Chamberlain LiftMaster 850LM Installation Manual

APPLICATION
The receiver can be used as a single or three channel receiver to
control up to 3 gates or commercial door operators. The receiver can
also be used with a 3-button remote control to operate the OPEN,
CLOSE, and STOP feature on a commercial door operator. The receiver
is not for use with MyQ™ enabled garage door openers or devices.
Each channel is compatible with a certain number of remote controls and
keypads. Refer to the list below:
• CH1: 50 remote controls and 2 keypads
• CH2: 20 remote controls and 2 keypads
• CH3: 20 remote controls and 2 keypads
When the channel has reached full capacity for remote controls, all LEDs
will blink 3 times. When the channel has reached full capacity for
keypads, all LEDs will blink 4 times. Additional accessories can be
programmed, however, the newly programmed accessory will replace the
first programmed accessory.
NOTE: The receiver will only allow you to program a button on the remote
control to one channel at a time. For example, if the button on the remote
control is already programmed to channel 1 and then is programmed to
channel 3, the button will be erased from channel 1 and will only work on
channel 3.
LEDs
INSTALLATION
The receiver and antenna use TV Type F coaxial connectors. The antenna
can be connected directly to the receiver or it can be installed remotely
using a coaxial cable extension kit (Model 86LM, 15 ft. or 86LMT, 25 ft.).
1 Select a location for the receiver which allows access to the terminals
and space for the antenna. Ensure antenna does not touch metal
surfaces. DO NOT bend or fold the antenna.
2 Fasten the receiver securely with the hook and loop fasteners
(provided) or screws (not provided).
3 After installation is complete, connect power. You may use 85LM
plug-in or 95LM wired-in transformer, or power provided from your
operator (9-30 V AC, 9-34 Vdc or see power ratings on next page).
NOTE: The receiver can command the operator to close the
door or gate by constant pressure. This feature is only available with a
wireless control panel (Model 885LM). To enable this feature, press
and hold the push bar until the gate or garage door moves to the
closed position.
CH3
CH1
CH2
3-CHANNEL UNIVERSAL RECEIVER
To prevent possible SERIOUS INJURY or DEATH from electrocution:
• Be sure power is NOT connected BEFORE installing the receiver.
To prevent possible SERIOUS INJURY or DEATH from a moving gate
or garage door:
• ALWAYS keep remote controls out of reach of children. NEVER
permit children to operate, or play with remote control transmitters.
• Activate gate or door ONLY when it can be seen clearly, is properly
adjusted, and there are no obstructions to door travel.
• ALWAYS keep gate or garage door in sight until completely closed.
NEVER permit anyone to cross path of moving gate or door.
To prevent possible SERIOUS INJURY or DEATH, the use of
CONSTANT OPERATION on residential openers is PROHIBITED.
When a receiver is used to activate a commercial door opener, a
reversing edge MUST be installed on the bottom of the door. Failure to
install a reversing edge under these circumstances may result in
SERIOUS INJURY or DEATH to persons trapped beneath the door.
WIRING
Refer to your commercial door operator or gate operator owner manual
or wiring diagrams for specific wiring information.
SINGLE CHANNEL
Receiver
THREE CHANNEL
Receiver
MODELS 850LM AND 850LMC
Single Operator(s)
Operator 3
Operator 2
Operator 1