MantelMount MM340 Installation Instructions

Before You Begin

Please read this entire manual before you begin. Do not unpack any contents until you verify all requirements on PAGE 4. If you have any questions, visit MantelMount.com or call (800)-897-9755.

Safety Warnings

⚠️ WARNING! This product contains small parts that can be a choking hazard. Do not let children play with any of these small parts! Keep children away from the work area during installation.

❗ CAUTION: This product is intended to be installed by professional installation contractors, or persons familiar with the tools and methods required for this installation. If you are not sure about your ability to perform this installation, you must contact a professional. MantelMount is not responsible for damage or injury caused by incorrect installation or improper use.

❗ CAUTION: Do not let children operate, pull on, or hang from MantelMount. Do not let children push MantelMount upward to the top position – this will cause the mount to slam against the wall due to the upward force of the springs. Only a person tall enough to control the mount all the way to the top should operate MantelMount.

❗ CAUTION: Do not use this product in any way, or for any purpose, that is not specifically described in these instructions. MantelMount is not responsible for damage or injury caused by incorrect installation or improper use.

Important Adjustments

MantelMount MM340 has three different adjustments that must be made after the installation is complete in order to operate properly:

• The main bolt adjusts the lifting force to accommodate different TV weights. All TVs within the weight range should stay in the UP and DOWN positions when adjusted properly.
• The bottom travel stop is adjusted with two screws and locknuts so the TV and mount do not lower all the way into the mantel.
• The side-to-side swivel stops are adjusted with two screws and locknuts so that the TV does not swivel into the mantel.

U.S. Pat. No. 8,864,092

Required Tools

Tools needed for installation include:

• 7/32" Drill Bit
• 4-5mm Wrench/Socket
• 10-14mm Wrench/Socket

Component Identification

Before you begin, please verify that all components are included and undamaged. If any parts are missing or damaged, contact MantelMount. Never proceed with missing or damaged parts! Lay out all components and make sure you identify that each one has a match in the diagram. Some of the parts included will not be used during installation. Do not proceed if you do not understand and identify all of the components.

Key components include:

• {31} x2 Vertical Brace
• {35} x1 Lifting Mechanism
• {32} x1 Wall Plate
• {30} x2 Vertical Brace
• {33} x1 TV Brace

Critical Installation Requirements

Please verify that your installation meets all of these CRITICAL requirements:

A. Fireplace & Heat Source

MantelMount is designed for use only with decorative fireplaces that are not the primary heat source for a house. Temperature at the front edge of the mantle should never exceed 110°F (43°C).

B. Wall Structure & Covering

The wall must be a WOOD STUD FRAME only. There must be at least 2 studs available for mounting. Wall covering (drywall) must not exceed 5/8 inch thick. For other types of walls or installations, please visit the FAQ section at MantelMount.com.

C. Mantle Extension

The mantle must not extend from the mounting surface more than 16 inches. MantelMount cannot extend past a mantle larger than 16 inches. Larger mantels will also reduce the amount of side-to-side swivel.

D. Television Requirements

1. Weight must be between 20 - 90 pounds.
2. Screen size larger than 44 diagonal inches.
3. Mounting screw holes must be VESA compliant. For non-VESA hole patterns, please visit the FAQ section at MantelMount.com.

VESA compatibility: Width: 200-700mm, Height: 100-500mm.

E. Overhead Space

The space above the mantle must be taller than the TV. The required space depends on how far out the mantle extends. Refer to the chart below and add this additional height to the TV height to determine if space is tall enough.

Installation Steps

Step 1: Determine TV Back Type

Use a Vertical Brace {31} to determine if your television has a flat back or an irregular back. An irregular back will require spacers and longer screws to fill any spaces between the Vertical Brace and the TV. The Braces must be parallel to your television screen.

Step 2: Select Correct Screws & Spacers

Choose the correct screw diameter and length for the TV. Hand-thread the screw combination into the TV to ensure adequate thread engagement without hitting the bottom of the threaded insert. Use only the minimum amount of spacers (if required). Ensure there is a gap of 7-10 threads minimum engagement in the TV insert.

❗ CAUTION: Do not use screws that are too long for the threaded inserts of the Television, as this can damage internal components.

Step 3: Possible Screw Combinations

Shown are possible screw combinations with maximum spacer usage if spacers are required for M5, M6, and M8 mounting points.

Step 4: Wall Plate Positioning Information

The Vertical Braces {31} are positioned 3 inches higher than the bottom of the Wall Plate {32}. This relationship helps calculate mounting for specific situations, like centering a TV in an alcove. Measure the distance from the bottom of your TV (or Sound Bar) to the bottom of the Vertical Braces {31} to know the distance from your TV to the Wall Plate {32}. This information is used to install the Wall Plate at the desired height.

Example: If Vertical Braces are 6 inches higher than the TV bottom, the Wall Plate will be 3 inches higher than the TV bottom upon completion.

If installing above a mantle, ensure additional clearance for downward motion as stated in the chart in Step 9.

Step 5: Mount Vertical Braces

The Vertical Braces {31} are always mounted higher than the bottom of the TV. The Brace Extenders {30} will be mounted so that their handles are slightly below the TV. Installing the Vertical Braces higher on the TV allows for more downward travel by providing clearance between the Lifting Mechanism {35} and the mantle.

Step 6: Attach Vertical Braces to TV

Attach the Vertical Braces {31} to the TV so their bottoms are at least a few inches higher than the bottom of the TV. Centering the TV is ideal. This positioning allows for greater downward travel.

Step 7: Attach Extenders

Attach the Extenders {30} using Screws {18} and Nuts {23}, ensuring the handles are within one inch from the bottom of the TV.

Step 8: Measure Vertical Brace to TV Distance

Measure the distance from the bottom of the Vertical Braces {31} (not the Extenders) to the bottom of the television (not the handles). Record this distance for use in Step 9.

Step 9: Determine Wall Plate Vertical Position

The vertical position of the Wall Plate {32} is determined by the mantle's extension, which can interfere with the TV's lowering arc. The MantelMount must be installed a minimum distance above the mantle. This distance is added to the measurement from Step 8. Use the chart below for additional height required above the mantle, which will be used in Step 12.

NOTE: If wall space above the mantle is limited (e.g., near a ceiling), use the exact dimensions from this chart. If ample space is available, these are minimum requirements.

Step 10: Accessing Lag Bolt Holes

There are four lag bolt holes in the Wall Frame that may be inaccessible with the Lifting Mechanism in the up position. If these holes are needed, temporarily install the mount using other holes, pull down the mechanism, and lock it with the Safety Bolt {20} and Safety Nut {27} (see Step 19). The mount can then be relocated to the correct area.

Step 11: Locate Studs and Mark Centerline

Measure the centerline of the mantle and mark it with tape on the wall. Locate at least two studs using a stud finder. Find the center of these studs by poking a sharp awl or finish nail through the drywall to locate each edge. Lag bolts must be installed into the CENTER of the studs.

Step 12: Align and Mark Wall Plate

Align the Wall Plate {32} to two studs above the mantle and position the height using the table in Step 9. Ensure the Wall Plate is level. The Wall Plate might not be centered on the mantle. Mark the center line of the mantle onto the Wall Plate. Mark the 4 spots for lag bolts directly onto the centers of the studs.

Step 13: Pre-drill Holes

Pre-drill the 4 holes with a 7/32" drill bit to a depth of 2.5 inches (65mm), including wall covering. Note: Wall covering (drywall) must not exceed 5/8" thickness.

Step 14: Attach Lifting Mechanism to Wall Plate

Align the center of the Lifting Mechanism {35} to the center mark on the Wall Plate {32}. Install 4 Bolts {14} through the back channels of the Wall Plate into the threaded holes of the Mechanism. Tighten securely. DO NOT damage or scratch the rods of the Gas Springs!

Step 15: Attach Wall Plate to Studs

Attach the Wall Plate {32} using Lag Bolts {17} and Washers {11} directly into the centers of the studs. ❗ CAUTION: Do not overtighten Lag Bolts {17}. Tighten only until the washers are firmly against the wall plate. Damage due to overtightening can cause property damage or injury.

Step 16: Install Cable Tie Anchors

Insert two Cable Tie Anchors {22} into the front holes in the Lower Arm of the Lifting Mechanism. Press firmly until flat.

Step 17: Route and Secure Cables

Attach cables using the included Cable Ties {24} so they are sideways to the Lower Arm, making a gentle loop. Cables should be long enough to accommodate the extension and swivel of MantelMount. Check all ranges of motion before tightening the Cable Ties. Ensure cables are not stressed or kinked and do not get pinched behind the tilting mechanism when the mount is raised.

Step 18: Install TV Brace

Install the TV Brace {33} to the Lifting Mechanism {35}. Level the TV Brace and tighten the 4 screws {15} and Locknuts {23}.

Step 19: Secure Lifting Mechanism (Two People Required)

Firmly pull down the bottom of the TV Brace until the Lifting Mechanism is in a horizontal position. DO NOT HIT THE MANTLE! The second person must insert the Safety Bolt {20} through the Safety Hole in the Wall Bracket and install the Safety Nut {27}. Slowly release the TV Brace. The Lifting Mechanism should stay at a horizontal position.

Step 20: Safety Bolt Warning

❗ WARNING: Do not put hands into the Lifting Mechanism without the Safety Bolt and Safety Nut installed. The power of the Lifting Mechanism can cause bodily injury!

Step 21: Pre-Set the Lifting Force

Turn the main bolt CLOCKWISE (while looking at the head of the bolt from underneath) to pull the Gas Springs DOWN for heavy TVs. Rotate the bolt counter-clockwise for less lifting force for lighter TVs. See the diagram below for a pre-set estimate for the Gas Springs. The lightest lifting force is at the top, and the heaviest is down just below the middle of the bolt threads. Adjust the bolt until the TV gently stays in the lowered position. Move the TV up and down within the range below the Safety Bolt. The TV should almost stay up against the Safety Bolt, but should be easily lowered to the Bottom Stop. DO NOT adjust all the way to the bottom; that position is only for removing the Gas Springs.

Estimated TV Weight Settings: 20 lbs, 45 lbs, 70 lbs, 90 lbs.

Step 22: Hang Television (Two People Required)

Carefully hang the Television onto the TV Brace, making sure that all four hooks on the Vertical Braces {31} engage the TV Brace. DO NOT allow the Television to drop far enough to cause the Lifting Mechanism {35} to hit the mantle. MantelMount comes pre-adjusted to reduce the possibility of contacting the mantle, but you should always be prepared to remove the television at this stage to make the proper correction. If the Lifting Mechanism {35} appears to be too close to the mantle, remove the television. Go to STEP 25 and make an adjustment to the Bottom Stop position. Repeat this process until the Lifting Mechanism is a safe distance from the mantle when the TV is installed.

Step 23: Center and Balance TV

Center the TV on the TV Frame and check it with a level. Carefully slide the TV sideways, if required, until it is balanced and horizontal, up to a MAXIMUM OF 2 INCHES left or right. The TV may need to be moved off-center if it has an unbalanced weight (typically older, heavier TVs). If the TV is visually too much off-center above the mantle, remove the TV and relocate the Wall Plate {32} an equal distance but in the opposite direction of the TV to compensate.

Step 24: Secure TV Brace to Vertical Braces

Install 4 Screws {15} through the TV Brace {33} and into the Vertical Braces {31}.

Adjusting for Travel Stops and Television Weight

Step 25: Adjusting the Bottom Stop Position

Loosen the Locknuts and adjust the Bottom Stop screws to the desired stopping position. There is one screw on each side of the Lifting Mechanism. Ensure both sides are balanced evenly so the TV is level in the DOWN position. Tighten both locknuts after the adjustments are made.

Step 26: Adjusting the Side Swivel Stop Positions

Loosen the Locknuts and adjust the Swivel Stop screws to the desired stopping positions, both left and right. Tighten both locknuts after the adjustments are made. If no swivel is desired, it may be necessary to remove the locknuts and re-attach them on the other side of the Swivel Bracket so that the Screws can be threaded out to their maximum length.

Step 27: Adjusting for Television Weight

With the Safety Bolt {20} in place, use a socket wrench with an extension to adjust the long bolt inside the Lifting Mechanism {35}. Turn the bolt clockwise to increase lifting force for heavy TVs, or counter-clockwise for lighter TVs. Adjust the bolt until the TV gently stays in the lowered position. Move the TV up and down within the range below the Safety Bolt. The TV should almost stay up against the Safety Bolt, but should be easily lowered to the Bottom Stop. (Reference Step 21.)

Final Performance Check

Step 28: Verify Proper Lifting Performance

MantelMount lifting force is designed to keep the TV securely in the up position while also allowing the TV to gently rest in the down position. The force is strongest in the UP position, neutral in the MID positions, and weakest in the Bottom position. Ensure the TV performs as expected.

❗ CAUTION: Never release the handle before it is fully upright. MantelMount is strongest in the top position, and allowing it to slam closed can damage televisions. Always control the lifting process.

Step 29: Remove and Store Safety Bolt

Remove the Safety Bolt {20} and Safety Nut {27}. Store these parts for future use, as they are needed to remove the TV at any time. ❗ CAUTION: Never allow children to play around or operate MantelMount. Property damage or personal injury can occur.

Parts List

Exclusive MantelMount Features

MantelMount offers several advanced features for enhanced functionality and user experience:

Auto-Stabilization

The pivot automatically balances the force of the Gas Springs, ensuring the mount stays level during operation.

Smooth Operation

Solid shafts ride inside steel bushings at each pivot point, providing long wear and smooth movement.

Adjustable Handles

Handles direct all pulling forces to the mount, eliminating the need to grab the TV itself.

Auto-Straightening

The mount automatically flattens the TV as it is raised to the upper position, preventing rotation into the wall.

Warranty and Support

Full Manufacturer Warranty: MantelMount will replace or repair any product or part that proves defective due to improper workmanship or material during the warranty period. Visit MantelMount.com for details.

This Installation Manual is available for download as a PDF document at MantelMount.com. The PDF version can be used to see larger images or to zoom in for much greater detail.

Customer Service: (800)-897-9755

U.S. Pat. No. 8,864,092