38AYC
018–060
60 Hertz
Wiring Diagrams
Fig. 1—38AYC018 (30), 024 (31), 030 (31), 036 (31), 042 (31), 048 (31)
208-230v, 1 Phase, 60 Hertz
A97167
-LEGEND-
FACTORY POWER WIRING
FIELD POWER WIRING
FACTORY CONTROL WIRING
FIELD CONTROL WIRING
CONDUCTOR ON CIRCUIT BOARD
COMPONENT CONNECTION
1/4-INCH QUICK CONNECT
TERMINALS
FIELD SPLICE
JUNCTION
CAP CAPACITOR (DUAL RUN)
*CH CRANKCASE HEATER
*CHS CRANKCASE HEATER SWITCH
COMP COMPRESSOR
CTD COMPRESSOR TIME DELAY
CONT CONTACTOR
-NOTES-
1. Compressor and fan motor furnished with inherent thermal protection.
2. To be wired in accordance with National Electric Code (N.E.C.) and local codes.
3. N.E.C. class 2, 24 V circuit, min. 40 VA required.
4. Use copper conductors only, from disconect to unit.
5. Must use thermostat and sub-base as stated in pre-sale literature.
6. If indoor section has a transformer with a grounded secondary, connect the grounded side to "C" on the
circuit board..
7. If any of the original wire, as supplied, must be replaced, use the same or equivalent wire.
8. Check all electrical connections inside control box for tightness.
9. Do not attempt to operate unit until service valves have been opened.
10. When DTS, LPS and HPS are not required, a jumper will be installed between Y and T1 on the defrost
board.
11. Use conductors suitable for at least 75°C (167°F).
322299-101 REV. F
1. Compressor damage may occur if system is over charged.
2. This unit is factory charged with R-22 in accordance with the amount shown on the rating
plate. The charge is adequate for most systems using matched coils and tubing not over 15
feet long. The best performance will be achieved when the unit operates with a suction gas
superheat at the compressor inlet of 5 °F at normal rating conditions of the air conditioning
and refrigeration institute (ARI). This chart may be used to approximate the charge if ARI
rating conditions cannot be obtained. ARI rating conditions are equivalent to DOE test "A"
conditions. See product data literature for required indoor air flow rates and for use of line
lengths over 15 Ft.
3. Carefully relieve refrigerant pressure within this unit before final disposal.
CAUTION
THIS DEFROST CONTROL BOARD CONTAINS A FIVE MINUTE SHORT CYCLE PROTECTOR. A
FIVE MINUTE DELAY WILL OCCUR BETWEEN COMPRESSOR OFF/ON CYCLES.
FIELD SELECTED TIME PERIOD
BETWEEN DEFROST CYCLES (MINUTES)
JUMPERED TEST PINS (USE METAL OBJECT), FIELD SPEED-UP CYCLE
HEAT CYCLE: 90 MIN. ACCELERATED TO 21 SEC.
50 MIN. ACCELERATED TO 12 SEC.
30 MIN. ACCELERATED TO 7 SEC.
DEFROST CYCLE: 10 MIN. ACCELERATED TO 2 SEC.
90
50
30
NOTE
SCHEMATIC DIAGRAM
(LADDER FORM)
2323
*CH
CONT
DR
OF1 OF2
L2
21
11
CONT
EQUIP
GND
RVS
L1
COMP
OFM
CAP
T2
CONT
C
CTD
T1
*HPS
*DTS
*LPS
C
YY
R
R
W2
O
O
C
DFT
DFT
LOGIC
LOGIC
DR
DR
*SC
1
2
5
*SR
*CHS
H
C
F
*ST
+t°
S
C
R
CONNECTION DIAGRAM
*LPS
*HPS
YEL
BLU or YEL
YEL
CONT
POWER
SUPPLY
EQUIP GND
L1
11
21
23
23
L2
BLK
YEL
YEL
OFM
BLUBLK
*DTS
BLK
YEL
BRN
*CH
BLU
or
YEL
CAP
CYO
W2
REL
W3
G
RW2OYC
OF2
OF1
LOGIC
DFT
C
C
CB
BLK
YEL
ORN
WHT
RED
INDOOR UNIT
TERMINAL BLOCK
CYO
W2
REL G
INDOOR THERMOSTAT (NOTE #5)
T1
R
O
Y
YEL
BLK
T2
LOGIC
BLK
BRN
or
ORN
ORN
or
BLK
RVS
CTD
or
PNK
PNK
or
BLK
DFT
COMP
BLK
BLK
YEL
230 1Ø
BLK
BLK
*CHS
BLK
or
RED
BLK
RED or BLK
BLK
BLU
H
C
F
BRN
YEL
YEL
YEL
S
C
R
*SC
*ST
BRN
BLU
BLU
+t°
1
2
5
*SR
90
50
30
DR
SPEED
UP
SPEED
UP
CB CIRCUIT BOARD
DFT DEFROST THERMOSTAT
DR DEFROST RELAY AND
CIRCUITRY
*DTS DISCHARGE TEMP. SWITCH
*HPS HIGH PRESSURE SWITCH
*LPS LOW PRESSURE SWITCH
OFM OUTDOOR FAN MOTOR
RVS REVERSING VALVE SOLENOID
*SC START CAPACITOR
*SR START RELAY
*ST START THERMISTOR
* MAY BE FACTORY OR FIELD INSTALLED.
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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 5a 5a
PC 101 Catalog No. 563-974 Printed in U.S.A. Form 38AYC-1W Pg 1 6-97 Replaces: New
(28 pages)
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