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WIRING DIAGRAM
SCHEMATIC DIAGRAM
GND
BR
Y/BL
R
Y
SUCTION
R C Y1Y2
PRESSURE
COIL
TEMP.
SUCTION
TEMP.
EXV
MOTOR
SS SH1 SH2
Y/BL
BR
R
Y
SUCTION
R C Y1Y2
PRESSURE
COIL
TEMP.
SUCTION
TEMP.
EXV
MOTOR
SS SH1 SH2
7.11 CONDENSATE DRAIN TUBING
Consult local codes or ordinances for specific requirements.
IMPORTANT: When making drain fitting connections to the drain pan, use a thin layer of
Teflon paste, silicone or Teflon tape and install hand tight.
IMPORTANT: When making drain fitting connections to drain pan, do not overtighten.
Overtightening fittings can split pipe connections on the drain pan.
• Install drain lines so they do not block service access to front of the unit. Minimum
clearance of 24 inches is required for filter, coil or blower removal and service access.
• Make sure unit is level or pitched slightly toward primary drain connection so that
water will drain completely from the pan. (See Figure 3.)
• Do not reduce drain line size less than connection size provided on condensate drain
pan.
FIGURE 35
CONDENSATE DRAIN TRAP
• All drain lines must be pitched downward away from the unit a minimum of 1/8" per
foot of line to ensure proper drainage.
• Do not connect condensate drain line to a closed or open sewer pipe. Run conden-
sate to an open drain or outdoors.
• The drain line should be insulated where necessary to prevent sweating and damage
due to condensate forming on the outside surface of the line.
NOTES
1.....
CONNECTORS SUITABLE FOR USE WITH COPPER CONDUCTORS
ONLY.
2.....
LOW VOLTAGE CIRCUIT TO BE N.E.C. CLASS 2 WITH A CLASS 2
TRANSFORMAER 24 VOLT, 50 OR 60 HZ. MIN 18 AWG.
3.....
TO THERMOSTAT, REFER TO SYSTEM SCHEMATICS OR
SCHEMATICS ON FURNACE FOR LOW VOLTAGE CONTROL
WIRING.
COMPONENT CODES
CLOSE..............................YELLOW LED
COIL TEMP.......................COIL INLET THERMISTER CONNECTION
COMP...............................COMPRESSOR
EXV (5 PIN).......................ELEC. TX VALVE
ODF...................................OUTDOOR FAN CONNECTION
OPEN................................GREEN LED
SH1...................................SUPERHEAT OFFSET SWITCH 1
SH2....................................SUPERHEAT OFFSET SWITCH 2
SS......................................EXV STEP SELECTION (MUST REMAIN OFF)
STATUS..............................RED LED
SUCTION PRESSURE.......SUCTION PRESS. TRANSDUCER CONN.
SUCTION TEMP. ...............VAPOR LINE THERMISTOR CONN.
TM ......................................THERMISTOR
RVS.....................................REVERSING VALVE CONN.
WIRING INFORMATION
LINE VOLTAGE
-FACTORY STANDARD
-FACTORY OPTION
-FIELD INSTALLED
LOW VOLTAGE
-FACTORY STANDARD
-FIELD INSTALLED
REPLACEMENT WIRE
-MUST BE THE SAME SIZE AND TYPE
OF INSULATION AS ORIGINAL (105C. MIN.)
WARNING
-CABINET MUST BE PERMANENTLY GROUNDED
AND CONFORM TO I.E.C., N.E.C., C.E.C.,
NATIONAL WIRING REGULATIONS, AND LOCAL
CODES AS APPLICABLE.
WIRE COLOR CODE
BK......BLACK
G........GREEN
PR......PURPLE
BR......BROWN
G Y ......GRAY
R........RED
BL.......BLUE
O........ORANGE
W .......WHITE
Y ........YELLOW
ELECTRICAL WIRING
DIAGRAM
NON-COMMUNICATING
STANDALONE
EXV CONTROL W/
PRESSURE TRANSDUCER
PART NO.:
REV:
90-101897-09
00
ST-A1244-01-01
39
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