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Manual Emerson AC8

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  • Emerson AC8 - page 1

    S ITE M ONITORING AND S ERVICES AC 8 U SER M ANUAL ...

  • Emerson AC8 - page 2

    ...

  • Emerson AC8 - page 3

    i T ABLE OF CONTENTS 1.0 I NTRODUCTI ON 1.1 Methods of Viewing and Configuring the AC8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Data Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.3 Transformer Module . . . . . . . . ...

  • Emerson AC8 - page 4

    ii 5.0 V IEW S TA T U S O PT IONS 5.1 View Active Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5.1.1 Active A larms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 5.2 View Alarm Log . . . . ...

  • Emerson AC8 - page 5

    iii 7.6 Setup System - Setup Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 7.6.1 Set Up a Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 7.7 Setup System - Setup Outputs . . . . . . . . . . . . . . . ...

  • Emerson AC8 - page 6

    iv A PPENDIX A-S ERVICE T ERMINAL I NTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 A.1 Comparison of Functions: LCD and Service Terminal Interface . . . . . . . . . . . . . . . . . . . . . . 79 A.2 Connecting to the Service Terminal In terface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Emerson AC8 - page 7

    v FIGURES Figure 1 AC8 enclosure—external fe atures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Figure 2 AC8 enclosure—internal features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Figure 3 Typical Configuration . . . . . . . ...

  • Emerson AC8 - page 8

    vi ...

  • Emerson AC8 - page 9

    Introd uction 1 1.0 I NTRODUCTION The Liebert AC8 is ideal for coordinated co ntrol of systems with redundant equipment, such as multiple environmenta l units or pump s. When the AC8 con troller detects an alarm in an op erating device, the AC8 enables a standby d evice and controls the device in alarm as con figured, either leaving th at device op ...

  • Emerson AC8 - page 10

    Introd uction 2 1.5 Out side Enclosure Overview The AC8’s cont roller board comes in an encl osure that is 2-3/4" dee p and has a built-in li quid crystal display (LCD) an d a key lock, as shown in Figure 1 . The enclosure is made of metal to accommodate secure conduit fittings and protect comp onents against environmental debris. Figure 1 A ...

  • Emerson AC8 - page 11

    Introd uction 3 1.6 T ypical Configuration Figure 3 shows an example of external devices connected to the AC8’s co ntroller board. Up to eight devices may be connected to the eigh t digita l inputs and eight digital ou tputs. There may be up to four analog sensors connected to the an alog inputs, and up to two device s connected to th e control r ...

  • Emerson AC8 - page 12

    Introd uction 4 1.7 Controller Board Overview The AC8’s controller board has conne ctors for eight digital inputs, fo ur analog inputs, eigh t digital outputs, two control relay outputs and an EPOP co ntact input, as shown below. The board comes com- plete with light emitting diodes (L EDs) to displa y the status of con nected devices, a battery ...

  • Emerson AC8 - page 13

    Introd uction 5 J - Digital outpu t connectors Each of the eight output connections is a two-state point: ON/OF F (energized/de-energized). An example of a field digital output point is an air unit On/Off control circuit. 3.0: Wiring and Con nections 3.2.2: Connecting Digital Outputs 5.6: View Output Status 7.7: Setup System - Setup Outputs K - Sta ...

  • Emerson AC8 - page 14

    Introd uction 6 1.8 LED Indicators The AC8’s controller board has LED indicators that show the status of in puts, outputs and the com- mon alarm, as well as the modem, SiteScan Web and EPOP connections. T able 2 LED indicators summary LED Type LED Color Description EIA422 LEDs 422 TX Green AC8 is tran smitting informati on over the EIA422 port 42 ...

  • Emerson AC8 - page 15

    Introd uction 7 1.9 T ypical Sequence Figure 4 shows a typical sequence of h ow the AC8 func tions after detecting a change in a monitored device. Many responses de pend on configuration settings. This example shows what happens when a digital input changes state—assumin g the input is defined as alarmable—and when the condition returns to norm ...

  • Emerson AC8 - page 16

    Installation 8 2.0 I NST ALLATION This section provides instru ctions for installing, mounting and conne cting power to the AC8. 2.1 Inst allation Considerations The AC8 must be installed indoors an d may be mount ed on the surface of a wall or flush-mounted, depending on the us er’s applicatio n, the location of equipment and sensors to be mo ni ...

  • Emerson AC8 - page 17

    Installation 9 2.2 Surface-Mounting the AC8 After dete rmining where t o place the unit, check to ensure that yo u have all the hard ware required to install the panel on the surface of a wall. Obtain the need ed tools and material. Required tools • Electric drill (i f surface is too hard to drive scre ws without pilot holes) • Screwdriver • ...

  • Emerson AC8 - page 18

    Installation 10 2.3 Flush-Mounting the AC8 The AC8 may be flush-mounted acco rding to company practices—either with screws t hrough the sides of the panel into wall supp orts or with hanging hard ware that attaches to the back of the panel. After determining how and where to place the unit, chec k to ensure that you have all the hardware required ...

  • Emerson AC8 - page 19

    Installation 11 2.4 Connect Power to the AC8 The AC8 must be supplied with 11 5VAC or 230VAC; the power supplie d must match the rating of the unit’s Transformer Module. For information, consult your local de aler, Liebert representative or the Liebert World wide Support Gro up. The AC8 must be installed on a branch circuit protected by a certifi ...

  • Emerson AC8 - page 20

    Installation 12 24 V AC Output Power Connections To connect to the 24VAC outputs: 1. Install electrical wiring from device requ iring 24VAC power to the Transformer Module. 2. Use co pper wire only; proper wiring to use fo r power is 18 , 20 or 22 AWG copper wire. Strip wire 1/4". 3. There are two 24 VAC output connectors (TB1 and TB2). Termin ...

  • Emerson AC8 - page 21

    Wiring and Connections 13 3.0 W IRING AND C ONNECTIONS 3.1 Wiring S pecifications Input and output conn ections to the AC8 may be made in any order—it is not necessary, for example, to make all input connections before making any ou tput connections. Use copp er conductors only for all wiring. ! CAUTION Switch OFF electric power to the AC8 before ...

  • Emerson AC8 - page 22

    Wiring and Connections 14 3.2 Connecting Digit a l Inpu t s and Digital Output s The digital inputs, digital outputs and control rel ay outputs are found on the right side of the AC8’s printed wiring ass embly board. Each set has two terminal blocks—one green, th e other black: • Digital inputs: two terminal blocks, with four inputs per block ...

  • Emerson AC8 - page 23

    Wiring and Connections 15 3.2.2 Connecting Digit al Output s To connect a di gital output: 1. Turn OFF electrical power to the AC8. 2. If necessary, remove a conduit knockout to permit wire entry into the AC8 enclo sure. 3. Bring the wire(s) into the AC8 enclosure through a conduit knockout or access slot. 4. Loo sen the appropriate screw and slip ...

  • Emerson AC8 - page 24

    Wiring and Connections 16 3.2.4 Connecting Control Rela y Output s To connect a control relay output: 1. Turn OFF electrical power to the AC8. 2. If necessary, remove a conduit knockout to permit wire entry into the AC8 enclo sure. 3. Bring the wire(s) into the AC8 enclosure through a conduit knockout or access slot. 4. Loo sen the appropriate scre ...

  • Emerson AC8 - page 25

    Wiring and Connections 17 3.3 Connecting Analog Input s The analog input connector blocks are at the bottom center of the AC8 printed circuit board, as shown below right. The blocks are two-part assemblies to pe rmit easier connections. To determine the proper wire size, see Table 4 - Wiring spe cifications . To connect an input: 1. Turn OFF electr ...

  • Emerson AC8 - page 26

    Wiring and Connections 18 3.4 Connecting Common Alarm Output s The common alarm relay, found in the top right corner of the AC8, permits the user to conn ect auxiliary notification equipment, such as lights, horns and sirens, to the AC8. To determine the prop er wire size, see Ta ble 4 - Wiring specifications . There are two connectors fo r the com ...

  • Emerson AC8 - page 27

    Overview of Menus 19 4.0 O VERVIEW OF M ENUS There are two ways to access the AC8: the LCD on th e front of the enclosure and the Service Terminal Interface, which is acce ssible t hrough any computer using a co mmunications progra m. Many viewing and configuration tasks can be performed through either interface, but some are available only through ...

  • Emerson AC8 - page 28

    Overview of Menus 20 4.1 Opening Screen Overview The AC8 displays th e Opening Screen at startup, as shown in Figure 8 . • If any alarms are active, the Current Alarm screen ap pears. (Pressing any key on the LCD k eypad will silence the audib le alarm.) • If any analog input sensors ar e connected, the LC D screen will alternately di splay the ...

  • Emerson AC8 - page 29

    V i ew S tatus Options 21 5.0 V IEW S TAT U S O PTIONS The View Status menu allows any user to view current ly active alarms, m onitoring data stored in the alarm, event and trend logs, the status of all i nputs and outputs, and the four pager numbers. The arrows ↑↓ are used to scroll th rough the menu. The Enter ↵ key is used to select the m ...

  • Emerson AC8 - page 30

    V i ew S tatus Options 22 5.1 View Active Alarms The Active Alarm screen displa ys all alarms that are occurring, up to a maximum of 22. A Current Alarm screen appears automatica lly whenever an ala rm occurs—except during setup. This s creen can display only the two most recent active alarms. To view any other active alarms, use the View Active ...

  • Emerson AC8 - page 31

    V i ew S tatus Options 23 5.2 View Alarm Log The Alarm Log contains up to 99 reco rds of alarms that have occurred. Records are added to this log as alarms occur. To view t he Alarm Log : • From the Main Menu, use the arrows ↑↓ to choose View Status , then press Enter ↵. • From the View Status Menu, use the arrows ↑↓ to choose View Al ...

  • Emerson AC8 - page 32

    V i ew S tatus Options 24 5.3 View Event Log In addition t o alarms, the AC8 trac ks other changes in the Event Log to assist users with verifying operational and troublesh ooting problems. Events reflect changes in the status of an input that is defined as an event or the change o f state of an output (i.e., ma nually forced ON or OFF). Other even ...

  • Emerson AC8 - page 33

    V i ew S tatus Options 25 5.4 View T ren d Log The AC8 takes readings of configured an alog input sensors at regular intervals and s tores them in four separate trend logs, on e for each sensor. The time interval is 30 mi n utes. Each log contains up to 100 records. Follow these steps to select a sensor and view its trend log: 5.4.1 Select a Senso ...

  • Emerson AC8 - page 34

    V i ew S tatus Options 26 5.5 View Input S tatus The Input Status option allows you to view the curr ent status o f all inputs: the four analog sensor inputs and the eight di gital inputs. To view the Input Status: • From the Main Menu, use the arrows ↑↓ to choose View Status , then press Enter ↵. • From the View Status Menu, use the arro ...

  • Emerson AC8 - page 35

    V i ew S tatus Options 27 5.6 View Output St atus The Output Status option allows you to view the current status of all eight outputs. To view t he Output S tatus: • From the Main Menu, use the arrows ↑↓ to choose View Status , then press Enter ↵. • From the View Status Menu, use the arrows ↑↓ to choose View Output Status , then press ...

  • Emerson AC8 - page 36

    V i ew S tatus Options 28 5.7 View Pager Numbers The AC8 may be set up to dial pager numbers when an alarm is detected. Up to four pagers may be configured, as described in 7.8 - Setup System - Setup Modem & Pagers . The View Pager Numbers option allo ws you to view the pager numbers and PINs for all configured pagers. Use the following steps t ...

  • Emerson AC8 - page 37

    V i ew S tatus Options 29 5.8 View Operation The Operation opti on allows you to view the current settings for Auto Sequencing, Standby Testing and Staging in each zone. Use the following steps to select a zone and view the s tatus of these features. 5.8.1 Select a Zone To select a zone: • From the Main Menu, use the arrows ↑↓ to choose View ...

  • Emerson AC8 - page 38

    V i ew S tatus Options 30 5.9 View Control S tatus The Control Status option allows you to view the current status of the two control relays. To view t he Control Sta tus: • From the Main Menu, use the arrows ↑↓ to choose View Status , then press Enter ↵. • From the View Status Menu, use the arrows ↑↓ to choose View Control Status , t ...

  • Emerson AC8 - page 39

    Silence Alarm & Backup Log Files (Service Terminal Interface) 31 6.0 S ILENCE A LARM & B ACKUP L OG F ILES (S ERVICE T ERMINAL I NTERFACE ) This section de scribes two features that are av ailable in the Service Termi nal Interface: • Silence Alarm • Backup Log Files 6.1 Silence Alarm (Service T erminal Interface) The Silence Alarm menu ...

  • Emerson AC8 - page 40

    Silence Alarm & Backup Log Files (Service Terminal Interface) 32 6.2 Back Up Log Files (Service T erminal Interface only) The AC8 maintains three types of logs—alarm, event and trend—t hat may be backed up to a remote computer. This feature is available only through the Service Terminal Interface. To back up any of the al arm, event or tren ...

  • Emerson AC8 - page 41

    Silence Alarm & Backup Log Files (Service Terminal Interface) 33 5. At the top of the HyperTermina l window, sho wn below, click on Transfer , then on Receive File . 6. In the Receive File window, as shown above: • In the Place Receiv ed File in the Foll owing Folder box, enter the na me and locatio n of the folder where the configuration fil ...

  • Emerson AC8 - page 42

    System and Control Options 34 7.0 S YSTEM AND C ONTROL O PTIONS The System and Control menu allows you to configur e the AC8—setting up inpu ts and outputs and an input/ou tput matrix to trigger ac tion s, the modem and pagers, and system features such as da te and time. This menu also provides a vehicl e for manually changing the state of an out ...

  • Emerson AC8 - page 43

    System and Control Options 35 Figure 10 Menu overview - System and Con trol menu Opening Screen LIEBERT AC8 DD-MON-YY HR:MM:SS VX.XXX.X PRESS ↵ =STATUS/SETUP Main Menu VIEW STATUS > SYSTEM AND CONTROL ↑↓ =NEXT ↵ =SELECT Login Screen LOGIN AAAA ↑↓ =SELECT ↵ =NEXT/END System & Control menu Setup System selected System & Contr ...

  • Emerson AC8 - page 44

    System and Control Options 36 7.2 Setup System - Overview The Setup System screen displays seven options that al low you to configure input and output devices and their relation ships, the common alarm, the modem, pagers to be dialed when alarms occur, and a variety of system details, such as login password and system date and time: • Setup In pu ...

  • Emerson AC8 - page 45

    System and Control Options 37 7.3.1 Change Label (Name of Input) Each input has a default label ( Device_1, Device_2, etc.) th at you may change to a more descri ptive name for ease in recognizin g alarms and events associated with the input. Th e label may consist of up to eight characters (see Table 14 for valid characters). The device name assig ...

  • Emerson AC8 - page 46

    System and Control Options 38 7.3.4 Set Up Alarmable Inpu t s in Latched or Unlatched Mode Alarmable input points may be set up in Latched mode (Y), which requires the user to clear th e AC8 alarms aft er an alarm has occurred, or Unlatched mode (N ), in which al arms will automatically clear after a return-to-normal state. The default setting for ...

  • Emerson AC8 - page 47

    System and Control Options 39 7.4 Setup System - Setup Common Alarm The audible al arm sounds after the AC8 detects an alarm condition in any input that has been defined as alarmable, including digital a nd analog sensor inputs. O nce the alarm is silenced, th ere are two options: • By default, the common alarm remains ener gized until the input ...

  • Emerson AC8 - page 48

    System and Control Options 40 7.5 Setup System - Setup Sensor The AC8 has four analog sensor input points that may be conf igured individuall y. The panel monitors connected equipment for any 4-20 mA input—for exampl e, temperature and humidity. Each sen sor input is dedicated to a specific zon e: • Sensor_1 is for Zone 1 • Sensor_2 is for Zo ...

  • Emerson AC8 - page 49

    System and Control Options 41 7.5.1 Identify the Sensor as Connected To make use of an analog sensor, yo u must specify it as Connected (Y ). By default, analog sensors are Not co nnected (N). Disconnecting a sensor will turn off staging for that sensor’s zone if staging has been turned on for the zone (see 7.10.6 - Specify Staging for details on ...

  • Emerson AC8 - page 50

    System and Control Options 42 7.5.4 Change 4 mA V alue For the 4 mA value, enter the smalle st v alue for the range of the sen- sor—for example, 50°F for a tempe rature sensor with a range of 50°F to 90°F. The default value for each sensor is +045.0. Values that can be entered range from -999.9 to +999.9. To enter a new value: • From the Set ...

  • Emerson AC8 - page 51

    System and Control Options 43 7.5.7 Define Sensor as Alarmable or Event Each sensor may be defined as Alarmable (AL) or as an Event (EV). • For a sensor defined as alarmable, the following alarm reactions occur when the high-setpoint thresh old is crossed: the LCD flashes, the audible horn sounds, configured pa ger numbers will be not ified and a ...

  • Emerson AC8 - page 52

    System and Control Options 44 7.5.9 Change Low Setpoint When the sensor detects a condition below the Low Setpoint value, an alarm or event will occur, depend i ng on the sensor configuration. The Low Setpoint value must not be set below the sensor’s 4 mA value plus the offset value. For example, if the 4 mA value is 50°F and the Offset value i ...

  • Emerson AC8 - page 53

    System and Control Options 45 7.5.1 1 Set Up Delay Time Each sensor may be set up with a specified time delay between the triggering of a high or low setp oint—a monitored sensor crosses the high or low setpoint thre shold—and any response by the AC8. This fea- ture can prevent transient condit ion s from prompting unneces sary responses. This ...

  • Emerson AC8 - page 54

    System and Control Options 46 7.6 Setup System - Setup Zones The AC8 has four zones t hat may be used to defi ne different areas—rooms or sections of a room. If set up with four zones, the AC8 effectively performs as four separate units, controllin g each zone sepa- rately, for example, using a different rota tion sequence for de vices in each zo ...

  • Emerson AC8 - page 55

    System and Control Options 47 7.7 Setup System - Setup Output s The AC8 has eight outputs that may be configured individually. These ou tputs correspond to the eight numbered inputs. For example, Device_1 is the unit connected to Input 1 and to Output 1. The output name is the same as the input name, as described in 7.3.1 - Change Label (Name of In ...

  • Emerson AC8 - page 56

    System and Control Options 48 7.7.2 Define Ope rating or S t andby Mode Each output may be defi ned as Operating (OP), Standby (ST), or Not Used (NU). This setting takes preced ence over any setting in the over- ride menu (see 7.12 - Override Output ). The default settings are: • Outputs 1 and 2 are in Operating (OP) mode • Outputs 3 and 4 are ...

  • Emerson AC8 - page 57

    System and Control Options 49 7.8 Setup System - Se tup Modem & Pagers To use the modem and pager features, be sure to co nnect the phone line connector to a telephone wall jack using an RJ11 cord, as described in 3.6.2 - Phone Line Connector . 7.8.1 Modem Setup - Initia lization S tring The AC8 has an on-board modem that offers dial- up access ...

  • Emerson AC8 - page 58

    System and Control Options 50 International Dialing 7. To enable international dia ling involving cou ntries that do not support cou ntry code B5 (see Table 22 ), you must add the appropriate country code s to the initializati on string using the format: +GCI=xx where xx is the country code. (This also requires the modem mod el MT5600SMI; the model ...

  • Emerson AC8 - page 59

    System and Control Options 51 7.8.2 Modem Setup - Additiona l Features (Service T erminal Interface only) The Service Terminal Interface offe rs four additional opti ons for the modem that are not available through the LCD interface: • Enter AC8 phone number • Enable modem diag nostic messages • Change modem dial prefi x • Change modem hang ...

  • Emerson AC8 - page 60

    System and Control Options 52 Enable Modem Diagnost ic Messages Enabling modem d iagnostics will provide the following additiona l information about the modem to the computer using the Service Terminal Interface: • At the Enable Modem Diagnost ic Messages prompt, ente r Y (Yes - enable) or N (No - disable). The current setting appears i n bracket ...

  • Emerson AC8 - page 61

    System and Control Options 53 7.8.3 Pager Setu p - Pager Number and PIN The AC8 may be configured to dial numeric or al phanumeric pagers when an alarm is detect ed. You may enter up to four pager numbers—all configured pa gers will be dial ed each time an alarm occurs. For each configured pager, you mu st enter the pager number to be dialed and ...

  • Emerson AC8 - page 62

    System and Control Options 54 Enter a Pager Number • From the Setup Pager Menu, choose Setup Pager Number for the selected pager— Setup Pager 1 Number in the example at right—and press Enter ↵ . • See Table 24 for guidelines on enteri ng the pager number, which may consist of up to 40 charac ters. To enter the pager number: • Use the ar ...

  • Emerson AC8 - page 63

    System and Control Options 55 7.8.4 Pager Setu p - Communications Check (Service T erminal Interface only) The Service Terminal Interface offe rs two additional op tions for pager setup, which are not available through the LCD interface: • Enable communications check • Enter time to perform communications check To access these options: • Conn ...

  • Emerson AC8 - page 64

    System and Control Options 56 Enable Communications Check Enabling this function permits a daily communications test between the AC8 and the selected pager. Once each day the AC8 dials the pager at a sp ecified time and sends this message: “AC8 COMM CHECK.” (The time of the test is specified at the next prompt, Enter Time To Perform Communi- ca ...

  • Emerson AC8 - page 65

    System and Control Options 57 7.9 Setup System - Setup System Info The Setup System Info options allow users to: • Change Passw ord —used for access to system setup functions • Change Date & Time/Automatic Dayli ght Saving Time —used to set the AC 8’s date and time and to enable automatic time ch ange for Daylight Saving Time • Setu ...

  • Emerson AC8 - page 66

    System and Control Options 58 7.9.1 Change Password A password is required to access the AC8’s system and control options, as described i n 7.1 - Logi n . The password consists of four characters (see Table 14 for valid characters). The default password is AAAA. Change the Password To change the password: • From the Setup System Info Menu, use ...

  • Emerson AC8 - page 67

    System and Control Options 59 7.9.3 Setup Site ID You may enter a Site ID to identify the AC8’s locati on, using a name that may consist of up to 40 characters (see Table 14 for valid charac- ters). The Site ID will appear with each alarm. To enter or change the Site ID: • From the Setup System Info Menu, use the arrows ↑↓ to choose Setup S ...

  • Emerson AC8 - page 68

    System and Control Options 60 7.9.5 Backup and Uplo ad Configuration File (Service T erminal Interface only) This operation may be performed only through the Se rvice Terminal Interface. It permits the user to make a copy of the AC8’s configuration setting s and save it as a file on the computer connected through the RS232 port. Should the need a ...

  • Emerson AC8 - page 69

    System and Control Options 61 Back Up the Conf iguration File 8. At the prompt to Initiate a Ba ckup of Configuration Fil e, enter Y (Yes - begin) or N (No - cancel). The current setting appears in brackets—[ N] in the following example. 9. At the top of the HyperTermina l window, sho wn below, click on Transfer , then on Receive File . 10. In th ...

  • Emerson AC8 - page 70

    System and Control Options 62 Upload the Configuration File 13. At the prompt to Initiate an Upload of Configura tion File, enter Y (Yes - begin) or N (No - cancel). The current setting appears in brackets—[ N] in the following example. 14. At the top of the HyperTermina l window, shown bel ow, click o n Transfer , then on Send File . 15. In the ...

  • Emerson AC8 - page 71

    System and Control Options 63 7.9.6 Setup Se rv Ph Num - Enter Phone Number The Service Phone Number (Serv Ph Num) is used fo r r emote monitoring by Liebert Global Services. The number is designed to allow re mote monitoring services to connect to the AC8. Al l alarms will b e sent to this n umber. When an alarm occurs, this number is dialed befor ...

  • Emerson AC8 - page 72

    System and Control Options 64 7.9.7 Setup Se rv Ph Num - Communications Check (Servic e T erminal Interface only) The Service Terminal Interface offers two additiona l options for setting up the Service Phone Number (Serv Ph Num) that are not available through the LCD interface: • Enable communications check • Enter time to perform communicatio ...

  • Emerson AC8 - page 73

    System and Control Options 65 7.9.8 Factory Default s At any time, you may restore all defa ult values for settings in the AC8 as it was shipped. The password is the sole exceptio n when reverting to the factory default settings. The pas sword can be reset to the factory default of AAAA only through the DIP switches. Fo r details, see Change Passwo ...

  • Emerson AC8 - page 74

    System and Control Options 66 2. The firmware update is a two-step process—this step describes how to upload the file prog###.s19 (where ### is a number—for example , prog118.s19) to the AC 8: a. At the top of the HyperTermina l w indow, shown below, click on Transfer , then on Send File . b. In the Send File window, as shown above: • In the ...

  • Emerson AC8 - page 75

    System and Control Options 67 7.9.10 Initiate Remote Alarm T est (Service T erminal Interface only) The service phone number is used for remote monito ring by Liebert Global Services. The Service Ter- minal Interface may be used to test communicati ons between the A C8 and the service modem. This test will send a “DIAL OUT TEST PASSE D” message ...

  • Emerson AC8 - page 76

    System and Control Options 68 7.10 Setup Operation The AC8’s operation features allow you to set up a rotation sequence to alternate which devices are operating an d which are placed on Standby, as well as test devices while in Standby mode and specify what to do when a Standby device goes into alarm as it is powered up. You may specify delay tim ...

  • Emerson AC8 - page 77

    System and Control Options 69 7.10.1 T urn Automatic Sequencing On or Off Use automatic sequencing to set up a schedule for rotation of redundant devices. For example, three devices might be in operating mode while a fourth device is in stan dby mode. Every two days, the AC8 returns the standby device to operating mode and places one of the operat ...

  • Emerson AC8 - page 78

    System and Control Options 70 7.10.2 T urn S t andby T esting On or Off Standby testing permits scheduling an automatic op erational check of de vices in Standby mode. When this featu re is activated (ON), the AC8 tests all devi ces in Standby mode by pu tting each device in operating mode for a designated time . If an operating unit is d esignated ...

  • Emerson AC8 - page 79

    System and Control Options 71 7.10.4 Specify Hold Delay T ime After an output changes state, the hold delay timer directs the AC8 to ignore all inp uts in the same zone for the specified time. This delay is the amount of time that must elapse before the AC8 acknowledges a change of state in any input. The default is 10 minute s (displayed as 10 MIN ...

  • Emerson AC8 - page 80

    System and Control Options 72 7.10.6 Specify S t aging Staging allows a s tandby device to be turned On when a sensor dete cts a monitored point reaching a specified setpo int. The AC8 continues to turn On additional standby u nits, if available, at sp ecified intervals. Staging also turns Off devices as th e condition returns to normal. Devi ces a ...

  • Emerson AC8 - page 81

    System and Control Options 73 7.1 1 Setup System - Setup I/O Matrix The Setup I/O Matrix menu allows you to configure the AC8 ’s digital and analog inputs to trigg er var- ious actions in either or both of the tw o control re lays. Each relay can be se t up to respond to more than one digital or analog input. Almost any mapping combinati on can b ...

  • Emerson AC8 - page 82

    System and Control Options 74 7.1 1.2 Set Up Mapping for an Analog Sensor Input • Use the arrows ↑↓ to choose Map Sensor To Relay from the Map Input/Sensor Menu, and press Enter ↵ . • From the Select Sensor Menu, choo se the input you want—for example, Sensor_1 High Stpt —and press Enter ↵ . Map Sensor to Contro l Relay • On the S ...

  • Emerson AC8 - page 83

    System and Control Options 75 7.12 Override Output The Override Output feature allows you to manually change the state of any di gital output to ON or OFF, overriding automatic control by the AC8 (the default setting for all outputs). This menu also allows you to release the m anual override, returning any output to automatic control. There are two ...

  • Emerson AC8 - page 84

    System and Control Options 76 7.13 Clear Alarms & Logs The Clear Alarms & Logs menu allows you to clea r active alarms or delete all records from any of the AC8’s three lo gs: alarm, event and trend logs. To clear alarms or logs: Log In and Choose Clear Alar ms & Logs • From the Main Menu, use the arrows ↑↓ to choose System and ...

  • Emerson AC8 - page 85

    System and Control Options 77 7.13.3 Clear the Event Log The event log contains up to 99 reco rds of events detected by the AC8. You may want to clear the log after backing up the file or simply to free up space. To delete all records from the event log: • From the Clear Alarms / Lo gs Menu, use the arrows ↑↓ to choose Clear Event Log , then ...

  • Emerson AC8 - page 86

    Specifications 78 8.0 S PECIFICATIONS 8.1 AC8 Specifications Power Requirements Transformer Module NOTE 115VAC UML11500 230VAC UML23000 If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. 115VAC ±10% of nominal; 60Hz, 4A, 460VA 230VAC ±10% of nominal; 50Hz, 0.5A, 115VA ...

  • Emerson AC8 - page 87

    Comparison o f Functions: LCD and Service T erminal Interface 79 A PPENDIX A- S ERVICE T ERMINAL I NTER FACE The Service Terminal Interface allows access to all functions of the AC8, incl uding some that are not possible through the LCD interface. This interface is accessible th rough any computer using a com- munications program such as Microsoft ...

  • Emerson AC8 - page 88

    Connecting to the Service Terminal Interface 80 A.2 C ONNECTING TO THE S ERVICE T ERMINAL I NTERFACE This section describes how to set up and connect to the Service Terminal Interface. A.2.1 Connection Methods There are two ways to access th e Service Terminal Interface: • Direct —Use a null modem cable to connect a comput er’s COM1 port to t ...

  • Emerson AC8 - page 89

    Connecting to the Service Terminal Interface 81 5. In the Connect To window, shown below, select the appropriate connec tion method from the Connect Using drop-down list: A.2.3 Set Up the COM1 Port - Direct Connection Only The following steps apply only to setting up a dire ct connection to the Servic e Terminal Interface via the AC8’s RS232 port ...

  • Emerson AC8 - page 90

    Connecting to the Service Terminal Interface 82 A.2.4 Set Up the Connection’ s Properties The following steps are needed for both direct and remote connection to the AC8. Properties Setup 8. Open the Properties wi ndow by clicking on File , then on Pro perties , as shown below left. 9. In the Propertie s window, above right, click on the Settings ...

  • Emerson AC8 - page 91

    Connecting to the Service Terminal Interface 83 A.2.5 Connect to the Service T erminal Interface After creating and setting up a connection, use a communic ations program such as HyperTerminal to access the AC8’s Servic e Terminal Interface. 1. Verify communications connections betw een the remote computer and the AC8: a. For direct connection ( ...

  • Emerson AC8 - page 92

    Overview of Menus 84 A.3 O VERVIEW OF M ENUS The Main Menu offers choices for viewing the status of the AC 8, silencing the audi ble alarm and backing up the unit’s lo g files. It also allows access to the Sy stem and Control features, which requ ire a password. The following shows where to find examples of the Main Menu screens: A.3.1 View St at ...

  • Emerson AC8 - page 93

    Vi ew St at us M en us 85 A.4 V IEW S TAT U S M ENUS The View Status menu allows any user to view current ly active alarms, m onitoring data stored in the alarm, event and trend logs, the status of all i nputs and outputs, and the four pager numbers. Main Menu After connecting to the Service Terminal Interface, the Main Menu appears, as shown below ...

  • Emerson AC8 - page 94

    Vi ew St at us M en us 86 A.4.2 View Alarm Log For details on this feature, see 5.2 - View Alar m Log . V iew Alarm Log ALARM LOG Alarm history SENSOR_2 8 0.0 DEG HIGH SETPOINT ALARM 29-AUG-05 09:2 9:10 MODEM INTERNAL FAUL T 29-AUG-05 09:2 0:10 DEVICE_8 ALARM CONTACT CLOSE D 29-AUG-05 09:1 9:10 SENSOR_2 7 9.0 DEG RETURN TO NORMAL 28-AUG-05 19:2 9:1 ...

  • Emerson AC8 - page 95

    Vi ew St at us M en us 87 A.4.3 View Event Log For details on this feature, see 5.3 - View Event Log . Vi ew E v e nt L o g EVENT LOG Event history PAGER UNSUCCESSFUL PAG E 23-OCT-05 18:05: 26 DEVICE_3 STAR TED 23-OCT-05 18:0 3:17 DEVICE_3 ON CONTACT CLOSE D 23-OCT-05 18:0 3:17 DEVICE_2 STAR TED 23-OCT-05 18:0 3:11 <ENTER>=MORE <ES C>=E ...

  • Emerson AC8 - page 96

    Vi ew St at us M en us 88 A.4.4 View T rend Log For details on this feature, see 5.4 - View Trend Log . V iew Trend Log TREND LOG Trend history for each sensor Select sensor for trend you want to v iew. 1=SENSOR_1 2=SENSOR_2 3=SENSOR_3 4=SENSOR_4 5=RETURN TO MA IN MENU SELECT A NUMBER:1 TREND LOG Trend history SENSOR_1 7 5.4 DEG NORMAL 28-AUG-05 15 ...

  • Emerson AC8 - page 97

    Vi ew St at us M en us 89 A.4.5 View Input S t atus For details on this feature, see 5.5 - View Input Status . A.4.6 View Output St atus For details on this feature, see 5.6 - View Output Status . V iew Input & Sensor Status INPUT & SENSOR STATUS Sensor values & discre te inputs status INPUT STATUS SENSOR_1 80.0 DEG SENSOR_2 ------ DEG ...

  • Emerson AC8 - page 98

    Vi ew St at us M en us 90 A.4.7 View Pager Numbers For details on this feature, see 5.7 - View Pager Number s . V iew Pager Numbers PAGER & PIN NU MBERS Numbers to dial for an alarm PAGER 1 NUMBE R A1,8005551212 PAGER 1 PIN 0123456789101 1121314 PAGER 2 NUMBE R A9W1,80055512 12 PAGER 2 PIN 0123456789101 1121314 <ENTER>=MORE <ES C>=E ...

  • Emerson AC8 - page 99

    Vi ew St at us M en us 91 A.4.8 View Operation For details on this feature, see 5.8 - View Operation . A.4.9 View Control St atus For details on this feature, see 5.9 - View Control Status . V iew Operation OPERATION STATUS Autosequencing and Standby Testing 1=ZONE 1 2=ZONE 2 3=ZONE 3 4=ZONE 4 5=RETURN TO MA IN MENU SELECT A NUMBER:1 ZONE 1 AUTO SE ...

  • Emerson AC8 - page 100

    Silence Alarm & Back Up Log Files (Service Terminal Interface only) 92 A.5 S ILENCE A LARM & B ACK U P L OG F ILES (S ERVICE T ERMINAL I NTERFACE ONLY ) This section presents two option s from the Main Menu that are av ailable via the Service Termina l Interface only. Main Menu After connecting to the Service Terminal Interface, the Main Me ...

  • Emerson AC8 - page 101

    Silence Alarm & Back Up Log Files (Service Terminal Interface only) 93 A.5.2 Back Up Log Files (Service T erminal Interface only) For details on this feature, see 6.2 - Back Up Log Files (Service Te rminal Interface only) . Back Up Alarm Log File Back Up Event Log File Backup Log Files - Alarm Log File BACKUP LOG FILE S Backup alarm, e vent and ...

  • Emerson AC8 - page 102

    Silence Alarm & Back Up Log Files (Service Terminal Interface only) 94 Back Up T rend Log Files Backup Log Files - T rend Log Files BACKUP LOG FILE S Backup alarm, e vent and trend log files 1=BACKUP ALARM LOG FILE 2=BACKUP EVENT LOG FILE 3=BACKUP TREND LOG FILE-SENSOR_1 4=BACKUP TREND LOG FILE-SENSOR_2 5=BACKUP TREND LOG FILE-SENSOR_3 6=BACKUP ...

  • Emerson AC8 - page 103

    Setup Menu 95 A.6 S ETUP M ENU The Setup menu allows the user to configure the AC8—setting u p inputs and outputs and an input/ output matrix to trigger actions, the modem and pa gers, and system features su ch as date and time. This menu also provides a vehicle for manuall y changi ng the state of an output to ON or OFF, clear- ing active alarms ...

  • Emerson AC8 - page 104

    Setup Menu 96 Setup Menu This section presents Service Terminal In terface screens for ea ch of the following: * Setup System Information features are: • Change Password • Set Date & Time/Automatic Daylight Savi ng Time • Setup Site ID • Connect Battery • Backup and Upload Configuration File (Service Terminal Interface only) • Setup ...

  • Emerson AC8 - page 105

    Setup Menu 97 A.6.1 Setup Inputs For details on this feature, see 7.3 - Setup System - Setup Inputs . A.6.2 Setup Common Alarm For details on this feature, see 7.4 - Setup System - Setup Common Alarm . Setup Inputs SETUP INPUTS Setup input of device Select input t o edit INPUT DEFIN ITION 1=DEVICE_1 NO-EV-NL -00:01 2=DEVICE_2 NO-AL-L -00 :01 3=DEVI ...

  • Emerson AC8 - page 106

    Setup Menu 98 A.6.3 Setup Sensor For details on this feature, see 7.5 - Setup System - Setup Sensor . Setup Sensor SETUP SENSOR Setup for ana log input points Select sensor to edit SENSOR VA LUE 1=SENSOR_1 80.0 DEG 2=SENSOR_2 -- ---- DEG 3=SENSOR_3 80.0 DEG 4=SENSOR_4 79.5 RH 5=RETURN TO SE TUP MENU 6=RETURN TO MA IN MENU SELECT A NUMBER:1 >IS T ...

  • Emerson AC8 - page 107

    Setup Menu 99 A.6.4 Setup Zones For details on this feature, see 7.6 - Setup System - Setup Zones . A.6.5 Setup Output For details on this feature, see 7.7 - Setup System - Setup Outputs . Setup Zones SETUP ZONES Select zones an d number of devices in the zone ZONES # DEVICES 1=ZONE 1 4 2=ZONE 2 0 3=ZONE 3 0 4=ZONE 4 0 5=RETURN TO SE TUP MENU 6=RET ...

  • Emerson AC8 - page 108

    Setup Menu 100 A.6.6 Setup Modem & Pagers For details on this topic, see 7.8 - Setup System - Setup Modem & Pagers . Pager Setup For details on this feature, see 7.8.3 - Pager Setup - Pager Number and PIN and 7.8.4 - Pager Setup - Communications Check (Ser vice Terminal Interface on ly) . Setup Modem & Pagers - Pager Setup SETUP MODEM&a ...

  • Emerson AC8 - page 109

    Setup Menu 101 Modem Setup For details on this feature, see 7.8.1 - Modem Setup - Initialization String and 7.8.2 - Modem Setup - Additional Featu res (Service Terminal Interface on ly) . Setup Modem & Pagers - Modem Setup SETUP MODEM&PAGERS Input pager a nd modem informa tion Select pager or modem CURRENT NUMBE R ************* ****** 1=PAG ...

  • Emerson AC8 - page 110

    Setup Menu 102 A.6.7 Setup System Info This section presents Service Terminal Interface s creens for choices 1 throug h 9 in the Setup System Information menu show n below. For details on this topic, see 7.9 - Setup System - Setup System Info . Change Password For details on this feature, see 7.9.1 - Change Password . Setup System Info SETUP SYSTEM ...

  • Emerson AC8 - page 111

    Setup Menu 103 Set Date & T ime/Automatic Daylight Saving T ime For details on this feature, see 7.9.2 - Change Date & Time/Automatic Da ylight Saving Time . Setup Site ID For details on this feature, see 7.9.3 - Setup Site ID . Connect Battery For details on this feature, see 7.9.4 - Connect Battery . Set Date & Time SET DATE & TIM ...

  • Emerson AC8 - page 112

    Setup Menu 104 Backup and Upload Configuration File (Servic e T erminal Interface only) For details on this feature, see 7.9.5 - Backup and Upload Config uration File (Service Termi- nal Interface only) . Backup & Upload Configuration File - Backup BACKUP & UPLOAD CONFIGURATION FILE Backup from panel saves pan el configurations Upload to pa ...

  • Emerson AC8 - page 113

    Setup Menu 105 Setup Service Phone Number For details on this feature, see 7.9.6 - Setup Serv Ph Num - Enter Phone Number an d 7.9.7 - Setup Serv Ph Num - Communications Ch eck (Service Terminal Interface onl y) . Factory Default s For details on this feature, see 7.9.8 - Factory Defaults . Setup Service Phone Number SETUP SERVICE PHONE NUMBER This ...

  • Emerson AC8 - page 114

    Setup Menu 106 Firmware Up date (Service T erminal Interface only) For details on this feature, see 7.9.9 - Perform Firmware Update (Service Terminal Interface only) . Initiate Remote Alarm T est (Service T erminal Interface only) For details on this feature, see 7.9.10 - Initiate Remote Alarm Test ( Service Terminal I nterface only) . Firmware Upd ...

  • Emerson AC8 - page 115

    Setup Menu 107 A.6.8 Setup Operation For details on this feature, see 7.10 - Setup Operation . Auto Sequencing For details on this feature, see 7.10.1 - Turn Automatic Sequenci ng On or Off . Setup Operation - Auto Sequen cing SETUP OPERATION BY ZON E Select the zon e for which operation is to change ZONE 1=ZONE 1 2=ZONE 2 3=ZONE 3 4=ZONE 4 5=RETUR ...

  • Emerson AC8 - page 116

    Setup Menu 108 St andby T esting For details on this feature, see 7.10.2 - Turn Standby Testing On or Off . Setup Operation - S tandby T esting SETUP OPERATION BY ZON E Select the zon e for which operation is to change ZONE 1=ZONE 1 2=ZONE 2 3=ZONE 3 4=ZONE 4 5=RETURN TO SE TUP MENU 6=RETURN TO MA IN MENU SELECT A NUMBER:1 SETUP OPERATIO N Select o ...

  • Emerson AC8 - page 117

    Setup Menu 109 Failed S t andby For details on this feature, see 7.10.3 - Specify Failed Standby Response . Setup Operation - Failed S tandby SETUP OPERATION BY ZON E Select the zon e for which operation is to change ZONE 1=ZONE 1 2=ZONE 2 3=ZONE 3 4=ZONE 4 5=RETURN TO SE TUP MENU 6=RETURN TO MA IN MENU SELECT A NUMBER:1 SETUP OPERATIO N Select ope ...

  • Emerson AC8 - page 118

    Setup Menu 110 Hold Delay For details on this feature, see 7.10.4 - Specify Ho ld Delay Time . Setup Operation - Hold Delay SETUP OPERATION BY ZON E Select the zon e for which operation is to change ZONE 1=ZONE 1 2=ZONE 2 3=ZONE 3 4=ZONE 4 5=RETURN TO SE TUP MENU 6=RETURN TO MA IN MENU SELECT A NUMBER:1 SETUP OPERATIO N Select operation to edi t fo ...

  • Emerson AC8 - page 119

    Setup Menu 111 Rest art Delay For details on this feature, see 7.10.5 - Specify Restar t Time . Setup Operation - Restar t Delay SETUP OPERATION BY ZON E Select the zon e for which operation is to change ZONE 1=ZONE 1 2=ZONE 2 3=ZONE 3 4=ZONE 4 5=RETURN TO SE TUP MENU 6=RETURN TO MA IN MENU SELECT A NUMBER:1 SETUP OPERATIO N Select operation to edi ...

  • Emerson AC8 - page 120

    Setup Menu 112 Stagi ng For details on this feature, see 7.10.6 - Specify Staging . Setup Operation - S taging SETUP OPERATION BY ZON E Select the zon e for which operation is to change ZONE 1=ZONE 1 2=ZONE 2 3=ZONE 3 4=ZONE 4 5=RETURN TO SE TUP MENU 6=RETURN TO MA IN MENU SELECT A NUMBER:1 SETUP OPERATIO N Select operation to edi t for zone 1 OPER ...

  • Emerson AC8 - page 121

    Setup Menu 113 A.6.9 Override Output For details on this feature, see 7.12 - Override Output . Override Output OVERRIDE OUTP UT Manually overr ide an output Select output to overri de OUTPUT CON TROL 1=DEVICE_1 AUTO ************************* ******************* 2=DEVICE_2 AUTO AUTO = CONTROL BY PANEL 3=DEVICE_3 AUTO FORCE ON = FORCE ON BY OP ERATOR ...

  • Emerson AC8 - page 122

    Setup Menu 114 A.6.10 Clear Alarms & Logs For details on this topic, see 7.13 - Clea r Alarms & Logs . Clear Active Alarms For details on this feature, see 7.13.1 - Clear Activ e Alarms . Clear the Alarm Log For details on this feature, see 7.13.2 - Clear the Alarm Log . Clear Alarms & Logs - Clear Active Alarms CLEAR ALARMS& LOGS C ...

  • Emerson AC8 - page 123

    Setup Menu 115 Clear the Event Log For details on this feature, see 7.13.3 - Clear the Event Log . Clear the T rend Logs For details on this feature, see 7.13.4 - Clear the Trend Logs . Clear Alarms & Logs - Clear the Event Log CLEAR ALARMS& LOGS Clear active alarms or log record s Select the lo g to clear 1=CLEAR ACTIVE ALARM S 2=CLEAR ALA ...

  • Emerson AC8 - page 124

    Setup Menu 116 A.6.1 1 Setup I/O Matrix For details on this feature, see 7.11 - Setup System - Setup I/O Matrix . Setup I-O Matrix - Map Input to Control Relay Setup I-O Matrix - Map Sensor to Contro l Relay SETUP I/O MATRI X Program input & se nsors to control r elays Select to ma p inputs or sensors 1=MAP INPUT TO CO NTROL RELAY 2=MAP SENSOR ...

  • Emerson AC8 - page 125

    Setup Menu 117 A PPENDIX B- D EFAULT S ETTINGS Q UICK R EFERENCE G UIDE This appendi x provides a quick reference to defaul t settings for the AC8. Th ese settings also appear throughout the manual. T able 35 AC8 - default set tings for input s and outputs DEFAULT SETTINGS - DIGITAL INPUTS (FROM Ta ble 15) Feature Default Other Options LABEL DEVICE ...

  • Emerson AC8 - page 126

    Setup Menu 118 T able 36 AC8 - other default se ttings DEFAULT SETTINGS - operation features (FROM Table 28) Feature Default Other Options AUTO SEQUENCING OFF (Deactivated) ON (Activated), 12h (Activated for 12-hour intervals) STANDBY TESTING OFF (Deactivated) ON (Activated ) FAILED STANDBY N (Deactivate d) Y (Activated) HOLD DELAY 10:00 (No delay) ...

  • Emerson AC8 - page 127

    ...

  • Emerson AC8 - page 128

    The Comp any Behind the Products With over a million installations around th e globe, Liebert is the world leader in computer protection systems. Since its founding in 1965, Liebert has developed a complete range of support and protection systems fo r sensitive electronics: • Env ironmental sys tems—close-control air conditioning from 1 to 60 t ...

Manufacturer Emerson Category Switch

Documents that we receive from a manufacturer of a Emerson AC8 can be divided into several groups. They are, among others:
- Emerson technical drawings
- AC8 manuals
- Emerson product data sheets
- information booklets
- or energy labels Emerson AC8
All of them are important, but the most important information from the point of view of use of the device are in the user manual Emerson AC8.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Emerson AC8, service manual, brief instructions and user manuals Emerson AC8. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Emerson AC8.

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A complete manual for the device Emerson AC8, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Emerson AC8 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Emerson AC8.

A complete Emerson manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Emerson AC8 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Emerson AC8, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Emerson AC8, that we can find in the current document
3. Tips how to use the basic functions of the device Emerson AC8 - which should help us in our first steps of using Emerson AC8
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Emerson AC8
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Emerson AC8 in a specific country, if it was not possible to solve the problem on our own.

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