Bryant 38MAR User manual

Category
Split-system air conditioners
Type
User manual
Specifications subject to change without notice.
TABLE of CONTENTS
PAGE
SAFETY CONSIDERATIONS ....................................................... 1
INTRODUCTION............................................................................ 1
MODEL / SERIAL NUMBER NOMENCLATURES .................... 2
SPECIFICATIONS - HEAT PUMP ................................................ 3
DIMENSIONS ................................................................................. 4
CLEARANCES................................................................................ 7
ELECTRICAL DATA ..................................................................... 8
WIRING........................................................................................... 8
CONNECTION DIAGRAMS ......................................................... 9
WIRING DIAGRAMS..................................................................... 9
FAN AND MOTOR SPECIFICATIONS........................................ 12
REFRIGERATION CYCLE DIAGRAM........................................ 12
REFRIGERANT LINES .................................................................. 13
SYSTEM EVACUATION AND CHARGING ............................... 14
ELECTRONIC FUNCTIONS ......................................................... 15
POINT CHECK FUNCTION .......................................................... 20
TROUBLESHOOTING................................................................... 21
INDOOR UNIT DIAGNOSTIC GUIDES....................................... 22
DIAGNOSIS AND SOLUTION...................................................... 23
DISASSEMBLY INSTRUCTIONS ................................................ 49
APPENDIX ...................................................................................... 76
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning 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
coil cleaning. 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. Keep a
quenching cloth and fire extinguisher nearby when brazing. Use care
in handling, rigging, and setting bulky equipment.
Read this manual thoroughly and follow all warnings or cautions
included in the literature and attached to the unit. Consult local
building codes and National Electrical Code (NEC) for special
requirements. Recognize safety information. This is the safety-alert
symbol . When you see this symbol on the unit and in instructions
or manuals, be alert to the potential for personal injury. Understand
these signal words: DANGER, WARNING, and CAUTION.
These words are used with the safety-alert symbol. DANGER
identifies the most serious hazards which will result in severe personal
injury or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe
practices which may result in minor personal injury or product and
property damage. NOTE is used to highlight suggestions which will
result in enhanced installation, reliability, or operation.
INTRODUCTION
This service manual provides the necessary information to service,
repair, and maintain the 38MA*R family of heat pumps. Section 2 of
this manual has an appendix with data required to perform
troubleshooting. Use the Table of Contents to locate a desired topic.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, main electrical disconnect
switch must be in the OFF position. There may be more than 1 disconnect
switch
.
WAR N I N G
EXPLOSION HAZARD
Failure to follow this warning could result in death,
serious personal injury, and/or property damage.
Never use air or gases containing oxygen for leak
testing or operating refrigerant compressors.
Pressurized mixtures of air or gases containing
oxygen can lead to an explosion.
WAR N I N G
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or improper
operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe in the ground. If any
section of pipe is buried, there must be a 6 in. (152 mm) vertical rise to the valve
connections on the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section during extended
periods of system shutdown. This causes refrigerant slugging and could
possibly damage the compressor at start-up.
CAUTION
Service Manual
38MA*R
Outdoor Unit Single Zone Ductless System
Sizes 09 to 36
2 Specifications subject to change without notice. SG-38MAR-03
MODEL / SERIAL NUMBER NOMENCLATURES
Table 1 —Unit Sizes
SYSTEM TONS kBTUh VOLTAGE OUTDOOR MODEL
0.75 9,000
115/l/60
38MAQB09R--1
1.00 12,000 38MAQB12R--1
0.75 9,000
208/230-1
38MAQB09R--3
1.00 12,000 38MAQB12R--3
1.50 18,000 38MAQB18R--3
2.00 24,000 38MAQB24R--3
2.50 30,000 38MAQB30R--3
3.00 36,000 38MAQB36R--3
OUTDOOR UNIT
38
MA Q B 36
R --
3
38 = OUTDOOR UNIT
MA = MODEL
VOLTAGE
1=115-1-60
3=208/230-1-60
SYSTEM TYPE
Q = HEAT PUMP
MAXIMUM NUMBER OF FAN COIL UNITS THAT
CAN BE CONNECTED TO THE OUTDOOR UNIT
B = 1:1
NOT USED
UNIT TYPE
R = OUTDOOR UNIT
NOMINAL CAPACITY
09 - 3/4 TON
12 - 1 TON
18 - 1-1/2 TONS
24 - 2 TONS
30 - 2-1/2 TONS
36 - 3 TONS
01 19
V 10001
Week of Manufacture
Year of Manufacture
V = ALL MODELS
Sequential Serial Number
Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.
SG-38MAR-03 Specifications subject to change without notice. 3
SPECIFICATIONS - HEAT PUMP
Table 2 — Specifications
*
Condensing unit above or below the indoor unit
HEAT PUMP
System
Size
91291218243036
Outdoor Model 38MAQB09R--1 38MAQB12R--1 38MAQB09R--3 38MAQB12R--3 38MAQB18R--3 38MAQB24R--3 38MAQB30R--3 38MAQB36R--3
Electrical
Voltage,
Phase, Cycle
V/Ph/Hz 115-1-60
208/230-1-60
MCAA.1515 9 9 18202025
MOCP - Fuse
Rating
A. 20 20 15 15 25 30 30 35
Operating
Range
Cooling
Outdoor DB
Min - Max
° F (°C) -13~122 (-25~50)
Heating
Outdoor DB
Min - Max
° F (°C) -13~86 (-25~30) -13~86 (-25~30) -22~86 (-30~30) -22~86 (-30~30) -22~86 (-30~30) -22~86 (-30~30) -13~86 (-25~30) -13~86 (-25~30)
Piping
Total Piping
Length
ft (m) 82 (25) 82 (25) 82 (25) 82 (25) 98 (30) 164 (50) 164 (50) 164 (50)
Piping Lift
*
ft (m) 32 (10) 32 (10) 32 (10) 32 (10) 65 (20) 65 (20) 82 (25) 82 (25)
Pipe
Connection
Size - Liquid
in (mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52) 3/8 (9.52) 3/8 (9.52)
Pipe
Connection
Size - Suction
in (mm) 3/8 (9.52) 1/2 (12.7) 3/8 (9.52) 1/2 (12.7) 1/2 (12.7) 5/8 (16) 5/8 (16) 5/8 (16)
Refrigerant
Type R410A
Charge lbs (kg) 2.76 (1.25) 2.76 (1.25) 3.31 (1.5) 3.31 (1.5) 4.30 (1.95) 5.73 (2.60) 6.06 (2.75) 7.50 (3.40)
Metering
Device
EEV
Outdoor Coil
Face Area Sq. Ft 4.5 4.5 4.5 4.5
5.2 8.0 8.0 8.0
No. Rows 22222233
Fins per Inch
20 20 18 18 18 20 18 18
Circuits 44444466
Compressor
Type
Rotary Inverter
Model
ASM98D32UFZ ASM98D32UFZ ATM115D43UF2 ATM115D43UF2 ATF235D22UMT ATF235D22UMT ATF250D22UMT ATF250D22UMT
Oil Type
VG74
Oil Charge Fl. Oz.
13.0 13.0 17.6 17.6 23.6 23.6 23.6 23.6
Rated Current RLA
9.0 9.0
5.3 5.7 12.3 14.0 15.0 17.0
Outdoor
Unit Width in (mm)
32.09 (815) 32.09 (815) 32.09 (815) 32.09 (815)
33.66 (855) 37.24 (946) 37.24 (946) 37.24 (946)
Unit Height in (mm)
21.81 (554) 21.81 (554) 21.81 (554) 21.81 (554)
27.63 (702) 31.89 (810) 31.89 (810) 31.89 (810)
Unit Depth in (mm)
13.11 (333) 13.11 (333) 13.11 (333) 13.11 (333)
14.17 (360)
16.14 (410) 16.14 (410) 16.14 (410)
Net Weight lbs (kg)
82.9 (37.6) 82.9 (37.6) 91.5 (41.5) 91.5 (41.5) 118.2 (53.6) 145.5 (66) 139.8 (63.4) 147.3 (66.8)
Airflow CFM
1,200 1,200 1,200 1,200 1,390 2,130 2,130 2,130
Sound
Pressure
dB(A)
52.5 52.5
55.5 56.0 57.5 60.5 60.5 60.5
4 Specifications subject to change without notice. SG-38MAR-03
DIMENSIONS
Table 3 — Unit Sizes
Fig. 1 —Sizes 09K-12K
38MAR UNIT SIZE 9K 12K 9K 12K 18K 24K 30K 36K
Voltage 115V 115V 208/230V 208/230V 208/230V 208/230V 208/230V 208/230V
HEIGHT (H)
in (mm) 21.81(554) 21.81(554) 21.81(554) 21.81(554) 27.63(702) 31.89(810) 31.89(810) 31.89(810)
WIDTH (W)
in (mm) 32.09(815) 32.09(815) 32.09(815) 32.09(815) 33.66 (855) 37.24(946) 37.24(946) 37.24(946)
DEPTH (D)
in (mm) 13.11(333) 13.11(333) 13.11(333) 13.11(333) 14.17(360) 16.14(410) 16.14(410) 16.14(410)
L1
in (mm) 20.24(514) 20.24(514) 20.24 (514) 20.24(514) 21.26(540) 26.50(673) 26.50(673) 26.50(673)
L2
in (mm) 13.39(340) 13.39(340) 13.39 (340) 13.39(340) 13.78(350) 15.87(403) 15.87(403) 15.87(403)
OPERATING
WEIGHT
Lbs (kg) 82.9(37.6) 82.9(37.6) 91.5(41.5) 91.5(41.5) 118.2(53.6) 145.5(66) 139.8(63.4) 147.3(66.8)
21.81 in
(554 mm)
0.47 in
(12 mm)
14.36 in
(365 mm)
20.22 in
(514 mm)
32.04 in
(814 mm)
2.79 in
(71 mm)
14.36 in
(365 mm)
2.36 in
(60 mm)
3.36 in
(85 mm)
12.79 in
(325 mm)
12.23 in
(311 mm)
0.87 in
(22 mm)
2.42 in
(62 mm)
L2
13.38 in
(340 mm)
SG-38MAR-03 Specifications subject to change without notice. 5
Fig. 2 —Size 18K
14.84 in
(377 mm)
0.51 in
(13 mm)
27.68 in
(703 mm)
33.69 in
(856mm)
21.28 in
(540 mm)
33.19 in
(843 mm)
2.80 in
(71 mm)
14.84 in
(377 mm)
3.64 in
(92 mm)
2.39 in
(61 mm)
13.69 in
(348 mm)
0.47 in
(12 mm)
2.81 in
(66 mm)
L2
13.80 in
(351 mm)
6 Specifications subject to change without notice. SG-38MAR-03
Fig. 3 —Sizes 24K, 30K, and 36K
SG-38MAR-03 Specifications subject to change without notice. 7
CLEARANCES
Fig. 4 —Clearances
Table 4 — Clearances
Fig. 5 —Clearances for multiple units
UNIT
MINIMUM VALUE
IN. (MM)
A 24 (609)
B 24 (609)
C 24 (609)
D 4 (101)
E 4 (101)
A
D
B
Air-outlet
Air-inlet
C
E
9.8 in (25cm)
or more for
proper airflow
24in(61cm)
or
more
recommended
for service
9.8 in (25cm)
or more for
proper airflow
24in(61cm)
or
more
recommended
for service
59in (150cm)
or more on a
multiple parallel
unit arrangement
24in (61cm) or more
on a single parallel
unit arrangement
24in (60cm)
or more
118in (300cm)
or more
19in (48cm) or more
on a multiple parallel
unit arrangement
4in (10cm) or more
on a single parallel
unit arrangement
8 Specifications subject to change without notice. SG-38MAR-03
ELECTRICAL DATA
Table 5 — Electrical Data
*Permissible limits of the voltage range at which the unit will operate satisfactorily.
LEGEND:
FLA - Full Load Amps
MCA - Minimum Circuit Amps
RLA - Rated Load Amps
WIRING
All wires must be sized per NEC (National Electrical Code) or CEC
(Canadian Electrical Code) and local codes. Use Electrical Data table
MCA (minimum circuit amps) and MOCP (maximum over current
protection) to correctly size the wires and the disconnect fuse or
breakers respectively.
Recommended Connection Method for Power and
Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied 14/
3 stranded wire with ground with a 600 volt insulation rating, power/
communication wiring from the outdoor unit to indoor unit consists of
four (4) wires and provides the power for the indoor unit. Two wires
are line voltage AC power, one is communication wiring (S) and the
other is a ground wire. Wiring between indoor and outdoor unit is
polarity sensitive. The use of BX wire is NOT recommended.
If installed in a high Electromagnetic field (EMF) area and
communication issues exists, a 14/2 stranded shielded wire can be
used to replace L2/N and (S) between outdoor unit and indoor unit
landing the shield onto ground in the outdoor unit only.
MAR OUTDOOR UNIT SIZE 9K 12K 9K 12K 18K 24K 30K 36K
Power
Supply
Volts- PH - Hz 115 - 1 - 60 115 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60
Max – Min*
Oper. Voltage
104 - 126 104 - 126 187 - 253 187 - 253 187 - 253 187 - 253 187 - 253 187 - 253
MCA 15 15 9 9 18 20 20 25
Max Fuse/
CB AMP
20 20 15 15 25 30 30 35
Compressor
Volts - PH - Hz 115 - 1 - 60 115 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60 208/230 - 1 - 60
RLA 9 9 5.25 5.65 12.3 14 15 17
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in damage or
improper operation.
Wires should be sized based on NEC and local codes.
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Be sure to comply with local codes while running wire from
the indoor unit to the outdoor unit.
Every wire must be connected firmly. Loose wiring may
cause the terminal to overheat or result in unit malfunction. A
fire hazard may also exist. Ensure all wiring is tightly
connected.
No wire should touch the refrigerant tubing, compressor or
any moving parts.
Disconnecting means must be provided and shall be located
within sight and readily accessible from the air conditioner.
Connecting cable with conduit shall be routed through the
hole in the conduit panel.
CAUTION
SG-38MAR-03 Specifications subject to change without notice. 9
CONNECTION DIAGRAMS
Fig. 6 —Connection Diagrams
NOTES:
1. Do not use thermostat wire for any connection between indoor and outdoor units.
2. All connections between indoor and outdoor units must be as shown in Fig. 6. The connections are sensitive to polarity and will result in a fault
code.
WIRING DIAGRAMS
Fig. 7 —Wiring Diagram Sizes 09K-12K (115V)
Table 6 — Diagram Sizes 09K-12K (115V)
S
L
N
115-1-60
Main
Power Supply
115-1-60
L
N
S
L
N
Power to
Indoor Unit
CONNECTING CABLE
OUTDOOR TO INDOOR
GND
Ground
Indoor
Signal
High
Voltage
115-1-60
115-1-60
FIELD POWER SUPPLY
GND
Indoor
Signal
High
Voltage
Indoor Unit
Power Supply
S
L1 L2
208/230-1-60
Main
Power Supply
L1
L2
S
L1
L2
CONNECTING CABLE
OUTDOOR TO INDOOR
Indoor Unit
Power Supply
208/230-1-60
Indoor
Signal
High
Voltage
GND
Ground
Power to
Indoor Unit
Indoor
Signal
High
Voltage
208/230-1-60
FIELD POWER SUPPLY
GND
208/230-1-60
9K and 12K 115V Indoor Unit 9K and 12K 115V Outdoor Unit 9K to 36K 230V Indoor Unit 9K to 36K 230V Outdoor Unit
CODE PART NAME CODE PART NAME
CN1A INPUT:115V High voltage connector with L/N/Ground/Signal CN60 Output:115 VAC for 4 - way valve control
CN4_1 CN4_2
CN4_3 CN4 4
Output: 115VAC High voltage connector for power factor corrector (PFC) CN50 Output: PWM for UVW to control Compressor(0 - 320VAC)
CN7 Output: PWM for UVW to control the outdoor fan (0 - 320VAC) CN21 Input: Temperature acquisition (0 - 5VDC)
CN15 Output:115VAC High voltage to control base pan heater CN31 Connector for electronic expansion valve (0 - 12VDC)
CN17 Output:115VAC High voltage to control crankcase heater
10 Specifications subject to change without notice. SG-38MAR-03
Fig. 8 —Wiring Diagram - Sizes 09K, 12K, 18K (208-230V)
Table 7 — Diagram Sizes 09K, 12K, 18K (208-230V)
NOTE: The control board wiring diagram (see Fig. 8) for units starting with serial number 2616V10001 showing one
harness CN17. Adapter harness for these units available through RCD, P/N 17401204002644. Prior units required 2
harnesses CN1 and CN10 on the control board.
CODE PART NAME CODE PART NAME
CN2 Output: high voltage signal (to indoor unit) CN12,CN13 Output: High voltage to reactor
CN7, 8 Input: 220 VAC High voltage (from indoor unit) UV W Output: Pulse (0 - 320VDC) to compressor
CN60 Output: 220 VAC for 4 - way valve control CN10
Input: Pin1 - Pin2 (0 - 5V) from discharge
temperature sensor
CN16 Output: 220 VAC High voltage to control crankcase heater CN1
Input: Pin1, Pin3, Pin4, Pin5
(0 - 5V) from condenser and outdoor ambient
temperature sensors
CN414 Output: Pulse (0 - 320VDC)to outdoor fan motor CN6 - 1 Ground Connector
CN5 (CN4) Output: 220 VAC High voltage to control base pan heater CN18 Output:Pin5&6 (12V) to electronic expansion valve
NOTE:
Refer to note
at bottom of
page.
ELECTRONIC
EXPANSIVE
VALVE
OUTDOOR
DC FAN
OUTDOOR WIRING DIAGRAM
16022000A75054
CN30
CN1
CN10
CN17
CN13
CN12
CN8
CN7
CN2
CN6-1
CN3
CN18
CN60
COMPRESSOR
BLUE
BLUE
REACTOR
SG-38MAR-03 Specifications subject to change without notice. 11
Fig. 9 —Wiring Diagram Sizes 24K-36K
MAIN BOARD
U
V
W
Y/G
L
L-PRO
T3
T4
CODE
PART NAME
COMPRESSOR
4-WAY VALVE
COMP
CAP1
EEV
ELECTRONIC EXPANSION
VALVE
H-PRO
L-PRO
LOW PRESSURE SWITCH
HIGH PRESSURE SWITCH
T3
T4
CONDENSER
TEMPERATURE SENSOR
OUTDOOR AMBIENT
TEMPERATURE SENSOR
H-PRO
SV
L
PFC INDUCTOR
TP
TP
EXHAUST
TEMPERATURE SENSOR
RED
BLACK
V
U
CN19
CN51
CN55
W
EEV
BLACK
REVIRDBOARD
RED
YELLOW
BLUE
P-1
FM1
OUTDOOR DC FAN
FAN MOTOR CAPACITOR
CN53
CN20
CN3
CN4
CN10
CN40
CN22
CN44
CN8
CN9
CN7
CN2
CN1
CN5
CN54
CN52
CN33
5(6)
CN6
SV
4-WAY1
BLUE
BLUE
HEAT2
HEAT1
BLACK
RED
BLUE
BLUE
BLUE
YELLOW
RED
BLACK
RED
BLACK
JXI
L2
TO INDOOR UNIT
POWER SUPPLY
Y/G
L2
S
L1
L1
RED
RED
BLACK
YELLOW
S
BLACK
YELLOW
Crankcase Heater
Base Pan Heater
ONL ROF Y
K63 ODU
L1
L2
FM1
Y/G
3
3
Y/G
COMP
CN1, CN2
IInput: 220VAC high voltage (indoor unit)
S
Input: High Voltage Signal (indoor unit)
CN3, CN22
Output: 220VAC for 4-way valve control
CN4, CN40
Output: 220VAC high voltage for
cranckase heater
CN5,CN6
Output: 220VAC high voltage for power for
driver board
CN53,CN54
Input: 220VAC high voltage for driver board
CN9
Input: Pin1, Pin2, Pin4, Pin5 (0-5V) for high
and low pressure switches where applicable
Output: 220VAC high voltage for base pan heater
CN10, CN44
CN19
CN20
Output: (Pin5 or 6) to EEV Pin1, 2, 3,4).
Pulse waveform (0-12V)
CN33
Input: Pin1, Pin2 (0-5V) from exhaust
temperature sensor
CN51, CN52
Output: 220VAC high voltage for PFC inductor
CN7
Output: Pin1-3=12VDC.Pin2-3=5VDC.
(other pin for chip cumunication)
CN55
Input: Pin1-3=12VDC.Pin2-3=5VDC.
(other pin for chip cumunication)
CN8
Input: Pin1, Pin3, Pin4, Pin5 (0-5V) for condenser
and outdoor ambient temperature sensors
Output: Pulse (0-320VDC) for Outdoor DC Fan
U V W
Output: Pulse (0-320VDC) for Compressor
P-1
Ground Connector
12 Specifications subject to change without notice. SG-38MAR-03
FAN AND MOTOR SPECIFICATIONS
Table 8 — Fan and Motor Specifications
REFRIGERATION CYCLE DIAGRAM
Fig. 10 —Heat Pumps
38MAR UNIT SIZE
9K
(115V)
12K
(115V)
9K
(208/230V)
12K
(208/230V)
18K
(208/230V)
24K
(208/230V)
30K
(208/230V)
36K
(208/230V)
Outdoor Fan
Material AS
Type
ZL-429*119*8-3KN
(ASG30)
ZL-429*119*8-3KN
(ASG30)
ZL-427*139*8-3KN
(ASG30)
ZL-427*139*8-3KN
(ASG30)
ZL-490*151*12-3KN
(ASG30)
ZL-560*139*12-3KN
(ASG30)
ZL-560*139*12-3KN
(ASG30)
ZL-560*139*12-3KN
(ASG30)
Diameter inch
16.8 16.8 16.6 16.6 18.1 22.0 22.0 22.0
Height inch
4.7 4.7 5.5 5.5 6.0 5.5 5.5 5.5
Outdoor
Fan Motor
Model
ZKFN-40-8-1L ZKFN-40-8-1L ZKFN-40-8-1L ZKFN-40-8-1L ZKFN-50-8-2 ZKFN-120-8-2 ZKFN-120-8-2 ZKFN-120-8-2
Volts V
115 115 208/230 208/230 208/230 208/230 208/230 208/230
Phase
1
Hertz Hz
60
FLA
0.6 0.6 0.38 0.38 0.42 0.5 0.6 0.6
Rated HP HP
0.053 0.053 0.053 0.053 0.067 0.16 0.16 0.16
Output W
40 40 40 40 50 120 120 120
Type
DC
Insulation
Class
A
Safe Class
IPX4
Input W
54 54 54 54 115 87 87 87
Range of
Current
Amps 0.1910%
0.1910% 0.1910% 0.1910% 0.4110% 0.3110% 0.3110% 0.3110%
Rated Current Amps
0.19 0.19 0.19 0.19 0.41 0.31 0.31 0.31
Capacitor F
No Capacitor
Speed rev/min
800/700/600 800/700/600 800/700/600 800/700/600 850/700/600 850/700/600 850/700/600 850/700/600
Rated RPM rev/min
980 980 980 980 900 1150 1150 1150
Max. Input W
91 91 91 91 137 170 170 170
LIQUID SIDE
GAS SIDE
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COMPRESSOR
2-WAY VALVE
3-WAY VALVE
4-WAY VALVE
COOLING
HEATING
T2 Evaporator
temp. sensor
T1 Room temp.
sensor
ACCUMULATOR
ROODTUOROODNI
EXV
SG-38MAR-03 Specifications subject to change without notice. 13
REFRIGERANT LINES
General Refrigerant Line Sizing
1. The outdoor units are shipped with a full charge of R410A refrigerant. All charges, line sizing, and capacities are based on runs of 25ft. (7.6 m).
For runs over 25 ft. (7.6 m), consult the long-line applications section for the proper charge adjustments.
2. The minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m).
3. Refrigerant lines should not be buried in the ground. If it is necessary to bury the lines, not more than 36 in (914 mm) should be buried. Provide a
minimum 6in (152 mm) vertical rise to the service valves to prevent refrigerant migration.
4. Both lines must be insulated. Use a minimum of 1/2in. (12.7 mm) thick insulation. Closed-cell insulation is recommended in all long-line
applications.
5. Special consideration should be given to isolating interconnecting tubing from the building structure. Isolate the tubing so vibration or noise is not
transmitted into the structure.
IMPORTANT: Both refrigerant lines must be insulated separately.
Table 9 displays the following maximum lengths allowed.
Table 9 — Refrigerant Line Lengths
The charge amount listed in Table 9 is for piping runs up to 25 ft.
(7.6 m).
For piping runs greater than 25 ft. (7.6 m), add refrigerant up to the
allowable length as specified in Table 10.
Long Line Applications,:
1. No change in line sizing is required.
2. Add refrigerant per Table 10.
Table 10 — Additional Charge
SYSTEM SIZE 9K (115V) 12K (115V) 9K (208-230 V) 12K (208-230 V) 18K (208-230 V) 24K (208-230 V) 30K (208-230 V)
Piping
Min. Piping Length ft (m) 10 (3) 10 (3) 10 (3) 10 (3) 10 (3) 10 (3) 10 (3)
Standard Piping Length ft (m) 25 (7.5) 25 (7.5) 25 (7.5) 25 (7.5) 25 (7.5) 25 (7.5) 25 (7.5)
Max. outdoor-indoor height
difference
ft (m) 32(10) 32(10) 32(10) 32(10) 65(20) 65(20) 82(25)
Max. Piping Length with no
additional refrigerant charge
ft (m) 26(8) 26 (8) 26(8) 26(8) 26(8) 26(8) 26(8)
Max. Piping Length ft (m) 82(25) 82 (25) 82(25) 82(25) 98(30) 164(50) 164(50)
Additional refrigerant charge
(between Standard – Max
piping length)
Oz/ft (g/m) 0.16(15) 0.16 (15) 0.16(15) 0.16(15) 0.16(15) 0.32(30) 0.32(30)
Gas Pipe
(size - connection type)
in (mm) 3/8 (9.52) 1/2 (12.7) 3/8 (9.52) 1/2 (12.7) 1/2 (12.7) 5/8 (16) 5/8 (16)
Liquid Pipe
(size - connection type)
in 1/4 in 1/4 in 1/4 in 1/4 in 1/4 in 3/8 in 3/8 in
(mm) 6.35 6.35 6.35 6.35 6.35 9.52 9.52
Refrigerant
Refrigerant Type R410A R410A R410A R410A R410A R410A R410A
Heat Pump Models
Charge Amount
Lbs (kg) 2.76(1.25) 2.76 (1.25) 2.76(1.25) 2.76(1.25) 4.19(1.90) 5.18(2.35) 6.62(3.00)
Unit
Size
Total Line
Length
Additional Charge, oz/ft. ft (m)
Min Max
10-25
(3-8)
>25-82
(8-25)
>82-98
(25-30)
>98-164
(30-50)
9
10(3)
82(25)
None
0.16
12
18
98(30)
0.16
24
0.32 0.3230
164(50) 0.32
36
14 Specifications subject to change without notice. SG-38MAR-03
SYSTEM EVACUATION AND CHARGING
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. Always break a
vacuum with dry nitrogen.
System Vacuum and Charge
Using Vacuum Pump
1. Completely tighten all flare nuts and connect manifold gage charge
hose to a charge port of the low side service valve (see Fig. 11.).
2. Connect charge hose to vacuum pump.
3. Fully open the low side of manifold gage (see Fig. 12).
4. Start vacuum pump.
5. Evacuate using the triple evacuation method.
6. After evacuation is complete, fully close the low side of manifold
gage and stop operation of vacuum pump.
7. The factory charge contained in the outdoor unit is good for up to 25
ft. (8 m) of line length. For refrigerant lines longer than 25 ft. (8 m),
add refrigerant as specified in the Table 10.
8. Disconnect charge hose from charge connection of the low side
service valve.
9. Fully open service valves B and A.
10. Securely tighten caps of service valves.
Fig. 11 —Service Valve
Fig. 12 —Manifold
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of pulling
a vacuum of 500 microns and a vacuum gage capable of accurately
measuring this vacuum depth. The deep vacuum method is the most
positive way of assuring a system is free of air and liquid water (see
Fig. 13).
Fig. 13 —Deep Vacuum Graph
Triple Evacuation Method
The triple evacuation method should be used. Refer to Fig. 16 and
proceed as follows:
1. Pump system down to 500 MICRONS of mercury and allow pump
to continue operating for an additional 15 minutes.
2. Close service valves and shut off vacuum pump.
3. Connect a nitrogen cylinder and regulator to system and open until
system pressure is 2 psig.
4. Close service valve and allow system to stand for 10 minutes.
During this time, dry nitrogen will be able to diffuse throughout the
system absorbing moisture.
5. Repeat this procedure as indicated in Fig. 14. System will then be
free of any contaminants and water vapor.
Fig. 14 —Triple Evacuation Method
Final Tubing Check
IMPORTANT: Check to be certain factory tubing on both
indoor and outdoor unit has not shifted during shipment.
Ensure tubes are not rubbing against each other or any
sheet metal. Pay close attention to feeder tubes, making
sure wire ties on feeder tubes are secure and tight.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Never use the system compressor as a vacuum pump.
CAUTION
Outdoor Unit
Indoor Unit
Refrigerant
Service Valve
Low Side
High Side
A
B
C
D
Manifold Gage
500 microns
Low side valve
High side valve
Charge hose
Charge hose
Vacuum
pump
Low side valve
500
MINUTES
01234567
1000
1500
LEAK IN
SYSTEM
VACUUM TIGH
T
TOO WET
TIGHT
DRY SYSTEM
2000
MICRONS
2500
3000
3500
4000
4500
5000
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACUUM)
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
RELEASE CHARGE INTO SYSTEM
BREAK VACUUM WITH DRY NITROGEN
EVACUATE
WAIT
SG-38MAR-03 Specifications subject to change without notice. 15
ELECTRONIC FUNCTIONS
Abbreviation:
•T1: Indoor room temperature
•T2: Coil temperature of indoor heat exchanger middle.
•T2B: Coil temperature of indoor heat exchanger outlet.
•T3: Coil temperature of condenser
•T4: Outdoor ambient temperature
•T5: Compressor discharge temperature
•Td: Target temperature
•Ts: Set Point Temperature
Main Protection
Three minute delay for compressor restart
Less than a 1 minute delay for the initial start-up and a 3 minute delay
for subsequent starts.
Compressor high temperature cutout
The unit stops working when the compressor high temperature cutout
opens, and restarts after the compressor high temperature cutout
closes.
Compressor discharge temperature protection
Compressor discharge temp. T5>239°F(115°C) for 5s, compressor
stops.
Fan speed is out of control
When the indoor fan speed is too low (300RPM) or too high
(1500RPM) for a certain time, the unit stops and the LED displays the
failure.
Inverter module protection
The inverter module has a protection function for current, voltage and
temperature. If any of these protections engage, the corresponding
code displays on the indoor unit and the unit stops working.
Indoor fan delayed open function
When the unit starts up, the louver is active immediately and the
indoor fan opens 10s later. If the unit is running in the HEATING
mode, the indoor fan is also controlled by the anti-cold wind function.
Compressor preheating functions
Preheat parameters: When the T4 (outdoor ambient
temperature)<37.4°F (3°C), preheat function is activated.
Zero crossing detection error protection
If the AC detects the time interval is not correct for a continuous 240s,
the unit stops and the LED displays the failure. The correct zero
crossing signal time interval should be between 6-13ms.
Sensor protection at open circuit and breaking disconnection
If only one temperature sensor malfunctions, the air conditioner
continues to work however the error code displays on the LED, in the
event of any emergency use. If more than one temperature sensor
malfunctions, the air conditioner stops working.
Refrigerant leakage detection
This function is only active in the COOLING mode. The function
helps prevent the compressor from being damaged by a refrigerant
leakage or a compressor overload.
Open condition:
When the compressor is active, the evaporator T2 coil temperature
value has no or very little change.
Operation Modes and Functions
FAN Mode
1. Outdoor fan and compressor stop
2. Temperature setting function is disabled and no setting temperature
appears.
3. Indoor fan can be set to high/med/low/auto
4. The louver operates same as in the COOLING mode.
5. Auto fan
Fig. 15 —AUTO FAN Mode
COOLING Mode
Compressor Running Rules:
When T1-Ts < -4°F(-2°C), the compressor stops.
When T1-Ts > -1°F(-0.5°C), the compressor activates.
When the AC runs in the mute mode, the compressor runs with
low frequency.
When the current is more than setting value, the current protection
function activates, and the compressor stops.
Outdoor Fan Running Rules:
The outdoor unit runs at a different fan speed according to T4. For
different outdoor units, the fan speeds differ.
Fig. 16 —Outdoor Fan Running Rules
a
b
c
d
e
T1
°C
10.8
°F (6.0°C)
9°F (5.0°C)
7.2°F (4.0°C)
4.5°F (2.5°C)
1.8°F (1.0°C)
H
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L
T4
A DC_FAN_HI_SPD_ADD
B DC_FAN_MID_SPD_ADD
C DC_FAN_MIN_SPD_ADD
D DC_FAN_SLOW_SPD_ADD
E DC_FAN_SSLOW_SPD_ADD
8
2.4°F (28°C)
6
6.2°F (19°C)
6
2.6°F (17°C)
78.8°F (26°
C)
77°F (25°C)
7
3.4°F (23°C)
7
1.6°F (22°C)
69°F (20°C)
E
A
B
C
D
A
DD
DD
D
D
D
D
D
D
D
D
_
A
A
A
A
DD
D
D
D
DD
D
D
D
D
D
_
A
DD
DD
DD
D
D
DD
D
D
D
D
P
D_
A
A
A
A
D
D
D
D
D
D
DD
D
D
D
D
S
P
D_
A
A
A
A
A
A
A
A
DD
DD
DD
DD
DD
DD
DD
DD
D
D
D
°
16 Specifications subject to change without notice. SG-38MAR-03
Indoor Fan Running Rules:
•In the COOLING mode, the indoor fan runs continuously and the
user can select any of the following speeds: HIGH, MEDIUM,
LOW and AUTO.
When the setting temperature is reached, if the compressor stops
running, the indoor fan motor runs in the minimum or setting
speed (see Fig. 17).
Fig. 17 —Indoor Fan Running Rules
The AUTO fan adheres to the following rules (see Fig. 18):
Fig. 18 —AUTO FAN Running Rules
Compressor Temperature Protection
Fig. 19 —Compressor Temperature Protection
Off: Compressor stops
Decrease: Decrease the running frequency to the lower level
Hold: Keep the current frequency
Resume: No limitation for frequency
When the condenser temperature is higher than the setting value, the
compressor stops.
Evaporator Temperature Protection
When the evaporator temperature is lower than the setting value the
compressor stops.
HEATING Mode
Compressor Running Rules:
When T1-Ts>-T, the compressor stops.
When T1-Ts<T-1.5, the compressor is on. T is the programmed
parameter for temperature compensation.
When the AC runs in MUTE mode, the compressor runs with a
low frequency.
When the current is more than the setting value, the current
protection function activates and the compressor stops.
Outdoor Fan Running Rules:
The outdoor unit runs at a different fan speed according to T4. For
different outdoor units, the fan speeds differ.
Fig. 20 —Outdoor Fan Running Rules
Setting Fan
Speed
T1-Td °F (°C)
Actual Fan Speed
H
H + (H+=H+G)
H (=H)
A
B
C
H - (H- =H-G)
M
D
E
F
M + (M+=M+Z)
M (M=M)
M - (M- =M-Z)
L
H
I
G
L + (L+=L+D)
L (L=L)
L - (L- =L-D)
8.1°F (4.5°C)
5.4°F (3.0°C)
2.7°F(1.5°C)
8.1°F (4.5°C)
5.4°F (3.0°C)
2.7°F(1.5°C)
8.1°F (4.5°C)
5.4°F (3.0°C)
2.7°F(1.5°C)
a
b
c
d
e
T1
°C
10.8
°F (6.0°C)
9°F (5.0°C)
7.2°F (4.0°C)
10.8°F (6.0°C)
1.8°F (1.0°C)
H
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L
T3
O
Decrease
Hold
Resume
E
C
B
A
T4 °C
D
69.8°F (21°C)
66.2
°F (19°C)
64.4
°F (18°C)
60.8
°F (16°C)
59°F (15°C)
54.4°F (13°C)
53.6
°F (12°C)
DC_FAN_SLOW_SPD_ADD°F
50°F (10°C)
DC_FAN_SLOW_SPD_ADD
DC_FAN_MIN_SPD_ADD
DC_FAN_MID_SPD_ADD
DC_FAN_HI_SPD_ADD
SG-38MAR-03 Specifications subject to change without notice. 17
Indoor Fan Running Rules:
When the compressor is on, the user can set the indoor fan to either
HIGH/MED/LOW/AUTO/MUTE. When the indoor unit coil
temperature is low, the anti-cold air function starts and the indoor fan
motor runs at the low speed. The speed can not be changed.
When the temperature is lower than the setting value, the indoor fan
motor stops. When the indoor temperature reaches the setting
temperature, the compressor stops, the indoor fan motor runs at the
minimum speed or setting speed. The anti-cold air function is valid.
The indoor fan is controlled as shown in Fig. 21.
Fig. 21 —Indoor Fan Running Rules
Auto fan action in the HEATING mode.
Fig. 22 —Auto Fan Action in HEATING Mode
Setting Fan
Speed
T1-Td+34.7°F (1.5 °C)
Actual Fan
Speed
H
H - (H-=H-G)
H (=H)
H + (H+ =H+G)
M
M (M=M)
M + (M+ =M+Z)
L
L - (L-=L-D)
L (L=L)
L + (L+ =L+D)
-2.7°F(-1.5°C)
-5.4°F (-3.0°C)
-8.1°F(-4.5°C)
-2.7°F(-1.5°C)
-5.4°F (-3.0°C)
-8.1°F(-4.5°C)
M - (M-=M-Z)
-2.7°F(-1.5°C)
-5.4°F (-3.0°C)
-8.1°F(-4.5°C)
T1-Td +3F (1.5C)
0°F(0.0°C)
-1.8F(-1.0°C)
-3.6°F(-2.0°C)
-7.2°F(-4.0°C)
-9°F(-5.0°C)
-10.8°F(-6.0°C)
-11.7°F(-6.5°C)
L
(H+-L)*0.2+L
(H+-L)*0.4+L
(H+-L)*0.6+L
(H+-L)*0.8+L
H+
-5.4°F(-3.0°C)
18 Specifications subject to change without notice. SG-38MAR-03
DEFROST Mode
The air conditioning unit enters the DEFROST mode according to the value of temperature of T3 and the value range of temperature change of
T3 plus the compressor running time (see Fig. 23).
During the DEFROST mode, the compressor keeps running however the indoor and outdoor motors stop.
Fig. 23 —Defrost Chart
The indoor unit defrost lamp illuminates and the logo appears.
SG-38MAR-03 Specifications subject to change without notice. 19
Evaporator Coil Temperature Protection
Fig. 24 —Evaporator Coil Temperature Protection
When the evaporator temperature is higher than the setting protection
value, the compressor stops.
AUTO Mode
AUTO mode can be selected with the remote controller and the
setting temperature can be changed between 62.6°F (17°C)
~86°F(30°C). In AUTO mode, the unit chooses either COOLING,
HEATING or the FAN-ONLY mode according to T (Example:
(T=T1-T2)).
Fig. 25 —AUTO Mode
Heating*: For cooling only models, they will run at the fan speed.
The indoor fan will run in the AUTO fan speed for the relevant mode.
The louver operates the same as in the relevant mode.
If the unit switches mode between HEATING and COOLING, the
compressor keeps stopping for a certain time and then chooses the
mode according to T1-Ts. If the setting temperature is modified, the
unit selects a running function again.
DRYING mode
The indoor fan speed is fixed at breeze and can not be changed. The
louver angle is the same as in the COOLING mode.
Low Indoor Room Temperature Protection
In the DRYING mode, if the room temperature is lower than 50°F
(10°C), the compressor stops and does not resume until the room
temperature exceeds 53.6°F (12°C).
Evaporator anti-freezing protection, condenser high temperature
protection and outdoor unit frequency limit are active and are the
same as that in the COOLING mode. The outdoor fan operates the
same as in COOLING mode.
FORCED OPERATION Function
Enter FORCED OPERATION function:
When the machine is off, press TOUCH to engage the Forced Auto
Mode. Press TOUCH again, within 5 seconds, to engage the
FORCED COOLING mode. In FORCED AUTO, FORCED
COOLING or any other operation mode, press TOUCH to turn off
the unit.
In the FORCED OPERATION mode, all general protections and the
remote controller are available.
Operation Rules:
FORCED COOLING mode:
The compressor runs at the F2 frequency and the indoor fan runs as a
breeze. After running for 30 minutes, the unit enters the AUTO mode
at a 75.2°F (24°C) setting temperature.
FORCED AUTO mode:
The FORCED AUTO mode is the same as the normal AUTO mode
with a 75.2°F (24°C) setting temperature.
AUTO-RESTART function
The indoor unit is equipped with an AUTO-RESTART function,
which is carried out through an auto-restart module. In case of a
sudden power failure, the module memorizes the setting conditions
before the power failure. The unit resumes the previous operation
setting (not including the swing function) automatically 3 minutes
after the power returns.
If the memorization condition is the FORCED COOLING mode, the
unit runs in the COOLING mode for 30 minutes and enters the
AUTO mode as 75.2°F (24°C) setting temp.
If the air conditioner turns off before the unit powers off and the air
conditioner is required to restart immediately, the compressor delays
for 1 minute when the power is on. Under other conditions, the
compressor has a 3 minute delay when it restarts.
Refrigerant Leakage Detection
With this new technology, the display area displays EC when the
outdoor unit detects a refrigerant leak.
46°F (8°C) Heating
When the compressor is running, the indoor fan motor runs without
the anti-cold air function. When the compressor is off, the indoor fan
motor is off.
O
Decrease
Hold
Resume
T1-Ts
Cooling
FAN Only
Heating*
20 Specifications subject to change without notice. SG-38MAR-03
POINT CHECK FUNCTION
Press the remote controller LED DISPLAY or LED or MUTE three times, and then press AIR DIRECTION or SWING three times within
ten seconds (the buzzer rings for two seconds). The air conditioner enters the information enquiry status.
The user can press LED DISPLAY or AIR DIRECTION to check the next command. When the air conditioner enters the information enquiry
status, it displays the code name in 2 seconds. When the air conditioner enters the information enquiry status, it displays the code value in the
next 25 seconds.
Table 11 — Enquiry Information
When the air conditioner enters the information enquiry status, the LED displays the code value within 25 seconds (see Table 12).
Table 12 — Enquiry Information
ENQUIRY INFORMATION DISPLAYING CODE MEANING
T1 T1 T1 temp.
T2 T2 T2 temp.
T3 T3 T3 temp.
T4 T4 T4 temp.
T2B Tb T2B temp.
TP TP TP (T5) temp.
TH TH TH temp.
Targeted Frequency FT Targeted Frequency
Actual Frequency Fr Actual Frequency
Indoor Fan Speed IF Indoor Fan Speed
Outdoor Fan Speed OF Outdoor Fan Speed
EXV Opening Angle LA EXV Opening Angle
Compressor Continuous Running Time CT Compressor Continuous Running Time
Compressor Stop Issues ST Compressor Stop Issues
ENQUIRY INFORMATION DISPLAY VALUE MEANING REMARK
T1,T2,T3,T4,
T2B,TP,TH,
Targeted
Frequency,
Actual Frequency
- 1F,- 1E,- 1d,- 1c,- 1
b,- 1A
- 25,- 24,- 23,- 22,- 21,- 20 1. All the displaying
temperature is actual value.
2. Temperature is _C no
matter the remote.
3. T1,T2,T3,T4,T2B display
range:- 25~ 70,
4. TP display range:- 20~ 130.
5. Frequency display range:
0~159HZ.
6. If the range, it displays the
maximum value or minimum
value.
- 19—99 - 19—99
A0,A1,
A9 100,101,109
b0,b1,
b9 110,111,119
c0,c1,
c9 120,121,129
d0,d1,
d9 130,131,139
E0,E1,
E9 140,141,149
F0,F1,
F9 150,151,159
Indoor fan speed/
Outdoor fan speed
0OFF
1,2,3,4
Low speed, Medium speed, High
speed, Turbo
For some big capacity motors
14- FF
Actual fan speed = Display value
turns to decimal value and then
multiply 10. The unit is RPM.
For some small capacity motors
the
display value is 14-FF (hexadecimal),
the corresponding fan speed range is
from 200-2550 RPM.
EXV opening angle 0- FF
Actual EXV opening value =
Display value turns to decimal
value and then multiply 2.
Compressor continuous
running time
0- FF 0- 255 minutes
If the actual value exceeds the
range, it displays the maximum
value or minimum value.
Compressor stop causes 0- 99
For a detailed meaning, please
consult with an engineer
Decimal display
Reserve 0- FF
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Bryant 38MAR User manual

Category
Split-system air conditioners
Type
User manual

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