CAT 1610-2 - Daikin Classroom Unit Ventilators- Model AH Ceiling Units
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Daikin Classroom Unit Ventilators Models AHF, AHB, AHV and AHR Ceiling Units People and ideas you can trust.™

Daikin Classroom Unit Ventilators . . . . . . . . . . . . . . . . . . . . 3 AHRI Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Quick Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . Chilled Water Selection Example . . . . . . . . . . . . . . . . . . . . Hot Water Heating Selection . . . . . . . . . . . . . . . . . . . . . . . Quick Selection Method Using MBH/ΔT . . . . . . . . . . . . . . Two-Pipe Chilled-Water/Hot-Water Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steam Heating Selection . . . . . ....

heat transfer and uniform discharge air temperatures into the classroom. Coupled with face and bypass air control and our MicroTech™ II active and passive dehumidification control strategies, they provide precise control of temperature and humidity levels. 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. Multiple...

AHRI Performance Table 1: AHRI Performance Data Model Unit Size Cooling Coil Rows Total Capacity Btuh Sensible Capacity Power Input Ventilation Rate Notes: Rated in accordance with AHRI Standard 840-98 for Unit Ventilators Capacity is based on 80°F db, 67°F wb entering air temperature, 45°F enter water temperature and high-speed fan. CAT 1610-2 • MODEL AH UNIT VENTILATOR

Model AH Ceiling Unit Features Our Model AH is a horizontal, ceiling-mounted unit that is designed for rooms where floor space is at a premium. It utilizes remotely-supplied chilled water or refrigerant for cooling, and hot water, steam or electric heat for heating. It also can be supplied as a cooling/ventilating unit only or as a heating/ventilating unit only with the option of adding cooling at a later date. exposures, including completely exposed, partially or fully recessed, or completely concealed. Older buildings with baseboard radiant heat or other hydronic heating systems can be...

Features & Benefits Quiet Operation With Our 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 2). •...

Features & Benefits The Right Amount of Fresh Air and Cooling Part-Load Variable Air Control 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, Part Load Variable Air control can be used in conjunction with face and bypass damper temperature control to automatically adjust the unit ventilator fan speed based upon the room load and the room temperature. This MicroTech II control option provides higher latent cooling capabilities and...

Features & Benefits Precise Temperature and Dehumidification Control 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. Coupled with face and bypass damper air control and/or our MicroTech II active and passive dehumidification control strategies, they provide precise control of temperature and...

Features & Benefits This illustrates that the most effective way to maintain an acceptable humidity level with a chilled-water unit ventilator system is to use a face and bypass damper, draw-thru unit. MicroTech II controls minimize the amount of reheat needed to maintain relative humidity below a preset limit. Reheat is used only when required and in the most energy-efficient manner possible. See "Active Dehumidification Control (Reheat)" on page 63 for more information. Why Blow-Thru Designs Don’t Measure Up Blow-thru designs cannot provide comfort like this. With blow-thru designs, the...

Features & Benefits • Built-In Wire Race: A built-in metal wire race runs 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. from one end of the unit to the other to provide extra protection for wires and protect them from unit air. • Adjustable, Double-Deflection Discharge Grille Units with front and bottom discharge come standard with four-way, double-deflection discharge grilles...

Features & Benefits With MicroTech II controls, you select BACnet, LonTalk or Metasys N2 communications to communicate control and monitoring information to your BAS, without the need for costly gateways. Unit controllers are LONMARK certified with the optional LONWORKS communication module. Controls and communication modules can be factory provided or field-installed by others. Factory integrated and tested controller, sensor, actuator and unit options promote quick, reliable start-up and minimize costly field commissioning. You can also use our Digital Ready option, where we...

Features & Benefits Easy Access Doors and End Panel Daikin Unit Ventilators are designed to provide easy access for maintenance and service personnel to all serviceable components. Most maintenance tasks are easily handled by a single person. All ceiling units are equipped with hinged access doors to the filter and controls for ease of maintenance. This enables one person to service the unit instead of a crew. Retainer chains are included to facilitate reduced access panel movement during opening. The entire fan deck is easily removed as a single unit. This provides ready access to fan...