3 Locate the Header Bracket Position
1
Close the door.
2 From inside the garage, use a pencil to mark the
vertical centerline of the door on the header wall and
on the top panel of the door.
3
Examine the area above the center of the door on the
door header wall for a header bracket mounting location.
4
Open the door to the high-rise point (the point where
the top edge of the door is highest above the floor)
and measure the distance to the floor.
5 Close the door and use a pencil to mark the header
wall 1” above the measured high-rise point.
NOTE:
In some installations, the header bracket
location will be higher than the door header. This will
require adding a 2x4 (or larger) cross piece to the wall
studs to provide a mounting location for the header
bracket. Use lag screws (not supplied) to attach the
2x4 to the studs.
6
On doors with low headroom, the header bracket
can be attached to the ceiling up to 6” back from the
header wall (see next step).
4 Install the Header Bracket
Attaching the Header Bracket to the Wall
1
Hold the header bracket on the center line drawn
above the door with the bottom edge of the bracket
on the line marked above the high-rise point.
2 Use a pencil to mark the two bracket holes.
3 Drill two 3/16” pilot holes about 2” deep.
4 Use a ½” socket to fasten the bracket with two
5/16” x 2” lag screws.
Attaching the Header Bracket to the Ceiling
NOTE:
On a finished ceiling, be sure there is a joist
to fasten to under the sheetrock where the header
bracket will be located (use a stud finder). If there
is none, install a 2x4 cross piece between the two
closest joists to fasten the header bracket onto.
1
Extend the center line drawn on the header wall
along the ceiling.
2
Hold the bracket on the center line with the edge of
the bracket no further than 6” from the header wall.
3 Use a pencil to mark the two bracket holes.
4 Drill two 3/16” pilot holes about 2” deep.
5 Use a ½” socket to fasten the bracket with two
5/16” x 2” lag screws.
5 Connect the Rail to the Header Bracket
1
Place assembled operator on the empty carton on the
floor with rail towards the door.
2 Insert the end of the rail into header bracket.
3 Insert the 5/16” x 2-3/8” clevis pin through header
bracket and rail.
4 Secure the clevis pin with the hitch pin.
6 Hang the Operator
Installation requirements vary with garage construction.
Hanging brackets should be angled to provide rigid
support. Hanging material is not provided. Angle iron
and lag screws are recommended. DO NOT USE NAILS.
Following are typical operator hanging methods. Certain
installations will require improvised methods.
1 Raise the operator head and set it on top of a
stepladder (use extra spacers on top of ladder if it
isn’t tall enough).
2 Carefully open the door to the full up position. Lay a
2x4 across the top section of the door as a spacer.
Adjust the operator height until the rail touches the
spacer. The rail should be close to level.
3 Center the operator head and rail with the centerline
mark on the top of the door.
4 For finished ceilings only: An angle iron cross piece
between the two closest joists above the operator will
be required. Mark mounting hole locations, drill pilot
holes and attach the piece with two lag screws (not
supplied).
5 Measure the distance from each of the operator’s
hanging tabs to the ceiling joists or angle iron cross
piece.
6 Cut two angle iron pieces to the required lengths for
hanging brackets. Bend brackets if required.
• For unfinished ceilings: Hold each bracket in place
and use a pencil to mark the locations where they will
be attached to the joists, drill pilot holes and attach
the pieces with two lag screws (not supplied).
• For finished ceilings with an angle iron cross piece:
Attach the two hanging brackets to the cross piece
with two bolts and two keps nuts (not supplied).
7 Attach operator to hanging brackets using two
5/16-18 x 1” hex bolts and two 5/16-18 keps nuts
(supplied). Insert bolts from the inside of hanger
brackets with the nuts on the outside of the operator.
Tighten nuts with a ½” socket.
8 Tighten all hanging hardware.
9 Open and close the door manually. The door should
clear the rail by at least 1”.
10 Attach the trolley’s release lever to the red release
handle with the cord supplied so the handle is at
least 6 feet from the floor. Cut off any excess cord.
Installation instructions
For Sectional Type Doors
IMPORTANT SAFETY NOTES
Please read the instructions carefully! This garage door
operator is designed to provide safe and reliable service
if installed and tested as described in these instructions.
A garage door is the largest mechanical appliance in a
residence. Care must be taken to prevent injury or death
during installation and operation of the garage door and
garage door operator.
1 Check the Door Balance
1
From outside the garage, slowly open the door all
the way, and then close it all the way. Notice if there
is any binding, sticking or rubbing. The door should
move smoothly in both directions.
2 Raise the garage door about halfway up. Carefully
release the door and see if the door balances. It
should stay in place. Close the door.
IMPORTANT:
If the garage door is unbalanced or
the door travel isn’t smooth, have a qualified garage
door professional adjust or repair the door.
THE DOOR SHOULD
BALANCE WITHOUT
GOING UP OR DOWN
CHECKING THE DOOR BALANCE
LINE UP THE RAIL OVER THE DRIVE SHAFT
ON TOP OF THE OPERATOR HEAD
ALIGNING THE RAIL
BE SURE THE FLAT ON THE SPROCKET
LINES UP WITH THE FLAT ON THE DRIVE SHAFT
CHAIN DRIVE
BELT DRIVE
TIGHTEN THE RAIL-TO-HEAD BOLTS IN THIS ORDER
1
2
3
4
INSTALL FOUR 1/4-20 x 3/4"
RAIL-TO-HEAD BOLTS
USING A 7/16" SOCKET
T
E
PULL THE CHAIN OR BEL
AWAY FROM THE RAIL TO
FIT THE SOCKET ON TH
FRONT BOLTS
ATTACHING THE RAIL
MATING THE SPROCKET AND SHAFT
TABS FIT INTO SLOTS
SLIDE THE SPROCKET
INTO THE SHAFT
CHAIN DRIVE
BELT DRIVE
MARK THE CENTERLINE
OF THE DOOR ON THE
HEADER AND THE TOP
DOOR PANEL
MARKING THE CENTERLINE
HIGH-RISE
POINT
MARK HEADER
1" ABOVE
DOOR
MARKING ABOVE THE HIGH-RISE POINT
CENTERLINE OF DOOR
1 INCH
HIGH-RISE POINT
OF DOOR
ATTACH HEADER
BRACKET WITH
TWO 5/16" x 2"
LAG SCREWS
1/2" SOCKET
ATTACHING THE HEADER BRACKET
DOOR
HEADER
WALL
NO MORE
THAN 6 INCHES
CENTERLINE OF DOOR
FOR LOW HEADROOM
DOOR INSTALLATIONS ONLY
ATTACHING THE HEADER BRACKET TO THE CEILING
INSERT HITCH PIN
INTO CLEVIS PIN
2-3/8" LONG
CLEVIS PIN
CONNECTING THE RAIL
PREPARING TO HANG THE OPERATOR
TYPICAL HANGING BRACKET
ASSEMBLY USING A CROSSPIECE
TYPICAL HANGING BRACKETS
SCREWED DIRECTLY TO JOISTS
HANGING BRACKET OPTIONS
Door
Place a 2x4 spacer
between the door and rail
HANG OPERATOR
WITH TWO 5/16-18 x 1"
BOLTS AND NUTS
HANGING THE OPERATOR
WARNING
This type of warning note is used to indicate
possible mechanical hazards that may cause
serious injuries or death.
CAUTION
This type of warning note is used to indicate
the possibility of damage to the garage door or
garage door operator.
WARNING
This type of warning note is used to indicate
possible electrical shock hazards that may cause
serious injuries or death.
THE FOLLOWING FORMATS ARE USED FOR SAFETY
NOTES IN THESE INSTRUCTIONS.
PRINTER’S INSTRUCTIONS:
INSTR,INSTL, LDCO852, ENGLISH; GTO PN: 10016927-A; INK: BLACK; MATERIAL: 20# MEAD BOND; SIZE: 17.000” x 22.000”; FOLDING: 2-FOLDS VERTICAL, 1-FOLD HORIZONTAL, FINISH 8.500” X 5.500” WITH LOGO SHOWING; SCALE: 1-1; SIDE 1 OF 2
Manufactured by:
GTO Access Systems, LLC
USA & Canada (844) 256-3130
www.gtoaccess.com
IMPORTANT INSTALLATION INSTRUCTIONS
WARNING
TO REDUCE THE RISK OF SEVERE INJURY OR DEATH TO PERSONS,
REVIEW THESE INSTALLATION SAFETY STEPS BEFORE PROCEEDING
1 READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.
2 Install only on a properly balanced sectional garage door. An improperly balanced door could result in severe
injury or death. Repairs to cables, spring assemblies, and other hardware must be made by a qualified service
person before installing the opener.
3 Disable all locks and remove all ropes connected to the garage door before installing the opener. Ropes con-
nected to a garage door can cause entanglement and death.
4 If possible, install door opener 7 feet or more above the floor with the manual release handle mounted 6 feet
above the floor.
5 Do not connect the opener to the power source until instructed to do so.
6 Locate the wall station or push button within sight of the door at a minimum height of 5 feet so that small
children cannot reach it. Locate the wall station or push button away from all moving parts of the door.
7 Install the User Safety Label on the wall adjacent to the wall station or push button.
8 Upon completion of the installation, the door must reverse when it comes in contact with a 1-1/2” high object
(or a 2x4 laid flat at the center of the door) on the floor and when the infrared safety beam is blocked.
9 Do not wear watches, rings or loose clothing while installing or servicing an opener. Jewelry or loose clothing
can be caught in the mechanism of the garage door or the opener.
10 DISCONNECT THE ELECTRIC POWER FROM THE GARAGE DOOR Opener BEFORE MAKING ANY REPAIRS OR
REMOVING THE COVER.
11 Disconnecting the Door from the Opener: With the door in any position (preferably closed), carefully pull the red
release handle. USE CAUTION IF THE DOOR IS OPEN. An open or partially open door may fall rapidly if discon-
nected from the opener. Do not allow anyone in the path of the door.
12 Use this operator only with sectional overhead doors no more than 10FT tall.
LDCO852
Smart WI-FI Garage Door Opener
DC motor with LED lighting and belt- or chain-drive rail
2 Attach the Rail to the Operator
1 Place the operator head on the garage floor with cardboard underneath it to protect the finish.
2 Align the rail over the center of the operator head.
3 Be sure the flat on the sprocket lines up with the flat on the drive shaft.
4 Slide the sprocket onto the shaft.
5 Attach the rail to the operator head by installing four ¼-20 x ¾” bolts.
6 Tighten the four bolts in the order shown with a 7/16” socket.
