Environmental Control
The perfect environmental control system for small computer centers, electronic, telephone, and battery rooms, or wherever spot cooling may be necessary and space is a problem.
The Mini-Ceiling System is the perfect environmental control system for small computer centers, electronic, telephone, and battery rooms, or wherever spot cooling may be necessary and space is a problem. Units are engineered to be ducted above ceiling applications. The Mini Ceiling offers a high standard of performance with capacities from 1.5 – 2.5 tons.
SALES LITERATURE
DIMENSIONAL DRAWINGS
Air Cooled Split with outdoor condenser – CO 1, 1.5, 2 and 2.5 ton
Air Cooled Split with outdoor condensing unit – AO 1, 1.5, 2 and 2.5 ton
Air Cooled indoor packaged – P 1, 1.5, 2 and 2.5 ton
Air Cooled Split with indoor condenser – CI 1, 1.5, 2 and 2.5 ton
Air Cooled Split with indoor condensing unit – AI 1, 1.5, 2 and 2.5 ton
Water/Glycol Cooled – DAMW/G 1, 1.5, 2 and 2.5 ton
CONFIGURATION DRAWINGS
INSTALLATION
INSTALLATION, OPERATION & MAINTENANCE MANUAL
FIELD TEST SHEET
CONTROLS
Standard units are shipped with a thermostat and sub-base for remote wall mounting. An optional wall mounted microprocessor is available (See Mini-dap4 Options Section).
CABINET
Units are designed with a supply and return air plenum that fits in a 2 ft. x 4 ft. opening of a standard dropped ceiling grid. The field installed supply and return air plenum is constructed of aluminum and finished with off-white textured paint. Both the supply and return air grilles are hinged for easy access when replacing filters. A 2 inch, 30% efficient filter (based on ASHRAE Std. 52-76)MERV 8 is provided behind the return air grille. Mini Ceiling Systems are constructed with tubular steel frames for strength and service access. Removable panels of galvanized steel are lined with 1/2 inch thick, closed cell insulation for quiet and efficient operation.
EVAPORATOR SECTION
The evaporator coil contained in each unit is constructed with copper tubes and aluminum fins mounted in a stainless steel drain pan. The drain pan is made witha bottom drain connection and installed in a manner that provides a positive drain to prevent standing water in the condensate pan. The refrigeration circuit includes a scroll compressor with internal overload protection and crankcase heater. The circuit includes an expansion valve with an external equalizer, filter drier, sight-glass, and high and low pressure safety switches. The high and low pressure safety switches are connected to the refrigerant system with a Schrader fitting that allows replacement without affecting the refrigerant charge, making recovery unnecessary.
The blower assembly is a draw-through type with a centrifugal, forward curved, double width, double inlet blower configuration engineered for quiet, reliable operation. The belt driven variable pitch drive provides adjustable air flow capability to match the requirements of the controlled space. The draw-through design insures even distribution across the coil, low internal cabinet losses, and static sealing of the filter section. The motor has internal overload protection and is mounted on an adjustable slide base.
SELF-CONTAINED UNITS
SPLIT SYSTEMS
Air cooled systems are available with an outdoor condensing unit or remote air cooled condenser.
REMOTE MOUNTED TEMPERATURE and HUMIDITY SENSORS
Temperature and humidity sensors are provided in a wall mounted plastic case for remote sensing of temperature and humidity. Standard unit sensors are removed. Requires field wiring of (field provided) shielded cable. Remote temperature and humidity sensors option only available when used with the Data Alarm Mini Processor II.
STEAM GENERATOR HUMIDIFIER
The steam generator humidifier eliminates air contamination caused by mineral deposits. The totally self-contained system includes a quick change, disposable cartridge and automatic flush cycle. Steam generator humidifier option only available when used with the Data Alarm Mini Processor.
ELECTRIC REHEAT
Low-watt density finned tubular sheathed coils are constructed of stainless steel and provide ample capacity to maintain room drybulb conditions on a call for dehumidification. Low-watt density coils eliminate ionization associated with open wire electrical resistance heating. Over-heat switches are provided. Electric reheat is available in 2, 4, or 5 KW capacities, shipped factory installed with high limit cut-out.
LOW AMBIENT CONTROL DAMPER
A low ambient control damper is available for use with ducted outside condenser air. The low ambient control damper kit is field installed and consists of a 16″ x 16″ damper section and head pressure operator. The low ambient control damper allows unit to operate down to -20 degrees F (-28.9 degrees C). The capillary tube connection from the head pressure control to the refrigerant system is connected with a Schrader fitting that allows replacement without affecting the refrigerant charge, making recovery unnecessary.
CONDENSATE PUMPS
Condensate pumps can be provided for field mounting or factory installed and wired. Maximum 8 ft. head. Field installed condensate pumps require either separate 110 or 230 volt power source.
HORIZONTAL, FRONT, SIDE SUPPLY AIR
Units may be ordered with optional horizontal supply air configurations of front or either side. Optional supply air converts unit for ducted supply air connection.
SIDE RETURN AIR
Units may be ordered with optional side return consisting of a factory modified flanged for ducting return air. Optional side return air converts unit for ducted return air connection. An additional option provides ceiling mounted return air filter grille, ceiling mounted return air filter box with hinged grille and filter for duct connection. Filter included with this option is a 20″ x 20″ x 4″ deep, 30% efficient (based on ASHRAE Std. 52-76) MERV 8 pleated filter.
OPTIONS
EXTENDED COMPRESSOR WARRANTIES
Extended compressor warranties are available for periods of twenty-four (24) or forty-two (42) months in addition to the standard factory eighteen (18) month warranty. These warranties are for the replacement of compressors and do not include labor.