Kinetics Model FRS restrained spring isolators are engineered to reduce structure-borne noise and vibration from HVAC equipment and vertical pipe risers while limiting unwanted upward movement. The free-standing, laterally stable steel spring assemblies incorporate top and bottom load plates, noise-isolation pads, and an adjustable leveling and attachment bolt.
FRS isolators are suitable for air-cooled condensers, fans, rooftop mechanical equipment and vertical pipe risers exposed to load changes, maintenance activity, wind uplift or other external forces. Models are available with operating static deflections from approximately 25 to 51 mm and rated capacities from 16 to 1,588 kg.
Kinetics Group provides technical selection, product submittals and project quotations for consultants, MEP contractors, developers and facility teams across the UAE, GCC, Middle East, North Africa and wider MENA region.
Kinetics Noise Control Inc. Products
KINETICS® FRS Restrained Spring Isolators are vertically restrained spring vibration isolators designed for mechanical equipment, rooftop units, and vertical pipe risers where vibration isolation must work together with controlled upward movement. The isolators use free-standing, large-diameter, stable steel springs assembled into top and bottom load plate assemblies.
The FRS design provides vertical restraint when equipment load is removed or when external forces act on the supported equipment. This makes the product suitable for HVAC systems, MEP services, plant rooms, rooftop equipment, and building services installations where equipment stability and vibration control are both important.
Construction and Isolation Design
Each FRS spring element includes a 1/4 in. (6 mm) thick noise isolation pad. The top load plate assembly includes an adjusting and leveling bolt, allowing installers to level the supported equipment accurately. Holes are also provided for bolting the isolator to the supporting structure, while the leveling bolt allows attachment to the equipment.
To support stable performance, the springs have a lateral stiffness greater than 0.8 times the rated vertical stiffness. In addition, they are designed to provide a minimum of 50% overload capacity. FRS springs are available with deflections from 1.00 in. to 2.00 in. (25 mm to 51 mm) and capacities from 35 to 3500 lbs. (16 kg to 1588 kg).
Recommended Use
Model FRS vertically restrained spring isolation mounts are recommended as noise and vibration isolators for mechanical equipment located near critical areas. They are especially useful where upward travel must be limited during high wind loads, maintenance activities, or other external force conditions.
Kinetics Model FRS spring isolators are also recommended for equipment subject to weight change or external forces, including air-cooled condensers, fans, and other rooftop equipment. In addition, they support vertical pipe risers where upright motion must be limited while still isolating the riser from the building structure.
Specification Guidance
For equipment subject to load variations, wind loads, large external forces, or torquing forces, FRS vibration isolators provide large-diameter, laterally stable steel springs within formed or structural steel mounting assemblies. The assembly includes a bottom load plate and restraint assembly, top load plate, leveling and restraining bolt, and internal noise isolation pad.
The isolators include provisions for anchoring to the supporting structure and attaching to the supported equipment. Springs should be selected to provide the operating static deflections shown in the Vibration Isolation Schedule or as indicated in the project documents. Springs are color coded or otherwise identified to indicate load capacity.
Available Resources and Drawings
Kinetics provides supporting documentation for the FRS Restrained Spring Isolator, including a data sheet, installation guidelines, ASHRAE Type 3 DWG, ASHRAE Type 3 PDF, and submittal drawings. Available submittal drawing references include FRS-1-12/805, FRS-1-12/805 Metric, FRS-1-50/3500, FRS-1-50/3500 Metric, FRS-2-100/1975, and FRS-2-100/1975 Metric.
