Carnes SFPV User Manual

Imperial [IP] Dimensions

Metric (SI) in Parentheses

SPECIFICATION SHEET

Model SFPV

VAV Adjustable Thermal Diffuser

Dimensional Data

CARNES COMPANY, 448 S. Main St., P. O. Box 930040, Verona, WI 53593-0040 Phone: 608.845.6411 Fax: 608.845.6470 Email: CARNES@CARNES.com Web: www.CARNES.com

12055, Page 1

HEATING SLAVE

WARM-UP SENSOR

DISC (Flow Controller)

VAV COOLING POINT ADJUSTMENT

VAV HEATING SET

POINT ADJUSTMENT

SUPPLY AIR

ROOM AIR SAMPLE

ROOM AIR FLOW INDUCER

SOLID CENTER PANEL

(Perforated Panel Optional)

INDUCTION PATH

Room air is induced across elements #3 and by #4 by use of a simple induction wing. This diverts a small amount of supply air which induces a room air sample through an induction trough located on the back side of the appearance panel.

The Model SFPV VAV provides room temperature control for heating and cooling. Separately adjustable heating and cooling set-points. Factory room temperature set-points of 74 degrees.

Room air is induced past the thermal elements which sense and adjust air flow based upon space requirements. The elements are mechanical and require no electrical or pneumatic connections.

FEATURES

1. Construction: 24 gauge Electro-galvanized steel.

2. Controls: Self-contained, thermally actuated VAV control.

3. Models available: 24”x24” (610x610) with 6” (152),

8” (203), 10” (254), 12” (305) neck sizes.

4. Accessories: Plaster ceiling frames, spline, fine line, relief

adapter rings, baffles, perforated face plate.

5. Finish: Baked white enamel

23-3/4” (603)

23-3/4”

(603)

23-3/4”

(603)

3-1/2” (89)

3” (76)

•

AIR FLOW

17” (432)

17”

(432)

[Performance Data on Reverse]

SUGGESTED GUIDE SPECIFICATIONS

Thermally powered variable air volume diffuser shall be Carnes Model SFPV diffuser. Each unit shall be a self-contained, self-powered VAV room temperature control in a nominal 24”x 24” (610x610mm) diffuser. External wiring or pneumatics shall not be allowed.

The diffuser shall vary supply air volume to provide both VAV heating and VAV cooling. They shall be thermally powered by using two room temperature sensing elements, and two supply air sensing elements. The room temperature settings shall be separately adjustable.

One room sensing element shall sense room temperature and vary the support air when cooling. The other room sensing element shall sense room temperature and vary the supply air when heating.

Each room sensing element shall be factory set at 74 degree set point heating and cooling (approximately 3 turns out from plastic isolator bushing). For more heating, turn element #3 counterclockwise and less heating turn element #3 clockwise. For a cooler room temperature, turn element #4 clockwise. For a warmer room, temperature turn counterclockwise. Determine room temperature set-point by aligning the end of the element with the indicators on the temperature scale. Each full turn, or each indicator will equal plus or minus 2 degrees.

In the heating mode the VAV diffuser shall close on a rise in room temperature and in the cooling mode they shall open on a rise in room temperature. The change over element #2 shall be factory installed and set to engage the cooling mode when supply air temperature rises above 78 degrees F and return to the heating mode when supply air temperature falls below 68 degrees F.

Each unit shall have a circular cone shaped damper to provide maximum Coanda effect and to avoid dumping. Each unit shall have 1/8” (3mm) foam padding for quiet operation.

Each diffuser shall have an appearance panel that can be easily removed from the spring clips to allow adjustment of room temperature set points. Instructions for the diffuser shall be on the back side of the appearance panel.

The manufacturer shall warrant the diffuser for 10 years. The diffuser shall be free from defects in material and workmanship.

24”x 24” (610 x 610) SQUARE DIFFUSER PERFORMANCE

Throw @ Throw NC @

Listed Inlet SP Max. Maximum CFM 25% of CFM Max.

Size In. WG CFM Vt50 Vt100 Vt150 Vt50 Vt100 CFM*

.05 85 5 3 1 3 1 • .10 120 6 3 2 3 2 20

6” .15* 150 7 4 2 4 3 24

.20 170 8 5 3 6 4 28 .25 220 8 6 5 7 4 33 .05 160 6 4 2 4 2 • .10 225 8 5 3 5 3 20

8” .15* 275 9 5 4 6 4 25

.20 320 10 6 5 8 5 29 .25 355 12 7 6 9 6 33 .05 250 7 4 3 5 3 • .10 355 9 5 4 6 4 22

10” .15* 450 11 6 5 7 4 26

.20 500 12 7 6 8 5 29 .25 580 13 8 7 10 7 32 .05 365 8 5 4 6 4 • .10 520 11 7 6 8 5 23

12” .15* 650 12 7 6 8 6 27

.20 740 14 8 7 10 7 32 .25 820 15 10 9 11 8 38 .30 890 17 11 10 12 9 40

* Denotes nominal rating NC based on LW 10 -12W — 10 db

VtTerminal Velocity in fpm

• less than NC 20

FORM 12055, Page 2

Performance Data