Panasonic Kx Ta824 Installation Manual

							2.2 Installing the Advanced Hybrid System
Installation Manual 31
Note
To remove the rivet, use a screwdriver as shown below. 
						

							2.2 Installing the Advanced Hybrid System
32 Installation Manual
2.2.5 Connecting Frame Ground
IMPORTANT
Connect the frame of the PBX to ground.
 Be sure to comply with all applicable laws, regulations, and guidelines.
 Proper grounding is very important to protect the PBX from external noise and to reduce the risk 
of electrocution in the event of a lightning strike.
 The AC cables grounding pin may not be enough to protect the PBX from external noise and 
lightning strikes. A permanent connection must be made between ground and the ground 
terminal of the main unit.
In most of the continental United States, the ground provided by the Third wire ground at the 
commercial power outlet will be satisfactory. However, in a small percentage of cases this ground may 
be installed incorrectly. Therefore, the following test procedure should be performed.
Test Procedure
1.Obtain a suitable voltmeter and set it for a possible reading of up to 250 V AC.
2.Connect the meter probes between the 2 main AC voltage points on the wall outlet. The 
reading obtained should be 108 V AC to 132 V AC.
3.Move one of the meter probes to the 3rd prong terminal (GND).
Either the same reading or a reading of 0 volt should be obtained.
4.If a reading of 0 volt at one terminal and a reading of 108 V AC to 132 V AC at the other 
terminal is not obtained, the outlet is not properly grounded.
This condition should be corrected by a qualified electrician (per article 250 of the National 
Electrical Code).
5.If a reading of 0 volt at one terminal and a reading of 108 V AC to 132 V AC at the other 
terminal is obtained, then set the meter to the OHMS/RX1 scale, place one probe at the 
GND Terminal and the other probe at the terminal which gave a reading of 0 volt.
A reading of less than 1 ohm should be obtained. If the reading is not obtained, the outlet is 
not adequately grounded. See qualified electrician.
1.Loosen the screw.
2.Insert a grounding wire (user-supplied)*.
3.Tighten the screw.
4.Connect the grounding wire to ground.
*
Use a grounding wire that has a conductor with a cross-sectional area of at least 0.75 mm
2 or 18 
AWG. Green-and-yellow insulation is required.
Screw
To Ground Grounding Wire 
						

							2.2 Installing the Advanced Hybrid System
Installation Manual 33
2.2.6 Wall Mounting
The PBX is designed for wall mounting only. The wall where the PBX is to be mounted must be able 
to support the weight of the PBX. When wall mounting the main unit, use either the included screws, 
or screws of the same size.
Mounting on a Wooden Wall
The included screws may be used when mounting the main unit on a wooden wall.
1.Place the template (found on the last page of this manual) on the wall to mark the 3 screw 
positions.
Note
When you print out the template, the distance on the paper output may deviate slightly from the 
indicated measurement. In this case, use the indicated measurement.
2.Fit the washers on the screws, and drive the screws into the wall.
3.Affix the PBX to the screw heads.
Notes
 Do not block the openings of the cabinet. Leave at least 20 cm (8 in) of space above and 10 
cm (4 in) to the sides of the PBX for ventilation.
 Make sure that the wall behind the cabinet is flat and free of obstacles, so that the openings 
on the back of the cabinet will not be blocked.
 Be careful not to drop the cabinet.
Template 
Washer
Drive the screw
to this point. 
						

							2.2 Installing the Advanced Hybrid System
34 Installation Manual
Mounting on a Concrete or Mortar Wall
The included screws may be used when mounting the main unit on a concrete or mortar wall. User-
supplied anchor plugs are also necessary.
1.Place the template (found on the last page of this manual) on the wall to mark the 3 screw 
positions.
Note
When you print out the template, the distance on the paper output may deviate slightly from the 
indicated measurement. In this case, use the indicated measurement.
2.Drill holes in the wall as marked and fit the anchor plugs (not included) into the holes.
3.Fit the washers on the screws, and drive the screws into the anchor plugs.
4.Affix the PBX to the screw heads.
Template 
Hammer
29 mm
(1-1/8 in) Anchor Plug
6.4 mm
(1/4 in)
Drive the screw
to this point. 
						

							2.2 Installing the Advanced Hybrid System
Installation Manual 35
Notes
 Do not block the openings of the cabinet. Leave at least 20 cm (8 in) of space above and 10 
cm (4 in) to the sides of the PBX for ventilation.
 Make sure that the wall behind the cabinet is flat and free of obstacles, so that the openings 
on the back of the cabinet will not be blocked.
 Be careful not to drop the cabinet. 
						

							2.2 Installing the Advanced Hybrid System
36 Installation Manual
2.2.7 Installing Surge Protector
Overview
A massive electrical surge can be caused if lightning strikes a telephone cable 10 m (33 ft) above 
ground, or if a telephone line comes into contact with a power line. A surge protector is a device that 
is connected to an outside (CO) line to prevent potentially dangerous electrical surges from entering 
the building via the outside (CO) lines and damaging the PBX and connected equipment.
To protect the PBX from electrical surges, we strongly recommend connecting the PBX to a surge 
protector that meets the following specifications:
– Surge arrestor type: 3-electrode arrestor
– DC spark-over voltage: 230 V
– Maximum peak current: at least 10 kA
Additionally, proper grounding is very important for the protection of the PBX. (→ 2.2.5 Connecting 
Frame Ground)
Many countries/areas have regulations requiring surge protection. Be sure to comply with all 
applicable laws, regulations, and guidelines.
Installation
Extn.
Surge 
Protector Outside 
(CO) Line
Terminal 
Board Outside 
(CO) LinePBX Outside 
(CO) Line
Extn.
Ground
Extn.
Frame GroundSLT PT
Extn.: Extension Line 
						

							2.2 Installing the Advanced Hybrid System
Installation Manual 37
Outside Installation
If you install an extension outside of the building, the following precautions are recommended:
a.Install the extension wire underground.
b.Use a conduit to protect the wire.
Note
The surge protector for an extension is different from that for an outside (CO) line.
Installation of a Ground Rod
1.Connect the ground rod to the surge protector using a grounding wire with a cross-sectional area 
of at least 16 AWG.
SLTPT(Main Building)
Outside 
(CO) Line
Outside (CO) Line
Extn.Extn.
Extn.: Extension Line Ground(Another Building)
Extn.
Extn. Surge Protector
Terminal
Board
Surge
ProtectorSLT
PT
 
PBX
Surge 
Protector
Outside 
(CO) Line
Grounding Wire
(Underground)
Ground Rod
PBX 
						

							2.2 Installing the Advanced Hybrid System
38 Installation Manual
2.Bury the ground rod near the protector. The grounding wire should be as short as possible.
3.The grounding wire should run straight to the ground rod. Do not run the wire around other 
objects.
4.Bury the ground rod at least 50 cm (20 in) underground.
Notes
 The above figures are recommendations only.
 The length of the ground rod and the required depth depend on the composition of the soil. 
						

							2.3 Installing Optional Service Cards
Installation Manual 39
2.3 Installing Optional Service Cards
2.3.1 Location of Optional Service Cards
Optional service cards are installed by opening the front covers of the main unit and affixing the cards 
to the appropriate connectors. Each card should be installed in the appropriate location as shown 
below.
See System Components Table for the description of each optional service card.
CAUTION
To protect the printed circuit boards (P-boards) from static electricity, do not touch parts on the 
P-boards in the main unit and on the optional service cards. If you must touch the P-boards, wear 
a grounding strap.
Note
Before installing optional service cards, turn off the PBX and unplug the AC cord.
Connector for KX-TA82491Connector for KX-TA82492 Connectors for KX-TA82483, 
KX-TA82481 or KX-TA82470
Connector for  
KX-TA82461
Connector for KX-TA82493 
						

							2.3 Installing Optional Service Cards
40 Installation Manual
2.3.2 3-Port Analog CO Line and 8-Port Hybrid Extension Card 
(KX-TA82483)
Function
Adds 3 outside (CO) lines and 8 hybrid extensions on the KX-TA824 basic system.
Installing KX-TA82483 to KX-TA824
1.Loosen the screws and open the top and bottom front covers. (→ 2.2.3 Opening/Closing Covers)
2.Using cutting pliers, cut the 6 parts marked with circles, and remove the upper front panel as 
shown below.
3.Cut off any excess plastic in order to make the surface smooth.
Lower Front Panel Upper Front Panel