Specifications

39
GUIDE SPECIFICATIONS, continued
on all three power lines, internal thermostats for winding protection, crankcase heater, sight-glass, condenser with sub-cooling, and
2-way water regulating valve for head pressure control. The fi lter drier shall be of the fl are fi tting type for non-torch servicing.
The circuit shall contain high and low pressure safety switches. The high and low pressure safety switches shall be installed with
shraeder type fi ttings with valve core.
Each system shall include a low profi le, slow speed, direct drive propeller fan type air cooled fl uid cooler. Air discharge shall
be vertical to prevent wind from blowing through the coil at low ambient temperatures. The fl uid cooler shall be constructed of
aluminum and contain a
1
/2” O.D. copper tube coil with corrugated aluminum fi ns for maximum heat transfer. The fan motors
shall have cycling controls provided on fl uid coolers with multiple fan motors. The fl uid cooler shall include a surge tank and fi ll
valve, pump contactor and fan cycling controls with an integral factory wired and tested control panel. The fl uid cooler shall be
manufactured by the manufacturer of the indoor unit.
Blower Section
The blower section shall be belt driven centrifugal type, double width, double inlet and shall be statically and dynamically balanced
at the factory as a complete assembly to a maximum vibration level of two mills in any plane.
The blower wheel shall be supported on a heavy steel shaft having self-aligning ball bearings with a minimum life span of 100,000
hours. The blower wheel shall be driven by a motor mounted on an adjustable slide base. The drive motor shall 1750 rpm. The
drive package shall be belt driven with two (2) belts and variable pitch sheave sized for 200% of the fan motor horsepower. The
blower shall be located to draw air over the coil to insure even air distribution and maximum coil performance.
Filter Chamber
The fi lter chamber shall be an integral part of the system, designed within the frame and cabinet. The fi lters shall be four inch (4”)
deep pleated design, rated not less than 30 percent effi cient (based on ASHRAE Std. 52.1-1992).
Electric Reheat
The reheat shall be of the fi nned enclosed, sheath type, fabricated of stainless steel core sheath with plated fi ns to
withstand moist conditions. The reheat shall be installed on the air discharge side of the cooling coil and shall have three (3) stages.
Each stage shall be 5 kW. The total kW shall be 15 to operate on a supply of ___ volts.
Humidifi er
The unit shall be provided with steam generator type humidifi er. The steam generating humidifi er shall be of the self-contained
disposable cylinder type with electronic controls. The capacity shall be 10 pounds per hour. Power consumption shall be 3.2 kW.
The humidifi er shall discharge pure steam with no material dust carry-over and have a self-regulating automatic fl ush cycle. Cyl-
inders shall be disposable not requiring cleaning or maintenance. The humidifi er fi ll level, water conductivity and fl ush rate shall
automatically adapt, both in frequency and duration, to variations in the incoming water.
Water Sensor
Units shall be provided with one (1) water sensor. The solid state water sensor shall be mounted under the unit to sense the
presence of water. The sensor shall be connected to the microprocessor panel and activate an audible alarm. The water detector
shall become an integral part of the microprocessor panel and shall display “Water Detected in Under Floor Area” when sensor
is activated.