Global IFS Perimeter Natural Convection Terminal (PNT) October 2020

- D. Coordination Drawings:
- 1. Include floor plans, and other details, drawn to scale, on which the following items are shown and coordinated based on input from installers:
- a. Floor or underfloor-mounted items including:
- 1. Floor structure (floor tiles, concrete, etc.)
- 2. Floor finishing (carpet, tile, etc.)
- 3. Access panels
- 4. Electrical components
- 5. Plumbing
- 6. Networking components
- 7. Terminal Units and other HVAC components
- E. Operation and Maintenance Data: Include manufacturer’s descriptive literature, operating instructions, maintenance schedules and repair data, and parts lists.

### 1.06 Quality Assurance

- A. Manufacturer Qualifications: Company specializing in manufacturing the type of products specified in this section, with minimum ten years of documented experience.
- B. Product Listing Organization Qualifications: An organization recognized by OSHA as a Nationally Recognized Testing Laboratory (NRTL) and acceptable to authorities having jurisdiction.
- C. Electrical Components, Devices and Accessories: Listed and labeled as defined in NFPA 70, Article 100 by a testing agency acceptable to authorities having jurisdiction and marked for intended use.

### 1.07 Warranty

- A. See Section 01 78 00 - Closeout Submittals, for additional warranty requirements.
- B. Provide 12 month manufacturer warranty from date of shipment for grilles and registers.

### PART 2 – PRODUCTS

### 2.01 General

- A. Basis of Design: Global Integrated Flooring Solution Perimeter Natural Convection Terminal, Global IFS Model [PNT]
- 1. Substitutions will be considered, providing the alternative products meet or exceed the feature and performance requirements as indicated and prior written approval is received. The manufacturer shall certify that all panels meet or exceed the stated design criteria.
- B. General Product Information:
- 1. Furnish and install Global IFS model LBG linear bar grilles of the sizes and capacities indicated on the drawings or outlet schedule.
- 2. Unit sizes shall be selected in accordance with ASHRAE guidelines and manufacturer’s literature.
- 3. Manufacturers shall demonstrate that they have successfully supplied and installed underfloor HVAC products, as well as the computer modeling thereof for a minimum of 10 years.
- 4. Manufacturers must be pre-qualified to bid based on the completion of a minimum of [xx] jobs in similar climates.
- 5. Manufacturers shall provide a list of completed jobs and references.
- C. Underfloor Air System Controls:
- 1. Air Grilles and diffusers specified for underfloor service shall incorporate the following requirements:
- a. Damper construction shall include an integral flow-modulation damper and motor (air valve) that is specifically designed for low static pressure air distribution.
- b. Air dampers shall not include fast acting actuators that require high life cycle ratings.
- c. Airflow and throw heights shall decrease in response to lower space demands with flow-modulation of constant temperature plenum air. The flow-modulation technique shall be implemented to maximize stratification, leading to energy savings and increased thermal comfort.
- d. Modulation by timed duty cycle of fully open and closed periods shall not be acceptable. This type of modulation can greatly reduce stratification, removing potential energy savings. Timed duty cycle modulation also increases the possibility of creating stagnant zones and starving buoyancy driven flow. Any use of this type of modulation shall be modified in order to demonstrate stratification to the project team prior to being considered acceptable.
- 2. Plenum Rated Cables: Color-coded plug-and-play plenum rated cables shall be used between devices.
- a. Terminal block type plugs shall not be acceptable.
- b. Plug-and-play cables shall carry both the power and control signal to each device and connect to a single port on the device control board.

Diffusers, Registers, and Grilles - PNT 23 37 13 -2