102777-YIM-E-0206
114
Unitary Products Group
NOTES:
For On/Off functions, 1 is ON and 0 is OFF
Read only items are readings from sensors which only change as the measured condition changes.
SERVICE
REFRIGERATION SYSTEM
CHARGE: Each system is fully factory charged with R-22.
The correct charge appears on the unit nameplate.
Thermal Expansion Valves: The 30 ton unit has 3 and the 40
ton unit has 4 independent refrigeration systems. These
TXVs are set to maintain 15°F superheat leaving the evapo-
rator coil. The superheat on each valve is adjustable, how-
ever, adjustments should only be made if absolutely
necessary.
MOISTURE/LIQUID SIGHT GLASS: Each system has a
moisture/liquid sight glass. These are located on the liquid
lines in the condenser section.
A clear flow of liquid indicates the unit is properly charged.
Any bubbles indicates the system is undercharged or non-
condensables may exist. Corrective action should be taken.
A change in color of the moisture indicator shows the approx-
imate moisture content of the system in parts per million. If
moisture is indicated, corrective action should be taken.
FILTER DRIER: Each system is equipped with a filter drier.
The drier should be replaced whenever moisture is indicated
in the system.
COMPRESSORS
Each compressor is inherently protected from over current
and over temperature. High and low pressure switches are
installed on the discharge and suction lines respectively for
high and low pressure protection. Scroll compressors operate
in only one direction. If the compressor is experiencing low
amperage draw, similar discharge and suction pressure or
increased noise level, it is operating in reverse. Switch two
line voltage connections to correct (See Compressor Rotation
page 63).
MOTORS
INDOOR BLOWER MOTORS
All indoor blower motors are non-inherently protected three
phase motors. Overcurrent protection is provided by a man-
ual reset starter/overload relay and short circuit protection is
provided by fuses.
POWER EXHAUST OR RETURN AIR FAN MOTORS
All motors are non-inherently protected three phase motors.
Overcurrent protection is provided by a manual reset
starter/overload relay and short circuit protection is provided
by fuses.
CONDENSER FAN MOTORS
All condenser fan motors are inherently protected three
phase motors. Short circuit protection is provided by fuses.
DRAFT MOTOR (GAS FURNACE)
All draft motors are line voltage, inherently protected, single
phase PSC motors. Short circuit protection is provided by
fuses.
79
Hot Gas Bypass
ON-OFF
ON-OFF
OFF
80
Compressors
Number
2 to 4
Factory Set
81
Heat Stages
Number
0 to 3
Factory Set
82
Duct Static Reading
Inches Water
0 to 5.0”
Read Only
83
Building Pressure Reading
Inches Water
0 to 5.0”
Read Only
84
Low Ambient Kit Installed
ON-OFF
ON-OFF
Factory Set
85
Building Static Pressure Sensor
Enable
ON-OFF
ON-OFF
Factory Set
86
ERV Installed
ON-OFF
ON-OFF
Factory Set
87
ERV Unoccupied Fan
ON-OFF
ON-OFF
Factory Set
88
Duct Static Shutdown Setpoint
Inches Water
0 to 5.0”
4.5”
TABLE 52: SETTABLE SYSTEM PARAMETERS (Continued)
ADDRESS
FUNCTION
UNIT
RANGE
DEFAULT
YOUR SETTINGS
TABLE 53: SYSTEM MOISTURE INDICATOR
INDICATOR
COLOR
75°
100°
125°
Green (Dry)
Below 30
Below 45
Below 60
Chartreuse
30 - 90
45 - 130
60 - 180
Yellow (Wet)
Above 90
Above 130
Above 180
Summary of Contents for MILLENNIUM Y22
Page 47: ...102777 YIM E 0206 Unitary Products Group 47 FIGURE 20 ALTITUDE TEMPERATURE CONVERSION FACTOR ...
Page 50: ...102777 YIM E 0206 50 Unitary Products Group FIGURE 21 FAN PERFORMANCE 25 TON ...
Page 53: ...102777 YIM E 0206 Unitary Products Group 53 FIGURE 22 FAN PERFORMANCE 30 TON ...
Page 56: ...102777 YIM E 0206 56 Unitary Products Group FIGURE 23 FAN PERFORMANCE 40 TON ...
Page 126: ...102777 YIM E 0206 126 Unitary Products Group FIGURE 52 TYPICAL CONTROL WIRING ...
Page 127: ...102777 YIM E 0206 Unitary Products Group 127 FIGURE 53 LEGEND ...
Page 128: ...102777 YIM E 0206 128 Unitary Products Group FIGURE 54 TYPICAL 25 TON POWER WIRING ...
Page 129: ...102777 YIM E 0206 Unitary Products Group 129 FIGURE 55 TYPICAL 30 40 TON POWER WIRING ...
Page 130: ...102777 YIM E 0206 130 Unitary Products Group FIGURE 56 TYPICAL GAS HEAT WIRING ...
Page 134: ...102777 YIM E 0206 134 Unitary Products Group FIGURE 58 25 TON CHARGING CURVE ...
Page 139: ...102777 YIM E 0206 Unitary Products Group 139 ...