PLAY-C

PART 1 – GENERAL

1.1 SUMMARY

A. High induction adjustable sectors round ceiling diffuser with full 360-degree horizontal adjustment from the face without tools; capable of swirl or directional patterns by sector orientation. Diffusers are shipped factory-adjusted as swirl diffusers.

B. Provide manufacturer-supplied plenums for all PLAY diffusers. Plenums shall be supplied by EffectiV and sized/configured for the scheduled diffuser model(s) and duct connection(s).

C. Provide volume dampers only where scheduled. Provide accessories (including air equalizer, acoustical liner, and thermal insulation) only where scheduled.

1.2 SUBMITTALS

A. Product Data: Manufacturer’s data for diffuser face and plenum, including published performance data for scheduled sizes and airflows: airflow range, pressure loss, throw, diffuser- generated NC, and induction ratio.

B. Shop Drawings: Show scheduled model, face size, neck size, plenum model and connection type, damper type and location (when provided), air equalizer type (when provided), finish/color, mounting type, and installation details. Indicate acoustical insulation and thermal insulation where specified or required for the application.

C. Airflow Prediction Report (Required): Provide manufacturer-generated room airflow prediction report for each diffuser type and unique room condition using manufacturer performance data and recognized correction methods (ΔT correction factors, Coanda effects, buoyancy effects, jet interaction, and wall/floor/ceiling collision effects). Report shall include:

1. 3D room layout with diffuser placement.
2. Predicted airflow visualization views: plan (top), section (side), elevation (front).
3. Throw distances for terminal velocities of 150, 100, 60, 50, 40, 30, and 20 fpm.
4. Pressure loss at scheduled airflow.
5. Diffuser-generated NC.
6. Perceived NC: sound pressure at room center (5 ft height) from all sources combined across 63–8000 Hz octave bands; include resulting NC and key assumptions used.

D. Verified CFD Validation (When Indicated): Provide EffectiV Verified CFD validation and summary report for spaces indicated on drawings and/or when diffuser operation is outside manufacturer published selection limits (airflow, ΔT, mounting height, geometry).

1.3 SUBSTITUTIONS

A. Substitutions per Division 01.

B. Proposed equals shall provide a line-by-line compliance matrix including all submittals in Part 1, including the Airflow Prediction Report deliverables.

PART 2 – PRODUCTS

2.1 BASIS OF DESIGN

A. EffectiV PLAY-C high induction adjustable sectors round diffuser; heavy-gauge powder coated steel face; face and plenum ordered separately.

2.2 DIMENSIONS AND AIRFLOW RANGE

A. Face: 25 in diameter (625 mm), unless otherwise scheduled.

B. Recommended airflow range: 160 to 315 cfm.

2.3 PERFORMANCE / APPLICATION LIMITS

A. Suitable for temperature differential up to 22°F (12°C) and ceiling heights 8.5 to 13 ft (2.6 to 4.0 m), unless otherwise indicated.

B. Diffuser shall allow approximately 60% flow variation while maintaining a stable air stream.

2.4 MATERIALS AND CONSTRUCTION

A. Face: Heavy-gauge steel, factory powder coated (TGIC-free), white M9016 unless otherwise scheduled.

B. Factory setting: Diffusers shall be shipped factory-adjusted for swirl discharge.

C. Adjustment: Manually adjustable sectors; each sector adjustable strictly horizontal with full 360-degree range from the face without tools.

D. Face-to-plenum attachment: Face and plenum are ordered separately and attached with a screw through the face fixed into the plenum crossbar.

2.5 PLENUMS AND DAMPERS (PLENUMS REQUIRED; DAMPERS/ACCESSORIES AS SCHEDULED)

A. Plenums (required): Provide PERFAIR plenums by EffectiV for all PLAY-C diffusers; attach diffuser face per manufacturer’s method.

B. Plenum features: Plenums shall include anti-seismic attachment tabs as standard.

C. Plenum selection (round), as scheduled:

1. PERFAIR-CS: Round plenum, side connection.
2. PERFAIR-CT: Round plenum, top connection.

D. Air equalizer (optional): Provide integrated air equalizer where indicated.

E. Volume damper (optional): Provide where indicated:

1. Perforated damper.
2. MRT: Manually operated damper, cable inside plenum, adjustment through face.
3. MRT2: Manually operated damper, cable through wall with termination fixture.
4. EB: Battery-operated electro-balance damper with remote control, cable through face.
5. EB2: Battery-operated electro-balance damper with remote control, cable through wall with termination fixture.

F. Plenum insulation (optional): Provide acoustical liner and/or thermal insulation where indicated; indicate type and thickness on Shop Drawings.

PART 3 – EXECUTION

3.1 INSTALLATION

A. Install diffuser and EffectiV plenum per manufacturer instructions.

B. Coordinate access for balancing and for any damper/equalizer adjustment.

3.2 ADJUSTING

A. If field adjustment is required, set sector positions to achieve scheduled air pattern (swirl or directional) and balance to scheduled airflow.