Samsung RD040MHXCA Series, RD050MHXCA Series Installation Manual

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Contents

 SAFETY PRECAUTIONS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

 PREPARING THE INSTALLATION





Locating the Units

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

 INSTALLING THE UNIT





Installing the Refrigerant Pipe Work

. . . . . . . . . . . . . . . . . . . . . . . . . . .

14





Electrical Connections

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

25

 COMPLETING THE INSTALLATION





Setting the Option Switch and Function of the Keys

. . . . . . . . . .

31





Pump Down Procedure

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

33





Completing the Installation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36





Final Checks and Trial Operation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36





Pump Down Procedure (When removing the product)

. . . . . . . .

37





Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

38

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 R410a refrigerant is used for Super FJM air conditioner.

- When using R410a, moisture or foreign substances may affect to the capacity and reliability of
the product. Safety precautions must be taken when installing the refrigerant pipe.

- The design pressure of the unit is 4.1MPa(594.6psi). Select appropriate material and thickness
according to the regulations.

- R410a is a quasi-azeotrope of two refrigerants.
Make sure to charge liquid one when adding refrigerant.
If you charge gaseous refrigerant, it may affect the capacity and reliability of the product as
a result of change formation of the refrigerant.

 Connect only the indoor units fit on R410a refrigerant. Check whether the indoor units can be

connected with the product’s catalogue.
(When incorrect indoor units are connected, they cannot operate normally.)

 When installing, use tools and materials for R410a only. If you use tools and materials for R22,

there is potential risk of bursting, injury, electric shock and fire because the pressure of R410a is
higher than the pressure of R22(conventional).

Safety Precautions

 You must install the product by qualified installer. If you install the product on your own or by unqualified

person, Samsung is not responsible for any damages which may occur due to incorrect installation.

 Make sure to read the following safety precautions carefully before installation.
 Make sure to observe the cautions specified in this manual.
 Conduct a test run of the unit after installation and then explain all system functions to the owner.

 Follow IEC (International Electrotechnical Commission) standards for the power input and

ISO (International Standards Organization) standards for input current.

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WARNING

Hazards or unsafe practices that may result in severe personal injury or
death.

 Installation must be carried out by a qualified installer. Do not attempt to repair, move, modify or reinstall

the unit on your own since such act may cause fire, electric shock or water leakage.

 Install the unit in a place where it is strong enough to hold the product weight. When installed in place

where it is not strong enough to withhold the product weight, the unit could fall and cause injury.

 The unit should be installed in accordance with the National Electrical regulations. Check if the voltage

and the frequency of the main power supply are those required for the unit to be installed and check
the connection.

Do not share the power outlet with other appliances. Incomplete connection, defective

insulation or exceeding the permissible current may cause electric shock or fire.

 Use the specified wires to connect the indoor and outdoor units securely and attach the wires firmly to

the terminal block connecting sections so that the pressure is not applied to the sections. Inappropriate
connection and fixing could cause fire.

 Attach the electrical cover to the indoor and outdoor unit securely without any gaps. If there are any

gaps, there is potential risk of fire or electric shock due to dust or water.

 Make sure to use the part provided or specified parts for the installation work. The use of defective parts

could cause an injury or leakage of water due to a fire, an electric shock, the unit falling, etc.

 Make sure that the refrigerant gas does not leak after completing the installation. If the refrigerant gas of

the indoor unit leaks and comes into contact with the fan heater, space heater or stove, harmful gas will
be generated.

 Ensure that the national safety code requirements have been followed for the main supply circuit. Ensure

that a proper ground wire is in place. Do not connect the ground to a gas pipe, water pipe, lightning rod
or telephone grounding. Defective grounding could cause electric shock.

 Do not install the unit in a place with direct sunlight, dangerous substances or where it is exposed to

inflammable gas leakage to prevent explosion, fire or personal injury.

 Perform the installation securely referring to the installation manual. Incomplete installation could cause

personal injury due to fire, electric shock and water leakage or from the unit falling.

 Check first the following situations before starting the operation during the installation.

- The pipe must be properly connected and make sure there is no leakage.

- Service valves must be open. If compressor is operated with the service valve closed, excessive pressure
may damage parts of the compressor.

If leakage occurs on any of the connection, air inflow may also cause excessive pressure that could lead

to explosion.

 Stop the compressor before disconnecting the refrigerant pipe for pump-down operation. If you

disconnect the refrigerant pipe while compressor is operating with service valve open, air inflow will
cause excessive pressure in the refrigerant cycle that could lead to explosion and personal injury.

 Do not assemble the power cord on your own, use two cables together to extend the cable length or

tangle the cable. Bad connection, isolation and over voltage may cause fire or electric shock.

 Make sure to turn off the main power when setting up the indoor unit electrical circuit or power cords.

There is a risk of electric shock.

 Make sure that proper circuit breaker and safety switches are installed. Install a ground leakage breaker

depending on the installation place (where it is humid). If not, it may cause electric shock.

 Do not install the unit by yourself (owners). Incorrect installation of the unit could cause injury due to

fire, electric shock and water leakage or from the unit falling. Consult a dealer or a qualified installer.

 Use the unit on a single outlet circuit. Do not share the power outlet with other appliances. Obtain the

consent by a qualified installer before connecting the unit to the power supply system. An all pole
disconnection from the power supply must be incorporated in the fixed wiring with a contact opening
of >3mm(1/8in)

.

 Manufacturer is not responsible for accidents due to incorrect installation.
 When you install the air conditioner in a small room, you consider a proper ventilation to prevent a

leakage level within the maximum permissible limit.

- In that case, you may die from suffocation by some possibility.

 Fix the outdoor unit securely to prepare against strong wind or earthquake.

- If the outdoor unit is not properly fixed, it turns over and accidents may occur.

Safety Precautions (Continued)

WARNING

 Hazards or unsafe practices that may result in severe personal injury or death.

CAUTION

 Hazards or unsafe practices that may result in minor personal injury or property damage.

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CAUTION

Hazards or unsafe practices that may result in minor personal injury or
property damage.

 Perform the drainage/piping work securely according to the installation manual. If not, water could

drop from the unit and household goods could get wet and damaged.

 Fasten a flare nut with a torque wrench as specified in this installation manual. When fastened too

tight, a flare nut may break after a long period of time and cause refrigerant leakage.

 Wear thick gloves during the installation process. If not, personal injury may occur due to the air

conditioner parts.

 Be careful not to touch the outdoor unit inlet or aluminum pins. You may get personal injury.
 Do not install the outdoor unit in a place where animals could live. If an animal get contact with the

electric parts, damage or fire may occur. In addition ask the customer to maintain a clean installation
place around it.

 After completing the installation run the trial operation. If no error occurs, explain to the customer

how to use and clean the air conditioner according to the user’s manual. In addition give the
installation manual and the user’s manual to the customer.

 Check the unit for damage that may have taken place during transportation and do not install or use

damaged equipment.

 All of the manufacturing and packaging material used for your new appliance are compatible with

the environment and can be recycled.

 Dispose of the packaging material in accordance with the local requirements.
 This product is an air conditioning system and contains a coolant that must be recovered and

disposed of in an appropriate way by qualified personnel. At the end of the life cycle, take it to a
proper recycling or disposal center or return it to the dealer so that it can be disposed correctly.

 Do not connect the heater to the outdoor unit and do not install remodeled duct as you please.

- The capacity of the air conditioner may reduce, electric shock or fire may occur and it has a chance of
occurrence of and accident like electric shock or fire.

 Make sure that the condensed water dripping from the drain hose runs out properly and insulate the

drain pipe so that frost does not generate.

- Household goods may get wet if the drain pipe is not properly installed.

 Install the power cable and communication cable of the indoor and outdoor unit at least 1.5m(5ft)

away from electric appliances.

- Noise may hear depending on the electric wave though the cables are installed away from electric
appliances.

 Install the indoor unit away from lighting apparatus using the ballast.

- If you use the wireless remote control, it may not operate normally.

 The air conditioner should be used only for the applications for which it has been designed: the

indoor unit is not suitable to be installed in areas used for laundry.

 Our units must be installed in compliance with the spaces indicated in the installation manual to

ensure either accessibility from both sides or ability to perform routine maintenance and repairs. The
units’ components must be accessible and that can be disassembled in conditions of complete safety
either for people or things.

For this reason, where it is not observed as indicated into the Installation Manual, the cost necessary
to reach and repair the unit (in safety, as required by current regulations in force) with slings, trucks,
scaffolding or any other means of elevation won’t be considered in-warranty and charged to end user.

 If any gas or impurities except R410a refrigerant come into the refrigerant pipe, serious problem may

occur and it may cause injury.

 Install the cables with supplied cables firmly. Fix them securely so that external force is not exerted to

the terminal board.

- If the connection or fixing is incomplete, it can cause trouble with a heat generation, electric shock or

fire and so on.

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Locating the Units

PREPARING THE INSTALLATION

Decide the installation location regarding the following condition and obtain the user’s approval.

 The outdoor unit must not be placed on its side or upside down, as the compressor lubrication oil will run

into the cooling circuit and seriously damage the unit.

 Choose a location that is dry and sunny, but not exposed to direct sunlight

or strong winds.

 Do not block any passageways or thoroughfares.
 Choose a location where the noise of the air conditioner when running and the discharged air do not

disturb any neighbours.

 Choose a position that enables the pipes and cables to be easily connected to the indoor unit.
 Install the outdoor unit on a flat, stable surface that can support its weight and does not generate any

unnecessary noise and vibration.

 Position the outdoor unit so that the air flow is directed towards the open area.
 Place the outdoor unit where there are no plants and animals because they may cause malfunction of

outdoor unit.

 Maintain sufficient clearance around the outdoor unit, especially from a radio, computer, stereo system,

etc.

 When installing the outdoor unit near seashore, make sure it is not directly exposed to sea breeze.

If you can not find a adequate place without direct see breeze, make sure to apply anti-corrosion coating
on the heat exchanger.

 Do not install the air conditioner in following places.

- The place where there is mineral oil or arsenic acid.
There is a chance that parts may get damaged due to burned resin.
The capacity of the heat exchanger may reduce or the air conditioner may be out of order.

- The place where corrosive gas such as sulfurous acid gas generates from the vent pipe or air outlet
The copper pipe or connection pipe may corrode and refrigerant may leak.

- The place where there is a danger of existing combustible gas, carbon fiber or flammable dust.
The place where thinner or gasoline is handled.

Deciding on Where to Install the Outdoor Unit

Do not install the outdoor unit in a snowy and cold area (low temperature and high humidity area

- where the temperature is below -7

°C(19.4°F) and humidity is higher than 85%) because according
to operation condition (defrost, etc.), ice may be formed in the drain route. If the ice is accumulated,
it may cause critical damage to the product.
ex) lakeside of cold area in winter time, seashore, alpine region and etc.

CAUTION

- Install the outdoor unit in a place (such as near buildings etc.) where it can be prevented from sea
breeze which can damage the outdoor unit.

- If you cannot avoid installing the outdoor unit by the seashore, construct a protection wall around to
block the sea breeze.

- Install the outdoor unit in a place where water can drain smoothly.

 Protection wall should be constructed with a solid

material such as concrete to block the sea breeze and
the height and the width of the wall should be 1.5 times
larger than the size of the outdoor unit. Also, secure
over 700mm(2.3ft) between the protection wall and the
outdoor unit for exhausted air to ventilate.

Sea

Sea
breeze

Outdoor
unit

Sea

Sea
breeze

Outdoor
unit

Sea

Sea
breeze

Outdoor
unit

Protection wall

 If you cannot find a place satisfying above conditions, please contact manufacturer. Make sure to clean

the sea water and the dust on the outdoor unit heat exchanger.

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PREPARING THE INSTALLATION

 If the outdoor unit is installed at a height, ensure that its base is firmly fixed

in position.

 Make sure that the water dripping from the drain hose runs away correctly

and safely.

 If the paint on the cabinet comes off during installation, make sure to

re-paint or protect damaged area to prevent rust. If the cabinet becomes
rusted, it may reduce durability of the outdoor unit.

You have just purchased a system air conditioner and it has been

installed by your installation specialist.

This device must be installed according to the national electrical rules.

With an outdoor unit having net weight upper th

an 60kg(132.3lb), we

suggest do not install it suspended on wall, but considering floor

standing one.

CAUTION

Outdoor
Unit

Indoor Unit

Remote Control

1m(3.28ft)

or more

1m

(3.28ft

)

or more

1.5m(5ft) or more

1.5m(5ft) or more

3

m(10ft) or more

Breaker

Stereo

Breaker

1.5m(5ft) or more

 Avoid a place that may disturb your neighbor. Noise may occur from the

outdoor unit and the discharged air may run into the neighborhood.
(Be careful of the operation time in a residential area.)

 Install the outdoor unit on a hard and even area that can support its weight.
 Choose a flat place that rainwater does not settle or leak.
 Choose a place avoiding strong winds.
 Maintain sufficient space for repairs and service.
 Choose a place where you can easily connect the pipes and cables to the indoor

unit.

 Make sure that the condensed water dripping from the drain hose runs out

properly and safely.

 If you install the outdoor unit by the sea or a spa, concern about corrosion.
 Build a support where may have a heavy snow so that the air intake is not

blocked by snow.

 Install a protective safety fence to eliminate the possibility of falling.

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Locating the Units

(Continued)

 Observe the clearances and dimensions as seen below when installing the outdoor unit.
 If you install several outdoor units simultaneously, observe the space for ventilation and free airflow.

If the space for ventilation is insufficient, the air conditioner may be inefficient.

 SAMSUNG logo is attached on the front side of the outdoor unit.

Space Requirements for Outdoor Unit

When installing 1 outdoor unit

300(12)

or more

1500(60) or more

1500(60)

or more

300(12)

or more

 When the walls are blocking front and

the rear side of the outdoor unit

500(20) or more

300(12)

or more

 The upper part of the outdoor unit and

the air outlet is opposite the wall

1500(60) or more

2000(80) or more

 The upper part of the outdoor unit

and the air outlet is toward the wall

300(12) or more

150(6) or more

600(24) or more

 When 3 sides of the outdoor unit

are blocked by the wall

 When the air outlet is toward the wall When the air outlet is opposite the wall

Unit : mm(inch)

 Figure Description

Top view Side view

Front side:
Air outlet

Back side:
Air intake

Back side: Air intake

Front side: Air outlet



, Air flow direction.

PREPARING THE INSTALLATION

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When installing more than 1 outdoor unit

Unit : mm(inch)

1500(60)

or more

 When the air outlet is toward the wall

300(12)

or more

300(12) or more

1500(60)
or more

600(24) or more 3000(120) or more 300(12)

or more

3000(120) or more

600(24) or more 600(24) or more

300(12)

or more

1500(60)

or more

600(24) or more 600(24) or more

600(24) or more

 When 3 sides of the outdoor unit are blocked by the wall

 When the walls are blocking front and the rear side of the outdoor units

 When front and rear side of the outdoor unit is toward the wall

PREPARING THE INSTALLATION

600(24)
or more

600(24)
or more

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Locating the Units

(Continued)



Install the indoor unit only for R410a.

Selecting Outdoor Unit Combination

When moving with a crane or straps



 Select the moving route.

 

Secure the strength of the carrying path to resist against the weight of the outdoor unit.

 

Do not slant the product more than 30˚ when carrying it. (Do not lay the product down sideways.)

 

The surface of the heat exchanger is sharp. Be careful not to be get injury while moving.

Moving the Outdoor Unit

Outdoor unit

(Series)

Capacity of the outdoor

unit (Btu/h)

Maximum of connected

indoor units

Total capacity of connected

indoor units

(Btu/h)

RD040MHXCA 36,000 6 20,000~45,000

RD050MHXCA 48,000 8 27,000~60,000

 

You may connect indoor units within 50~130% of the outdoor unit capacity.
Smallest indoor unit(7,500Btu/h) was used to calculate ‘Maximum of connected indoor units’.

 

Connect maximum 6 to 8 indoor units to the selected outdoor unit.

 

Total capacity of connected indoor units must be within the capacity of outdoor unit.

 

If all indoor units operate simultaneously when total capacity of indoor units exceeds 100% of the outdoor
unit, actual capacity of each indoor unit may be reduced a little as compared with its rated capacity.

PREPARING THE INSTALLATION

General Tools

Tools for test operations

 Vacuum Pump(Backward flowing prevention)  Manifold Gauge
 Stud Finder  Torque Wrench  Pipe Cutter
 Reamer  Pipe Bender  Spirit Level
 Screw Driver  Spanner  Drill
 L Wrench  Measuring Tape

 Thermometer  Resistance Meter  Electroscope

Tools Required for Installation

 When the moving distance of the product is close enough for

installation personnel to carry

- 2 people should move the product using the carry handle as shown in
the picture.

- Be careful not to damage the heat exchanger.

- Be careful not to get injured by the sharp edge of the heat exchanger.

When moving by installation personnel

Wire rope/straps

Wood palette

 In case of placing the outdoor unit on a high ground such as rooftop

- Fasten the wire rope as seen in the picture.

- Move the product with its package on, to prevent any damages
caused by the rope.

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PREPARING THE INSTALLATION

1

Disassemble the three screws (with an electric driver) which fixes wood
palette.

2

Disassemble the bottom-left screw with monkey spanner.
 Do not remove guard fan.

3

After removing the wood palette, move the outdoor unit to the installation
place.

4

Fasten the bottom-left screw with monkey spanner first, and then fasten the
other three anchor bolts.

Disassembling the Leg Base and Wood Palette /
Fastening the Anchor Bolt

Monkey spanner

Wood palette

Screw

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PREPARING THE INSTALLATION

Locating the Units

(Continued)



Install the outdoor unit higher than 150mm(6in) from the base surface and
install the drain hole to connect the pipe to the drainage.



If forward fan outdoor unit is installed where has average fallen snow
150mm(6in) over, outward duct should be attached to the outdoor unit.



The concrete foundation should be 1.5 times larger than bottom of the outdoor unit.



When heating, condensed water may be generated. Pay attention to
waterproof and drainage of the concrete foundation where the outdoor unit is
installed. (An ice road may form on the base surface in winter

.)



Make up for wire mash or steel bar so that the outdoor unit is not damaged or
broken when installing concrete foundation.



When installing the outdoor units in same place simultaneously, install the
H beam inside concrete foundation. (When installing a number of outdoor unit,
you can install it on the concrete foundation

.)



Install the H beam(150mm x 150mm x t10 (6inch x 6inch x t 3/8 inch) : basic
specification) to jut out from the concrete foundation.

 After installing the H beam, apply corrosion protection.


Install a square pad(t=20mm(3/4 inch) or more) to prevent vibration of the outdoor
unit delivering to the base surface when installing the concrete for the outdoor
unit.



Place the outdoor unit on the H beam and fix it with the bolt, nut and washer.

Installing the Outdoor Unit



Do not install the outdoor unit on a wood palette.



Fix the outdoor unit completely to the base surface with anchor bolts.



The manufacturer is not responsible for the damage occurred by not
keeping standard of the installation.

CAUTION

Outdoor unit

Anchor bolt

Nut, Spring
washer

H beam

Square pad

A+10~20mm(3/8~3/4 inch) or more

A

20mm

(3/4 inch)

75mm(3inch)

< When installing on the ground >

Drain hole 150(6) or more

< When installing on the roof >

Install the outdoor unit
horizontally on
the ground

150(6) or more

 Base mount construction

Unit : mm(inch)

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PREPARING THE INSTALLATION

Outdoor unit base mount and anchor bolt position

When tightening the anchor bolt
Tighten the rubber washer to prevent the outdoor unit bolt connection part

from corroding.

CAUTION

Rubber washer



When installing 1 outdoor unit

Outdoor unit

(Rear side)

More than
1/50 slope

Open to air

Drain
plug



When installing more than 1 outdoor unit

 Open the upside of connected parts of outdoor units to prevent inner pressure.
 Do not place a trap on the concentrated pipe. And install the drain pipe horizontally with a slope of 1/50 or more.
 Insulate the drain pipe and drain plug by using the insulation over 10mm(3/8inch).
 Install a self-regulation heat cable to prevent the drain pipe from freezing.

Installing the drain pipe

Unit : mm(inch)
Anchor bolt position
(ø7, 4 holes )

 Parts shown in the picture is where the copper pipe may be passing by or the external plate may be near the copper

pipe. When using screw for installing the air direction changing device such as heating air cover, check and make sure
that it does not damage the copper pipe.

Caution When Installing Cover for Heating Air Direction Change

< Internal view from bottom>

Iron washer

Outdoor unit

(Rear side)

More than 1/50 slope

Open to air

Drain
plug

Outdoor unit

(Rear side)

Outdoor unit

(Rear side)

Drain pipe covered with

insulation

Drain pipe

Insulation

670(26-3/8)

932(36-11/16)

375(14-3/4)

403(15-7/8)

427(16-13/16)

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