Allied 4AC16L User manual

508228-01 Issue 2136 Page 1 of 41
SERVICE MANUAL
4AC16L/14LB
(P) 508228-01
*P508228-01*
Table of Contents
Technical Specications - 4AC16L ..............................2
Technical Specications - 4AC14B..............................5
Technical Specications - 4AC14*P-10 .......................8
Technical Specications - 4AC14*P-6 thru 7.............10
Refrigerant Metering Device - Indoor Coil .................14
Installation .................................................................14
Refrigeration Piping...................................................17
Electrical Wiring.........................................................26
Sequence of Operation..............................................30
Start-Up .....................................................................30
Maintenance..............................................................31
Wiring Diagram..........................................................33
Servicing Units Void of Charge..................................35
System Refrigerant....................................................35
Charge Labels ...........................................................38
Start-Up and Performance Checklist.........................41
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in manuals, be alert to
the potential for personal injury or death.
Electric shock hazard.
Can cause injury or death. Before attempting
to perform any service or maintenance,
turn the electrical power to unit OFF at
disconnect switch(es). Unit may have
multiple power supplies.
WARNING
As with any mechanical equipment, contact with sharp
sheet metal edges can result in personal injury. Take
care while handling this equipment and wear gloves
and protective clothing.
CAUTION
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer (or
equivalent), service agency or the gas supplier.
WARNING

508228-01Issue 2136Page 2 of 41
Technical Specications - 4AC16L
MODEL NUMBER GUIDE
PHYSICAL AND ELECTRICAL DATA
Model Voltage/Hz/Phase Voltage
Range
Min.
Circuit
Amp.
Max. Over
Current
Device
(amps)
Compressor Fan Motor
Rated
Load
(amps)
Locked
Rotor
(amps)
Rated
Load
(amps)
Rated HP Nom.
RPM
4AC16L18P-50 208-230/60/1 197-253 11.9 20 9.0 48 0.7 1/10 1075
4AC16L24P-50 208-230/60/1 197-253 14.6 25 10.9 59 1.0 1/6 825
4AC16L30P-50 208-230/60/1 197-253 17.0 25 12.8 68 1.0 1/6 825
4AC16L36P-50 208-230/60/1 197-253 18.0 30 13.6 79 1.0 1/6 825
4AC16L41P-50 208-230/60/1 197-253 19.3 30 14.7 75 1.0 1/6 825
4AC16L42P-50 208-230/60/1 197-253 23.4 40 17.9 112 1.0 1/6 825
4AC16L47P-50 208-230/60/1 197-253 21.9 35 16.1 106 1.8 1/3 825
4AC16L48P-50 208-230/60/1 197-253 24.2 40 18.0 117 1.7 1/4 825
4AC16L59P-50 208-230/60/1 197-253 28.2 45 20.8 127 2.8 1/3 V Spd
4AC16L60P-50 208-230/60/1 197-253 29.6 50 22.2 128 1.8 1/3 825
UNIT DIMENSIONS (IN.)
Model No.
Dimensions Shipping
Weight
(lbs.)
A - width B - depth C - Height
4AC16L18P-50 24.25 24.25 29.00 134
4AC16L24P-50 28.25 28.25 29.00 154
4AC16L30P-50 28.25 28.25 37.00 169
4AC16L36P-50 28.25 28.25 29.00 181
4AC16L41P-50 28.25 28.25 37.00 192
4AC16L42P-50 28.25 28.25 37.00 211
4AC16L47P-50 32.25 32.25 33.00 231
4AC16L48P-50 28.25 28.25 37.00 218
4AC16L59P-50 32.25 32.25 43.00 253
4AC16L60P-50 32.25 32.25 43.00 226
Note:
Weights listed are unit weights with packaging
Dimensions listed are unit sizes w/o packaging
Minor Revision Code
Major Revision Code
50 = Omniguard®
Electrical
P - 208 - 230v/60hz/1Ph
Tonnage
18, 24, 30, 36, 41, 42, 47, 48, 59, 60
Refrigerant
4 = R410A
AC
Air Conditioner
SEER
16
Tier
L = Louvered
4 AC 16 L 24 P - 50 A

508228-01 Issue 2136 Page 3 of 41
SOUND RATINGS
Model Sound Power1
Estimated Sound Pressure (dBA)2
Approximate Distance3
3.3 Feet
(1 Meter)
6.6 Feet
(2 Meters)
9.8 Feet
(3 Meters)
4AC16L18P-50
73 65 59 55
4AC16L24P-50
76 68 62 58
4AC16L30P-50
76 68 62 58
4AC16L36P-50
76 68 62 58
4AC16L41P-50
74 66 60 56
4AC16L42P-50
76 68 62 58
4AC16L47P-50
80 72 66 62
4AC16L48P-50
78 70 64 60
4AC16L59P-50
77 69 63 59
4AC16L60P-50
80 72 66 62
1 Rated in accordance with AHRI standard 270 (2015). AHRI Standard 270 establishes a method of rating outdoor unitary equipment in terms of
Sound Power.
2 Rated in accordance with AHRI standard 275 (2010). AHRI Standard 275 provides the calculations for estimating the A-Weighted Sound Pressure
at a given distance from the equipment. That is a more useful number because that is what humans will hear.
3 Based only on distance factor; other factors may change this value such as:
- Unit location (reective surfaces adjacent to the unit)
- Barrier shielding sources
- Sound path/elevation
- Outside noise sources
ACCESSORIES
System Accessory Where Used Kit Number Purpose
Liquid Line Solenoid All models 60M52 Prevents liquid migration to the compressor especially for high liquid riser applications
Low Ambient (cooling operation) All models 34M72 Enables cooling demand down to 30 °F. Will require freeze stat, CC heater and TXV
Compressor Short Cycle Protector All models 47J27 Delays compressor start 5-7 minutes to prevent short cycling
Hard Start
18 10J42 Scroll compressors usually do not require hard start; maybe needed for utility brown-
out or low voltage areas
24 thru 60 88M91
Crankcase Heater
18, 24, 30, 36 93M04
Prevents liquid migration to compressor in cold weather41, 42 93M05
47, 48, 59, 60 Factory Installed
Sound Cover
18, 24, 30, 36, 41 14W00
Lowers compressor sound level
42, 47, 48, 59, 60 14W01
Loss of Charge Kit All models 84M23 Protects the compressor if refrigerant charge is too low
Additional System Accessories (indoor section)
TXV Kit
18, 24, 30 H4TXV01
TXVs provide superior refrigerant ow control, comfort and e󰀩ciency compared to
pistons
36, 41, 42, 47, 48 H4TXV02
59, 60 H4TXV03
Outdoor Thermostat - Electric Heat All models 10Z23 Prevents electric heat operation above specic ambient conditions
Outdoor Thermostat - Mounting Box All models 31461 Mounting box for outdoor thermostat
Freezestat All models 93G35 Protects the compressor at low suction pressure conditions
Overow Switch All models 11U75 Turn the system o󰀨, if condensate water overows due to clogged drain pipes
Blower Time Delay All models 58M81 Improves system e󰀩ciency and comfort
Single Point Power Supply All models 21H39 Provide single power source in one junction box
Auxiliary Blower Relay All models 85W66 Maybe required to select multiple indoor blower speeds

508228-01Issue 2136Page 4 of 41
REFRIGERATION DATA
Outdoor Model Charge
(oz) 6
Refrigerant Connection
Refrigerant Line Size Indoor Expansion
Device
Outdoor Indoor (DTC) 7
Suction Liquid Suction Liquid Suction Liquid Piston TXV 1
4AC16L18P-50 73 3/4 3/8 3/4 3/8 3/4 3/8 0.052 H4TXV01
4AC16L24P-50 73 3/4 3/8 3/4 3/8 3/4 3/8 0.060 H4TXV01
4AC16L30P-50 88 3/4 3/8 3/4 3/8 3/4 3/8 0.067 H4TXV01
4AC16L36P-50 113 7/8 3/8 7/8 3/8 7/8 3/8 0.072 H4TXV02
4AC16L41P-50 144 7/8 3/8 7/8 3/8 7/8 3/8 † H4TXV02
4AC16L42P-50 140 7/8 3/8 7/8 3/8 7/8 3/8 0.081 H4TXV02
4AC16L47P-50 176 7/8 3/8 7/8 3/8 7/8 3/8 † H4TXV02
4AC16L48P-50 156 7/8 3/8 7/8 3/8 7/8 3/8 0.083 H4TXV02
4AC16L59P-50 189 7/8 ** 3/8 7/8 3/8 1-1/8 3/8 † H4TXV03
4AC16L60P-50 192 7/8 ** 3/8 7/8 3/8 1-1/8 3/8 0.097 H4TXV03
*Factory charged for 15 feet of line set
** Adapter shipped with unit
† TXV only
COOLING PERFORMANCE WITH DTC1
Outdoor Model Indoor Model Capacity
(BTUH) EER SEER
4AC16L18P-50 EAC4X24B 18,000 12.20 14.00
4AC16L24P-50 EAC4X24B 24,000 12.20 14.25
4AC16L30P-50 EAC4X30B 28,400 12.20 14.00
4AC16L36P-50 EAC4X36B 34,000 12.20 14.25
4AC16L41P-50 EAC4X49C 38,000 12.20 14.00
4AC16L42P-50 EAC4X49C 40,000 12.20 14.00
4AC16L47P-50 EAC4X60C 46,000 12.20 14.00
4AC16L48P-50 EAC4X60C 46,000 12.20 14.00
4AC16L59P-50 EAC4X60C 56,000 11.70 14.00
4AC16L60P-50 EAC4X60C 58,000 11.70 14.00
1 DTC = Designated Tested Combination
NOTE:
For the latest ratings, please see
www.alliedratings.com or www.AHRIdirectory.org

508228-01 Issue 2136 Page 5 of 41
MODEL NUMBER GUIDE
PHYSICAL AND ELECTRICAL DATA
Model Voltage/Hz/
Phase
Voltage
Range
Min.
Circuit
Amp.
Max. Over
Current
Device
(amps)
Compressor Outdoor Fan Motor
Rated
Load
(amps)
Locked
Rotor
(amps)
Rated
Load
(amps)
Rated
HP
Nom.
RPM
4AC14B18P-50 208-230/60/1 197-253 11.9 20 9.0 48 0.7 1/10 1075
4AC14B24P-50 208-230/60/1 197-253 14.6 25 10.9 59 1.0 1/6 825
4AC14B30P-50 208-230/60/1 197-253 17.0 25 12.8 68 1.0 1/6 825
4AC14B36P-50 208-230/60/1 197-253 18.0 30 13.6 79 1.0 1/6 825
4AC14B42P-50 208-230/60/1 197-253 23.4 40 17.9 112 1.0 1/6 825
4AC14B48P-50 208-230/60/1 197-253 24.2 40 18.0 117 1.7 1/4 825
4AC14B60P-50 208-230/60/1 197-253 29.6 50 22.2 128 1.8 1/3 825
UNIT DIMENSIONS (IN.)
Model
Dimensions (inch) Shipping
Weight
(lbs.)
A - Width B - Depth C - Height
4AC14B18P-50 24.25 24.25 29.00 155
4AC14B24P-50 28.25 28.25 29.00 171
4AC14B30P-50 28.25 28.25 37.00 187
4AC14B36P-50 28.25 28.25 29.00 205
4AC14B42P-50 28.25 28.25 37.00 234
4AC14B48P-50 28.25 28.25 37.00 255
4AC14B60P-50 32.25 32.25 43.00 284
Note:
Dimensions listed are unit sizes w/o packaging
Weights listed are units weights with packaging.
Technical Specications - 4AC14B
Minor Revision Code
Major Revision Code
50 = Omniguard®
Electrical
P - 208 - 230v/60hz/1Ph
Tonnage
18, 24, 30, 36, 42, 48, 60
Refrigerant
4 = R410A
AC
Air Conditioner
SEER
14
Tier
B = Wire Guard
4 AC 14 B 24 P - 50 A

508228-01Issue 2136Page 6 of 41
ACCESSORIES
System Accessory Where Used Kit Number Purpose
Liquid Line solenoid All models 60M52 Prevents liquid migration to the compressor especially for high liquid riser applications
Low ambient (cooling operation) All models 34M72 Enables cooling demand down to 30 °F. Will require freeze stat, CC heater and TXV
Compressor Short Cycle protector All models 47J27 Delays compressor start 5-7 minutes to prevent short cycling
Hard Start
18 10J42 Scroll compressors usually do not require hard start; maybe needed for utility brown-
out or low voltage areas
24 thru 60 88M91
Crankcase Heater
18, 24, 30, 36 93M04
Prevents liquid migration to compressor in cold weather
42 93M05
48, 60 Factory
Installed
Sound Cover
18, 24, 30, 36 14W00
Lowers compressor sound level
42, 48, 60 14W01
Loss of Charge Kit All models 84M23 Protects the compressor if refrigerant charge is too low
Additional System Accessories (indoor section)
TXV Kit
18, 24, 30 H4TXV01
TXVs provide superior refrigerant ow control, comfort and e󰀩ciency compared to
pistons
36, 42, 48 H4TXV02
60 H4TXV03
Outdoor Thermostat - electric heat All models 10Z23 Prevents electric heat operation above specic ambient conditions
Outdoor Thermostat - mounting box All models 31461 Mounting box for outdoor thermostat
Freezestat All models 93G35 Protects the compressor at low suction pressure conditions
Overow switch All models 11U75 Turn the system o󰀨, if condensate water overows due to clogged drain pipes
Blower time delay All models 58M81 Improves system e󰀩ciency and comfort
Single point power supply All models 21H39 Provide single power source in one junction box
Auxiliary blower relay All models 85W66 Maybe required to select multiple indoor blower speeds
SOUND RATINGS
Model Sound Power1
Estimated Sound Pressure (dBA)2
Approximate Distance3
3.3 Feet
(1 Meter)
6.6 Feet
(2 Meters)
9.8 Feet
(3 Meters)
4AC14B18P-50 73 65 59 55
4AC14B24P-50 76 68 62 58
4AC14B30P-50 76 68 62 58
4AC14B36P-50 76 68 62 58
4AC14B42P-50 76 68 62 58
4AC14B48P-50 78 70 64 60
4AC14B60P-50 80 72 66 62
1 Rated in accordance with AHRI standard 270 (2015). AHRI Standard 270 establishes a method of rating outdoor unitary equipment in terms of
Sound Power.
2 Rated in accordance with AHRI standard 275 (2010). AHRI Standard 275 provides the calculations for estimating the A-Weighted Sound Pressure
at a given distance from the equipment. That is a more useful number because that is what humans will hear.
3 Based only on distance factor; other factors may change this value such as:
- Unit location (reective surfaces adjacent to the unit)
- Barrier shielding sources
- Sound path/elevation
- Outside noise sources

508228-01 Issue 2136 Page 7 of 41
REFRIGERATION DATA
Outdoor Model Charge
(oz) 6
Refrigerant Connection
Refrigerant Line Size Indoor Expansion
Device
Outdoor Indoor (DTC) 7
Suction Liquid Suction Liquid Suction Liquid Piston TXV 1
4AC14B18P-50 73 3/4 3/8 3/4 3/8 3/4 3/8 0.052 H4TXV01
4AC14B24P-50 73 3/4 3/8 3/4 3/8 3/4 3/8 0.060 H4TXV01
4AC14B30P-50 88 3/4 3/8 3/4 3/8 3/4 3/8 0.067 H4TXV01
4AC14B36P-50 113 7/8 3/8 7/8 3/8 7/8 3/8 0.072 H4TXV02
4AC14B42P-50 140 7/8 3/8 7/8 3/8 7/8 3/8 0.081 H4TXV02
4AC14B48P-50 156 7/8 3/8 7/8 3/8 7/8 3/8 0.083 H4TXV02
4AC14B60P-50 192 7/8 ** 3/8 7/8 3/8 1-1/8 3/8 0.097 H4TXV03
* Factory charged for 15 feet of line set
** Adapter shipped with unit
COOLING PERFORMANCE WITH DTC1
Outdoor Model Indoor Model Capacity
(BTUH) EER SEER
4AC14B18P-50 EAC4X24B 18,000 12.20 14.00
4AC14B24P-50 EAC4X24B 24,000 12.20 14.25
4AC14B30P-50 EAC4X30B 28,400 12.20 14.00
4AC14B36P-50 EAC4X36B 34,000 12.20 14.25
4AC14B42P-50 EAC4X49C 40,000 12.20 14.00
4AC14B48P-50 EAC4X60C 46,000 12.20 14.00
4AC14B60P-50 EAC4X60C 58,000 11.70 14.00
1 DTC = Designated Tested Combination
NOTE:
For the latest ratings, please see
www.alliedratings.com or www.AHRIdirectory.org

508228-01Issue 2136Page 8 of 41
MODEL NUMBER GUIDE
Technical Specications - 4AC14*P-10
Minor Revision Code
Major Revision Code
Electrical
P - 208 - 230v/60hz/1Ph
Tonnage
18, 24, 30, 36, 41, 42, 47, 48, 59, 60
Restrictions
Blank = Standard Model
R = Region-Restricted Model, not for
installation in the Southwest region
Refrigerant
4 = R410A
AC
Air Conditioner
SEER
14
Tier
L = Louvered
B = Wire Guard
4 AC 14 L R 24 P - 10 A
PHYSICAL AND ELECTRICAL DATA
Model Voltage/Hz/
Phase
Voltage
Range
Min.
Circuit
Amp.
Max. Over
Current
Device
(amps)
Compressor Fan Motor
Refrig.
Charge
(oz.)
Rated
Load
(amps)
Locked
Rotor
(amps)
Rated
Load
(amps)
Rated HP Nom.
RPM
4AC14*18P
208-230/60/1 197-253 12.4 20 9.4 56.6 0.7 1/0 1075 77
4AC14*R18P
4AC14*24P
208-230/60/1 197-253 15.0 25 11.2 60.8 1.0 1/6 825 86
4AC14*R24P
4AC14*30P
208-230/60/1 197-253 17.0 25 12.8 67.8 1.0 1/6 825 100
4AC14*R30P
4AC14*36P
208-230/60/1 197-253 18.6 30 14.1 83.0 1.0 1/6 825 102
4AC14*R36P
4AC14*41P 208-230/60/1 197-253 22.6 35 16.7 79.0 1.7 1/4 825 161
4AC14*42P
208-230/60/1 197-253 24.1 40 17.9 113.0 1.7 1/4 825 160
4AC14*R42P
4AC14*47P 208-230/60/1 197-253 26.7 45 19.9 109.0 1.8 1/3 825 179
4AC14*48P 208-230/60/1 197-253 26.6 45 19.8 109.0 1.7 1/4 825 174
4AC14*59P 208-230/60/1 197-253 34.1 50 25.0 134.0 2.8 1/3 825 178
4AC14*60P 208-230/60/1 197-253 34.8 60 26.4 134.0 1.8 1/3 825 192

508228-01 Issue 2136 Page 9 of 41
ACCESSORIES
Description Where Used Kit Number
Crankcase Heater All models 93M04
Hard Start
18 10J42
24, 30, 36, 41, 42, 47, 48, 59, 60 88M91
Compressor Low Ambient All models 34M72
Short Cycle Protector All models 47J27
Freezestat
3/8 tubing 93G35
5/8 tubing 50A93
Time Delay Relay All models 58M81
Loss of Charge Kit All models 84M23 (factory installed)
Sound Blanket
18, 24, 30, 36, 41 14W00 (factory installed)
42, 47, 48, 59, 60 14W01 (factory installed)
TXV Kit
18, 24, 30, 36 A4TXV01
42, 48, 60 A4TXV02
UNIT DIMENSIONS (IN.)
Model
Dimensions Sound
Rating
(dBA)
A -
Width
B -
Depth
C -
Height
4AC14*18P
24.25 24.25 29.00 71
4AC14*R18P
4AC14*24P
28.25 28.25 29.00 76
4AC14*R24P
4AC14*30P
28.25 28.25 37.00 74
4AC14*R30P
4AC14*36P
28.25 28.25 37.00 74
4AC14*R36P
4AC14*41P 28.25 28.25 37.00 76
4AC14*42P
28.25 28.25 33.00 76
4AC14*R42P
4AC14*47P 28.25 28.25 37.00 80
4AC14*48P 28.25 28.25 33.00 80
4AC14*59P 32.25 32.25 37.00 78
4AC14*60P 32.25 32.25 37.00 80
Note:
Dimensions listed are unit sizes w/o packaging

508228-01Issue 2136Page 10 of 41
MODEL NUMBER GUIDE
Technical Specications - 4AC14*P-6 thru 7
Minor Revision Code
Major Revision Code
Electrical
P - 208 - 230v/60hz/1Ph
Tonnage
18, 24, 30, 36, 41, 42, 47, 48, 59, 60
Restrictions
Blank = Standard Model
R = Region-Restricted Model, not for
installation in the Southwest region
Refrigerant
4 = R410A
AC
Air Conditioner
SEER
14
Tier
L = Louvered
B = Wire Guard
4 AC 14 L R 24 P - 7 A
PHYSICAL AND ELECTRICAL DATA
Model Voltage/Hz/
Phase
Voltage
Range
Min.
Circuit
Amp.
Max. Over
Current
Device
(amps)
Compressor Fan Motor
Refrig.
Charge
(oz.)
Rated
Load
(amps)
Locked
Rotor
(amps)
Rated
Load
(amps)
Rated HP Nom.
RPM
4AC14*18P-6,7
208-230/60/1 197-253 12.4 20 9.4 56.6 0.7 1/0 1075 77
4AC14*R18P-6,7
4AC14*24P-6,7
208-230/60/1 197-253 15.0 25 11.2 60.8 1.0 1/6 825 86
4AC14*R24P-6,7
4AC14*30P-6,7
208-230/60/1 197-253 17.0 25 12.8 67.8 1.0 1/6 825 100
4AC14*R30P-6,7
4AC14*36P-6,7
208-230/60/1 197-253 18.6 30 14.1 83.0 1.0 1/6 825 102
4AC14*R36P-6,7
4AC14*41P-6,7 208-230/60/1 197-253 22.6 35 16.7 79.0 1.7 1/4 825 161
4AC14*42P-6,7
208-230/60/1 197-253 24.1 40 17.9 113.0 1.7 1/4 825 160
4AC14*R42P-6,7
4AC14*47P-6,7 208-230/60/1 197-253 26.7 45 19.9 109.0 1.8 1/3 825 179
4AC14*48P-6,7 208-230/60/1 197-253 26.6 45 19.8 109.0 1.7 1/4 825 174
4AC14*59P-6,7 208-230/60/1 197-253 34.1 50 25.0 134.0 2.8 1/3 825 178
4AC14*60P-6,7 208-230/60/1 197-253 34.8 60 26.4 134.0 1.8 1/3 825 192