09AW,AZ001-024
Remote Air-Cooled Condenser
Wiring Diagrams
DIAGRAM INDEX
Unit 09
AWH,
AWL
001
002
003
004
AWH,
AWL
006
008
012
AWH,
AWL,
AWV,
AWW
014
016
018
020
AZH
006
AZL
006
AZH,
AZL
008
AZH,
AZL,
AZV,
AZW
012
014
016
UNIT
All
09AZ
with
50BZ
LEGEND
SCHEMATICS
Voltage
60 Hz
208/230, 575
(1 phase)
208/230, 460
(3 phase)
208/230, 575
(1 phase)
208/230, 460
(3 phase)
208/230
(1 phase)
208/230, 460, 575
(3 phase)
208/230, 575
(1 phase)
208/230, 460
(3 phase)
208/230, 575
(1 phase)
208/230, 460
(3 phase)
208/230, 575
(1 phase)
208/230, 460
(3 phase)
208/230
(1 phase)
208/230, 460, 575
(3 phase)
COMPONENT
Head Pressure Control Wiring
Fan Cycling Head Pressure
Control Wiring
Head Pressure Control Operation
Winter Start
Winter Start, Evaporator
Defrost Thermostat
Liquid Line Solenoid Valve
Figure
Number
1
2
3
4
5
6
7
CAP
EQUIP
FB1
FC2
FD1
GND
L
M
MTR
NEC
PB1
TB1
TRAN
—
—
—
—
—
—
—
—
—
—
—
—
—
Capacitor
Equipment
Fused Block
Fan Cycling Control
Fused Disconnect
Ground
Line
Fan Motor Contactor
Fan Motor
National Electrical Code
Power Terminal Block
Terminal Block
Transformer
Terminal Block Connection
Unmarked Terminal
Factory Wiring
Field Wiring
8
9
10
9
10
11
12
NOTES:
1. Wiring for field power supply must be rated at 60 C
(140 F) minimum. Use copper or copper-clad aluminum
conductors only.
2. Replacement of factory wires must be with 90 C (194 F)
appliance wiring material or its equivalent.
3. Factory wiring is in accordance with NEC. Field modifications or additions must be in compliance with all applicable codes.
4. Fan motors are inherently thermally protected. No overloads required.
5. Motor 1 is located on header end of the unit.
6. Field control connections are made to terminal block TB1.
Contactor (when supplied) holding voltage is 24 volts.
FIGURE NUMBER
13-16
15 and 16
17
18
19
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 4
PC 111
Catalog No. 530-905
Printed in U.S.A.
Form 09AW,AZ-1W
Pg 1
2-99
Replaces: New
Tab 4a 4a
SAFETY CONSIDERATIONS
Factory-Installed Optional Controls
Installing, starting up, and servicing this equipment can
be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment.
Untrained personnel can perform basic maintenance functions such as cleaning coils. All other operations should be
performed by trained service personnel.
When working on the equipment, observe precautions in
the literature and on tags, stickers, and labels attached to the
equipment. Follow all safety codes. Wear safety glasses and
work gloves. Use care in handling, rigging, and setting bulky
equipment.
FAN CYCLING HEAD PRESSURE CONTROL — This option allows operations to 30 F (depending on load) by stopping the second condenser fan at outdoor temperatures below 60 F. It is recommended that the second fan on all
2 condenser-fan units be equipped with this option to better
match load to condenser capacity. See Fig. 15-17 for wiring.
HEAD PRESSURE CONTROL — This option contains a
fan speed-control device activated by a pressure sensor. With
the speed control, the condenser-fan motor speed is controlled in response to the saturated condensing pressure. This
factory-installed option maintains the condensing temperature at 100 ± 10° F (38 ± 6° C) for outdoor temperatures
down to −20 F (−29 C).
NOTE: Wind baffle may be required. See Installation
Instructions.
The head pressure control consists of a solid-state circuit
on a printed circuit board, sensor, transformer, and single
phase compatible condenser-fan motor. See Fig. 14-17 for
wiring.
NOTE: The fan cycling head pressure control will be
installed on all 2 condenser-fan units with head pressure
control.
ELECTRIC SHOCK HAZARD
Open all remote disconnects before servicing
this equipment.
SEQUENCE OF OPERATION
The 09AW,AZ condensing unit may be used with different types of compressor and evaporator combinations. The
sequence of operation is dependent on the compressor and
specific indoor unit.
Field-Installed Accessory Controls
DEFROST THERMOSTAT (50BB-900---001) — The defrost thermostat is installed on the evaporator coil and is recommended for use with the winter start control. The thermostat will open the control switch if frost begins to form on
the evaporator coil. The compressor will stop but the 09AW
or 09AZ unit will continue to run. See Fig. 19 for wiring.
SOLENOID VALVE — A field-supplied solenoid valve (locate at indoor unit) wired in parallel with the compressor
contactor coil will shut off the liquid line to prevent refrigerant migration back to the compressor during the off cycle.
This valve is recommended for installations where piping
length is over 75 ft. If 2 liquid line solenoid valves are used
(units over 71⁄2 tons), check available transformer voltampere capability. See Fig. 19 for wiring.
WINTER START (38AE900021) — When used in conjunction with the speed control option, the winter start control
will bypass the low-pressure switch for 3 minutes on compressor start-up to allow system pressures to stabilize.
NOTE: If units matched with 09AW or 09AZ condenser units
are equipped with a 27 psig low-pressure switch (i.e., 50BZ),
the 3-minute low-pressure switch bypass is recommended
for operation below 50 F. See Fig. 18 and 19 for wiring.
General Applications — Whenever there is a call for
cooling, the condenser fan starts with the compressor and
runs as long as there is a call for cooling. On 2 circuit units,
both fans are activated on the call for first stage and run with
the lead compressor.
Application with 50BZ Units — The following control sequence is for the 09AW and 09AZ when matched with
the 50BZ unit.
Cooling — On a call for cooling, the thermostat closes
and energizes terminals Y1 and T1 on the 50BZ unit low
voltage terminal strip. The fan-motor contactor (M) is
energized with 24 v through terminals T1 and C. The fan(s)
will continue to run until the thermostat is satisfied. At that
time, the thermostat will open T1, and the fan will stop
immediately.
If the condenser-fan motor overheats due to motor overload or lack of cooling air, the internal fan protector will
open the circuit internally in the motor, and the fan will stop.
If a safety control in the 50BZ unit opens, the 09AW or 09AZ
condenser fan will not be affected, and the fan will continue
to run as long as the thermostat is closed.
2
POWER SCHEMATIC
CONTACTOR
OPTION
M1
MTR
1
NEC
DISCONNECT
CAP
EQUIP GND
TRANSFORMER
OPTION
24 VAC
TRAN
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
Fig. 1 — Field Wiring, Single Phase; 09AWH,AWL001-004, 208/230 and 575-1-60
POWER SCHEMATIC
OPTIONAL
FUSED
DISCONNECT
CONTACTOR
OPTION
M1
MTR
1
EQUIP GND
24 VAC
TRANSFORMER
OPTION
TRAN
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
Fig. 2 — Field Wiring, Three Phase; 09AWH,AWL001-004, 208/230 and 460-3-60
3
POWER SCHEMATIC
CONTACTOR
OPTION
PB1
M1
MTR
1
NEC
DISCONNECT
CAP
M2
EQUIP GND
MTR
2
CAP
TRANSFORMER
OPTION
24 VAC
TRAN
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
OPTIONAL FAN CYCLING
Fig. 3 — Field Wiring, Single Phase; 09AWH,AWL006-012, 208/230 and 575-1-60
POWER SCHEMATIC
OPTIONAL
FUSED
DISCONNECT
POWER
TERMINAL
BLOCK
CONTACTOR
OPTION
PB1
M1
MTR
1
M2
EQUIP GND
MTR
2
24 VAC
TRAN
TRANSFORMER
OPTION
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
OPTIONAL FAN CYCLING
Fig. 4 — Field Wiring, Three Phase; 09AWH,AWL006-012, 208/230 and 460-3-60
4
POWER SCHEMATIC
CONTACTOR
OPTION
PB1
M1
MTR
1
NEC
DISCONNECT
CAP
M2
EQUIP GND
MTR
2
CAP
TRANSFORMER
OPTION
24 VAC
TRAN
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
OPTIONAL FAN CYCLING
Fig. 5 — Field Wiring, Single Phase; 09AWH,AWL,AWV,AWW014-020, 208/230-1-60
POWER SCHEMATIC
OPTIONAL
FUSED
DISCONNECT
POWER
TERMINAL
BLOCK
CONTACTOR
OPTION
PB1
M1
MTR
1
M2
EQUIP GND
MTR
2
24 VAC
TRAN
TRANSFORMER
OPTION
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
OPTIONAL FAN CYCLING
Fig. 6 — Field Wiring, Three Phase; 09AWH,AWL,AWV,AWW014-020, 208/230, 460, and 575-3-60
5
POWER SCHEMATIC
M1
MTR
1
NEC
DISCONNECT
CAP
EQUIP GND
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
Fig. 7 — Field Wiring, Single Phase; 09AZH006, 208/230 and 575-1-60
POWER SCHEMATIC
OPTIONAL
FUSED
DISCONNECT
M1
MTR
1
EQUIP GND
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
Fig. 8 — Field Wiring, Three Phase; 09AZH006, 208/230 and 460-3-60
6
POWER SCHEMATIC
CONTACTOR
OPTION
PB1
M1
MTR
1
NEC
DISCONNECT
CAP
M2
EQUIP GND
MTR
2
CAP
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
Fig. 9 — Field Wiring, Single Phase; 09AZH008 and 09AZL006,008, 208/230 and 575-1-60
POWER SCHEMATIC
OPTIONAL
FUSED
DISCONNECT
POWER
TERMINAL
BLOCK
PB1
M1
MTR
1
M2
EQUIP GND
MTR
2
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
Fig. 10 — Field Wiring, Three Phase; 09AZH006 and 09AZL006,008, 208/230 and 460-3-60
7
POWER SCHEMATIC
PB1
M1
MTR
1
NEC
DISCONNECT
CAP
M2
EQUIP GND
MTR
2
CAP
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
OPTIONAL FAN CYCLING
Fig. 11 — Field Wiring, Single Phase; 09AZH,AZL,AZV,AZW012-016, 208/230-1-60
POWER SCHEMATIC
POWER
TERMINAL
BLOCK
OPTIONAL
FUSED
DISCONNECT
M1
PB1
MTR
1
M2
EQUIP GND
MTR
2
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
OPTIONAL FAN CYCLING
Fig. 12 — Field Wiring, Three Phase; 09AZH,AZL,AZV,AZW012-016, 208/230, 460, and 575-3-60
8
24 VAC
POWER SCHEMATIC
P66
PRESSURE
CONTROL
L1
*
PB1
M1
M1
MOTOR 1
L1
R
MAIN
L2
C
NEC
DISCONNECT
AUX.
S
CAPACITOR
EQUIP GND
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
*Maximum available va is 40 and can be used to power contactor and indoor unit.
Fig. 13 — Head Pressure Control Wiring, Single Phase; 09AW001-004 and 09AZH006, 208/230 and 575-1-60
9
24 VAC
POWER SCHEMATIC
P66
SPEED
CONTROL
L1
*
PB1
M1
M1
MOTOR
L1
R
MAIN
L2
C
NEC
DISCONNECT
L3
AUX.
S
CAPACITOR
EQUIP GND
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
*Maximum available va is 40 and can be used to power contactor and indoor unit.
Fig. 14 — Head Pressure Control Wiring, Three Phase; 09AW001-004 and 09AZH006, 208/230 and 460-3-60
10
24 VAC
POWER SCHEMATIC
P66
PRESSURE
CONTROL
L1
*
PB1
M1
M1
MOTOR 1
L1
R
MAIN
L2
C
NEC
DISCONNECT
AUX.
S
CAPACITOR
EQUIP GND
MOTOR 2
M2
R
MAIN
C
AUX.
S
CAPACITOR
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
*Maximum available va is 40 and can be used to power contactor and indoor unit.
Fig. 15 — Head Pressure Control and Fan Cycling Head Pressure Control Wiring for Two-Fan Units,
Single Phase; 09AW008-020 and 09AZL006-016, 208/230 and 575-1-60
11
24 VAC
POWER SCHEMATIC
P66
PRESSURE
CONTROL
L1
*
PB1
M1
M1
MOTOR 1
L1
R
MAIN
L2
C
NEC
DISCONNECT
AUX.
L3
S
CAPACITOR
MOTOR 2
M2
EQUIP GND
CONTROL SCHEMATIC
TB1
M1
FROM INDOOR
UNIT (24v)
FC2
M2
*Maximum available va is 40 and can be used to power contactor and indoor unit.
Fig. 16 — Head Pressure Control and Fan Cycling Head Pressure Control Wiring for Two-Fan Units,
Three Phase; 09AW008-020 and 09AZL006-016, 208/230, 460, and 575-3-60
12
JOHNSON CONTROLS
P66 PERFORMANCE CURVE
MOTOR VOLTAGE
97%
90%
10% TO 40%
OF LINE
(AS SPECIFIED)
NO FAN OPERATION
IN THIS
PRESSURE RANGE
ETR
30 TO 60 PSIG
0 PSIG
OPERATING
RANGE
(190/250 PSIG)
OPERATING
RANGE PLUS
20 OR 30 PSI*
350 PSIG
PRESSURE INPUT
OPERATIONAL SEQUENCE
Pressure Input
Motor Voltage (VAC, True RMS)
Pressure Input is Between
0 PSIG and the Low End
0 to 5 Volts
of the Operation Range.
Pressure is at the Low End Start Voltage 10% to 40% of Line
of the Operation Range.
Motor Voltage Varies Directly with
Pressure is in the
System Pressure from Start
Operation Range.
Voltage to 90% of Line Voltage.
Pressure is at the High End Output Voltage is 90% of
of the Operation Range.
Line Voltage.
A Further Pressure Increase of
Pressure is Above the
20 to 30 PSI Will Increase Motor
Operation Range.
Voltage to 97% of the Applied
Voltage.
LEGEND
ETR — Effective Throttling Range
*20 PSI for 30 PSI ETR, 30 PSI for 60 PSI ETR.
NOTES:
1. When using this control on a 3-phase system, the 24-v control circuit and the line voltage must be on the same phase.
2. The P66 is a single-phase control that can only be used with singlephase motors.
Fig. 17 — Head Pressure Control Operation; P66 Performance Curve, Operational Sequence
T
TDR
C
LPS
LEGEND
C
LPS
T
TDR
—
—
—
—
Contactor Coil
Low-Pressure Switch
Time Delay Relay Coil
Time Delay Relay (38AE900021)
Factory Wiring
Field Wiring
Fig. 18 — Wiring for Winter Start Control
(Indoor Unit Wiring Modification)
13
TB2
FIELD THERMOSTAT
NEC CLASS II
R
CONT
BRN
R1†
G
AUTO
COOL
T1
Y1
TC1
X
OFF
C
ORN
LOGIC 3
2
1
TDR1
ORN
RED
2
X
LOGIC 1
CLO1
BRN
3 BLU LPS1 HPS1
BLU
BLU C1 C1 C2
BLU
BRN
C1 CR C2
M1
WIRING
IN 09AZ
CONTROL
BOX
LLS*
DT
TDR
WINTER
START
FC2
T
M2
C1
CLO1
CONT
CR
DT
FC2
M1/M2
HPS1
LLS
—
—
—
—
—
—
—
—
—
Compressor Contactor (in 50BZ)
Cycle-LOC™ Control (in 50BZ)
Continuous Fan
Control Relay (in 50BZ)
Defrost Thermostat (Accessory)
Fan Cycling Control
Motor Contactor (in 09AZ)
High-Pressure Switch (in 50BZ)
Liquid Line Solenoid (Accessory)
LEGEND
LPS1
NEC
R1
T
TB2
TC
TDR
TDR1
—
—
—
—
—
—
—
—
Low-Pressure Switch (in 50BZ)
National Electrical Code
Resistor
Timer
Low-Voltage Terminal Block (in 50BZ)
Thermostat Cooling
Winter Start Control (38AE900021)
Time GuardT Time Delay (in 50BZ)
*Solenoid valve is field-supplied.
†Resistor may be internal to CLO on some models.
Fig. 19 — Wiring for 09AZ Unit with 50BZ Using Winter Start,
Evaporator Defrost Thermostat, and Liquid Line Solenoid Valve
14
Copyright 1999 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 4
PC 111
Catalog No. 530-905
Printed in U.S.A.
Form 09AW,AZ-1W
Pg 16
2-99
Replaces: New
Tab 4a 4a