NOTICE: General Reference Only

The information provided in this article is for general reference purposes only and does not constitute project-specific guidance. SLD Technology products are engineered to order, and their installation must comply with all applicable codes, standards, and project-specific specifications. In all cases, the approved project documentation and requirements take precedence over any general information contained herein. For project-specific instructions, contact your SLD Project Manager or the SLD Support Team at: support@sldus.com.

Introduction

NOTICE: Training Available for Installers

SLD Technology offers a no-cost, instructor-led online training session for installation contactors. To learn more or to register for training, visit the Installation Contractor Training article in our Knowledge Base at www.sldus.com/support or contact the SLD Support Team at: support@sldus.com.

IMPORTANT NOTE: Product-Specific Manual

This installation manual is intended specifically for AirFRAME® ceiling systems. Other SLD products such as LEDiffuser®, uLED™, and AirFRAME-LT® (for example) each have their own installation manuals and procedures. Always refer to the correct manual for the specific product being installed. For assistance, contact your SLD Project Manager or the SLD Support Team at: support@sldus.com

Safety Precautions

1. Read All Instructions: Review this manual in full before beginning any installation or maintenance activities.
   
2. Required Training: All personnel must be trained on this equipment and applicable safety procedures prior to beginning work. 
3. Qualified Personnel: Installation and maintenance must be performed by trained and qualified professionals. To arrange training, [Click Here] or email support@sldus.com.
4. Lockout/Tagout (LOTO): De-energize and lock out all power sources before servicing or handling electrical components. Follow OSHA-compliant LOTO procedures (29 CFR 1910.147 or current applicable standard).
5. Electrical Testing: Use an appropriately rated voltage tester to verify all circuits are de-energized before performing any electrical work.
6. Tool Use and Inspection: Use only tools in good condition that are appropriate for the task. Inspect all tools before use and remove damaged or worn tools from service.
7. Personal Protective Equipment (PPE): Wear safety glasses, gloves, safety-toe boots, and any additional PPE required by task-specific hazards or the jobsite safety plan. 
   
8. Fall Protection: When working at height, use approved fall arrest systems in accordance with OSHA fall protection standards (29 CFR 1926 Subpart M or current applicable standard). Ensure all anchor points, harnesses, and connectors meet required ratings.
9. Secure Work Area: Establish and clearly mark an exclusion zone around the installation area to prevent unauthorized entry and protect personnel from overhead and operational hazards. Use barricades, warning signage, or spotters as needed. Enforce this zone throughout the duration of the work.
10. Material Handling: Stack and store materials in a stable, secure manner to prevent tipping, sliding, or collapse. Do not store materials in a way that obstructs walkways, access panels, emergency equipment or emergency exits.
11. Lifting Precautions:  Use only mechanical lifting equipment rated for the load; do not attempt to manually lift or support AirFRAME modules. When handling smaller components or preparing equipment for lifting, use proper body mechanics and ergonomics to avoid strain. When working at height, use appropriate fall protection and secure all materials. Always ensure the area below is clear of personnel before lifting, moving, or lowering equipment overhead. 
12. Lifting Equipment Ratings: Ensure all rigging, hoists, slings, and lifting equipment are rated for the load being lifted. Do not exceed the rated capacity of any lifting device or attachment.
13. Work Environment: Ensure the installation area is clean, dry, well-lit, and free of dust, debris, or other environmental hazards. Verify adequate ventilation and lighting are in place before beginning work.
14. Housekeeping: Maintain a clean and organized  work area. Immediately clean up spills and remove debris to prevent slip, trip, fall, and crush hazards.
15. Confined Space Awareness: Do not enter enclosed ceiling spaces or plenums unless authorized and trained. Follow OSHA-compliant confined space entry procedures, including ventilation and monitoring if required.
16. Emergency Procedures: Know the location of first aid kits, fire extinguishers, emergency exits, and all site-specific emergency protocols. Report all injuries, incidents, and near misses immediately in accordance with site policy.

WARNING: Failure to Follow Safety Precautions May Result in Serious Injury or Death

All installation and maintenance activities must comply with applicable OSHA, ANSI, and local safety regulations. Only qualified personnel should perform work on or around AirFRAME systems. Follow all instructions in this manual, and adhere to proper lockout/tagout procedures, personal protective equipment (PPE) requirements, lifting safety, and environmental controls. Improper handling or installation may result in electrical shock, falls, equipment damage, or hazardous exposures. Refer to project-specific safety plans and site protocols. For questions or clarification, contact your SLD Project Manager or the SLD Support Team at: support@sldus.com before proceeding.

System Description

1. AirFRAME (AF) airflow modules
2. Outboard (OB) equipment mounting modules
3. Rail Channel (RC) rail mounting modules
   
4. Hinged Damper-Diffuser (DD) assemblies
   

Installation Contractor Training

NOTICE: Qualified Installation Required

AirFRAME systems must be installed only by contractors trained and authorized by SLD Technology, Inc. Due to custom configurations and project-specific requirements; installation procedures may vary between jobs. Contractors are strongly advised to schedule a training session with SLD Technology prior to shipment. Failure to complete proper training may result in improper installation, project delays, or safety hazards. To arrange training, schedule through the online portal at www.sldus.com/support or contact the SLD Support Team at: support@sldus.com.

Installation Contractor Training:

https://support.sldus.com/portal/en/kb/articles/installation-contractor-training

Supply, Install, and Connect (SIC) Responsibility Matrix

Table 1: SIC Matrix

NOTICE: SIC Matrix - Typical Flow

The actual flow for your job or project may vary based on the region, requirements of the job, or other factors. Contact your SLD Project Manager or the SLD Support Team at: support@sldus.com.

General Information

WARNING: Lifting, Pressurization, and Electrical Hazards

Installing and servicing the AirFRAME® modular fully-integrated OR ceiling system may involve lifting, system pressure, and electrical hazards. Only trained and qualified personnel experienced in the installation of similar systems should install or service AirFRAME equipment. Click Here for Training Information or contact support@sldus.com. 

WARNING: Electrical Shock Hazard

Before connecting the AirFRAME® system to power or servicing any electrical components, always turn off and lock out all power sources in accordance with OSHA-compliant Lockout/Tagout procedures. There may be multiple disconnect switches. Failure to de-energize and secure all power sources may result in serious injury or death from electrical shock.

NOTICE: Code Compliance Required

AirFRAME systems must be installed in accordance with: National Fire Protection Association (NFPA) standards, the National Electrical Code (NEC) and all applicable local building and electrical codes. Consult the authority having jurisdiction (AHJ) prior to installation to ensure compliance with local regulations.

INSTALLER TIP: Handle Long-Lead Items with Care

The hinged Damper-Diffuser (DD) assemblies and HEPA filters are expensive, long-lead components. Store these parts in a clean, secure location and handle with care to avoid damage or installation delays.

Tools and Equipment Needed for Offloading Truck

1. Forklift or Telehandler with long forks or fork extensions (≥6 feet)
   
2. Impact gun, drill or driver with #2 Phillips bit

Tools and Equipment Needed for Moving Modules

1. Forklift or Telehandler to move Modules off of shipping pallet to Staging Blocks or Moving/Furniture dollies (heavy duty recommended).
   
2. Moving Dollies
1. Standard Furniture Dollies
   

Sufficient for one-time or minimal use

INSTALLER TIP: AirFRAME® modules weigh 300-1800lbs; standard dollies may wear out quickly due to bearing stress.

Figure 1: Standard Moving Dolly

1. Heavy Duty Dollies
   

Recommended for repeated use.

These are used in our factory: Uline Plastic Dolly H-1811

Figure 2: Heavy Duty Moving Dolly

1. Low Profile Heavy Duty Dollies
   

Highly recommended for larger projects or repeat installations.

Available from Home Depot: Vestil LFH-55 Low Profile Dolly

Figure 3: Low Profile Heavy Duty Moving Dolly

Figure 4: AirFRAME® module on Low Profile Heavy Duty Moving Dolly

1. 2x4 and 4x4 wood blocks (can use blocks off shipping pallets)
   

Figure 5: AirFRAME® modules on shipping pallet

Figure 6: AirFRAME® modules on blocks

1. Pallet Jack
   

Figure 7: Shipping pallet on pallet jack

Tools and Equipment Needed for Installation

1. Material Lifts (minimum 2 required. Modules weigh 300-1800lbs each. For verified module weights, reference the project submittal, contact your SLD Project Manager or email support@sldus.com)
   

Figure 8: Material Lifts

2. Chain Hoists (2 recommended, 1 minimum)
   
3. Ladders
   
1. 4 total recommended: mix of 8 ft and 10ft ladders
   
2. At least one 10 ft ladder is recommended
   
4. Plastic sheeting and vinal tape (for protecting unit once initial install is complete)
   
5. Self-leveling Laser Level (for verifying hanging height)
   
6. Hand Tools:
   
1. Spirit or Digital Level (>3ft recommended)
   
2. Sockets and Wrenches (SLD Ship Loose Hardware is Imperial)
   
3. Wrench 15/16" for 5/8" suspension hardware (ratcheting/speed wrench recommended)
   
4. Impact gun, drill, driver
   
1. 3/4" socket for 1/2" module-to-module hardware
   
2. #2 Phillips driver bit for self-tapping screws
   
3. 5/16" driver bit for self-tapping screws
5. Wrench 3/4" for 1/2" module-to-module hardware
6. Tape Measure (calibrated)
   
7. Drift Pin (for module-to-module alignment)
   
8. Utility Knife
   
9. Pry Bar
   
10. Rubber Mallet
    
11. Rivet Gun (for 1/8" rivets)
    
12. Caulking Gun
    
13. Wire cutters/stripers
    
14. Torque Wrench with lower limit of at least 23ft-lbs [31.18 newton-meters] (for rooms with Imbedded Unistrut only)
    

Figure 9: Tools needed

INSTALLER TIP: Helpful Tool Suggestions

3-in-1, hammer, spud wrench, and drift pin in one:

Ratcheting/speed Wrench 15/16" for 5/8" hardware

Figure 10: Doorway conflict example

Suspension Point Locations

Before lifting any modules, verify that the suspension point hangers, typically 5/8" All-Thread Rod (ATR), are placed and secured correctly in the room according to the project-specific Structural Calculations, interstitial framing design as well as the suspension point page of the ship loose drawings. All rods must be in place and secured to the structure before lifting modules.

NOTICE: Always Verify Orientation

"Plan North" does not always match "True North" on a compass.

INSTALLER TIP: Pre-thread a top nut and fender washer onto each rod. Tape the washer to the nut to keep it in place during lift-in.

Figure 11: Whole room prepared hanging rods

Figure 12: Prepared hanging rods

ALERT: Anchoring and Bracing Responsibility

Materials and design for anchoring and lateral bracing are not typically within SLD Technology's scope, by others. Refer to the Structural Engineer of Record SEOR for framing, anchorage and bracing requirements.
For assistance, contact SLD Support at: support@sldus.com

Ceiling Height Verification

The AirFRAME suspension elevation is CRITICAL — especially in Hybrid ORs where ceiling-mounted imaging systems are involved. Some manufacturers (Phillips, Siemens, Canon, etc.) allow less than 4-6mm of height tolerance.

REQUIRED: Verify Finished Ceiling Height

Ceiling height must be verified and clearly marked (scribed) in the room. Coordinate with the GC, Architect, and Engineer prior to AirFRAME installation. This scribe point is by others and not within SLD Technology's scope.

IMPORTANT NOTE: Measuring from Concrete Floor Unreliable

Measuring from the concrete floor at installation can lead to issues with ceiling height in the future. Concrete floors during construction are usually not level and the finished floor can add inches in height. Remember to take into account the finished floor thickness.

INSTALLER TIP: Laser Level Usage

Use a self-leveling laser level (ensure it is not in locked/manual mode) to measure ceiling height.

1.       Place the laser level at the final ceiling height, or
   
2.       Set the laser at a known distance below the target height and use a tape measure to measure upward. 
   

General Operating Rooms (Standard Rooms)

In rooms without ceiling-mounted equipment supported by Air-FRAME, the ceiling height is the line between where the aluminum lighting grid meets the lighting lens:

Figure 13: AirFRAME® module hanging with laser

Figure 14: Close view of finished ceiling reference on AirFRAME® module

Hybrid Operating Rooms (Ceiling-Mounted Imaging Equipment Rooms)

In rooms with ceiling-mounted equipment supported by AirFRAME, the elevation is tied to the position of the Unistrut Embeds that support the ceiling mounted imaging equipment. 

ALERT: Tolerance Is Critical

Imaging equipment manufacturers typically require precise distances from the top of the table floorplate to the bottom of the Unistrut embeds. If the AirFRAME is mounted too low, the Unistrut cannot be adjusted upwards more than 0.5mm (by removing pre-installed shim).

It is better to hang slightly high than too low.

Once the imaging equipment manufacturer's representative comes to verify Unistrut height, the hard-lid ceiling and flooring is typically installed so it can be VERY expensive to raise the whole AirFRAME system or grind the floor and re-install the table plate at that point.

AirFRAME Unistrut Embeds are adjustable in height for small adjustments. Systems ship with a 0.5mm shim pre-installed and extra 0.5 and 1mm shims are sent "loose" for field adjustments. Unistrut Embeds can be shimmed downwards by inserting shims but can only be adjusted upwards 0.5mm by removing a single shim. Therefore, it is better to err on hanging too high rather than too low.

Figure 15: Measuring Unistrut height on AirFRAME®

Click Here for More Information on Unistrut Embeds

Receiving, Inspection, and Storage

Most projects involve multiple ORs with multiple AirFRAME modules per room. Therefore, it is important to keep units wrapped until they are ready to be moved into the OR where they will be installed. The tag numbers on the wrapping provide the most expedient way to identify module groupings by OR, so it can be helpful to group modules by room before beginning to move or unwrap them.

Click Here for Receiving, Inspection and Storage Information

Moving Modules

ALERT: Center of Gravity and Safe Handling:

When lifting and moving modules, ensure the module is centered and stable on forks before moving.

Move slowly and deliberately to prevent tipping or shifting.

Keep the area clear of personnel during lifting and movement to avoid injury in case of unexpected module shift.

Preparing Modules for Movement

1. Place shipping pallet on flat, even surface
   
2. Remove stabilizing lumber
   
1. Unscrew and discard any blocking or bracing attached to the pallet
   
1. Most screws use a #2 Philips bit (bit not provided)
   
2. If a T20 Torx bit is required, SLD provides it. It is usually stapled to the Bill of Lading (BOL) paperwork or attached to the boat wrap on the module and labeled as such.
   

Figure 16: BOL containing T20 bit stapled to paperwork

WARNING: Banding Release Hazard

When cutting banding, components can shift unexpectedly. Keep all personnel clear of the immediate area in case modules move.

Figure 17: AirFRAME® module on telehandler in loading dock

INSTALLER TIP: Fork Protection

If boat wrap is removed or if placing modules directly onto forks, protect the metal surface with foam, carpet, sheeting or other material to minimize metal-on-metal contact that may scratch or damage the powder-coated finish.

Moving with Dollies

Once on moving dollies, modules may be wheeled to the work area. For heavier modules, use straps to secure the module to the dolly to prevent the unit from slipping during transport.

Figure 18: AirFRAME® module on moving dolly without straps

Figure 19: AirFRAME® module on moving dolly with straps

Alternatively, you can place the whole shipping pallet on dollies and move the whole pallet into the workspace if space allows.

Figure 20: AirFRAME® module on shipping pallet in room

Unwrapping Modules

AirFRAME® modules are meticulously cleaned at the factory, packed with desiccant to prevent moisture intrusion, then double-wrapped in plastic, and sealed with boat wrap.

ALERT: Environmental Control During Unwrapping Required

DO NOT unwrap AirFRAME® modules in dirty, dusty or wet environments. Modules must be unwrapped only in a clean, dry area to prevent contamination or damage.

1. Taking care not to scratch the powder-coated finish, use a utility knife (a hook-blade is ideal) or similar to cut the wrapping along the top and side edges of the module.
   
2. Fold the wrapping down and away on both sides of the unit.
   
3. Cut wrapping along the bottom edge to remove the excess wrapping.
   
1. This will leave a small patch of wrapping that the module is sitting on. This can be removed once the module is lifted or tipped.
   

Figure 21: AirFRAME® module partially unwrapped

WARNING: Personal Injury and Equipment Damage Hazard

Use extreme caution when removing protective wrapping. 

Improper handling can result in:

1. Personal Injury (e.g., cuts from tools, slip/trip hazards caused by loose plastic)
   
2. Damage to the powder-coated finish, which may compromise the integrity of the metal frame
   

Dispose of plastic wrapping and debris promptly and properly as you work. Do not allow packaging materials to accumulate in the work area.

Remember: AirFRAME® is medical-grade equipment. It must arrive clean, unmarred, and sterile-ready to ensure the safety of surgical patients below.

Hanging Modules

WARNING: Use Only Properly Rated Lifting Equipment

Before lifting, verify that all hoists, slings, rigging, and lifting devices are rated to support the full weight of the load.

Failure to confirm lifting capacity may result in serious injury, death, or significant property damage.

It is the responsibility of the installer to ensure compliance with all applicable OSHA and ANSI standards for safe lifting and rigging practices.

For verified module weights, reference the project submittal, contact your SLD Project Manager or email support@sldus.com.

WARNING: Verify Suspension Hardware Load Ratings

Before installation, confirm that all suspension hardware, including rods, anchors, washers, and nuts, is rated to support the full weight of the AirFRAME® system with the required safety factor.

Failure to verify load ratings may result in structural failure, serious injury, or death.

Follow all applicable OSHA and ANSI standards for overhead lifting and support systems.

Protect Material Lift Forks

Unprotected material lift forks will damage the finish face of the AirFRAME module. To prevent scratches, gouges or other surface damage, cover the forks with foam, carpet, sheeting, or other protective material. Foam sheets shipped between AirFRAME modules can be reused for fork protection (see Figure 22). Additionally, inspect for bolts, nuts, flanges, lips, or other protrusions that may extend into the space of adjacent modules. These obstructions can cause scratching, denting, or alignment issues during installation. (Refer to Figure 23 for an example of potential interference and resulting damage).

Figure 22: Material lift with foam on forks

Figure 23: Material lift protrusion clash with resulting damage to adjacent module

INSTALLER TIP: Fork Protection

Use a full standard pallet on each material lift with SLD packing foam on top to provide a large, even surface for modules to sit on (See Figure 28).

Attach foam to a long 2x4 between forks and module (See Figure 33).

Positioning Chain Hoists

Before manipulating modules, install two chain hoists in the ceiling, spaced at or slightly wider than the width of the largest module. Position chain hoists off to the side of the room or otherwise outside the central work area to avoid obstructing the lift-in path. When possible, perform all module manipulation in a single location to minimize time spent relocating hoists.

Acceptable mounting methods for chain hoists include:

1. Beam clamps attached to structural beam or steel
   
2. Lifting straps securely wrapped around a structural beam or steel
   
3. Eye bolts connected to a turnbuckle, which is then secured to a suspension rod
   

Figure 24: Chain hoist secured to beam with strap

Figure 25: Chain hoist secured to beam clamp

CAUTION: Unbalanced Load Risk When Using a Single Hoist

A single properly-rated chain hoist can be used. However, when using only one hoist, modules will be less balanced during rotation and may quickly drop or "fall" into the flat position. Use extreme caution to control movement and prevent injury or equipment damage.

Rotating Modules

AirFRAME® modules are shipped in a knife-edge orientation and must be rotated to a flat orientation before placement on a material lift.

SLD provides loose 5/8" eyebolts for most modules and/or manufactured lifting lugs for heavier modules.

Eyebolts are the most common solution; lifting lugs are supplied only when the module’s weight exceeds the safe working load of the eyebolts (rare).

      Recommended Method

1. Install lifting points

      Install eyebolts or lifting lugs into the suspension points on opposite corners of the module.

Figure 26: Lifting point locations on AirFRAME module

2. Attach lifting equipment 

      Connect a chain hoist to each eyebolt or lifting lug.

3. Rotate the module

      Operate both chain hoists slowly, raising the lower end faster to bring the module into a flat position.

      Assign one installer to guide and stabilize the module during rotation.

Figure 27: Rotating a module on chain hoists

4. Transfer to material lifts

      Once the module is flat, position material lifts beneath it.

      Raise the lifts until they take the full weight of the module from the chain hoists.

5. Remove chain hoists

      Detach both hoists from the lifting points.

6. Position for installation

      Move the module on the material lifts to the exact location beneath the installation point.

Figure 28: AirFRAME® module on material lifts

Alternate Methods

ALERT: Avoid Pressure on Module Edges

The following methods are less desirable because they place pressure on the lighting grid or air delivery frames.

This pressure can result in damage to these components.

Figure 29: Rotating module with single hoist onto material lifts

Figure 30: Rotating module with material lift hoist attachment

Figure 31: Rotating module using straps through vertical uprights in module

Figure 32: Rotating module down onto floor, then picking up to place on material lift

Lift Into Place

1. Raise the module

      Using properly rated material lifts, raise the module evenly.

      Continue lifting until the module is aligned with the suspension rods.

2. Prepare the suspension rods

      Ensure a top nut is threaded onto each rod above the point where the top of the AirFRAME® will land.

      Guide each suspension rod through a fender washer and into the suspension holes as the unit is raised.

INSTALLER TIP: A fender washer can be temporarily taped to the pre-installed top nut and lowered into position later to simplify alignment.

Figure 33: Module being installed

3. Secure the module

      Once each rod is through its corresponding suspension hole:

1. Install the SLD-supplied plate washer
2. Add a fender washer
   
3. Thread a nut to secure the AirFRAME to the rod
   
4. Optional: Thread a second nut on to act as a jam nut 

Figure 34: Proper hardware stack

Figure 35: Lower hardware with optional jam nut

4. Adjacent Modules

      When hanging adjacent modules, take care not to pinch, cut, crush, or otherwise damage the module-to-module wiring.

      Tuck the wiring into the lighting grid so it can be accessed and connected later.

      See Module-to-Module Connections section for further details.

5. Final leveling

      If possible, leave the top nuts slightly loose until the entire system is level.

      Once leveling is complete, tighten all top nuts to lock the module in place.

ALERT: Suspension Hardware Requirements

Refer to the project-specific Structural Calculations, interstitial framing design as well as the suspension point page of the ship loose drawings for the correct suspension hardware type, size and installation method.

Using incorrect hardware may result in structural failure or non-compliance with engineering specification.

INSTALLER TIP: All-Thread Rod Preparation

Feeding suspension rods through the module's suspension holes is easier if each all-thread rod drop is cut to a slightly different length

This staggered length approach prevents the need to align and feen all rods simultaneously, reducing the risk of binding or misalignment during installation.

Figure 36: Staggered ATR cut lengths

Videos

IMPORTANT NOTICE: Linked Video Disclaimer

Linked videos are provided for reference only and are intended to supplement this installation manual.

They do not replace the written instructions, safety requirements, or project-specific documentation.

Always follow the procedures, specifications, and safety standards outlined in this manual and in the project’s approved documentation.

Standard Rooms

1. Level the first module

      Begin installation with one module.

      Verify that it is level and aligned to the finished ceiling plane as defined in the project-specific drawings.

      If the module is not level, adjust the lower suspension nuts of the module until level and at correct elevation on all sides. 

2. Monitor dimensions during installation

      Continuously check each installed module against the overall SLD dimensions to ensure compliance with project specifications.

3. Final securement

      When the entire system is fully level and dimensionally correct with module-to-module bolts installed:

1. Tighten all nuts securing modules in place to prevent movement. (See Module-to-Module Connections section for important considerations)
   
2. Trim all-thread rod if required.

Rooms with Embedded Unistrut

Click Here For Leveling Rooms with Embedded Unistrut

Lighting System Connections

Connection Methods

1. Connection While Hanging:

1. With modules suspended from their all-thread rods before bolted together, separate them enough to access the wiring.
   
2. Make the quick-connect wiring connections making sure the wires are seated into the connector securely and the connectors make a solid connection with each-other.
   
3. Carefully allow the modules to move back into place, ensuring no wires or connectors are pinched between them.
   

Figure 37: Module-to-Module wiring between modules

2. Connection from Lens Access

1. Remove the lighting lens by prying it down from the edges.
   
2. Remove the plastic retaining clip by pressing up and inwards on the tab.
   
3. Pull the lighting strut down to expose the connection point behind the lighting strut.
   
4. Make the quick-connect wiring connection.
   
5. Replace the components in reverse order.
   

Figure 38: Lighting assembly removal

Bolted Connections

SLD supplies all hardware required for module-to-module bolted connections. Standard connections typically use 1/2" hardware, but sizes may vary. Refer to the project-specific ship loose drawings for the exact hardware quantities and sizes for your project.

Each bolting location includes:

1. 1 bolt
   
2. 1 washer (placed on the bolt-head side)
   
3. 1 locking flange nut
   

Bolt lengths are provided as follows:

1. 5" long bolts - For connecting 2" thick internal tubes to 2" thick internal tubes
   
2. 4" long bolts - For connecting 1" thick internal tubes to 2" thick internal tubes
   

INSTALLER TIP: Leave Hardware Loose for Alignment

When hanging modules, install the hardware but only thread the nut on a few turns onto the bolt. This will make it easier to align additional modules. Tighten all hardware only after all modules are installed and the system is fully level.

ALERT: Tightening Requirement - "Snug-tight"

All module-to-module bolts must be tightened to Snug-tight in accordance with RCSC 2020, Section 8.1 (or the most current revision).
Definition:

"Snug-tight is the condition that exists when all of the plies in a connection have been pulled into firm contact by the bolts in the joint and all of the bolts in the joint have been tightened sufficiently to prevent the removal of the nuts without the use of a wrench." -- RCSC 2020, Section 8.1

Failure to meet this requirement may result in joint loosening, structural instability, or equipment damage.

Figure 39: Module-to-module rivets

Priming:

1. Apply an approved primer — Dow Corning OS 1200 Primer — to all surfaces that will be caulked.
2. Follow manufacturer instructions for required cure time before applying caulk.
   

Caulking Seams

1. Use only SLD-supplied DOWSIL 732 Multi-Purpose White (300 mL) caulk.
2. Apply a continuous bead along all internal seams.
3. Tool the bead immediately after application using a gloved finger or smoothing tool, pressing the bead firmly into the seam to achieve a complete seal.
4. The tube seams must be completely continuous — this seal is the final barrier to the sterile field.
   

Caulking Bolt Locations

1. Caulk all bolt locations and structural plate washers, ensuring a full 360° seal.
   
2. Caulk around all screw tips using SLD-supplied screw tip covers (See Module Penetration Protection section).
   

Curing

1. Allow the caulk to cure for 24 hours.
   
2. At 24 hours, the caulk should be cured to a depth of approximately 3mm.
   

Inspect all Caulking

1. After curing, inspect all seams, penetrations, and hardware for any missed, broken, incomplete or thin caulk lines.
   
2. Re-caulk any deficient areas using SLD-supplied caulk.
   
3. Confirm all joints are sealed with a complete, unbroken bead.

Figure 40: Caulked module-to-module bolt

Figure 41: Caulked suspension bolt and washer

Figure 42: Screw tip covers

Figure 43: Caulked screw tip cover

Important Note: Seal Unused Holes

Any unused pre-drilled holes that go through into the air path should be sealed (with a screw or cover)

Corner Cap / Split Cover Installation

Figure 44: Installed corner cap

NOTE: Parts Being Phased Out

Corner caps and split covers are being phased out but may still be included on some projects. Aways check the ship loose drawings for project-specific details.

ALERT: Sealing Required

Every corner cap and split cover must be sealed to prevent air leakage to or from the interstitial space.

Installation Procedure

1. Apply Caulk Seal

      Apply a continuous bead of SLD-supplied caulk to the back side of the cap or cover

      The bead must pass completely around the outside of the screw holes and finish where it started with no gaps in the seal

2. Position the Cap/Cover

      Align the cap/cover with the AirFRAME® sidewall

      Press the cap/cover into place, ensuring the caulk bead remains intact and unbroken.

3. Secure with Self-Tapping Screws

      Using the provided self-tapping hex-head screws, fasten the cap/cover through the pre-punched screw holes.

4. Protect Exposed Screw Tips

      On the inside of the AirFRAME®, cap all exposed screw tips (see Module Penetration Protection section for details).

5. Final Seal Inspection

      Verify that the caulk seal between the cap/cover and the AirFRAME® sidewall is continuous

      Fill any voids or gaps with caulk to ensure a fully sealed joint.

Perimeter Angle Installation

Click Here For Perimeter Angle Installation instructions

Lens Logo Installation

Click Here For Lens Logo Installation Instructions

Insulation

Click Here For Insulation Information

HVAC Blowdown

SLD Technology recommends performing a 24-48 hour “blowdown” of the HVAC system to be performed after "dirty" work in the room is complete and before final cleaning, Damper-Diffuser door installation or HEPA filter installation. This helps remove dust and construction debris from the ductwork and prevents contamination of the diffusers and filters.

If Damper-Diffuser doors have already been installed, open them and let them hang down while this blowdown is performed.

Cleaning

Vacuum and clean the grid, inside of the air delivery can, Damper-Diffuser doors, and screens of all foreign objects and debris.

Wipe down all inside surfaces (excluding lighting lens) with IPA wipes.

IMPORTANT NOTICE: Light Lens Cleaning

Clean light lens material only with 100% deionized water. Do not use alcohol, ammonia-based cleaners, or any other cleaning agents. These can cause immediate and irreparable damage to the lens material.

Handling and Preparation

1. Keep DD doors in their crate and protected until installation.
   
2. DD doors are long-lead items and expensive to replace individually.
   
3. Handle carefully to avoid bending or damage to the diffuser screen.
   
4. Install using two people.

Installation Procedure

1. Locate Components

      Find the DD rivets (#45BRAW) and the hinged DD door assembly.

2. Align Hinges

      On the hinge for each DD door, locate the set of rivet holes.

      Align these holes with the corresponding holes in the DD frame around the vent opening.

      These holes are only located on one side, so the DD door can only be installed in the correct orientation.

3. Rivet Hinges in Place

      Using a manual, pneumatic or electric rivet gun, secure the DD door hinge to the frame with the DD rivets.

      Ensure each rivet makes a solid connection and that the hinge remains flush against the lower side of the frame.

Figure 45: DD door installation

4. Preload the DD Door

      Fully open the DD door and let it hang downward.

      Gently apply pressure to bend the diffuser screen backwards to create a slight arc in its frame. See Figure 46.

      This step compensates for settling during shipment and prevents sagging.

      ⚠️ CAUTION: Do not apply excessive pressure—DD screens are easily damaged.

5. Close and Lock the DD Door

      Close the DD door and engage all cam locks to secure it in place.

      Verify that the diffuser screen sits flush against the frame.

6. Adjust if Necessary

      If there is a noticeable gap, repeat steps 4 and 5 until a proper seal is achieved.

Figure 46: Damper-Diffuser door preloading

IMPORTANT NOTICE: Linked Video Disclaimer

Linked videos are provided for reference only and are intended to supplement this installation manual.

They do not replace the written instructions, safety requirements, or project-specific documentation.

Always follow the procedures, specifications, and safety standards outlined in this manual and in the project’s approved documentation.

Electrical Systems

Click on the following for information on your lighting package:

Standard LED Lighting Basics

Visible Light Disinfection (VLD) Basics

VLD Testing and Troubleshooting

HEPA Filters

WARNING: HEPA Filter Fragility and Handling

HEPA filters are fragile, sensitive to moisture/temperature, and require strict handling and storage protocols.

Improper handling or storage can cause filter damage, leading to loss of filtration integrity and failure to meet clinical air cleanliness requirements.

Always follow the filter manufacturer’s handling instructions for transportation, storage, and installation.

ALERT: Responsibility for Filter Care

SLD Technology is not responsible for any damage to HEPA filters caused by improper storage or handling after delivery.

Notify SLD Technology immediately and notate on BOL if shipment arrived damaged in any way by contacting SLD Support at: support@sldus.com

Receive and Inspect

1. Prepare the site to accept and properly handle HEPA filters.
   
2. Filters purchased through SLD are drop-shipped directly from the filter manufacturer; therefore, SLD cannot provide a 24-hour delivery notice.
   
3. Inspect the skids and crates for any shipping damage. Notate on BOL and notify SLD immediately, support@sldus.com. 
4. Store filters indoors (under roof and enclosed) in a clean, dry, climate controlled space, and absolutely protected from moisture.
   

Recommended Balancing Method:

Damper Adjustment

All damper balancing components are downstream of the HEPA filter and can be adjusted without removing ceiling diffusers.

1. Insert a hex key wrench though the center hole of the Damper-Diffuser screen and into the damper mechanism.
2. Turn the hex key to adjust the guillotine slide plate to the desired position.
3. Remove the hex key after adjustment.
   

Figure 48: Damper Adjustment

Contacting Support

Figure 49: Submit a ticket online