York HA090 - Operation; Unit Operation; Condensing Unit Only Cooling Capacities and Power Requirements

036-21365-003-D-1105
Unitary Products Group 7
OPERATION
UNIT OPERATION
When the external control calls for cooling at terminal:
1. The system controller (SC) is energized. The system
controller starts the compressor and enables the con-
denser fans by energizing contactor 1M (and 2M on the
208/230 volt models).
Condenser fan motor #1 is energized with the compres-
sor. Fan motor #2 operation is controlled through the
Pressure Switch (PS) which will de-energize the motor
when the discharge pressure falls below 180 PSI.
2. Safety Lockout: The system controller (SC) has a lockout
circuit to prevent compressor short-cycling on a safety
control with automatic reset. If the high or low refrigerant
pressure switches (HP or LP) open, the SC will enter
lockout mode.
TABLE 6: CONDENSING UNIT ONLY COOLING CAPACITIES AND POWER REQUIREMENTS
Model
Suction Press &
Saturation
Temp
Temperature of Air on Condenser Coil, °F
65 75 85 95 105 115
HA120
PSIG °F MBH KW MBH KW MBH KW MBH KW MBH KW MBH KW
61.6 35 128 7.9 122 8.5 116 9.2 110 10 104 11.1 97 12.2
68.5 40 139 8 133 8.7 127 9.4 120 10.3 114 11.3 107 12.3
76 45 151 8.3 144 8.9 138 9.6 131 10.5 124 11.4 117 12.5
84 50 163 8.5 156 9.1 149 9.9 142 10.7 134 11.7 127 12.7
FIGURE 2 - FIELD WIRING - HA120/LA120
R
BY1
R
B Y
O
W
X
53 G
60 66
RY
G
TB2
THERMOSTAT
GROUND
LUG
3-PHASE
LINE VOLTAGE
POWER SUPPLY
24
VOLT
The field wiring connected to these
dummy terminals on TB2 can be
routed directly from the condensing
unit to the thermostat if desired.
TERMINALS ON
BLOCK TB1 OF
BLOWER UNIT
FACTORY MOUNTED
PIGT AILS ON
TERMINALS OF
COMPRESSOR
CONTACTOR 1M
NOTE
:
USE COPPER
CONDUCTORS ONLY
WIRE IN ACCORDANCE WITH
ALL LOCAL AND NATIO NAL
ELECTRICAL CODES
S IZEPOWERWIRING,
DI SCONNECT SWI TCH, AND
FUSI NG PER ELECTI RICAL
DATA TABLE
NOTE: SEE PN# 036-13335-002
FOR APPLICABLE THERMOSTATS.
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