Control Wiring; Determine Wiring Type; Special Control Wiring; Mounting Instructions - Chamberlain GH Owner's Manual

DETERMINE WIRING TYPE

Refer to the wiring diagram located on the inside cover the
electrical box to determine the type of control wiring.
IMPORTANT NOTE: If your wiring diagram is missing, or you are
unsure of the wiring type for your operator, contact the customer
service department: 1-800-528-2806.
STANDARD C2 OR B2 WIRING
Standard operators are shipped from the factory with jumper set
for C2 wiring, which requires constant pressure on button to
close the door. If momentary contact on close direction is desired
(B2 wiring) you must include an entrapment protection device.
See close control jumper setting below.
CONSTANT PRESSURE ON CLOSE (C2 WIRING)
Red jumper wire was placed on terminal #2 in electrical
enclosure. The operator will require constant pressure on close
control in order to keep door moving in the close direction.
MOMENTARY CONTACT ON CLOSE (B2 WIRING)
Move red jumper wire from terminal #2 to terminal #3. The
operator will require only momentary contact to close the door.

SPECIAL CONTROL WIRING

If your operator was shipped from the factory with non-standard
control wiring or with optional accessories that require addition
instructions, refer to the wiring diagram(s) indicated in the special
control wiring data box. When a replacement wiring diagram is
present, wiring diagrams in this manual will not apply. Refer only
to the replacement wiring diagram for all connections.
RADIO CONTROLS
On all models with type B2 control wiring, a terminal bracket
marked R1 R2 R3 is located on the outside of the electrical
enclosure. All standard radio control receivers (single channel
residential type) may be mounted to this bracket. The operator
will then open a fully closed door, close a fully open door, and
reverse a closing door from the radio transmitter. However,
for complete door control from a transmitter, a commercial
three-channel radio set (with connections for Open/Close/Stop)
is recommended.
ADDITIONAL ACCESS CONTROL EQUIPMENT
Locate any additional access control equipment as desired (but
so that the door will be in clear sight of the person operating the
equipment), and connect to the terminal block in the electrical
enclosure as shown on the Field Wiring Connections diagram.
Any control with a normally (N.O.) isolated output contact may be
connected in parallel with the OPEN button. More than one device
may be connected in this manner. Use 16 gauge wire or larger for
all controls. Do not use the Control Circuit Transformer (24 Vac)
in the Operator to power any access control equipment other than
a standard residential type radio receiver.
EXTERNAL INTERLOCK SWITCH
The operator has a terminal connection for an external interlock
switch. This switch must be a normally closed (N.C.) two-wire
device with a contact rating of at least 3 amps at 24 Vac. When
such a switch is connected as shown on the Field Wiring
C O N T R O L W I R I N G
To prevent possible SERIOUS INJURY or DEATH, install
reversing sensors when the 3-button control station is out of
sight of the door or ANY other control (automatic or manual) is
used. Reversing devices are recommended for ALL installations.
Connections diagram, the control circuit will be disabled when the
switch is actuated, thereby preventing electrical operation of the
door from the control devices.

MOUNTING INSTRUCTIONS

1. Mount WARNING NOTICE beside or below the control station.
2. Mount MAINTENANCE ALERT label to either side of control
station.
3. Mount control station(s) within line of sight of door(s).
11
WARNING WARNING
CAUTION
SPECIAL CONTROL
WI
WIRING DIAGRAM
This Operator has
Contr ol Wiring.
SUPPLEMENTAL WIRING DIAGRAM(S)
Wiring
Type
REPLACEMENT WIRING DIAGRAM
Note: Supplemental Wiring Diagrams are
to be used in addition to 1742-1.
Replacement Wiring Diagram is to be used
in place of 1742-1
AVERTISSEMENT
Wiring Diagram Label on Inside
Wiring Diagram label on inside cover
Cover of Electrical Box of electrical box
ATTENTION
ADVERTENCIA
PRECAUCIÓN
Control
Station
Optional
Controls
4'
Approximate
OR IN THE AREA NEAR THE OPERATOR MUST
NOT BE PERFORMED UNTIL DISCONNECTING
THE ELECTRICAL POWER AND LOCKING-OUT
THE POWER VIA, THE MAIN DISCONNECT
SWITCH. UPON COMPLETION OF
MAINTENANCE THE AREA MUST BE CLEARED
AND SECURED, AT THAT TIME THE UNIT MAY
BE RETURNED TO SERVICE.