York D3HH 024, Technical Manual

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036-21187-001 REV A (0301)
4 Unitary Products Group
CORROSION RESISTANT COATINGS - Condenser and/or
evaporator coils shall have a 2 to 3 mil coating of Heresite P-
413 protective coating applied in a multiple dip and bake pro-
cess.
STAINLESS STEEL DRAIN PAN - Evaporator drain pan
shall be fabricated of 304 stainless steel material. The 3/4 in.
NPT drain connection fitting is also of 304 stainless steel.
HOT GAS BYPASS - Adjustable hot gas regulator and all
necessary piping shall be installed on lead compressor cir-
cuit. Bypass capacity shall be minimum 50% of compressor
capacity. The bypass valve opens at a preset suction pres-
sure to prevent coil freeze-up at light evaporator load, or low
airflow conditions. The use of the field installed Low Ambient
Control is strongly recommended when hot gas bypass is
installed.
FIELD INSTALLED ACCESSORIES
LOW AMBIENT CONTROL - Head pressure control damper
kit will allow unit operation down to 0°F ambient. Damper
assembly fits over condenser air intake. The kit includes
damper actuator, and low pressure switch bypass timer(s).
TABLE 1: GENERAL DATA 2 TO 5 TONS
MODEL DHH:
024 036 048 060
NOMINAL COOLING (TONS) 2 3 4 5
COOLING PERFORMANCE
CALCULATED SEER
*
10.5 10.5 10.6 10.4
GROSS COOLING CAPACITY (BTUH) 26600 37200 50300 62700
DESIGN CFM 800 1200 1600 2000
SYSTEM POWER (KW) 2.52 3.85 4.88 6.24
COMPRESSOR-TYPE SCROLL SCROLL SCROLL SCROLL
NUMBER USED 1 1 1 1
EVAPORATOR COIL-TYPE "COPPER TUBES, ALUMINUM FINS"
FACE AREA (SQ FT) 2.44 3.00 4.17 5.14
ROWS/FPI 3/12 3/14 3/14 3/14
REFRIGERANT CONTROL TX VALVE TX VALVE TX VALVE TX VALVE
CONDENSER COIL-TYPE "COPPER TUBES, ALUMINUM FINS"
FACE AREA (SQ FT) 3.75 3.75 6.67 6.67
ROWS/FPI 4/16 4/16 4/14 4/14
EVAPORATOR FAN-TYPE
NUMBER USED 1 1 1 1
DIAMETER x WIDTH (IN) 9x7 10x8 12x9 12x9
DRIVE
MOTOR HP (STANDARD/OVERSIZED) 0.25/0.5 0.5/0.75 0.5/0.75 0.75/1
CONDENSER FAN-TYPE
NUMBER USED 1 1 1 1
DIAMETER x WIDTH (IN) 10x10 10x10 12x11 12x11
DRIVE
MOTOR HP (STANDARD) 0.5 1 1 2
FILTERS
NUMBER USED-SIZE (IN) 1-18x24x2 1-18x25x2 2-16x20x2 2-20x20x2
CONDENSATE CONNECTION
WEIGHT
OPERATING 490 520 765 785
SHIPPING 535 565 820 840
*. Per ARI Standards 210