Samsung RC***MHXGA User manual

RCMHXGA
RCMHXEA
Air to Water Heat Pump
Mono Outdoor Unit
installation manual
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IFSE P G RD

2
Contents
Safety precautions
Warning
 Carefully read the content of this manual before installing the air to water heat pump and store the manual in a safe place in order
to be able to use it as reference after installation.
For maximum safety, installers should always carefully read the following warnings.
Store the operation and installation manual in a safe location and remember to hand it over to the new owner if the air conditioner
is sold or transferred.
 Store the user and installation manual in a safe location and remember to hand it over to the new owner if the air to water heat
pump is sold or transferred.
This manual explains how to install Air-Water Heat Pump. The use of other types of units with different control systems may
damage the units and invalidate the warranty.The manufacturer shall not be responsible for damages arising from the use of non
compliant units.
The air conditioner is compliant with the requirements of the LowVoltage Directive (72/23/EEC), the EMC Directive (89/336/EEC)
and the Directive on pressurized equipment (97/23/EEC).
 The manufacturer shall not be responsible for damage originating from unauthorized changes or the improper connection of
electric and hydraulic lines. Failure to comply with these instructions or to comply with the requirements set forth in the“Operating
limits”table, included in the manual, shall immediately invalidate the warranty.
Do not use the units if you see some damages on the units and recognize something bad such as loud noisy, smell of burning.
In order to prevent electric shocks, fires or injuries, always stop the unit, disable the protection switch and contact SAMSUNG’s
technical support if the unit produces smoke, if the power cable is hot or damaged or if the unit is very noisy.
Always remember to inspect the unit, electric connections, refrigerant tubes and protections regularly. These operations shall be
performed by qualified personnel only.
 The unit contains moving parts and electrical parts, which should always be kept out of the reach of children.
Carefully follow the precautions listed below because they are essential to guarantee the safety of the equipment.
• Always disconnect a power supply of Air-Water Heat Pump before servicing it or accessing
components inside the unit.
• Verify that installation and testing operations shall be performed by qualified personnel.
• To prevent serious damage on the system and injuries to users, precautions and other notices
shall be observed.
WARNING
Safety Precautions...................................................................................................................................................................................................................2
Product Specifications ..........................................................................................................................................................................................................4
Application Examples ......................................................................................................................................................................................................... 7
Main Components ................................................................................................................................................................................................................. 9
Functional Diagram ............................................................................................................................................................................................................ 13
Installing the Unit ............................................................................................................................................................................................................... 15
Piping Work............................................................................................................................................................................................................................. 22
Wiring ...................................................................................................................................................................................................................................... 29
Testing operations ............................................................................................................................................................................................................. 35
Trouble shooting ................................................................................................................................................................................................................ 37
Maintenance ......................................................................................................................................................................................................................... 38

ENGLISH
3
Do not attempt to repair, move, alter or reinstall the unit by unauthorized personnel, these operations may cause
product damage, electric shocks and fires.
Do not place containers with liquids or other objects on the unit.
All the materials used for the manufacture and packaging of the air to water heat pump are recyclable.
The packing material and exhaust batteries of the remote controller(optional) must be disposed of in accordance with local
regulations.
The air to water heat pump containing a refrigerant must be disposed in authorized center or returned to retailer as special wastes.
Wear protective gloves to unpack, move, install, and service the unit to avoid your hands being injured by the edge of the parts.
Do not touch the internal parts (water pipes, refrigerant pipes, heat exchangers, etc) while running the units.
And if you need to adjust and touch the units, have enough time for the unit can be cooled and be sure to wear protective
gloves.
In case of refrigerant leakage, try to avoid getting in contact with the refrigerant because this could result in severe wounds.
When you install the Air to water heat pump in a small room, you must 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.
Make sure to safely dispose of packing materials. Packing materials, such as nails and other metal or wooden pallets may cause
children get injured.
Inspect the product shipped and check if damaged during transport. If the product has some damages,
DO NOT INSTALL and immediately discuss about the damages with the carrier or retailer (if the installer or the authorized
technician has collected the material from the retailer.)
Our units shall be installed in compliance with the spaces described in the installation manual, to ensure accessibility from both
sides and allow repairs or maintenance operations to be carried out.
If the units installed without complying with procedures described in manual, additional expenses can be asked because special
harnesses, ladders, scaffolding or any other elevation system for repair service will NOT be considered part of the warranty and will
be charged to the end customer.
Always make sure that the power supply is compliant with local safety standards.
Verify that the voltage and frequency of the power supply comply with the specifications and input power is sufficient to ensure
the operation of any other domestic appliance connected to the same electric lines.
Always verify that the cut-off and protection switches are suitably selected.
Always verify that electric connections (cable entry, section of leads, protections…) are compliant with the electric specifications
and with the instructions provided in the wiring scheme. Always verify that all connections comply with the standards applicable
to the installation of air to water heat pumps.
Devices disconnected from the power supply should be completely disconnected in the condition of overvoltage category.
Do not connect the earth wire to the gas pipe or water pipe, lighting rod, surge absorber, or telephone earth wire.
If earthing is not complete, it may cause an electric shock or fire.
Be sure to install both an earth leakage detector and circuit breaker with specified capacity in accordance with relevant local
and national regulations.
- If it is not installed properly, it may cause electric shocks and fire.
Make sure that the condensed water runs well out of the unit at low ambient temperature. Drain pipe and cond heater can frost/
ice can not grow. If drain work is not effective for releasing condensed water, it can make the units get damaged by massive ice and
system can be stop , covered by ice.
Install the power cable and communication cable of the indoor and outdoor unit at least 1m away from the electric appliance.
Protect the unit from rats or small animals. If an animal makes a contact with the electric parts, it can cause malfunctions,
smoke or fire. Please instruct the customer to keep the area around the unit clean.

4
Product Specifications
Line-up Remark
Heat
Pump Units
Chassis
-
Model Name RC090MHXEA
RC120MHXEA
RC120MHXGA
RC140MHXEA
RC140MHXGA
RC160MHXEA
RC160MHXGA
Auxiliary
Parts
MIM-E03A Requisite
Standard models:
NH200CHXEA
NH300CHXEA
Solar connected
NH200CHXES
NH300CHXES
Option
Product Line-up
Accessories
Keep supplied accessories until the installation is finished.
Hand the installation manual over to the customer after finishing installation.
The quantities are indicated in parentheses.
Installation manual (1) Drain plug (1) Fastener-nut(1) Rubber-cover wire(2) Drain cap (1)
Control Kit
Domestic Hot
Water tank

ENGLISH
5
Product Specifications
Type Unit RC120MHXEA
RC120MHXGA
RC140MHXEA
RC140MHXGA
RC160MHXEA
RC160MHXGA
Power Source - 1P, 220~240VAC 50Hz
3P, 380-415VAC 50Hz
1P, 220~240VAC 50Hz
3P, 380-415VAC 50Hz
1P, 220~240VAC 50Hz
3P, 380-415VAC 50Hz
Nominal
Capacity
7°C kW 12.0 14.0 16.0
2°C kW 10.0 13.0 15.0
-15°C kW 12.5 12.5 12.5
COP (A7-W35) - 4.70 4.50 4.30
Compressor - Rotary Inverter Rotary Inverter Rotary Inverter
Condenser - Brazing type
72 plates
Brazing type
72 plates
Brazing type
72 plates
Evaporator - Φ7, FP 1.7, L950 Φ7, FP 1.7, L950 Φ7, FP 1.7, L950
Fan & Motor -
Propeller, Φ520,
3-blade
BLDC Inverter
Propeller, Φ520,
3-blade
BLDC Inverter
Propeller, Φ520,
3-blade
BLDC Inverter
Flow Switch LPM 16 ± 1.5
Magnetic (decreasing)
16 ± 1.5
Magnetic (decreasing)
16 ± 1.5
Magnetic (decreasing)
Base Heater W 150 150 150
Refrigerant g 2,200 (R410A) 2,200 (R410A) 2,200 (R410A)
Noise
(Heat/Cool, Pressure) dB 64/62 64 / 62 64 / 62
Water Connection
(In/Out) Inch 1.0 / 1.0 1.0 / 1.0 1.0 / 1.0
Leaving Water
Temperature °C Cooling : 5 ~ 25 Heating : 25 ~ 55
Cooling : 5 ~ 25
Heating : 25 ~ 55
Cooling : 5 ~ 25
Heating : 25 ~ 55
Operating range
(Heat/Cool) °C -20~35 / 10~46 -20~35 / 10~46 -20~35 / 10~46
Weight (net) Kg 112 112 112
Size (WxHxD, net) mm 940 x 1,420 x 330 940 x 1,420 x 330 940 x 1,420 x 330

6
Product Specifications
Type Unit RC090MHXEA
Power Source - 1P, 220~240VAC 50Hz
Nominal
Capacity
7°C kW 9
2°C kW 9
-15°C kW 7
COP (A7-W35) - 4.1
Compressor - Rotary Inverter
Condenser - Brazing type
48 plates
Evaporator - Φ7, FP 1.6, L850
Fan & Motor - Propeller, Φ520, 3-blade
BLDC Inverter
Flow Switch LPM 16 ± 1.5
Magnetic (decreasing)
Base Heater W 150
Refrigerant g 1,850 (R410A)
Noise
(Heat/Cool, Pressure) dB 63/ 60
Water Connection
(In/Out) Inch 1.0 / 1.0
Leaving Water Temperature °C Cooling : 5 ~ 25
Heating : 25 ~ 55
Operating range
(Heat/Cool) °C -20~35 / 10~46
Weight (net) Kg 83
Size (WxHxD, net) mm 940 x 998 x 330

ENGLISH
7
T
T
Solar Collector
1) Solar Signal Input
T
T
E
E
E
Return Header
Under-Floor Heating Coils
T
Supply Header
TB
4) Zone Controller #1 (Radiators)
3-way Diverting valve
Supply Header
Radiators or Convectors
Return Header
Mixing Tank
Indoor
Secondary
Secondary
Pump #1
E
E
3) Back up Boiler
Operation Output
[Application #2]
Thermostatic
& Balancing Valves
[Application #3]
Differential Pressure
bypass valve
[Application #1]
Zone Thermostat
& 2-way Valve
45℃
40℃
50~55℃
Mechanical RoomOutdoor 
2) DHW Sensor Input
& Booster Heater Output
Solar Pump
Control Kit
Outdoor unit
Primary
Pump
E
E
Air-vent
Drain
Y
R
Y
R
R
Pressure
Relief valve
3.0 bar
Expansion
Tank
Shut-Off &
Drain valve
Strainer
DHW tank
Air-vent
Air-vent
Air-ventAir-vent
5) Zone Controller #2 (UFHs)
6) 2way operation
7) 3way operation
8) Circulator for heat pump
Operation
Wired Controller
Pump #2
E
Booster Heater
Application Examples
E-7
• The application examples given below are for illustration purposes only.
• When the SAMSUNG Air-to-Water Heat Pump system is used in series with another heat source (e.g. gas boiler),
ensure that the return water temperature not exceed 55°C.
• The unit is only to be used in a closed water system. Application in an open water circuit can lead to excessive
corrosion of the water piping.
• SAMSUNG can not be put responsible for incorrect or unsafe situations in the water system. Make sure that the
boiler, radiators, convectors, solar collectors, UFHs, FCUs, additional pumps, pipings, and controls in the water
system are in accordance with relevant local laws and regulations under the installer's responsibility.
• By-pass valve shall be installed for space heating loops. When one of loops or all loops are closed , water flow rate
could be low condition.To keep flow rate approximately and prevent flow stop, the by-pass valve shall be installed
between supply collector and return collector.
• SAMSUNG shall not be held liable for any damage resulting from not observing this rule.
Application #1
Mono Outdoor + Control Kit

8
Application Examples
Application #2
Mono Outdoor + Cylinder Unit
Indoor 
Outdoor 
Return Header
Under-Floor Heating Coils
T
Supply Header
TB
Supply Header
Radiators or Convectors
Return Header
Cylinder Unit
Outdoor unit
Room Thermostat
(Wireless)
Control Kit
(provided by SAMSUNG)
Wired Controller
RF Receiver
Hot water Supply
From City Water
Expansion Vessel
PP
FF
T

ENGLISH
9
Main Components
Heat Pump for R410A.
1-Fan Chassis: RC090MHX
2-Fan Chassis: RC120MHX/RC140MHX/RC160MHX
620
940
330973
998
528
537
675
360
384
Dimensions(Overall)
620
330
360
384
940
1395
1420

10
Main Components
Dimensions (Water pipe)
513.4
151.5
83.5
244.4
(Unit : mm)(Unit : mm)
RC090MHX
RC120MHX/RC140MHX/RC160MHX

ENGLISH
11
NO. Name Note.
1 PHE 48P
2 Base Heater SUS316L, 150W
3 Water fitting BSPP 1" Male
③
①
②
Components(RC090)

12
Main Components
NO. Name Note.
1 PHE 72P
2 Base Heater SUS316L, 150W
3 Water Hose In Rubber Hose
4 Water Hose Out Rubber Hose
5 Water fitting BSPP 1" Male
①
④
③
⑤
②
Components(RC120  /140  /160  )

ENGLISH
13
Functional Diagram (RC090MHX)
Part Description
PHE Plate heat exchanger
T/S #1 For water outlet temp sensor
T/S #2 For water inlet temp sensor
T/S #3 For PHE In temp
T/S #4 For PHE Out temp
T/S #5 For discharge temp
T/S #6 For Cond temp
T/S #7 For Ambient temp sensor
S/V Service valve ¼ inch
Accum ACCUMULATOR
PHE
T/S #3
T/S #4
S/V S/V
4WAY
v/v
T/S #5
Comp
Filter Filter
Exp. v/v
Accum T/S #6
T/S #7
T/S #1
T/S #2

14
Functional Diagram (RC120MHX/RC140MHX/RC160MHX)
Part Description
PHE Plate heat exchanger
T/S #1 For water outlet temp sensor
T/S #2 For water inlet temp sensor
T/S #3 For PHE In temp
T/S #4 For PHE Out temp
T/S #5 For discharge temp
T/S #6 For Cond temp
T/S #7 For Ambient temp sensor
S/V Service valve ¼ inch
Accum ACCUMULATOR
PHE
T/S #3
T/S #4
S/V S/V
4WAY
v/v
T/S #5
Comp
Filter
HP s/w
Filter
Exp. v/v
Accum T/S #6
T/S #7
T/S #1
T/S #2

ENGLISH
15
Installing the Unit
Moving the outdoor unit with a fork lift
Moving the Outdoor Unit
Fasten the outdoor unit by two 8m or longer wire ropes as shown at the figure.To
prevent from damage or scratches, insert a piece of cloth between the outdoor
unit and rope, then move the unit.
Insert the fork into the wooden pallet at the bottom of the outdoor unit carefrully.
Be careful that the fork does not damage the outdoor unit.
• Select the moving route in advance.
• Be sure that moving route is safe from 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 carefule not to be injured while moving and installing.
Plate protection
cloth
Wire rope
The appearance of the unit may be differ
ent from the picture depending on
the model.
Moving the Outdoor Unit by Wire Rope
Deciding onWhere to Install the Outdoor Unit
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 to Water Heat Pump 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 other hydrauric system.
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 directly stream 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 an adequate place without direct sea breeze, make sure to apply anti-corrosion coating on the heat
exchanger.
Wooden pellet
Fork lift

16
Installing the Unit
- 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 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.
Do not install the Air to Water Heat Pump 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 toWater Heat pump 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.
• This device must be installed according to the national electrical rules.
• With an outdoor unit having net weight upper than 60kg, we suggest do not install it
suspended on wall, but considering floor standing one.
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 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.
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.
When you install the outdoor unit at wayside, you should install it above 2m height or make sure that the heat from the
outdoor unit shouldn't be in direct contact with passersby. (The ground for application :The revision of regulation for facility
in building by the law of the Ministry of Construction andTransportation.

17
ENGLISH
Space Requirements for Outdoor Unit
When installing 1 outdoor unit
300 or more
When the air outlet is opposite the wall
1500 or more
When the air outlet is towards the wall
300 or more
300 or more 600 or more
When 3 sides of the outdoor unit are blocked
by the wall
1500 or more
2000 or more
The upper part of the outdoor unit and the air
outlet is towards the wall
1500 or more
600 or more
300 or more
The upper part of the outdoor unit and the
air outlet is opposite the wall
300 or more
When front and rear side of the outdoor unit is
towards the wall

AA
18
Installing the Unit
1500 or more
When the air outlet is towards the wall
300 or more
300 or more
1500 or more 600 or more 3000 or more 300 or more3000 or more
600 or more 600 or more
300 or more1500 or more
600 or more 600 or more
600 or more
When 3 sides of the outdoor unit are blocked by the wall
When front and rear side of the outdoor unit is towards the wall
When front and rear side of the outdoor unit is towards the wall
When installing more than 1 outdoor unit
• The units must be installed according to distances declared, in order to permit accessibility from each side,
either to guarantee correct operation of maintenance or repairing products.
The unit’s parts must be reachable and removable completely under safety condition (for people or things).
(Unit : mm)
500 or more500 or more
300 or more
300 or more
The upper part of the outdoor unit and the
air outlet is opposite the wall

19
ENGLISH
(Unit : mm)
620
940
330 328
384
Anchor bolt hole
The outdoor unit must be installed on a rigid and stable base to avoid any increase in the noise level and vibration, particularly
if the outdoor unit is to be installed in a location exposed to strong winds or at a height, the unit must be fixed to an appropriate
support(wall or ground).
Fix the outdoor unit with anchor bolts.
• The anchor bolt must be 20mm or higher from the base
surface.
• When tightening the anchor bolt
Tightentherubberwashertopreventtheoutdoorunitbolt
connectionpartfromcorroding
• Make a drain outlet around the base for outdoor unit
drainage.
• If the outdoor unit is installed on the roof, you have to
check the ceiling strength and waterproof the unit.
Outdoor unit installation
Outdoor unit support
When installing air guide duct
• Check and make sure that screws do not damage the copper pipe.
• Secure air guide duct on guard fan.
20mm
Anchor bolt
Outdoor
Unit
Base Surface
Outdoor Unit
Support
Soft rubber designed to
cut off vibration from rack
to wall. (not supplied with
product)
Designed to cut off
residual vibration
from outdoor unit to
rack. (not supplied
with product)
OUTDOOR UNIT INSTALLED ONTHEWALL BY RACK
- Ensure the wall will be able to suspend the weight of rack and outdoor unit ;
- Install the rack close to the column as much as possible ;
- Install proper grommet in order to reduce noise and residual vibration
transferred by outdoor unit towards wall.

20
Installing the Unit
While Air-Water Heat Pump is running in heating mode, Ice can begin accumulate on the surface of condenser.
To prevent Ice growing, system go into De-frost mode and then Ice on the surface changes to water.
Dropped water from condenser shall be eliminated through running drain holes to prevent Ice growing at low temperature.
• If drain work is not enough, it can lead to system performance
degration and system damages.
Drain Cap x 3ea
1. Prepare a water drainage channel around the foundation, to drain waste water
from around the unit.
2. If the water drainage of the unit is not easy, please build up the unit on a foundation
of concrete blocks, etc. (the height of the foundation should be maximum 150mm).
3. If you install the unit on a frame, please install a waterproof plate within 150mm of
the underside of the unit in order to prevent the invasion of water from the lower
direction.
4. When installing the unit in a place frequently exposed to snow, pay special attention
to elevate the foundation as high as possible.
5. If you install the unit on a building frame, please install a waterproof plate
(field supply) (within 150mm of the underside of the unit) in order to avoid the drain
water dripping. (See figure)
In case there is not enough space for drainage out of the unit, additional drain works are required.
Follow the description as below
 Make space more than 100mm between the bottom of the outdoor unit
and the ground for installation of the drain hose.
 Insert the drain plug into the hole on the bottom of the outdoor unit.
 Connect the drain hose to the drain plug.
 Make sure dusts or small branches should not go into the drain hose.
Drain Plug x 1ea
Drain Hole Φ20 x 4ea
Air discharge side
Drain work
≥100mm
30 mm