NanaWall SL70: The Monumental Thermally Broken Aluminum Framed Folding System

Introduction & Overview

The SL70 system is engineered for high structural performance and weather resistance, suitable for high-rise structures and buildings. It offers advanced thermal break technology for improved energy efficiency and comfort. The system is available in numerous configurations and can accommodate large panel sizes.

Key Features & Performance

High Structural Performance

Tested in accordance with AAMA/WDMA/CSA 101/I.S.2/A440, units with panel sizes of 3' x 8' achieved DP ratings of +70 psf / -100 psf for inswing (Higher weather performance sill) and +/-70 psf for outswing (Higher weather performance sill) and inswing/outswing (saddle sill). Refer to Design Windload Charts for other panel sizes.

High Water Resistance

Static water resistance testing showed no leakage at 9 psf for inswing/outswing units with a Higher weather performance sill. Dynamic water resistance tests achieved Performance Level 2 (no leakage more than allowable at 6-18 psf) for inswing and Performance Level 1 (no leakage more than allowable at 5-15 psf) for outswing units with the same sill.

NFRC-Approved Thermal Performance

The SL70 models are rated, certified, and labeled in accordance with NFRC 100/200/500. Specific glass options can meet Energy Star U-factor and SHGC values for certain climate zones.

Florida Product Approval

The SL70 system holds Florida statewide approval (Product Approval number FL35025), including segmented and cornerless units.

Acoustical Performance

Testing by an independent acoustic lab shows STC/Rw values of 33 and OITC of 27 with STC 32 glass, and STC/Rw values of 41 and OITC of 33 with STC 43 glass. Higher ratings are achievable with different glazing options.

Life Cycle Performance

The SL70 meets the German "DIN EN 1191/12400 Classification," demonstrating functionality after 20,000 opening and closing cycles.

Monumentally Sized Design Options

The system supports panel heights up to 12' 0" and panel widths up to 4'. Heavier or thicker glass, such as bullet-resistant laminated glazing, can also be accommodated.

Running Post, Floor-Mounted System

This design is ideal when header vertical load-bearing capacity is a concern, as the system's weight is primarily supported by the floor track. Stainless steel rollers on a stainless steel track cover ensure smooth operation.

Cornerless and Segmented Units Possible

The system allows for angled units (90° or 135°) and segmented angles between panels up to 6 degrees. Animations demonstrating these concepts are available on www.nanawall.com.

System Components & Options

Superior Thermal Break

The system features a thermally broken design with a wide polyamide plastic reinforced with glass fibers, enhancing strength, humidity control, acoustics, and energy savings.

Frame and Panels

Frame components are 3 1/8" (80 mm) extruded aluminum, thermally broken with 3/4" (20 mm) polyamide plastic. Panels and running posts are 2 3/4" (70 mm) extruded aluminum, also thermally broken with 15/16" (24 mm) polyamide plastic. A variety of powder coating, anodized, and fluoropolymer kynar finishes are available, with options for different finishes on the inside and outside.

Glazing Options

Units can be glazed with 15/16" (24 mm) double insulated glass, or 1 1/2" (38 mm) triple insulated Low-E safety glass. Other high-performing safety glass options, including Heat Mirror and acoustic glass, are available upon request. Refer to "Glazing" in the General Introduction for further details on glass thickness.

Weatherstripping

EPDM or brush seals are provided for weatherstripping between panels and between panels and frames.

Hardware Options

Multiple locking options are available for the main entry panel, including multi-point locking, deadbolt locks, and single-action emergency access systems.

Locking Hardware and Handle Options

For folding panels (excluding the first opening panel in units without a swing panel), two-point locking hardware is standard. Units with a swing panel offer multi-point locking with lever handles, locksets, latches, and deadbolts. Other options include deadbolt locks with push/pull handles and single-action interconnected locking. For exterior use in high wind conditions, additional one-point locks can be engaged. Panic hardware can be installed by others, but this may affect structural design windloads.

Handle Finish Schemes

Standard finishes include brushed satin or black titanium for lever handles. Optional finishes include anti-viral/anti-microbial copper-nickel, and brass lever handles in various finishes. Push/pull handles are available in brushed stainless steel.

Testing Results

Higher Weather Performance (Raised) Sill

Air Infiltration

Inward Opening Units: @ 1.57 psf (75 Pa): 0.16 cfm/ft² (0.02 exfiltration); @ 6.24 psf (300 Pa): 0.20 cfm/ft². Outward Opening Units: @ 1.57 psf (75 Pa): 0.02 cfm/ft² (0.03 exfiltration); @ 6.24 psf (300 Pa): 0.08 cfm/ft².

Static Water Penetration

No uncontrolled water entry @ 9 psf (440 Pa) for both inward and outward opening units.

Structural Load Deflection

Tested to TAS 202 & ASTM E-330: Pass. For 8' tall units: 70 psf positive, 100 psf negative (inswing) or 70 psf positive/negative (outswing). For 10' tall units: 45 psf positive, 70 psf negative (inswing) or 70 psf positive, 45 psf negative (outswing). Test pressures were 50% higher than design pressures.

Dynamic Water Penetration

Inswing units achieved Performance Level 2 (no water entry more than allowable at 6-18 psf). Outswing units achieved Performance Level 1 (no water entry more than allowable at 5-15 psf).

Life Cycle Performance

Meets German "DIN EN 1191/12400 Classification" after 20,000 cycles.

Forced Entry Resistance

Tested in accordance with AAMA-1304 and ASTM F842 requirements.

Thermal Performance (Higher Weather Performance Sill)

Low Profile Saddle Sill

Air Infiltration

Inward Opening Units: @ 1.57 psf (75 Pa): 0.15 cfm/ft² (0.14 exfiltration); @ 6.24 psf (300 Pa): 0.29 cfm/ft². Outward Opening Units: @ 1.57 psf (75 Pa): 0.14 cfm/ft² (0.15 exfiltration); @ 6.24 psf (300 Pa): 0.30 cfm/ft².

Static Water Penetration

Unit with weep holes from middle channel: No uncontrolled water entry @ 2.1 psf (100 Pa). Unit with weep holes from inner channel: No uncontrolled water entry @ 5.25 psf (250 Pa). Field modifications for drainage are recommended.

Structural Load Deflection

Tested to TAS 202 & ASTM E-330: Pass. For 8' tall units: 70 psf positive, 70 psf negative (both inward and outward). For 10' tall units: 45 psf positive, 55 psf negative (inward) or 55 psf positive, 45 psf negative (outward). Test pressures were 50% higher than design pressures.

Life Cycle Performance

Meets German "DIN EN 1191/12400 Classification" after 20,000 cycles.

Operation / Cycling Performance

For swing panel attached to side jamb: 500,000 cycles - pass (AAMA 920).

Forced Entry Resistance

Tested in accordance with AAMA-1304 and ASTM F842 requirements.

Thermal Performance (Low Profile Saddle Sill)

Flush Sill

Air Infiltration

Inward Opening Units: @ 1.57 psf (75 Pa): 0.15 cfm/ft² (0.14 exfiltration); @ 6.24 psf (300 Pa): 0.29 cfm/ft². Outward Opening Units: @ 1.57 psf (75 Pa): 0.14 cfm/ft² (0.15 exfiltration); @ 6.24 psf (300 Pa): 0.30 cfm/ft².

Structural Load Deflection

Tested to ASTM E-330: Pass. For 8' tall units: 70 psf positive, 70 psf negative (both inward and outward). For 10' tall units: 45 psf positive, 55 psf negative (inward) or 55 psf positive, 45 psf negative (outward). Test pressures were 50% higher than design pressures.

Life Cycle Performance

Meets German "DIN EN 1191/12400 Classification" after 20,000 cycles.

Thermal Performance (Flush Sill)

Acoustical Performance

Results include STC (Rw) 33 and OITC 27 with STC 32 glass; STC (Rw) 41 and OITC 33 with STC 43 glass; and STC (Rw) 43 and OITC 35 with STC 48 glass.

Acoustical Performance Interpolation

Design Charts

Design Windload Chart

These charts illustrate allowable design wind loading (PSF) versus panel height for various panel widths. They apply to negative design pressures for inswing units and positive design pressures for outswing units with the Higher Weather Performance Sill (Page 11), or for inswing/outswing units with the Higher Weather Performance, Low Profile Saddle, and Flush Sills (Page 12), or for inswing/outswing units with the Low Profile Saddle and Flush Sills (Page 13). Charts are based on Allowable Stress Design (ASD) pressures.

Maximum Size Chart

This chart displays maximum frame height and width combinations based on the number of panels and specific configurations (A, B, C, D). It indicates requirements for horizontal mullions for certain heights and configurations, and notes that larger panels may require more than one person for operation. Maximum sizes are based on net glass thickness up to 3/8" (10 mm).

Maximum Size Chart by STC Requirement

These charts provide maximum size limits for units with STC ratings between 32-36 (Page 15) and 38-42 (Page 16), detailing allowable configurations and panel counts based on unit width and height.

Technical Details & Installation

Relationship of Frame, Panel and Glass Daylight Opening Sizes

Provides formulas for calculating nominal frame height (FH) and frame width (FW) based on panel dimensions and specific configurations. For example, Frame Height = Panel Height + 84 (3 5/16") for the Higher Weather Performance Sill.

Section Details

Detailed cross-sectional views illustrate various system components and configurations:

Inward Opening Section Details

• Detail 1.0: Head Jamb
• Detail 2.0: Higher Weather Performance Sill (Raised sill)
• Detail 23.0: Surface Mounted Interior Sill
• Detail 24.0: Low Profile Saddle Sill (requires field modification for water rating)
• Detail 26.0: Flush Sill (no rating against wind driven rain)
• Detail 4R.0: Swing panel with locking right side jamb
• Detail 4.0: Swing panel with locking left side jamb
• Detail 7.0 & 7R.0: Folding panels with locking
• Detail 7C.0 & 7RC.0: Folding panels with running carriage set
• Detail 10.0: Meeting of swing panel with locking on left and folding panel with running carriage set on right
• Detail 10R.0: Meeting of swing panel with locking on right and folding panel with running carriage set on left
• Detail 5.0: Panel with running carriage set meeting left side jamb
• Detail 5R.0: Panel with running carriage set meeting right side jamb
• Detail 9R.0: Meeting of panels folding to opposite sides (no swing panel), running carriage sets on both panels
• Detail 9.0: Meeting of panels folding to opposite sides (no swing panel), running carriage sets on both panels
• Detail 3R.0: Panel hinged at left side jamb
• Detail 3.0: Panel hinged at right side jamb with foam insert
• Detail 8.0: Two swing panels with locking, left panel opening first
• Detail 8R.0: Two swing panels with locking, right panel opening first

Outward Opening Section Details

• Detail 1.1: Head Jamb
• Detail 2.1: Raised Sill (higher weather performance sill)
• Detail 23.1: Surface Mounted Interior Sill
• Detail 24.1: Low Profile Saddle Sill (requires field modification for water rating)
• Detail 26.1: Flush Sill (no rating against wind driven rain)
• Detail 4.1: Swing panel with locking at left side jamb
• Detail 4R.1: Swing panel with locking at right side jamb
• Detail 7.1 & 7R.1: Folding panels with locking
• Detail 7C.1 and 7RC.1: Folding panels with running carriage set
• Detail 10.1: Meeting of swing panel with inside locking on left and folding panel with running carriage set on right
• Detail 10R.1: Meeting of swing panel with inside locking on right and folding panel with running carriage set on left
• Detail 5.1: Panel with running carriage set meeting left side jamb
• Detail 5R.1: Panel with running carriage set meeting right side jamb
• Detail 9R.1: Meeting of panels folding to opposite sides (no swing panel), running carriage sets on both panels
• Detail 9.1: Meeting of panels folding to opposite sides (no swing panel), running carriage sets on both panels
• Detail 3R.1: Panel hinged at left side jamb
• Detail 3.1: Panel hinged at right side jamb
• Detail 8.1: Two swing panels with locking, left panel opening first
• Detail 8R.1: Two swing panels with locking, right panel opening first

Other Section Details

• Typical Mullion Profile
• Typical Glass Stop Profile with Triple Glazing
• Typical Kickplate
• Typical Simulated Divided Lites Muntin with Spacer between insulated glass (SDL)

Installation

Suggested typical installation drawings are provided for inward and outward opening systems, detailing head jambs, panel configurations, and sill types. Installation considerations include panel weights (approx. 5.5-7.5 lbs/ft² for double glazing, 7-8 lbs/ft² for triple glazing) and header deflection requirements (L/720 of span or 1/4" (6 mm)). Notes emphasize the need for proper design of fasteners, flashing, waterproofing, sealant, and trim based on specific site conditions. Drainage for sills may require field modifications.

Contact Information

For more information, visit www.nanawall.com.