DMC 1R W DMC 3R , DMC 3RS DMC 3R W DMC 4R , DMC 4RS DMC 4R W DMC 1C D DMC 1F DMC FM DMC FC DMC FR DMC FD DMC 1H DMC 1HC DMC 1HR DMC 1HR W DMC 1HR WS MC 3/MC 8 DS 3B BD3BN D3BN MC RC MC TX DMC R A M&S P art Number DMC 1 DMC 3-4 DMC 1R, DMC 1R S DMC 1RW DMC 3R, DMC 3R S DMC 3RW DMC 4R, DMC 4R S DMC 4RW DMC 1C D DMC 1F DMC FM DMC FC DMC FR DMC FD DMC 1H DMC 1HC DMC 1HR DMC 1HR W DMC 1HR W S MC 3/MC 8 DS 3B BD3BN D3BN MC R C MC TX
dmc3-4 M&S Systems 2-Year Warranty M&S Systems warrants its products to be free of defects for 2 years. The warranty period begins on either (a) the date of purchase or installation date of this product or (b) the date of closing on a new residence in which this product was originally installed. The warranty extends to the original user of the product and to each subsequent owner of the product during the term of the warranty. M&S will repair or replace, at its option, parts and materials at no charge.
