KME
Air Terminal Bypass / Relief Terminals Application • Energy saving low pressure, variable air volume temperature control • Use with constant volume fan systems (no fan inlet or pressure controls) • Pressure dependent flow control – inlet balancing damper upstream from air terminal controls maximum flow rate. • VAV flow to the space to meet demand excess or relief air is returned directly into the ceiling plenum. • Control strategies using pneumatic,
Product Features • Single VAV primary air damper proportions the total flow into the box to either the space or ceiling • Round and rectangular inlet sizes • Relief adjustment damper located on top of casing for field balancing to maintain a constant total flow to the unit from maximum bypass to zero bypass • A balancing damper (not provided with the KME terminal) is required upstream to adjust the design maximum flow rate • 22 gauge steel casing lined with 25mm thick thermal-acoustical glass fiber (0.8mm) insulation (NFPA 90A & UL 181) • Easy to install and service
Options & Accessories • Electric duct heater (installed downstream of KME terminal) • Steel control enclosure, screw attached cover. • Insulation options: 25mm Fabric Cloth Liner • Unit mounting brackets (field installed) • Electric, electronic analog control systems
Product Selection Check List • Select Unit size based on desired performance characteristics. • Select inlet size based on design Airflow requirements. • Select Control Requirement.
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KME
Air Terminals Bypass / Relief Terminals
Air Terminal Casing Treatments KMC’s complete line of casing treatments and insulation systems provide performance solutions to meet any design requirement. We only use insulating materials that meet industry standard classifications for fire, erosion, water vapor sorption, and microbiological resistance.
25mm Foil Laminated Fiberglass Insulation Features: • High R-value & impervious foil facing with aluminum taped edges • Isolates glass fibers from the air stream • R Value: 32m.K/W @ 25° C • Density: 48kg/m3
25mm Matte Face- Black Cloth Under Insulation. Features: • High R-value & Matte face with black cloth Liner. • Isolates glass fibers from the air stream • R Value: 32m.K/W @ 25° C • Density: 48kg/m3
Fiber-Less Insulation Features: • Closed cell insulation – no glass fibers • 12/25mm Elastomeric Engineered Foam Insulation • R Value: 22 m.K/W @ 20° C • Density: 140-180 kg/m3
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KME
Air Terminals Bypass / Relief Terminals
Table 01: NC Values SIZE INLET
5A (5”)
6A (6”)
7A (7”)
8A (8”)
8B (8”)
10C (10”)
12D (12”)
14E (12x12)
16E (16x12)
18F (18x14)
CMH
CFM
MIN ΔPs
NUMBER OUTLETS
ROOM NC
136 204 272 204 357 510 306 510 713 408 629 849 680 883 1087 1019 1274 1529 1359 1869 2378 2039 2548 3058 2718 3398 4077 3567 4417 5351
80 120 160 120 210 300 180 300 420 240 370 500 400 520 640 600 750 900 800 1100 1400 1200 1500 1800 1600 2000 2400 2100 2600 3150
.01 .01 .02 .01 .03 .05 .02 .01 .04 .07 .02 .04 .08 .03 .05 .08 .04 .06 .09 .07 .14 .11 .17 .25 .12 .19 .27 .14 .21 .31
1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7
20 22 30 21 29 23 31 20 25 33 21 26 33 24 29 36 26 31 37 27 32 38 28 33 39
Notes 1. All sound data are measured in accordance with industry standard ARI-880 2. NC is sound pressure level based on 10dB room absorption for Lw re: 10-12 watts and number of outlets shown
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KME
Air Terminals Bypass / Relief Terminals
INLET SIZE
CASING CONSTRUCTION • Galvanized Steel 22 Gauge (Standard) • Galvanized Steel 20 Gauge (Optional)
• • • • •
125 (5ӯ) 150 (6ӯ) 175 (7ӯ) 200 (8ӯ) 225 (9ӯ)
• • • •
MODEL
250 (10”Ø) 300(12”Ø) 300 x 300 (12”x12”) 400 x 300 (16”x12”)
KME - Bypass / Relief Terminal
CASING TREATMENTS • 25mm (1”) Fabric Cloth Liner Insulation • 25mm (1”) Foil Faced Insulation • 25mm (1”) Foil Faced Insulation • 12/25mm (½” /1”) Fiber-Less Insulation
CONTROL SYSTEM • Electronic Analog Controls • Electric Controls Control stratergies available for all applications
ACCESSORIES
CONTROL SIDE • Right Side • Left Side
CASING OPTIONS
ELECTRIC CONTROLS
• Unit Mounting Bracket (shipped loose) • Standard Control Enclosure • Hinged Front Panel (control enclosure)
• • • • • •
Control Transformer Low Voltage Control Disconnect Swich. Low Voltage Fuse & Fuse Block Low Voltage Disconnect Switch Low Voltage Power-Fusing 24 VAC Actuator
Typical Specification Furnish and install KMC’s Model KME variable air volume, cooling only bypass / relief type air terminals where shown on the plans. The terminals shall consist of a single primary air damper that shall proportion the total primary air through the terminal to either the ceiling plenum or the space as dictated by the space thermostat demand. The flow into the relief terminal shall remain essentially constant regardless of the primary damper position. The terminal casing shall be fabricated of minimum 22 gauge zinc coated steel, and shall be lined with minimum 25mm thk fiberglass insulation conforming to ASTM C1071. A radiated noise shroud shall limit the radiated sound levels not to exceed those shown in the air terminal unit schedule. A bypass adjustment damper shall be located on the top of the unit to allow for field balancing of the unit to maintain a constant total flow to the unit from maximum to zero bypass. A balancing damper (provided by the installing contractor) shall be located a minimum o f three diameters upstream of the relief air terminal to adjust the constant volume flow to the unit.
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The terminal controls shall include a mechanical damper position stop or other means to keep the damper from closing to full shut-off, providing a minimum air flow across the coil during the heating mode. Electric Control Systems Electric controls shall be compatible with the line voltage feed to the terminal and shall include a step down transformer as required for control voltage compatibility. The electric actuator shall be designed for permanent stall without damage. A steel control enclosure shall house all control components. The wall thermostat shall be supplied by the (terminal manufacturer) (control contractor) and shall be compatible with the air terminal electric controls.
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