Mini Plus Ceiling Unit
Engineered for ducted installation in above ceiling applications
CONTROL SYSTEM
Standard units are shipped with a thermostat and sub-base for remote wall mounting. An optional wall mounted microprocessor is available (See Mini Data Alarm Processor-II Options Section).
ELECTRICAL
All electrical components including capacitors, relays, and control transformers are pre-wired. Each unit is provided with a microswitch to prevent condensate pan overflow. The microswitch will disable the unit prior to pan overflow should the drain line become plugged with debris.
ELECTRIC REHEAT
6 kW reheat is standard on 2.5 through 4 ton Mini-Plus units (5 ton Mini-Plus units have 6 kW reheat on single phase and 12 kW reheat on three phase). Electric reheat is accomplished with low watt, low density finned tube fabricated of stainless steel core sheath with plated fins to withstand moist conditions. Reheat is installed on the air discharge side of the cooling coil and provides ample capacity to maintain room drybulb conditions during dehumidification. Low-watt density coils eliminate ionization associated with open air electric resistance heating.
CABINET
Mini-Plus indoor sections are constructed with tubular steel frames for strength and service access. Removable galvanized steel panels are lined with 1 inch thick, 1-1/2 pound density insulation for quiet and efficient operation. An integral filter section with 2″ filters is standard.
AIR COOLED – PACKAGED SYSTEM
Evaporator Section – The evaporator section is a draw-through type with double width, double inlet blower with belt drive and variable pitch sheave. The self-aligning ball bearings are rated for a minimum life of 100,000 hours. The evaporator coil is constructed of copper tubes and aluminum fins. The single stage refrigeration circuit includes an expansion valve with external equalization. A stainless steel drain pan is standard. Field supplied return and supply air ductwork is required for all Mini-Plus evaporator section.
Condensing Unit Section – The attached condensing unit contains a scroll compressor with crankcase heater, filter drier, sight glass, and condenser coil. The condenser coil is constructed with copper tubes and aluminum fins. The condenser blower is double inlet, double width with belt drive and variable pitch sheave.
AIR COOLED – SPLIT SYSTEM with INDOOR CONDENSING UNIT
Evaporator Section – The evaporator section is a draw-through type with double width, double inlet blower with belt drive and variable pitch sheave. The self-aligning ball bearings are rated for a minimum life of 100,000 hours. The evaporator coil is constructed of copper tubes and aluminum fins. The expansion valve with external equalization is contained in the evaporator section.. A stainless steel drain pan is standard. Field supplied return and supply air ductwork is required for all Mini-Plus evaporator sections.
Condensing Unit – The condensing unit contains a scroll compressor with crankcase heater, filter drier, sight glass, and condenser coil. The condenser coil is constructed with copper tubes and aluminum fins. The condenser blower is double inlet, double width with belt drive and variable pitch sheave. Field piping and wiring is required between the indoor evaporator and condensing unit sections.
AIR COOLED – SPLIT SYSTEM with INDOOR CONDENSER
Evaporator/Compressor Section – The evaporator section is a draw through type with double width, double inlet blower with belt drive and variable pitch sheave. The self-aligning ball bearings are rated for a minimum life of 100,000 hours. The evaporator coil is constructed of copper tubes and aluminum fins. The expansion valve with external equalization is contained in the evaporator section. A stainless steel drain pan is standard. The condensing section is contained in a “side car” and attached to the evaporator section.
The condensing section – includes a scroll compressor with crankcase heater, filter drier and sight glass. Field supplied return and supply air ductwork is required for all Mini-Plus evaporator sections. Condenser Section The condenser section includes a condenser coil and condenser blower. The condenser coil is constructed of copper tubes and aluminum fins. The blower is double inlet, double width with belt drive and variable pitch sheave. Field piping and wiring is required between the indoor evaporator/compressor and the condenser sections.
AIR COOLED – SPLIT SYSTEM with OUTDOOR CONDENSING UNIT
Evaporator Section – The evaporator section is a draw-through type with double width, double inlet blower with belt drive and variable pitch sheave. The self-aligning ball bearings are rated for a minimum life of 100,000 hours. The evaporator coil is constructed of copper tubes and aluminum fins. The single stage refrigeration circuit includes an expansion valve with external equalization. A stainless steel drain pan is standard. Field supplied return and supply air ductwork is required for all Mini-Plus evaporator section.
Outdoor Condensing Unit – The condensing unit contains a scroll compressor with crankcase heater, filter drier, sight glass, and condenser coil. The condenser coil is constructed with copper tubes and aluminum fins. The galvanized steel housing and fan guard powder coated for longer life. The energy efficient condenser fan is thermally protected. Air discharge is vertical. The condenser fan is variable speed for head pressure control to -20° F ambient conditions. Field piping and wiring is required between the indoor evaporator section and the outdoor condensing unit.
AIR COOLED – SPLIT SYSTEM with OUTDOOR CONDENSER
Evaporator/Compressor Section The evaporator section is a draw through type with double width, double inlet blower with belt drive and variable pitch sheave. The self-aligning ball bearings are rated for a minimum life of 100,000 hours. The evaporator coil is constructed of copper tubes and aluminum fins. The expansion valve with external equalization is contained in the evaporator section. A stainless steel drain pan is standard.
The compressor section is contained in a “side car” and attached to the evaporator section and includes a scroll compressor with crankcase heater, filter drier and sight glass. Field supplied return and supply air ductwork is required for all Mini-Plus evaporator sections.
Outdoor Condenser Section The outdoor condenser includes a condenser coil, integral factory wired panel and condenser fan motor. The condenser coil is constructed of copper tubes and aluminum fins. The thermally protected fan motor is variable speed for head pressure control to -20° F ambient conditions. The galvanized steel housing is powder coated for longer life. Field piping and wiring is required between the indoor evaporator/compressor and the condenser sections.
WATER COOLED – PACKAGED SYSTEM
Evaporator Section – The evaporator section is a draw-through type with double width, double inlet blower with belt drive and variable pitch sheave. The self-aligning ball bearings are rated for a minimum life of 100,000 hours. The evaporator coil is constructed of copper tubes and aluminum fins. The single stage refrigeration circuit includes an expansion valve with external equalization. A stainless steel drain pan is standard. Field supplied return and supply air ductwork is required for all Mini-Plus evaporator section.
Compressor Section – The attached compressor section includes a scroll compressor with crankcase heater, filter drier, sight glass, coaxial condenser and head pressure water regulating valve. Maximum water pressure is 150 psi. A dry cooler (fluid cooler) or water cooling source is required on water cooled systems.
WATER COOLED – SPLIT SYSTEMS
For applications with space restrictions water cooled systems may be ordered as split systems. The evaporator section and compressor sections (see Water Cooled – Packaged Systems) are shipped separately. Field piping and wiring is required between the evaporator and compressor sections. Field supplied return and supply air ductwork is required for all Mini-Plus evaporator sections. A dry cooler (fluid cooler) or water cooling source is required on water cooled systems.
CHILLED WATER SYSTEMS
Blower Section/Coil Section – The blower section contains a double width, double inlet blower with belt drive and a variable pitch sheave and blower motor. The self-aligning ball bearings are rated for a minimum life of 100,000 hours. The chilled water coil and chilled water valve are housed in the blower section as well. The chilled water coil is constructed of copper tube and aluminum fins. Utilizing chilled water from an existing chilled water loop, water flow is controlled by a 2-way valve for accurate and economical temperature control and dehumidification. The drain pan is constructed from stainless steel. Field supplied return and supply air ductwork is required for all Mini-Plus blower sections.
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.
