Chamberlain LiftMaster TAC1 Assembly instructions

Installation and Programming Manual
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The Chamberlain Group
845 Larch Ave.
Elmhurst, IL 60126-1196
www.liftmaster.com
TAC1
Telephone Entry System

2
TABLE OF CONTENTS
SPECIFICATIONS 3
Cable Requirements 3
Dimensions 3
Carton Inventory 3
INSTALLATION 4-11
Mount the Back Panel 4
Description of the Processor Board 4
Overview of Telco Wiring 5
Wiring the Unit With a Telco Line 6
Wiring the Unit Without a Telco Line 6
Wiring a Gate Operator (Normally Open) 7
Wiring an Auto-Call Sensor 7
Wiring a Gate Operator (Normally Open)
and a Door Strike Lock (Normally Open) 8
Wiring a Gate Operator (Normally Open)
and a Maglock (Normally Closed) 8
Wiring a Door Strike Lock (Normally Open) 9
Wiring a Maglock (Normally Closed) 9
Earth Ground Rod 10
Power Wiring 10
Plug the Transformer into the Outlet 11
Mount the Unit 11
Set the Unit Master Code 11
TESTING 12
Test the Gate/Door Relays 12
Test the Telephone Connections 12
PROGRAMMING 13-19
From the TAC1 Keypad 13
Code Setup 14
Code Operation 14
From the Telephone 15-16
Telephone Commands 16
Program a Pre-Installed Liftmaster Receiver 16
Quick Reference 17-18
TAC1 MASTER CODE 19
LIMITED WARRANTY 20

3
CABLE REQUIREMENTS
DIMENSIONS
CARTON INVENTORY
Power Supply: 12 Vac 20 VA or 16 Vdc 2.5A
Unit (unlocked) (1)
Key (1)
12 Volt AC 20 VA Plug-In UL Listed Power Transformer (1)
Manual (1)
8-3/4"
6"
3-3/4"
3/4"
1/4"
3"
3"
4-1/4"
2-3/4"
SPECIFICATIONS >> CABLE REQUIREMENTS, DIMENSIONS AND CARTON INVENTORY
Outdoor installations require shielded cable. Non-shielded cable can be used for indoor installations ONLY.
PROCESSOR BOARD WIRE TYPE RECOMMENDATIONS
From the power transformer at 120 Vac outlet 2 - Conductor Cable Shielded Only - See Power Wire Table Below
From the door strike, maglock or gate operator 2 - Conductor Cable See device specifications for wire size
From the strike power supply (if needed) 2 - Conductor Cable See device specifications for wire size
From the Earth ground to processor board 12 AWG copper wire,
PVC insulated
or
12 AWG copper wire,
uninsulated
Belden #9912
Belden #8011
Residence and Telco phone lines 24 AWG twisted
pair telephone wire
Shielded - Belden #9502
From the processor board 24 AWG twisted
pair telephone wire
Shielded - Belden #9502
Between processor boards on
multiple entrance installation
24 AWG twisted
pair telephone wire
Shielded - Belden #9502
POWER WIRE TABLE
NOTE: Chamberlain is not responsible for conflicts between the information listed in the above table and the requirements of local building
codes. The information is for suggested use only. Check local building codes before installation.
DISTANCE AC POWER WIRE SIZE
Under 30 feet 18 AWG
30 - 75 feet 18 AWG
75 - 150 feet 18 AWG
150 - 250 feet 16 AWG
250 - 500 feet 12 AWG

4
1
9
10
6
5
12
11 2
13
1Autocall Input: Connector for accessory device to trigger
home dialing.
2Power Connector: 12 Volt AC power input. 8Ground Wire: Wire must be connected to positive earth
ground. See Earth Ground Rod.
7Tamper Switch
5Phone Output: Telephone return connection to home or
office phones.
6Line Input: Telephone input connection from “Telco” service
provider.
4Relay 1 Output: Form “C” primary control relay.
12 Relay 1 (Primary) Output Status LED
13 Relay 2 (Secondary) Output Status LED
10 Voice Data Send Status LED
9Status LED
11 Power Status LED
8
Choose the mounting location for the unit. Remove the back panel from
the unit by pulling the top of the panel out of the unit. Mount the panel
to a solid surface or post (hardware not provided) with the top of the
panel up.
IMPORTANT NOTE: Both the back panel and TAC1 unit must be oriented
and mounted in the upright position as shown at right and on the
installation warning label. Failure to correctly mount the panel and unit
may cause damage to the board during installation.
Mounting
Surface Top of Back Panel
Bottom of Back Panel
INSTALLATION >> MOUNT THE BACK PANEL AND OVERVIEW OF THE PROCESSOR BOARD
DESCRIPTION OF THE PROCESSOR BOARD
MOUNT THE BACK PANEL
34
7
3Relay 2 Output: Form “C” secondary control relay.
NC NC
NO NO COM COM

5
Home Phone
Ring
(Not Provided)
Telco Entrance Box
Demarcation Point
Tip
Alarm System
Position
NOTES:
• The voltmeter measurement between the Tip and Ring should
be between 48 and 53 Vdc.
• Never run data wires and high voltage wires in the same
conduit. The high voltage wires may interfere with the data
wires and cause the system to malfunction.
• Reversed polarity will not damage the unit, however, some
telephones will not function properly.
Tip
Tip
Ring
Ring
Telco Entrance Box
Demarcation Point
(non fourni)
Emplacement du
système d’alarme
Telco
Alarm System
Position (Not Provided)
Home Phone
Many phone companies have updated their color standards due to
the use of Cat 5 cable for most phone line installs, and keep
residential and business installs in line with each other. In the new
standard, there is no green, red, black or yellow wires, they have
been replaced by white/blue, blue/white, white/orange, and
orange/white. If the wire is primarily orange with white stripes
then that color is orange/white. Refer to the table below. The NID
labels will most likely have the old coloring scheme on them, and
most telephone wiring components you can purchase will still
reflect the original colors.
NOTE: If the unit will be connected with an
alarm system, you must connect the telephone
line to the alarm system first in the series from
the Telco box. If the units are not connected in
this order, they will not operate properly.
Function Old Color Standard New Color Standard
Tip 1 Green White/Blue
Ring 1 Red Blue/White
Tip 2 Black White/Orange
Ring 2 Yellow Orange/White
INSTALLATION >> OVERVIEW OF TELCO WIRING
AUTOCALL
EXIT 2
COM
EXIT 1
HOUSE TELCO
Notes about wire connectors
(terminal blocks):
• Wire connectors can be
removed to simplify wiring.
• DO NOT overload wire
connectors. Use ONLY one
wire per hole.
Typical Telco Overview
Typical Telco Overview With The Unit

6
WIRING THE UNIT WITH A TELCO LINE
WIRING THE UNIT WITHOUT A TELCO LINE
Ring Ring
Tip
Ring
Tip Tip
Ring
Tip
Telco Entrance Box
Demarcation Point
Ringer Equivalence Number (REN) = 5
The unit can be a stand alone system that allows
communication between the unit and the resident’s phones.
PHONE LINE
TIP
RING
TIP
RING
Ring Ring Ring Ring
Tip
Telco Entrance Box
Demarcation Point
Telco
Tip Tip Tip
Ringer Equivalence Number (REN) = 5
INSTALLATION >> WIRING THE UNIT WITH A TELCO LINE AND
WIRING THE UNIT WITHOUT A TELCO LINE
Never run data wires and high voltage wires in the same conduit. The high voltage wires may interfere with the data wires
and cause the system to malfunction.

7
AUTO CALL
12
Loop Sensor
NO
(Normally Open)
Loop
Detector
WIRING A GATE OPERATOR (NORMALLY OPEN)
Primary Gate
Operator
(Strike Open Input)
RELAY 1RELAY 2
NO
(Normally Open)
COM
(Common)
The gate operator can be connected to Relay 1 or Relay 2. See the
Programming section for information about configuring Relays 1
and 2.
The Auto-Call feature will enable the unit to contact the resident
when a driveway sensor (or any device that provides a contact
closure) is activated.
WIRING AN AUTO-CALL SENSOR
INSTALLATION >> WIRING A GATE OPERATOR (NORMALLY OPEN) AND
WIRING AN AUTO-CALL SENSOR
AUTOCALL
EXIT 2
COM
EXIT 1
HOUSETELCO
Notes about wire connectors
(terminal blocks):
• Wire connectors can be
removed to simplify wiring.
• DO NOT overload wire
connectors. Use ONLY one
wire per hole.

8
Primary Gate Operator
(Strike Open Input)
COM
(Common)
NO
(Normally Open)
NOTE: For DC power
install a 1N4001 diode
or equivalent.
NOTE: For AC power install a
Siemens S10K30 MOV
(Metal Oxide Varistor) or equivalent.
AC or DC
Power
COM (Common)
NO (Normally Open)
NOTE: Do not use
the unit’s power supply
for the door strike.
Door Strike
RELAY 1RELAY 2
WIRING A GATE OPERATOR (NORMALLY OPEN) &
A DOOR STRIKE LOCK (NORMALLY OPEN)
WIRING A GATE OPERATOR (NORMALLY OPEN) &
A MAGLOCK (NORMALLY CLOSED)
The door strike can be connected to Relay 1 or Relay 2. See the
Programming section for information about configuring Relays 1
and 2.
AUTOCALL
EXIT 2
COM
EXIT 1
HOUSETELCO
Notes about wire connectors
(terminal blocks):
• Wire connectors can be
removed to simplify wiring.
• DO NOT overload wire
connectors. Use ONLY one
wire per hole.
INSTALLATION >> WIRING A GATE OPERATOR (NORMALLY OPEN) A DOOR STRIKE LOCK
(NORMALLY OPEN) AND WIRING A GATE OPERATOR (NORMALLY
OPEN) & A MAGLOCK (NORMALLY CLOSED)
NOTE: Install a 1N4001
diode or equivalent.
NOTE: Do not use
the unit’s power
supply for the maglock.
DC Power
Maglock
Primary Gate Operator
(Strike Open Input)
COM
(Common)
NO
(Normally Open)
RELAY 1RELAY 2
COM (Common)
NC (Normally Closed)
The maglock can be connected to Relay 1 or Relay 2. See the
Programming section for information about configuring Relays 1
and 2.

9
RELAY 1RELAY 2
NOTE: For DC power install a 1N4001
diode or equivalent.
AC or DC Power
COM (Common)
NO (Normally Open)
NOTE: Do not use the unit’s
power supply for the door strike.
Door Strike
NOTE: For AC power install a
Siemens S10K30 MOV
(Metal Oxide Varistor)
or equivalent.
WIRING A DOOR STRIKE LOCK (NORMALLY OPEN)
RELAY 1RELAY 2
NOTE: For DC power install
a 1N4001 diode or equivalent.
NOTE: Do not use the
unit’s power supply for the
maglock.
AC or DC
Power
Maglock
COM (Common)
NC (Normally Closed)
WIRING A MAGLOCK (NORMALLY CLOSED)
The door strike can be connected to Relay 1 or Relay 2. See the
Programming section for information about configuring Relays 1
and 2.
The maglock can be connected to Relay 1 or Relay 2. See the
Programming section for information about configuring Relays 1
and 2.
INSTALLATION >> WIRING A DOOR STRIKE LOCK (NORMALLY OPEN) AND
WIRING A MAGLOCK (NORMALLY CLOSED)
AUTOCALL
EXIT 2
COM
EXIT 1
HOUSETELCO
Notes about wire connectors
(terminal blocks):
• Wire connectors can be
removed to simplify wiring.
• DO NOT overload wire
connectors. Use ONLY one
wire per hole.

10
Ensure that the unit is grounded properly. The unit contains a
number of static sensitive components that can be damaged by
static discharge.
To AVOID damaging gas, power or other underground utility
lines, contact underground utility locating companies BEFORE
digging.
NOTES:
• Use a minimum of 12 gauge wire in most cases. The type and
length of the earth ground rods vary by region. Contact the
building inspector’s office in the municipality where you plan to
install the unit for correct grounding materials and installation
procedures.
• Do not ground the unit to a pedestal post (gooseneck) if one is
used.
EARTH GROUND ROD
Other Ground Sources within
12' of the unit
Green Ground Wire
Earth Ground
Rod
Ground to
Metallic Cold
Water Pipe
Ground to
Existing
Electrical
System
12 AWG Minimum
Electrical
Panel
12' Maximum
POWER
12
The TAC1
MUST be
grounded.
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Main
Room
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M a nu . 1 R m
Main D ept.
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u2Rm
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r
iA
r
e
noitidnoC
Conference
Room1
Conference
Rm 2, 3
Refer.
Bus 1, 2, 3
Conference
Room2
oC pm.
Ser ev 2
oCp
m.
Serve 1
12 Vac
Power (included)
Dedicated Outlet
Dedicated 10 Amp Minimum Circuit Breaker
TAC 1
NOTE: Chamberlain is not responsible for conflicts between the information listed in the above table and the requirements of local building
codes. The information is for suggested use only. Check local building codes before installation.
POWER WIRING
The 110 Vac outlet must be dedicated to the unit only. This outlet
should be wired back to its own 10 Amp minimum circuit
breaker. This will prevent two problems:
• Other equipment cannot introduce spikes, noise, surges, or
dips into the power circuit.
• The system’s operation will not be affected if any other
equipment develops a short circuit across the power line.
Connect the transformer into a 110 Vac outlet after all
connections have been made, any other type of outlet will cause
damage to the system.
POWER WIRE TABLE
DISTANCE AC POWER WIRE SIZE
Under 30 feet 18 AWG
30 - 75 feet 18 AWG
75 - 150 feet 18 AWG
150 - 250 feet 16 AWG
250 - 500 feet 12 AWG
INSTALLATION >> EARTH GROUND ROD AND POWER WIRING
1. Install the earth ground rod within 12 feet of the unit.
2. Attach a 12 AWG wire to the unit ground wire with a wing nut.