CAT 903 Air Terminal Units
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Models MQTH, MQFCI and MQFVI Model MQTH Model MQFCI Model MQFVI

Single Duct Air Terminal Units . . . . . . . . . . . . . 3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 MQTH-500 Single Duct Air Terminal Unit . . . . . . . . . . . . . . . . . . . . . 3 Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . ....

Single Duct Air Terminal Units MQTH-500 Single Duct Air Terminal Unit The Daikin single duct terminal units are at the core of today’s variable air volume (VAV) systems. The staple of today’s HVAC system designer, VAV systems lower operating costs by using less central fan energy and less refrigeration energy. VAV systems also have lower first costs by allowing the designer to take advantage of the building’s diversity. The primary function of the Daikin single duct terminal units is to regulate conditioned air flow into an occupied zone in response to a control signal. Daikin single duct...

• Damper rotates in a self-lubricating, long life, low friction thermoplastic bearing Continuous Welds • Continuous welded primary inlet duct to minimize leakage with three stiffening beads for added rigidity Heavy-Duty Construction • Damper construction of double layer 18 gauge equivalent with mechanically fastened integral blade seal Multi-Quadrant Averaging Flow Sensor • All metal constructed inlet flow sensor with extra balancing taps Galvanized Steel Casing • Galvanized steel casing, mechanically sealed for low leakage construction NEMA 1 Control Enclosure • NEMA 1 rated control...

Dimensional Data MQTH-500 SINGLE DUCT AIR TERMINAL UNIT, COOLING ONLY Dimensional Data MQTH-500 Single Duct Air Terminal Unit, Cooling Only The standard location for control panel is Right Hand on Model MQTH. The control panel will overhang the top and bottom of model MQTH506 1" (25.4 mm). Control Panel Mounting Surface width by height is 13-7/8" × 9-3/4". Table 1: MQTH-500 Single Duct Air Terminal Unit, Cooling Only—Unit Dimensions, in. (mm) and Weights, lb. (kg) Model Number Inlet Size

Dimensional Data MQTH-500 SINGLE DUCT AIR TERMINAL UNIT WITH HOT WATER COIL MQTH-500 Single Duct Air Terminal Unit with Hot Water Coil The standard location for control panel is Right Hand on Model MQTH. 1 The control panel will overhang 1 top and bottom of model MQTH506 1" (25.4 mm) the 9 1 5 7 21 Control Panel Mounting Surface width by height is 13-7/8" 7 9-3/4". × 37 124 10 254 8 20 Table 2: MQTH-500 Single Duct Air Terminal Unit with Hot Water Coil—Unit Dimensions, in. (mm) and Weights, lb. (kg) Model Number Inlet Size

MQTH-500 SINGLE DUCT AIR TERMINAL UNIT WITH ELECTRIC HEAT Dimensional Data MQTH-500 Single Duct Air Terminal Unit with Electric Heat The standard location for control panel is Right Hand on Model MQTH. Looking in the primary inlet, the control panel is on the right. The control panel will overhang the top and bottom of model MQTH506 1" (25.4 mm). Control Panel Mounting Surface width by height is 13-7/8" × 9-3/4". Table 3: MQTH-500 Single Duct Air Terminal Unit with Electric Heat—Unit Dimensions, in. (mm) and Weights, lb. (kg) Model Number Inlet Size Unit Weight

Dimensional Data MQTH-500 SINGLE DUCT AIR TERMINAL UNIT WITH INTEGRAL ATTENUATOR MQTH-500 Single Duct Air Terminal Unit with Integral Attenuator The standard location for control panel is Right Hand on Model MQTH. The control panel will overhang the top and bottom of model MQTH506 1" (25.4 mm). Control Panel Mounting Surface width by height is 13-7/8" × 9-3/4". Table 4: MQTH-500 Single Duct Air Terminal Unit with Integral Attenuator—Unit Dimensions, in. (mm) and Weights, lb. (kg) Model Number Inlet Size Unit Weight

Dimensional Data MQTH-500 SINGLE DUCT AIR TERMINAL UNIT WITH INTEGRAL ATTENUATOR MQTH-500 Single Duct Air Terminal Unit with Integral Attenuator and Hot Water Coil AND HOT WATER COIL The standard location for control panel is Right Hand on Model MQTH. The control panel will overhang the top and bottom of model MQTH506 1" (25.4 mm). Control Panel Mounting Surface width by height is 13-7/8" × 9-3/4". Table 5: MQTH-500 Single Duct Air Terminal Unit with Integral Attenuator and Hot Water Coil— Unit Dimensions, in. (mm) and Weights, lb. (kg) Model Number Inlet Size Unit Weight

Performance Data Performance Data MQTH-500 AHRI Certified Rating Points Certifications and Standards • Units tested per ANSI/ASHRAE Standard 130 • All model sizes certified in accordance with AHRI 880 certification program • ETL listed to meet requirements of UL 1995 and CSA 236 • Dual-density fiberglass insulation meets UL 181 and NFPA 90A requirements • Insulation meets ASHRAE 62.1 requirements for resistance to mold growth and erosion Table 6: MQTH-500 AHRI Certified Radiated Sound Power, ∆Ps = 1.5 in.wg Unit Size Octave Band Table 7: MQTH-500 AHRI Certified Discharge Sound Power, ∆Ps =...

CAT 903 • AIR TERMINAL UNITS 12 www.DaikinApplied.com

Performance Data Table 12: MQTH-500 Discharge Sound Power at ∆PS = 0.50, 0.75 and 1.0 in.wg Unit Size ∆Ps = 0.50 in.wg. (125 Pa Octave Band Sound Power, Lw, dB 2

Performance Data Table 13: MQTH-500 Discharge Sound Power at ∆PS = 1.50, 2.0 and 3.0 in.wg. Unit Size ∆Ps = 1.5 in.wg. (375 Pa) Octave Band Sound Power, Lw, dB 2 ∆Ps = 2.0 in.wg. (500 Pa) Octave Band Sound Power, Lw, dB 2 ∆Ps = 3.0 in.wg. (750 Pa) Octave Band Sound Power, Lw, dB 2 CAT 903 • AIR TERMINAL UNITS 14 www.DaikinApplied.com

Performance Data Table 14: MQTH-500 Minimum Pressures, in. wg. Unit Size 504/505 4 & 5 inch 506 6 inch 1. ∆Ps = static pressure drop; ∆Pt = total pressure drop. 2. Calculations of ∆Ps and ∆Pt were performed using standard air with a density of 0.075 lbm / cu.ft. 3. Data based on testing standard Daikin hot water coils per AHRI Standard 410. 4. Unit ∆Ps and Unit ∆Pt are pressure drops across the air terminal unit while the inlet damper is in the wide-open position. 5. Data applies to air terminal units with hot water coil mounted on the discharge side. 6. “ —” is shown when the static...