Specifications

62 InRow™ Direct Expansion Air Conditioners Technical Specifications 990-4617
E. NETWORK MANAGEMENT CARD
1. The unit shall include a network management card to provide management through a computer
network through TCP/IP. Management through the network should include the ability to change set
points as well as view and clear alarms.
F. COOLING COIL AND CONDENSATE PAN
1. ACRD100 and ACRD200 series Direct Expansion: The cooling coil shall use corrugated
aluminum fin and copper tube coils. The coil header is equipped with a drip plate in the bottom to
capture and direct the condensation accumulating on the suction header tube to the drain pan.
2. ACRD500/ACRP100 Direct Expansion: Cooling coil shall use raised lance type corrugated
aluminum fin and 1/2 inch OD (12.7 mm) copper tube coils. Fin shall be a minimum of 0.0055 inch
thick. Tube wall shall be a minimum of 0.016 inch thick wall. Coil end supports shall be a
minimum 18 gauge G90 galvanized steel. Coil shall be rated for a maximum pressure of 500 psig
(3447.3 kPa), and the coils are certified in accordance with UL207. Coil header is equipped with a
drip plate in the bottom to capture and direct the condensation accumulating on the suction header
tube to the drain pan. Coil has 6 circuits complete with brass distributor and copper distribution
tubes.
G. COMPRESSORS (ACRD500/ACRP100 series only)
1. Variable Speed Compressor/VFD Assembly (ACRD500/ACRP100 series)
a. Compressor: The unit shall be configured with a variable speed reciprocating hermetic
compressor using a matched VFD. As a result, the compressor speed can be varied through a
range between 30 and 85 Hz to accommodate varying load conditions. VFD firmware is
written to include oil return protection in cases where pipe velocities may drop to low speeds
during low loading periods.
b. Compressor is electrically protected through the VFD.
c. Compressor utilizes a noise cap for noise reduction.
d. Sight glass provided for air cooled system oil charging.
2. Scroll Compressor (ACRD100 series and ACRD200 series only)
a. The high EER and few moving parts of scroll compressors shall provide efficient and reliable
operation. Scroll technology has unparalleled ability to withstand liquid refrigerant “slugging,”
which is a major cause of compressor failure.
H. CONDENSATE PUMP
1. ACRD100 series and ACRD200 series: factory installed and wired condensate pumps shall pump
at 34 l/h (9 g/hr) at 4.9 m (16 ft) of head. Each pump shall have dual internal floats.
2. ACRD500 series: A single factory installed and wired condensate pump shall pump at
32 l/h (8.45 g/hr) at 3.5 m (11.5 ft) of head. The pump shall have dual internal floats.
I. CONDENSATE RESERVOIR
1. Each pump shall have a condensate reservoir made of polymeric materials to prevent corrosion.