DORMA BTS80D-4-74010-LH-605 BTS80 Concealed Floor Closer With Hold Open Bright Polished Brass

BTS80 SeriesFloor Concealed Door Closers

The BTS80 Series of floor-concealed door closers offers adaptability to almost any installation.
The closer’s compact body permits its use where a larger closer would be prohibitive. Versatility allows installation in thin slab concrete subfloor construction. A wide selection of interchangeable spindles makes the BTS80 suitable for virtually any floor covering or threshold application. Because the BTS80 can control exceptionally heavy single- and double-acting doors, you can incorporate the floor closer into almost any design to meet most materials, size, and weight requirements. Trouble-free performance under adverse climatic and traffic conditions makes the BTS80 floor-concealed closer dependable and a perfect choice for even the most rigorous applications. For total control and uncompromising creativity for any door opening, specify a BTS80 floor-concealed closer.

Features: ANSI Spring Size:

• BTS80 - 3
• BTS80 - 4, 6
• BTS80 F - 5

Non-handed for both single-and doube-acting doors:

• BTS80 - yes
• BTS80 - yes
• BTS80 F - no

Controlled closing with two adjustable valves:

• BTS80 - 175°–70°70°–0°
• BTS80 - 175°–70°70°–0°
• BTS80 F - 180°–70°7°–0°

Mechanical backcheck:

• BTS80 - no
• BTS80 - yes
• BTS80 F - yes

Delayed Action:

• BTS80 - yes
• BTS80 - yes
• BTS80 F - no

Multipoint hold open between 75° and 175°:

• BTS80 - yes
• BTS80 - yes
• BTS80 F - no

Certification:

• The DORMA BTS80 F Series is listed by U.L. and C.U.L. under their continuing reinspection programs.

• The DORMA BTS80 Series is certified to the requirements of ANSI/BHMA A156.4 for grade 1 closers.

Specifications:

• All floor-concealed door closers shall be DORMA BTS80 Series employing a cam and roller mechanism.

• The closers shall be capable of controlling interior or exterior doors weighing up to 660 lb and measuring up to 4'-0" wide exterior and 4'-6" interior.

• The closers will have selectable multipoint hold open between approximately 75° and 175°.

• The closers will have selectable delayed action to allow delayed closing from 175° to 75°.

• The closers will have mechanical backcheck at approximately 70°.

• Dual valve adjustment will provide controlled closing speed from approximately 175° opening range, even in cold temperature conditions.

• The closer will provide adjustment within the cement case to allow lateral and longitudinal adjustment of 1/4" and vertical height adjustment of 5/32".

• Field interchangeable spindles will be available to provide bottom door clearances ranging from 5/16" to 2-5/16".

Optional Specifications:

• The closers should be used with sealing compound SC2 to pre-vent water or cleaning solvent from entering the cement case.

• Floor-concealed door closers for all fire doors shall be DORMA BTS80 F.

• The closers shall be single-acting and have controlled closing from a full 180°.

• A sweep range of 180°– 0° and latch range of 7°– 0° will help insure positive latching of the door.

Optional Plated Finishes: Brass:

• 605 (Bright)
• 606 (Satin)

Bronze:

• 611 (Bright
• 612 (Satin)
• 613 (Oxidized Satin Oil Rubbed)

Nickel:

• 618 (Bright)
• 619 (Satin)

Chrome:

• 625 (Bright)
• 626 (Satin)

Standard Sprayed Finishes: Aluminum:

• 689

Bronze:

• 691 (Dull)
• 690 (Statuary)
• 695 (Dark Duranodic)

Gold:

• 696

Black:

• 693

• Optional DORMA Custom Color or Designer Color FinishesContact Customer Service.

Warranty:

• For details, refer to DORMA Limited Warranty on our website at go.dorma.com/terms.

BTS80 Series Technical Details:

• Compact closer body and cement case 2-3/8" deep suited for thin slab concrete construction.

• Accommodates doors weighing up to 660 lb and 4'-6" wide interior and 4'-0" exterior.

• Closer adjustment in cement case provides lateral and longitudinal adjustment of 1/4" and height adjustment of 5/32".

• A pressure relief valve protects closer from damage caused by forced closing.

• Optional sealing compound SC2 prevents water or cleaning solvent from entering the cement case.

• If door hardware or adjacent structures interfere with maximum opening, an auxiliary stop should be installed.

BTS80 Technical Details:

• Closer body is non-handed.

• Mechanical backcheck at approximately 70°.
  (excluding size 3, where backcheck is removed to meet barrier-free through 90° of opening for easier passage)

• Selectable delayed action between 175° and 75°. Extends the closing cycle to allow unobstructed passage.

• Delayed action is functional when hold open is not engaged.

• Dual thermostatic control valves combined with special hydraulic fluid provide controlled closing from 175°.

• Selectable multipoint hold open between approximately 75° and 175°.

• Adjustment for start of hold open range or when delayed action releases. Adjustable between 75° and 105°.

BTS80 F Technical Details:

• U.L. listed for use with fire doors.

• Closer body is handed.

• Non-hold open only.

• Mechanical backcheck at approximately 70°.

• Dual thermostatic control valves combined with special hydraulic fluid provide controlled closing from 180°.

• Recommended for applications using a wall magnet to hold a door open at 180°.