Samsung Max mini-split units Quick start guide

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BASIC TECHNICAL INFORMATION FOR:

SAMSUNG MAX

MINI-SPLIT UNITS

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208/230V

System

Breaker

Separate all Power &

Communications Wiring by 2”

Indoor Unit

(Ground)

Outdoor

Unit

POWER VOLTAGE:

Power Voltage: 208/230V - 1 Ph - 60 Hz

Control Voltage: DDC Fuzzy Logic

Main Breaker Size: 15 A

CHARGING:

Unit is charged for: 25 ft. (Factory Charge 31.7oz. R410A)

Additional Charge of R410A: 0.16 oz./ft. over 25 ft.

CHARGE FOR LINE RUN LENGTHS:

Length: 25 35 45 50

Added Charge (oz.): 0 1.6 3.3 4.0

INTERCONNECTING WIRING:

Gauge:

14 AWG Power & 16 AWG Shielded Communication

Number of Interconnecting Wires: 3x14 AWG Power & 2x16 AWG Control = 5 Total

LINE SIZES:

“Liquid” (expanded gas) line: 1/4”

Suction: 3/8”

BOTH LINES MUST BE INSULATED SEPARATELY

Samsung MAX 12,000 BTU Mini-Split

Indoor Unit: #700550 (AQN12VFUAGM)

Outdoor Unit: #700552 (AQX12VFUAGM)

INTERCONNECT LENGTH:

Maximum/Minimum Length: 50 feet / 10 feet

Vertical Lift: 26 feet

Note: Condenser can be above or below evaporator

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208/230V

System

Breaker

Separate all Power &

Communications Wiring by 2”

Indoor Unit

(Ground)

Outdoor

Unit

POWER VOLTAGE:

Power Voltage: 208/230V - 1 Ph - 60 Hz

Control Voltage: DDC Fuzzy Logic

Main Breaker Size: 20 A

CHARGING:

Unit is charged for: 25 ft. (Factory Charge 58.1oz. R410A)

Additional Charge of R410A: 0.16 oz./ft. over 25 ft.

CHARGE FOR LINE RUN LENGTHS:

Length: 25 35 45 55 65 75 85 95 98

Added Charge (oz.): 0 1.6 3.2 4.8 6.4 8.0 9.6 11.2 11.68

INTERCONNECTING WIRING:

Gauge:

14 AWG Power & 16 AWG Shielded Communication

Number of Interconnecting Wires: 3x14 AWG Power & 2x16 AWG Control = 5 Total

LINE SIZES:

“Liquid” (expanded gas) line: 1/4”

Suction: 5/8”

BOTH LINES MUST BE INSULATED SEPARATELY

Samsung MAX 24,000 BTU Mini-Split

Indoor Unit: #700554 (AQN24VFUAGM)

Outdoor Unit: #700556 (AQX24VFUAGM)

INTERCONNECT LENGTH:

Maximum/Minimum Length: 98 feet / 10 feet

Vertical Lift: 50 feet (Trap required at 26 ft.)

Note: Condenser can be above or below evaporator

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208/230V

System

Breaker

Separate all Power &

Communications Wiring by 2”

Indoor Unit

(Ground)

Outdoor

Unit

POWER VOLTAGE:

Power Voltage: 208/230V - 1 Ph - 60 Hz

Control Voltage: DDC Fuzzy Logic

Main Breaker Size: 30 A

CHARGING:

Unit is charged for: 25 ft. (Factory Charge 88.1oz. R410A)

Additional Charge of R410A: 0.43 oz./ft. over 25 ft.

CHARGE FOR LINE RUN LENGTHS:

Length: 25 35 45 55 65 75 85 95 98

Added Charge (oz.): 0 4.3 8.6 12.9 17.2 21.5 25.8 30.1 32.25

INTERCONNECTING WIRING:

Gauge:

14 AWG Power & 16 AWG Shielded Communication

Number of Interconnecting Wires: 3x14 AWG Power & 2x16 AWG Control = 5 Total

LINE SIZES:

“Liquid” (expanded gas) line: 1/4”

Suction: 5/8”

BOTH LINES MUST BE INSULATED SEPARATELY

Samsung MAX 36,000 BTU Mini-Split

Indoor Unit: #700558 (AQN36VFUAGM)

Outdoor Unit: #700560 (AQX36VFUAGM)

INTERCONNECT LENGTH:

Maximum/Minimum Length: 164 feet / 10 feet

Vertical Lift: 98 feet (Trap required at 26 ft.)

Note: Condenser can be above or below evaporator

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Samsung MAX Wired Controller (optional)

Part: #700574

sub-PCB INSTALLATION INSTRUCTIONS

• The sub-PCB installs inside a single MAX indoor unit (Part #700550, #700554

or #700558). It is required to connect and control an indoor unit with the

Samsung wired controller (part #700578).

• Provides 12V DC to the Samsung wired controller (part #700578).

• Required to control MAX models with Samsung central control options

(upper level control).

• Includes sub-PCB, 4 crimp wire connectors, wire harness and sub-PCB cover.

sub-PCB Wire Harness

sub-PCB

1. With the power off, open the front panel of the MAX indoor unit. Remove the

main PCB cover by removing the screw in the bottom corner.

• Make sure the power is turned

off to the outdoor unit before

opening the indoor unit PCB

cover or cabinet.

• The front panel of the MAX

indoor unit is easily removed to

make installation easier and to

prevent damage to the panel.

INSTALLATION NOTES:

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(continued...)

sub-PCB INSTALLATION INSTRUCTIONS

2. Inside the unit, towards the bottom of the cabinet you will find a PCB wire

harness. Gently pull this wire upward and out of the unit.

3. Connect the PCB to the PCB wire harness (a) and to the sub-PCB wire

harness (b).

NOTE: the sub-PCB wire harness is included with the wired controller.

(a) (b)

4. Remove the protective tape (a) and slide all connected wires into the

groove beside the sub-PCB mounting location (b). Snap the sub-PCB cover

over the installed sub-PCB.

(a) (b) (c)

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(continued...)

sub-PCB INSTALLATION INSTRUCTIONS

6. Tuck the connected wires into the unit cabinet and replace the main PCB cover

and front panel (if removed). Apply power and proceed with programming

your controller (temperature sensing location, time, Fahrenheit, etc.)

5. With the wired controller wires already installed, pull the wires through the

front of the indoor unit. Cut the 2 small plastic connectors off the ends of the

sub-PCB wire harness (the ends of the red/blue and yellow/orange wires).

Connect F3/F4 and V1/V2 between the indoor unit and the wired controller

as pictured below.

RED = F3 BLUE = F4 ORANGE = V1 YELLOW = V2

Remove

Wired controller wire

(ﬁeld provided) PCB wire

harness

connection

plug

NOTE: The wired controller does not include

a connection wire. This wire field is provided.

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BASIC INSTALLATION TIPS

SIZING

Basic sizing is 200-250 sq. ft. per 12,000 BTU/h.

Computer/Data Rooms:

Basic sizing is 400-450 sq. ft. per 12,000 BTU/h.

Commercial/Retail:

Basic sizing is 550-600 sq. ft. per 12,000 BTU/h.

Residential:

LOW AMBIENT COOLING

As standard, these units have a low ambient cooling capability down to 10ºF

outdoor temperature.

Computer/Data Rooms and Commercial:

THESE UNITS CANNOT OPERATE IN COOLING BELOW 10ºF AMBIENT

TEMPERATURE UNLESS EQUIPPED WITH AN APPROVED WIND BAFFLE TO

PROTECT THE OUTDOOR UNIT. SHOULD A WIND BAFFLE BE INSTALLED, UNIT

PERFORMANCE CAN BE EXPECTED DOWN TO 0ºF OUTDOOR TEMPERATURE.

PLEASE NOTE THAT IF A PROLONGED OFF CYCLE IS EXPERIENCED IN

OUTDOOR TEMPERATURES BELOW 10ºF, THE UNIT MAY NOT RESTART UNTIL

THE TEMPERATURE RISES ABOVE 14ºF.

R410A REFRIGERANT

Higher pressures (close to double) than R22, but the operating temperatures

are very similar to those with R22.

For example:

A saturated suction temperature of 45ºF = Suction Pressure of 130 psig

R410A:

A saturated suction temperature of 45ºF = Suction Pressure of 76 psig

R22:

• Minimize the time that the system is open to the atmosphere.

• Ensure that a deep vacuum is pulled on the system - 200 microns or less.

• Do not install any sight glasses or filter driers in the line set.

NOTE: It is not necessary to remove refrigerant for line sets shorter than

the specified length of the factory charge.

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(continued...)

BASIC INSTALLATION TIPS

The gauge connection on the Samsung units is a 5/16” male, so an adapter is

required to connect a standard North American set of R410A gauges to the

Samsung unit.

R410A REFRIGERANT (continued...)

UNIT LOCATION

High Wall units should be located a minimum of 4ft from the ground. Also, some

of the indoor unit clearances listed in the specific unit installation manuals can

be decreased to a minimum clearance of 2 inches from the ceiling to the top

of the unit, while still maintaining unit performance and efficiency levels.

Indoor Unit:

Ensure that no obstacles are directly in front of the unit for a minimum distance

of 10-12ft on the MAX and Vivace 12,000 BTU units, 20-25ft on the MAX and

Vivace 24,000 BTU units and 25-30ft on the MAX 36,000 BTU unit. This will prevent

bounce back of the conditioned air and will ensure adequate airflow is

maintained, keeping the indoor coil warm and allowing the system to run to

full capacity when necessary.

If any system is prevented from running at full capacity regularly, whether it

is from impeded airflow or over sizing, it will have an adverse affect on the

system’s ability to properly return oil to the compressor. Over time this will cause

inconsistent performance, error codes, and premature failure of components.

Ceiling Cassette units must have a Minimum Distance of 5ft from the louver

opening to any wall or other obstacle for the same reasons as listed above.

Ensure line set runs are adhered to, it is required that a minimum line set length

of 10 ft. be maintained. Exceeding the published maximum line set length is

not permitted, under any circumstance.

Outdoor Unit:

Since these units are heat pumps, you should raise the outdoor unit 4-6” from

the pad/ground to help drain the unit after a defrost cycle. Also, ensure the

unit is capable of operating in desired ambient temperatures. As previously

stated, if the outdoor coil temperature is allowed to drop below 10ºF, the

system will lock out, not restarting until that temperature rises above 14ºF.

Minimum clearances of 6” behind and 24” in front of the outdoor unit must

also be maintained. Enough clearance must be maintained from the sides to

accommodate service of the unit.

Also, keep in mind that since the expansion valve is located in the outdoor

unit, the line set is merely an extension of the indoor coil and, although

insulated, the longer the line set run is, the more likely there will noticeable loss

of capacity.

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