CAT 1620-3 Daikin Self-Contained Air Source Unit Ventilators - Models AZQ, AZR and AZU
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Daikin Classroom Unit Ventilators Model AZQ, AZR, AZU Self-Contained Floor Units Size 024 (2 Ton) to 054 (4.5 Ton) R-410A Refrigerant, MicroTech II™ (“G” Vintage) People and ideas you can trust.™

Cooling Selection Example . . . . . . . . . . . . . . . . . . . 36 Daikin Classroom Unit Ventilators . . . . . . . . . . . . . . . 3 Size 024 (1000 SCFM) – 2nd Stage High Fan . . . . . 38 Size 024 (750 SCFM) – 1st Stage Medium Fan . . . 39 The Model AZ Floor Unit . . . . . . . . . . . . . . . . . . . . . . 5 Size 024 (650 SCFM) – 1st Stage Low Fan . . . . . . . 40 Size 036 (1250 SCFM) – 2nd Stage High Fan . . . . . 41 The Right Amount of Fresh Air and Cooling . . . . . . . . 7 Size 036 (1000 SCFM) – 1st Stage Medium Fan . . 42 Precise Temperature and Dehumidification Control . . 8 Size 036...

Daikin Classroom Unit Ventilators Low Installation Costs New construction installations are easily accomplished with Daikin unit ventilators because they avoid the added cost and space required for expensive ductwork. Retrofit installations are also economical because new units fit the same space occupied by existing ones. Factory installed MicroTech II controls with Protocol Selectability™ provide easy, low cost integration into the building automation system of your choice. For nearly a century schools have relied on unit ventilators to keep classrooms comfortable. Students learn more...

Nominal Performance Cooling Performance Nominal Airflow Total Capacity Ventilation Rate Power Input Unit Size Sensible Capacity C CAT 1620-3 • AZ SELF-CONTAINED UNIT VENTILATOR

The Model AZ Floor Unit The Model AZ is just right for new construction and for retrofit applications. Older buildings with baseboard radiant heat or other hydronic heating systems can be easily adapted to work efficiently with Model AZ units. Our Model AZ is a vertical, floor-standing unit that utilizes refrigerant for cooling, and hot water, steam or electric heat for heating. The Model AZ also can be supplied as a cooling/ventilating only unit. The major features of this model are shown below and described in more detail on the following pages. 6 1 Welded One-Piece Chassis • offers...

Features & Benefits GentleFlo Delivery Daikin unit ventilators are engineered and manufactured to deliver quiet, continuous comfort. We developed our GentleFlo™ air moving system to minimize operating sound levels – even as demands for more fresh air require units to operate longer and work harder. GentleFlo features include: • Fan wheels are large, wide and rotate at a low speed to reduce fan sound levels. They are impactresistant and carefully balanced to provide consistent performance. Offset, aerodynamic fan wheel blades move air efficiently (Figure 1). Precision tolerances help reduce...

Features & Benefits The Right Amount of Fresh Air and Cooling Daikin unit ventilators deliver required amounts of fresh air to meet ventilation requirements and added cooling capacity to maintain consistent comfort for students and teachers. Our Economizer Operation, Demand Control Ventilation (DCV) and Part Load, Variable Air options allow you to match classroom comfort requirements even more closely, and reduce operating costs. This means that you can be confident that your school is meeting ventilation standards for Indoor Air Quality and that your students are receiving adequate air to...

Features & Benefits Precise Temperature and Dehumidification Control Active Dehumidification (Reheat) Daikin unit ventilators provide precise temperature and dehumidification control to keep students and teachers comfortable while making maximum use of “free” outdoor-air cooling to reduce operating costs. They utilize a draw-thru fan design that contributes to even heat transfer and provides uniform discharge air temperatures into the classroom. MicroTech II control strategies and 2-stage compressor operation, provide precise control of temperature and humidity levels under both part-load...

Features & Benefits Daikin unit ventilators have many features that make them economical to purchase and to install in both new construction and retrofit applications. It is this attention to detail and understanding of school applications that make them the system of choice. Perfect For Both New & Retrofit Applications New construction installations are easily accomplished with Daikin unit ventilators because they avoid the added cost and space required for expensive ductwork. Further savings can be realized because piping installations use less space than duct systems. Low Operating Costs...

Features & Benefits MicroTech II Control Options Further Reduce Operating Costs Economizer Operation: Economizer operation automatically adjusts the above-minimum outside air position to provide free cooling when the outdoor air temperature is appropriate. Demand Control Ventilation: By using CO2 levels to monitor the actual occupancy pattern in a room, the system can allow code-specific levels of outdoor air to be delivered when needed without costly over-ventilation during periods of low or intermittent occupancy (Figure 7). The fan deck’s rotating element has one large, selfaligning,...

Features & Benefits Figure 10: Fan Deck 1/4" Mesh Screens Protects Against Objects Dropping into Fan Housings Heavy-Duty Discharge Grille Motor Located Out of Airstream Aerodynamic Fans Tamper-Resistant Fasteners Front panels and top access doors are held in place by tamper-resistant, positive-positioning fasteners. They are quickly removed or opened with the proper tool, but deter unauthorized access to the unit’s interior (See Figure 12 on page 12). Three filter types are offered: • Units come standard with a single-use filter which is designed to be used once and discarded. Optional,...

Features & Benefits Figure 12: Easy Access with Tamper-Resistant Fasteners Discharge Grille Tamper Resistant Fasteners Tamper Resistant Fasteners Tamper Resistant Fasteners Tamper Resistant Fasteners Rugged Exterior Finish Our industrial-strength design provides the durability to withstand the rigors of the classroom environment. Its solid construction and rugged finish promotes continued alignment, structural strength and long-lasting beauty decades after the unit is installed. In fact, many units installed over 30 years ago continue to provide quiet, reliable classroom comfort. The...