specs

G. Combination Fire/Smoke dampers, galvanized steel, UL label fire equal to Ruskin FSD60 with
TS150. Coordinate the exact power requirements with the electrical contractor.
1. Provide combination fire and smoke dampers where shown on the drawings. Dampers shall
meet all requirements of fire dampers and additionally shall include an operating shaft,
which, when rotated 90° causes the damper to operate between closed and open.
2. Each damper shall be furnished complete with factory sleeve and damper operator (electric
to conform to control system) factory installed on exterior of sleeve and properly linked to
damper operating shaft. Operators shall be UL listed and labeled as Fire Damper
Operators.
3. Provide access doors for fire and smoke dampers as specified for fire dampers.
4. The fire dampers shall be normally closed, held open with 120V power. Upon loss of power,
the dampers shall shut, upon regaining power, the damper shall open.
H. Mark all air balancing devices in balanced position with permanent paint. Tie a ribbon around
the exposed handle.
I. All duct connections shall have balance dampers whether shown on the drawings or not.
J. SMOKE DAMPERS
1. All motorized smoke dampers shall be furnished under this Section and installed per the
manufacturer's UL installation instructions.
2. Smoke dampers shall be qualified to and listed under Underwriters' Laboratories Standard
UL 555S, September 1983 or latest version for Leakage Class II (10 cfm/SF at 1 inch W.G.)
performance after 30 minute exposure at 350oF. Dampers shall also conform to NFPA 90A
smoke damper requirements.
3. Damper frames shall be constructed of minimum #16 gauge galvanized steel channel and
shall have flanges for duct mounting. All blade to blade linkage on each section shall be
concealed within the damper frame. In no case shall the section linkage be exposed to the
air stream. The maximum size of single section not larger than 48 inches or less in width
and 72 inches or less in height. The blades of multiple section dampers shall be
interconnected with appropriate jack shafts.
4. Damper blades shall not exceed 6 inches in width. Larger damper sections shall be of
multiple blade type construction. Blades shall be constructed of galvanized steel with
minimum #16 gauge equivalent thickness. Blade pins and linkage shall be zinc-plated steel.
Bearings shall be stainless steel or oil-impregnated sintered bronze. Blade seals shall be
silicone rubber, compression type flexible steel or a combination of both.
5. Operators shall be mounted by the damper manufacturer at the time of damper fabrication
and shall be provided with the damper as a single unit. Operators shall be qualified and
labeled under UL 555S, September 1983 or later version.
6. Operators shall be electric, 120V, rated to 350oF. The operators shall be of sufficient
demonstrated power to open the dampers from a fully closed position against a 4 inch W.G.
static pressure differential and to close the dampers from a fully open flow rate of 3000 fpm.
Operators shall be mounted outside of the air stream and shall be for normally closed
damper operation.
7. Approved manufacturers: Ruskin Model SD60 or equivalent.
K. Motorized/Automatic Control Dampers:
1. Furnish and install, at locations shown on plans, or in accordance with schedules. Control
damper shall be manufactured by an ISO 9001 accredited manufacturer that meets the
following minimum construction requirements.
2. Damper frames (when size permits) shall be constructed using roll-formed structural hat
channels, reinforced at the corners, formed from a single piece of minimum 16 gauge (1.6)
galvanized steel.
3. The roll-formed frames shall be structurally superior to13 gauge U-channel frames. The
blades shall be opposed blade, single skin, 16 gage (1.6) galvanized steel with three
longitudinal grooves for reinforcement. Blade edge seals shall be PVC coated polyester
fabric suitable for -25°F to +180°F (-32°C to +83°C) mechanically locked into the blade
edge.
4. Jamb seals shall be flexible stainless steel metal, compression type to prevent leakage
between end of the blade and the damper frame. Use of the blade end to overlapping frame
for jamb seal is not acceptable. Adhesive or clip-on type seals for blade and jamb seals are
Cinemark 15500 - 6 Heating, Ventilating and Air Conditioning
South Napa Century Center XD 12 EnviroDesign, Inc., Bid Issue 7-7-11