Sinclair SMH-100IRA? SMH-140IRA Original Instructions Manual

SMH-100IRA

SMH-140IRA

AIR TO WATER HEAT PUMPS

MONOBLOCK INVERTER

“Originalinstructions”



Contents

1 Instruction to Users..................................................................................1

2 Safety Considerations .............................................................................2

3 Diagram of the Operating Principle .........................................................5

4 Operating Principle of the Unit.................................................................6

5 Nomenclature ..........................................................................................8

6 Installation Example .............................................................................9

7 Main Components ................................................................................ 11

8 Installation Guideline of the Unit ............................................................ 13

9 Remote Air Temperature Sensor ...........................................................17

10 Thermostat ..........................................................................................18

11 2-Way Valve ......................................................................................... 18

12 3-Way Valve.........................................................................................19

13 Wired Controller .................................................................................20

14 Other Auxiliary Heat Sources .............................................................20

15 Gate-controller ................................................................................... 20

16 Charging and Discharging of Refrigerant ............................................21

17 Installation of Insulated Water Tank ....................................................22

18 Wring Diagram .....................................................................................27

19 Commissioning .................................................................................... 36

20 Daily Operation and Maintenance ......................................................38

1 Instruction to Users

Air-to-water Heat Pump Monoblock

1

Thank you for choosing our air to water heat pumps. Please read this manual carefully before

installation and use the unit correctly according to the following procedure.

◆

After receipt of the unit, check it for appearance, unit model compared with your desire and
attachments.

◆

For proper installation and future maintenance please read this Instruction and keep it carefully.

◆

Design and installation work of the unit must be performed by authorized personnel according to
applicable laws and regulations and this Instruction.

◆

After installation work, the unit cannot be energized unless there is not any problem in check.

◆

Ensure periodical clean and maintenance of the unit after normal operation of the unit for longer
life and reliable operation.

◆

For improvement of products, there should be not additional notice of amendment of the
contents.

Notice!

◆

If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or

similarly qualied persons in order to avoid a hazard.

◆

The appliance shall be installed in accordance with national wiring regulations.

Correct Disposed of this product

This marking indicates that this product should not be disposed with
other household wastes throughout the EU.To prevent possible harm to
the environment or human health from uncontrolled waste disposal,recycle
it responsibly to promote the sustainable reuse of material resources. To
retuern your used device,please use the return and collection systems or
contact the retailer where the product was purchased. They can take this
product for environmental safe recycling.

R410A(R32/125:50/50):2087.5

This appliance can be used by children aged from 8 years and above
and persons with reduced physical, sensory or mental capabilities or lack of
experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards
involved.Children shall not play with the appliance. Cleaning and user
maintenance shall not be made by children without supervision.

2 Safety Considerations

Air-to-water Heat Pump Monoblock

2

Please read the following contents carefully before operating.

WARNING

■ Once abnormality like burning

smell occurs, please cut off
the power supply immediately
and then contact with service
center.

If the abnormality still exists, the
unit may be damaged and

electric shock or re may result.

■ Special circuit must be

adopted for power supply to

prevent re.

■ Don't operate the unit with wet

hand.

Otherwise, it may cause electric
shock.

■ Be sure to pull out the power

plug and drain the unit and
water tank when unit is not in
use for a long time.

■ Before installation,please

see if the voltage of local
place accords with that on
nameplate of unit and capacity
of power supply, power cord
or socket is suitable for input
power of this unit.

■ Never damage the electric

wire or use the one which is

not specied.

Do not use octopus multipurpose
plug or mobile terminal board for
wire connection.

■ Before cleaning please cut off

the power supply.

Otherwise, it may cause electric
shock or damage.

Otherwise, the accumulated dust
may cause overheating,fire or
freeze of water tank or coaxial
heater exchanger in winter.

■ The power supply must adopt

special circuit with leakage
switch and enough capacity.

Otherwise, it may cause

overheating or re.

■ User can not change power

cord socket without prior
consent. Wiring working must
be done by professionals.
Ensure good earthing and
don't change earthing mode
of unit.

■ Earthing: the unit must be

Air-to-water Heat Pump Monoblock

3

earthed reliably ! The earthing
wire should connect with
special device of buildings.

If not, please ask the qualified
personnel to install.
Furthermore, don't connect
earth wire to gas pipe, water
pipe, drainage pipe or any
other improper places which
professional does not recognize.

■ Don't step on the top of the

unit or place anything on it.

■ Never insert any foreign

matter into uint to avoid
damage . And never insert
your hands into the air outlet
of the unit.

■ Never block the air inlet and

outlet of unit.

■ Don't attempt to repair the unit

by yourself.

Improper repair may cause electric
shock or fire, so you should
contact the service center to
repair.

■ Keep pressurized spray, gas

holder and so on away from
the unit above 1m .

There is the danger of fall of

It may reduce efficiency or cause

stop of the unit and even re.

things or people.

It may cause re or explosion.

■ Please note whether the

installation stand is firm
enough or not.

■ Unit should be installed at the

place with good ventilation to
save energy.

■ When there is not water in

water tank, never power the
unit on to run.

If damaged, it may cause fall of
the unit and injury of people.

Notice!

(1) Before installation, please check if the adopted power is accordance with that listed on
nameplate, and check the safety of power.
(2) Before using, please check and conrm if wires and water pipes are connected correctly to avid

water leakage, electric shock or re etc.

(3) Don’t operate the unit with wet hand, and don’t allow children to operate the unit.

(4) The On/off in the instruction is for the operation to on and off button of PCB for users; cut off

Air-to-water Heat Pump Monoblock

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power means to stop supplying power to the unit.
(5) Don’t directly expose the unit under the corrosive ambient with water or dampness.
(6) Don’t operate the unit without water in water tank .The air outlet/inlet of unit can not be blocked
by other objects.
(7) The water in unit and pipeline should be discharged if the unit is not in use, to prevent the water
tank, pipe line and water pump from frost-cracking.
(8) Never press the button with sharp objects to protect manual controller. Never use other wires
instead of special communication line of the unit to protect control elements. Never clean the
manual controller with benzene, thinner or chemical cloth to avoid fading of surface and failure
of elements. Clean the unit with the cloth soaked in neutral eradicator .Slightly clean the display
screen and connecting parts to avoid fading.
(9) The power cord must be separated with the communication line.
(10) maximum and minimum water operating temperatures.

Item

Cooling 7°C 25°C

Heating 25°C 60°C

Water heating 40°C 80°C

Minimum water operating

temperatures

Maximum water operating

temperatures

maximum and minimum water operating pressures.

Item

Cooling

Water heating

Minimum water operating

pressures

0.05MPa 0.25MPaHeating

Maximum water operating

pressures

maximum and minimum entering water pressures.

Item Minimum entering water pressures

Cooling

Maximum entering water

pressures

0.05MPa 0.25MPa Heating

Water heating

the range of external static pressures at which the appliance was tested (add-on heat pumps, and

appliances with supplementary heaters,only);If the supply cord is damaged, it must be replaced by

the manufacturer, its service agent or similarly qualied persons in order to avoid a hazard.

(11) The appliance is intended to be permanently connected to the water mains and not connected
by a hose-set.

If there is any question, please contact with local dealer, authorized service center, agencies

or our company directly.

3 Diagram of the Operating Principle

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No. Name No. Name No. Name No. Name

1 Inverter compressor 13 Solenoid valve 25 Water lter 37

Discharge temperature

2

3 High-pressure switch 15 Low pressure sensor 27 Safety valve 39 2-way Valve 1

4 High pressure sensor 16

5 4-way Valve 17

6 Finned heat exchanger 18 Auxiliary electric heater 30

7

8

9 Filter 21 Main water pump 33

10 EXV 1 22 Main ow switch 34

11 Flasher 23 Outlet pipe connector 35 Solar panel

12 Pressure sensor 24 Inlet pipe connector 36

sensor

Environment

temperature sensor

Defrosting temperature

sensor

14 EXV 2 26

Suction temperature

sensor

Outlet water

temperature sensor

(plate heat exchanger)

19 Expansion tank 31 Water tank 43 By-pass valve

Main outlet temperature

20

sensor

28 Exhaust valve 40 Floor radiator

29 3-way valve 2 41 Water collector

32

Inlet temperature

sensor (plate heat

exchanger)

Water tank

temperature sensor 1

Solar system outlet

temperature sensor

Solar system ow

switch

Solar system water

pump

Solar panel

temperature sensor

38 Water separator

42 FCU

44 Vapor liquid separator

45 Main plate heat exchanger

46

Solar system inlet

temperature sensor

Water tank temperature

sensor 2

4 Operating Principle of the Unit

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DC Inverter Air to Water Heat Pump is composed of the unit,FCU and water tank. Operation

functions:

(1) Cooling;
(2) Heating;
(3) Water heating;
(4) Cooling +water heating;
(5) Heating+ water heating;
(6) Emergency mode;
(7) Quick water heating;
(8) Holiday mode;
(9) Forced Operation Mode;
(10) Silent mode;
(11) Disinfection mode;
(12) Weather-dependent Operation;
(13) Floor debugging
(14) Air removal of the water system
(15) Solar water heater
(16) Backup heat source

Cooling: in cooling mode, the refrigerant is condensed in the aluminum fin-copper tube and
evaporated in the plate heat exchanger. Via the heat exchange with water in the plate heat
exchanger, the temperature of water decrease and it releases heat while the refrigerant absorbs

heat and evaporates. With the help of wired controller, the outow temperature can meet the user’s

requirement. Through the control of valve, the low-temperature water in the system is connected
with indoor fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor
temperature decreases to the required range.

Heating: in heating mode, the refrigerant evaporates in the aluminum fin-copper tube and
is condensed in the plate heat exchanger. Via the heat exchange with water in the plate heat
exchanger, the water absorbs heat and its temperature increase while the refrigerant releases heat
and is condensed. With the help of wired controller, the outflow temperature can meet the user’s
requirement. Through the control of valve, the high-temperature water in the system is connected
with indoor fan coil and underground pipe, and exchanges heat with the indoor air so that the indoor
temperature increases to the required range.

Water heating: in water heating mode: the refrigerant evaporates in the aluminum n-copper tube

and is condensed in the plate heat exchanger. Via the heat exchange with water in the plate heat
exchanger, the water absorbs heat and its temperature increase while the refrigerant releases heat
and is condensed. With the help of wired controller, the outflow temperature can meet the user’s
requirement. Through the control of valve, the high-temperature water in the system is connected
with the coil pipe of bearing water tank, and exchanges heat with the water in the water tank so that
the temperature of water tank increases to the required range.

Cooling + water heating: when cooling mode exists together with the water heating mode, the
user can set the priority of these two modes based on the needs. The default priority is heat pump.
That is under the default setting, if cooling mode exists together with the water heating mode, the
heat pump gives priority to cooling. In that case, water heating can only realized with e-heater of
the water tank. Inversely, the heat pump gives priority to water heating and switches to cooling after

nishing water heating.

Heating+ water heating: when heating mode exists together with the water heating mode, the

user can set the priority of these two modes based on the needs. The default priority is heat pump.

Air-to-water Heat Pump Monoblock

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That is under the default setting, if heating mode exists together with the water heating mode, the
heat pump gives priority to heating. In that case, water heating can only realized with e-heater of
the water tank. Inversely, the heat pump gives priority to water heating and switches to heating after

nishing water heating.

Emergency mode: this mode is only available for heating and water heating. When the monobloc
unit stops due to malfunction, enter the corresponding emergency mode; as to heating mode, after
entering the emergency mode, heating can only be realized through e-heater .When the setting
outflow temperature or indoor temperature is reached, the e-heater will stop running; as to water
heating mode, the e-heater stops while the e-heater of water tank runs. When the setting temperature
or water tank is reached, the e-heater will stop running.

Quick water heating: in quick water heating mode, the unit runs according to the water heating
control of heat pump and the e-heater of water tank runs at the same time.

Forced Operation Mode: this mode is only used for refrigerant recovery and debugging for the
unit.

Holiday mode:this mode is only available for heating mode. This mode is set to keep indoor
temperature or leaving water temperature in a certain range, so as to prevent water system of the
unit from freezing or protect certain indoor articles from freezing damage. When the unit stops due to
malfunction, the two e-heaters of the unit will run.

Disinfection mode: in this mode, the water heating system can be disinfected. When starting up
the disinfection function and setting corresponding time to meet the requirement of disinfection mode,
the function will start. After the setting temperature is reached, this mode will terminate.

Weather-dependent Operation: this mode is only available for space heating or space cooling.
In Weather- dependent mode, the setting value (remote room air temperature or leaving water
temperature) is detected and controlled automatically when the outdoor air temperature is changed.

Quiet mode: Silent mode is available in cooling, heating and water heating mode. In silent mode,
the unit will reduce the running noise via automatic control.

Floor commissioning: this function is intended to preheat the oor periodically for the initial use.

Air removal of the water system: this function is intended to replenish water and remove air in

the water system to make the equipment run at the stabilized water pressure.

Solar water heater: when the condition for starting the solar water heater is satised, the solar

heater will start to heat the circulation water. Then the heated water will go to the water tank and
exchange heat with water in it. At any condition, the solar water heater will be given priority for startup
so as for energy conservation.

Backup heat source: when the outdoor temperature is lower than the set point for starting the
backup heat source and the unit is under the error condition and the compressor has stopped for
three minutes, then the backup heat source will start to supply heat or hot water to the room.

5 Nomenclature

Air-to-water Heat Pump Monoblock

8

Model Line-Up

Model Name

SMH-100IRA

SMH-140IRA

Note:

1

Capacities and power inputs are based on the following conditions:

Heating

1

9.5 9.8

14.2

Indoor Water Temperature 30°C/35°C,Outdoor Air Temperature 7°C DB/6°C WB;

2

Capacities and power inputs are based on the following conditions:

Indoor Water Temperature 23°C/18°C,Outdoor Air Temperature 35°C DB/24°C WB.

Operation Range

Mode

Heating

Cooling

Water Heating

Heat Source Side Temperature (°C) User Side Temperature (°C)

,kW

Capacity

14.5

2

,kW

Cooling

-20~35

10~48 7~25

-20~45 40~80

Power supply

220-240V,~,50Hz

380-415V,3N~,50Hz

25~60

6 Installation Example

Air-to-water Heat Pump Monoblock

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CASE 1: Connecting Heat Emitters for Heating and Cooling(Under floor loop,Fan Coil
Unit,and Radiator)

Note:

The two-way valve is very important to prevent dew condensation on the floor and Radiator

①

while cooling mode;

Type of thermostat and specication should be complied with installation of this manual;

②

The Bypass valve must be installed to secure enough water ow rate, and should be installed at

③

the collector;

CASE 2: Connecting Sanitary Water Tank

Note:

Air-to-water Heat Pump Monoblock

10

In this case, three-way valve should be installed and should be complied with installation of this

①

manual;

Sanitary water tank should be equipped with internal electric heater to secure enough heat

②

energy in the very cold days;

CASE 3 : Connecting Solar thermal system

Two-way valve is very important to prevent dew condensation on the floor and Radiator while
cooling mode.

CASE 4 : Connecting Swimming pool system

Under Floor Coil

B

Radiator

FCU 1F CU 2

Hot water

City water

3-way valve 1

3-way valve 2

T

M

Sanitary water tank

Booster heater

Notes:

Air-to-water Heat Pump Monoblock

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1)Two-way valve is very important to prevent dew condensation on the oor and Radiator while

cooling mode.

2) 3-Way valve 1 is controlled by user,while the pool pump is actived, 3-Way valve 1 switches to

pool loop;while the pool pump is shuted down,3-Way valve 1 switches to under oor/FCU loop.

3) 3-Way valve 2 is automatic controlled by monobloc unit,while running water heating mode,3-

Way valve 2 switches to water tank loop;while running cooling/heating mode,3-Way valve 2 switches

to under oor/FCU loop.

7 Main Components

(1) SMH-100IRA

DC Fan Motor

Control Box

Electric Heater

Water Pump

Flow Switch

Expansion Tank

Compressor

Plate Heat Exchanger

(2) SMH-140IRA

Air-to-water Heat Pump Monoblock

12

DC Fan Motor

Control Box

Safety Valve

Air Vent

Electric Heater

Flow Switch

Expansion Tank

Water Pump

Compressor

Plate Heat Exchanger

Flash Tank

8 Installation Guideline of the Unit

Air-to-water Heat Pump Monoblock

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8.1 Instruction to installation

(1) Installation of the unit must be in accordance with national and local safety codes.
(2) IInstallation quality will directly affect the normal use of the air conditioner unit. The user is
prohibited from installation. Please contact your dealer after buying this machine. Professional
installation workers will provide installation and test services according to installation manual.
(3) Do not connect to power until all installation work is completed.

8.2 Installation of the Monobloc Unit

8.2.1 Selection of the Installation Location of the Monobloc Unit

(1) The monobloc unit must be installed on a rm and solid support.
(2) Avoid placing the monobloc unit under window or between two constructions, hence to prevent
normal operating noise from entering the room.
(3) Air ow at inlet and outlet shall not be blocked.
(4) Install at a well-ventilated place, so that the machine can absorb and discharge sufcient air.
(5) Do not install at a place where ammable or explosive goods exist or a place subject to severe
dust, salty fog and polluted air.

8.2.2 Outline Dimensions of the Monobloc Unit

(1) SMH-100IRA

1390

890

361

412

388

(2) SMH-140IRA

Air-to-water Heat Pump Monoblock

14

1430

367

340

8.2.3 Space requirements for installation

500

＞

500

500

＞

2000

＞

＞

1390

＞

2000

1000

＞

500

＞

8.2.4 Precautions on installation of the Monobloc Unit

(1) When moving the monobloc unit, it is necessary to adopt 2 pieces of long enough rope to hand
the unit from 4 directions. Included angle between the rope when hanging and moving must be
40°below to prevent center of the unit from moving.
(2) The monobloc unit should be installed on concrete base that is 10cm height.
(3) Requirements on installation space dimension of unit’s bodies are shown in following drawing.
(4) The monobloc unit must be lifted by using designated lifting hole. Take care to protect the unit
during lift. To avoid rusting, do not knock the metal parts.

8.3 Water Volume and Pump Capacity (with pump)

Air-to-water Heat Pump Monoblock

15

Note: during operation, the water pump will adjust its output based on the actual load.

1

/min

n/

max

n

min

n

Off

1U/V

0132

8.4 Water Volume and Expansion Vessel Pressure

Air-to-water Heat Pump Monoblock

16

2.5

2.0

1.5

1.0

0.5

Pre-pressure in expension vessel(Bar)

0.0
0 50 100 150 200 250 300 350 400

Maximum total water volume(liter)

Note:

The expansion vessel is 10 liter and 1bar pre-pressurized;

①

Total water volume of 280 liter is default; if total water is changed because of installation

②

condition, the pre-pressure should be adjusted to secure proper operation;

Minimum total water volume is 20 liter;

③

To adjust pre-pressure, use nitrogen gas by certicated installer.

④

8.5 Selection of Expansion Vessels

Formula:

V--- Volume of expansion vessel
C--- Total water volume

--- Pre-set pressure of expansion vessel

P

1

-- The highest pressure during running of the system (that is the action pressure of safety valve.)

P

2

e---The expansion factor of water (the difference between the expansion factor of the original water

temperature and that of highest water temperature.)

Water expansion factor in different temperature

Temperature

0 0.00013

4 0
10 0.00027
20 0.00177
30 0.00435
40 0.00782
45 0.0099
50 0.0121
55 0.0145
60 0.0171
65 0.0198
70 0.0227
75 0.0258
80 0.029

(℃)

Expansion factor e

85 0.0324

t

Air-to-water Heat Pump Monoblock

17

90 0.0359
95 0.0396

100 0.0434

9 Remote Air Temperature Sensor

Front side Back side

Remote Air Temperature Sensor

CN15

NO

YES

1.5 Meters

CN1

NO

NONO

Remote Air Environmen
Temp sensor

15K

Doors

Electric box

Note:

Distance between the monobloc unit and the remote air temperature senor should be less than

①

15 meter due to length of the connection cable of remote air temperature sensor;

Height from oor is approximately 1.5 meter;

②

Remote air temperature sensor can not be located where the area may be hidden when door is

③

open;

Remote air temperature sensor can not be located where external thermal inuence may be

④

2

applied;

Air-to-water Heat Pump Monoblock

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Remote air temperature sensor should be installed where space heating is mainly applied;

⑤

After the remote air temperature sensor is installed, it should be set to “With” through the wired

⑥

controller so as to set the remote air temperature to the control point.

10 Thermostat

Installation of the thermostat is very similar to that of the remote air temperature sensor.

XT3

21 22 23 24 25 26

2220V GND

220V AC

Thermostat

OFF

HEAT

COOL

27 28 29 30

224V GND

COOL

HEAT

Thermostat

24V AC

OFF

How to Wire Thermostat

(1) Uncover the front cover of the monobloc unit and open the control box.
(2) Identify the power specification of the thermostat, if it is 230V , find terminal block XT3

asNO.21~25; Otherwise, if it is 24V, nd terminal block XT3 as NO.26~30;
(3) If it is the heating/cooling thermostat, please connect wire as per the gure above;

CAUTION!

Never use 230V AC and 24V AC thermostat at the same time, otherwise, it will cause short

①

circuit and power cut-off by the circuit breaker;

Setting temperature by the thermostat(heating or cooling) should be within the temperature

②

range of the product ;

For other constrains, please refer to previous pages about the remote air temperature sensor;

③

Do not connect external electric loads. Wire 220V AC(24V AC) and 220V GND(24V GND)

④

should be used only for the electric thermostat.

Never connect external electric loads such as valves, fan coil units, etc. If connected, the

⑤

mainboard of the unit can be seriously damaged.

Installation of the thermostat is very similar to that of the remote air temperature sensor.

⑥

11 2-Way Valve

There are two 2-way valve,the 2-way valve 1 is available and the 2-way vavle is reserved.The

2-way valve 1 is required to control water ow for cooling operation. The role of 2-way valve 1 is to
cut off water ow into the underoor loop when the fan coil unit is equipped for cooling operation.

General Information

Type Power Operating Mode Supported

NO 2-wire 230V 50Hz ~AC

NC 2-wire 230V 50Hz ~AC

(1) Normal Open type. When electric power is NOT supplied, the valve is open. (When electric
power is supplied, the valve is closed.)
(2) Normal Closed type. When electric power is NOT supplied, the valve is closed. (When electric
power is supplied, the valve is open.)

Closing water ow Yes

Opening water ow Yes

Closing water ow Yes

Opening water ow Yes

How to Wire 2-Way Valve:

Air-to-water Heat Pump Monoblock

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Follow steps below to wire the 2-way valve.
Step 1. Uncover the front cover of the unit and open the control box.
Step 2. Find the terminal block and connect wires as below.

XT2

4 5 6 10 11 12

L2(ON)

L1(OFF)

N

2-Way Valve 2 2-Way Valve 1

L2(ON)

L1(OFF)

N

WARING!

Normal Open type should be connected to wire (ON) and wire (N)for valve closing in cooling

①

mode.

Normal Closed type should be connected to wire (OFF) and wire (N)for valve closing in cooling

②

mode.

(ON) : Line signal (for Normal Open type) from PCB to 2-way valve
(OFF) : Line signal (for Normal Closed type) from PCB to 2-way valve
(N) : Neutral signal from PCB to 2-way valve

The 2-way value 2 is reserved without any control program. At the eld installation, it should be

wired at the terminal board of the 2-way valve 1.

12 3-Way Valve

There are two 3-way valve, the 3-way valve 1 is reserved and the 3-way valve 2 is available.The

3-way valve 2 is required for the sanitary water tank. Its role is ow switching between the under oor

heating loop and the water tank heating loop.

General Information

Type Power Operating Mode Supported

SPDT
3-wire

230V 50Hz ~AC

Selecting “Flow A” between “Flow A” and “Flow B” Ye s
Selecting “Flow B” between “Flow B” and “Flow A” Yes

(1) SPDT = Single Pole Double Throw. Three wires consist of Live1 (for selecting (for selecting Flow
B), and Neutral (for common).
(2) Flow A means 'water ow from the monobloc unit to under oor water circuit'.
(3) Flow B means 'water ow from the monobloc unit to sanitary water tank'.

Follow steps below to wire the 3-way valve:
Follow below procedures Step 1 ~ Step 2.
Step 1. Uncover front cover of the unit and open the control box.
Step 2. Find terminal block and connect wire as below.

XT2

1 2 3 7 8 9

L2(ON)

L1(OFF)

N

L2(ON)

L1(OFF)

N

3-Way Valve 1 3-Way Valve 2

WARING!

Air-to-water Heat Pump Monoblock

20

The 3-way valve should select water tank loop when electric power is supplied to wire (OFF)

①

and wire (N).

The 3-way valve should select under oor loop when electric power is supplied to wire (ON) and

②

wire (N).

(ON): Line signal (Water tank heating) from the main board to the 3-way valve

(OFF): Line signal (Under oor heating) from the main board to the 3-way valve

(N): Neutral signal from the main board to the 3-way valve

13 Wired Controller

Wired controller wiring guidance:

14 Other Auxiliary Heat Sources

Other auxiliary heat sources are allowed for the equipment and controlled in such a way that the
mainboard will output 230V when outdoor temperature is lower than the set point for startup of the
auxiliary heat source.

XT2

13 14

N

Other Thermal

15 Gate-controller

If there is gate control function,installation guide follow as:

(1) SMH-100IRA

XT3

1 2

Gate-Controller

(2) SMH-140IRA

XT4

5 6

Gate-Controller

16 Charging and Discharging of Refrigerant

Air-to-water Heat Pump Monoblock

21

The unit has been charged with refrigerant before delivery. Overcharging or undercharging will
cause the compressor to run improperly or be damaged. When refrigerant is required to be charged
or discharged for installation, maintenance and other reasons, please follow steps below and nominal
charged volume on the nameplate.

(1) Discharging: remove metal sheets of the outer casing, connect a hose to the charging valve and
then discharge refrigerant.

Charging

valve 1

Charging

valve 2

Notes:

Discharge is allowed unless the unit has been stopped. (Cut off the power and repower it 1

①

minutes later)

Protective measures should be taken during discharging to avoid frost bites.

②

When discharging is nished, if vacuuming cannot be done immediately, remove the hose to

③

avoid air or foreign matters entering the unit.

(2) Vacuuming: When discharging is nished, use hoses to connect the charging valve, manometer
and vacuum pump to vacuum the unit.

Pressure Meter

Note: when vacuuming is nished, pressure inside the unit should be kept lower than 80Pa for at

least 30 minutes to make sure there is no leak. Either charging valve 1 or charging valve 2 can be
used for vacuuming.

(3) Charging: when vacuuming is nished and it is certain that there is no leak, charging can be
done.

◆

Be sure to charge the specied amount of refrigerant in liquid state.

Since this refrigerant is a mixed refrigerant, adding it in gas form may cause the refrigerant
composition to change, preventing normal operation.

◆

Before charging, check whether the refrigerant cylinder is equipped with a siphon tube or not.

Connection Pipe

Vacuum pump

Air-to-water Heat Pump Monoblock

22

With siphon tube No siphon tube

17 Installation of Insulated Water Tank

17.1 Installation measure

The water tank should keep a horizontal distance of 5 meters and a vertical distance of 3 meters
with the main unit. It allowed to be installed in the room.

The standing type water tank must be installed erectly on the ground/floor and never be

suspended. Installation place must be rm enough and the water tank should be xed on the wall with
bolts to avoid vibration, as shown in the following gure. During installation, weight of the water tank

should be taken into consideration.

Water Tank

Fix

With

Bolts

Installed on the ground

and never suspended

The minimum clearance between the water tank and any combustible object must be 500mm.

The water pipe, hot water joint and oor drain should be equipped for the water replenishment, hot

water supply and drainage of the water tank respectively.

Connection of the inlet/outlet waterway: connect the safety check valve attached with the unit
(with the arrow on it pointing at the water tank) to the water inlet of the water tank with the PPR pipe
according to the following figure and seal with seal tape. The other end of the safety check valve
should connect with the water tap. The hot water pipe should be connected to the water outlet of the
water tank also with the PPR pipe.

Safety check valve

Tap water

Note:

For safe use of water, water outlet/inlet of water tank must connect with a certain length of PPR

2

pipe ,L ≥70×R

(cm, R is inside radius of the pipe). Moreover, heat preservation should be conducted

and metal pipe can not be used. For the rst use, water tank must be full of water before the power is

on.

17.2 Connection of waterway system

Air-to-water Heat Pump Monoblock

23

(1) If connection between the water tank and the monobloc unit should go through the wall, drill a

hole φ70 for pass of circulating water pipe.

(2) Preparation of pipelines: circulating water outlet/inlet pipe must be hot water pipe and PPR pipe
with nominal outer diameter of dn25 and S2.5 series (wall thickness of 4.2mm) are recommended.
Cooling water inlet pipe and hot water outlet pipe of water tank should also be hot water pipe
and PPR pipe with nominal outer diameter of dn20 and S2.5 series (wall thickness of 3.4mm)
are recommended. If other insulated pipes are adopted, refer to the above dimensions for outer
diameter and wall thickness.
(3) Installation of circulating water inlet/outlet pipes: connect the water inlet of the unit with
circulating outlet of water tank and water outlet of unit with circulating inlet of water tank.
(4) Installation of water inlet/outlet pipes of the water tank: safety check valve, lter and cut-off valve
must be installed for the water inlet pipe according to the installation sketch of the unit. At least a
cut-off valve is needed for the water outlet pipe.
(5) Installation of blow-off pipes at the bottom of water tank: connect a piece of PPR pipe with

drainage outlet to oor drain. A cut-off valve must be installed in the middle of the drainage pipe and

at the place where it is easy to be operated by the users.
(6) After connection of all waterway pipelines, perform the leakage test rstly. After that, bind up the
water pipes, water temp sensor and wires with wrapping tapes attached with the unit.
(7) Refer to Installation Sketch of the Unit for details.

CN29
CN12

Monobloc

Unit

AP1

XT3

CN11

1

Power cord of

booster heater

Hot Water Outlet

Tem.Sensor1

Cool Water Inlet

Safety Check

Valve

Cut- Off Valve

Other Thermal

Blow -O ff Outlet

Description Joint pipe thread

Circulating water inlet/outlet of main unit 1″Male BSP

Cooling water inlet of water tank 1/2″Female BSP

Circulating water inlet/outlet of water tank 3/4″Female BSP

Hot water outlet of water tank 1/2″Female BSP

System

Tap Water

Filter

Note:

Distance between monobloc unit and water tank should not exceed 5m levelly and 3m vertically.

①

If higher, please contact with us. Water tank on lower and main unit on higher side is recommended.

Prepare the materials according to the above joints dimension. If cut-off valve is installed

②

outside the room, PPR pipe is recommended to avoid freeze damage.

Waterway pipelines can’t be installed until water heater unit is xed. Do not let dust and other

Air-to-water Heat Pump Monoblock

24

③

sundries enter into pipeline system during installation of connection pipes.

After connection of all waterway pipelines, perform leakage test rstly. After that, perform heat

④

preservation of waterway system; meanwhile, pay more attention to valves and pipe joints. Ensure
enough thickness of insulated cotton. If necessary, install heating device for pipeline to prevent the
pipeline from freezing.

Hot water supplied from insulated water tank depends on pressure of water tap, so there must

⑤

be supply of tap water.

During using, the cut-off valve of cooling water inlet of water tank should be kept normally on.

⑥

17.4 Electric wiring work

17.4.1 Wiring principle

General principles

◆

Wires, equipment and connectors supplied for use on the site must be in compliance with
provisions of regulations and engineering requirements.

◆

Only certicated electricians are allowed to perform wire connection on the site.

◆

Before connection work is started, the power supply must be shut off.

◆

Installer shall be responsible for any damage due to incorrect connection of the external circuit
of the unit.

◆

Caution --- only copper wires are allowed to be used.

Connection of power cable to the electric cabinet of the unit

◆

Power cables should be laid out through cabling trough, conduit tube or cable channel.

◆

Power cables to be connected into the electric cabinet must be protected with rubber or plastic to
prevent scratch by edge of metal plate.

◆

Power cables close to the electric cabinet of the unit must be xed reliably to make the power

terminal in the cabinet free from an external force.

◆

Power cable must be grounded reliably.

17.4.2 Specication of Power Supply Wire and Leakage Switch

Power cable specications and Leakage switch types in the following list are recommended.

Minimum Sectional

Area of Earth Wire

2

) (mm2)

Model

SMH-100IRA

SMH-140IRA

Power Supply

V / Ph / Hz

220-240 / 1 / 50

380-400 / 3 / 50

Breakers

(A) (mm

63 16 5×25

40 10 5×10

Note:

The leakage switch is necessary for additional installation. If circuit breakers with leakage

①

protection are in use, action response time must be less than 0.1 second, leakage circuit must be
30mA.

The above selected power cable diameters are determined based on assumption of distance

②

from the distribution cabinet to the unit less than 75m. If cables are laid out in a distance of 75m to
150m, diameter of power cable must be increased to a further grade.

The power supply must be of rated voltage of the unit and special electrical line for air-

③

conditioning.

All electrical installation shall be carried out by professional technicians in accordance with the

④

Minimum Sectional

Area of Power

Supply Wire

local laws and regulations.

Air-to-water Heat Pump Monoblock

25

Ensure safe grounding and the grounding wire shall be connected with the special grounding

⑤

equipment of the building and must be installed by professional technicians.

The specifications of the breaker and power cable listed in the table above are determined

⑥

based on the maximum power (maximum amps) of the unit.

The specifications of the power cable listed in the table above are applied to the conduit-

⑦

guarded multi-wire copper cable (like, YJV XLPE insulated power cable) used at 40°C and resistible

to 90°C(see IEC 60364-5-52). If the working condition changes, they should be modied according to

the related national standard.

The specications of the breaker listed in the table above are applied to the breaker with the

⑧

working temperature at 40°C. If the working condition changes, they should be modied according to

the related national standard.

18 Wring Diagram

Air-to-water Heat Pump Monoblock

26

18.1 Control Board

(1) Main Board (AP2): SMH-100IRA; SMH-140IRA

PWR1

DC-MOTOR0

AC-N AC-L 4V VA-1 HEAT

ENTH

FB FA

ENTH-PRESS

L-PRESS

H-PRESS

CN8

COM-ESPE2

CN7

HPP

T-SENSOR3

T-SENSOR2CN5DC-MOTOR1

Silk Screen Specication

AC_N Neutral wire input of power supply

AC_L Live wire input of power supply

4V 4-way valve

VA-1 E-heater of chassis
HEAT Electric heating tape
ENTH Solenoid valve

FB To EXV2,pipe electric expansion valve,1-4 pin: driving impulse output; 5 pin: +12V;
FA To EXV1,pipe electric expansion valve,1-4 pin: driving impulse output; 5 pin: +12V;

ENTH-PRESS Signal input of pressure sensor 1 pin: GND; 2 pin: signal input; 3 pin: +5V;

L-PRESS Signal input of pressure sensor 1 pin: GND; 2 pin: signal input; 3 pin: +5V;

H-PRESS Signal input of pressure sensor 1 pin: GND; 2 pin: signal input; 3 pin: +5V;

CN8

To the wired controller, communication cable: 1 pin earthed, 2 pin B, 3 pin A, 4
pin+12power supply;

CN7 Communication between AP1 and AP2;communication cable 2 pin B, 3 pinA

COM-ESPE2 Pin for communication with the drive

HPP High pressure switch

T-SENSOR3 1 hole: +3.3V 2 hole: detection ; suction temperature sensor
T-SENSOR2 1, 2 hole: pipe temperature; 3, 4 hole: environment; 5, 6 hole: exhaust

CN5 Supply 18V DC power to the drive.

DC-MOTOR1

DC-MOTOR0

DC fan 1 pin: strong power supply; 3 pin: fan GND; 4 pin: +15V; 5 pin: control signal;
6pin:feedback signal;
DC fan 1 pin: strong power supply; 3 pin: fan GND; 4 pin: +15V; 5 pin: control signal;
6pin:feedback signal;

PWR1 Supply 310V DC power to the drive.

(2)Main Board (AP1): SMH-100IRA; SMH-140IRA

Air-to-water Heat Pump Monoblock

27

CN31

CN33

TR-IN

CN18

TR-OUT2

TR-OUT1

AC-L NE RR RUNH EAT

HEAT1

HEAT2

BAN-HEAT

OTHER_HEAT_

220V

X5

X10X92V1_OFF

2V1_ON

2V2_OFF

2V2_ON

3V1_OFF 3V2_OFF

3V2_ON3V1_ON

OTHER_HEAT_DCOUT

OTHER_HEAT_DCIN

CN6

CN4

COM-OUT

INDOOR_PUMP

POOL_PUMP

SOLOR_PUMP

T-SEN13

T-SEN12

T-SEN11

T-SEN10

T-SEN9

T-SEN8

T-SEN7

T-SEN5

T-SEN1

T-SEN6

T-SEN2

T-SEN3

T-SEN4

Silk Screen Location Introduction

AC-L - Live wire of power supply

N - Neutral wire of power supply

ERR X19 Error indicator

RUN X15 Running indicator

WT_HEAT X16 E-heater of water tank

HEAT1 X17 E-heater 1

HEAT2 X18 E-heater 2

BAN_HEAT X3 Antifreeze heater for the heat exchanger

SW_INDOOR

SW_SOLAR

SW_POOL

DOOR_INOVC_WT_HEATOVC_HEAT2OVC_HEAT1

OTHER_HEAT_220V X6 Assistant heat by 220VAC

X5 X5 Reserved

X10 X10 Reserved

X9 X9 Reserved

2V1_OFF X8 Electric magnetic 2-way valve1 is normally closed.

2V1_ON X7 Electric magnetic 2-way valve1 is normally open.

Air-to-water Heat Pump Monoblock

28

2V2_OFF X14 Electric magnetic 2-way valve2 is normally closed.

2V2_ON X13 Electric magnetic 2-way valve2 is normally open.

3V1_OFF X22 Electric magnetic 3-way valve1 is normally closed.

3V1_ON X21 Electric magnetic 3-way valve1 is normally open.

3V2_OFF X11 Electric magnetic 3-way valve2 is normally closed.

3V2_ON X12 Electric magnetic 3-way valve2 is normally open.

OTHER_HEAT_DCOUT X1 The dc output of assistant heat

OTHER_HEAT_DCIN X2 The dc input of assistant heat

COM-OUT CN5 Connect to AP2

CN6 CN6 Connect the wired controller

INDOR_PUMP CN4 Control and feedback of the water pump for the main unit

CN8 CN8 Feedback of the water pump for the main unit

POOL_PUMP CN9 Control and feedback of the water pump for the swimming pool

SOLAR_PUMP CN7 Control and feedback of the water pump for the solar system

SW_INDOOR CN25 Detection input of water ow switch for indoor

SW_SOLAR CN16 Detection input of water ow switch for solar

SW_POOL CN17 Detection input of water ow switch for pool

DOOR_IN CN23 Door detection input

OVC_WT_HEAT CN28 E-heater of water tank adhesion-proof protection detector

OVC-HEAT1 CN26 E-heater of indoor unit1 adhesion-proof protection detector

OVC-HEAT2 CN27 E-heater of indoor unit2 adhesion-proof protection detector

T-SEN4 CN20 Terminal of temperature sensor4

T-SEN3 CN22 Terminal of temperature sensor3

T-SEN2 CN21 Terminal of temperature sensor2

T-SEN1 CN11 Terminal of temperature sensor1

T-SEN6 CN12 Terminal of temperature sensor6

T-SEN5 CN10 Terminal of temperature sensor5

T-SEN7 CN29 Terminal of temperature sensor7

T-SEN8 CN32 Terminal of temperature sensor8

T-SEN9 CN30 Terminal of temperature sensor9

T-SEN10 CN24 Terminal of temperature sensor10

T-SEN11 CN15 Terminal of temperature sensor11

T-SEN12 CN13 Terminal of temperature sensor12

T-SEN13 CN14 Terminal of temperature sensor13

TR-OUT1 CN2 Transformer output 1 (12V)

TR-OUT2 CN3 Transformer output 2 (24V)

CN18 CN18 Power supply interface of the thermostat (220~240V)

TR-IN CN1 220V input of transformer

CN31 CN31 Power supply interface and control signal of the thermostat (24V))

CN33 CN33 Control signal of the thermostat

(3) Drive Board (AP4): SMH-100IRA

Air-to-water Heat Pump Monoblock

29

U

V

W

G-OUT

P-OU

L1-2

L2-1 DC-BUS1

T

PWR

L1-1

L2-2

Silk Screen Introduction

AC-L Live line input of the drive board

N Neutral line input of the drive board

L1-1 To PFC inductor brown line

L1-2 To PFC inductor white line

L2-1 To PFC inductor white line

L2-2 To PFC inductor blue line

U To compressor phase U

V To compressor phase V

W To compressor phase W

DC-BUS1 Pin for electric discharge of the high-voltage bar during test.

P-OUT Reserved

G-OUT Reserved

COMM

COMM1

PWR Power input of the drive board [1-GND,2-18V,3-15V]

AC-L

N

Communication interface[1-3.3V,2-TX,3-RX,4-GND]

COMM1

COMM

(4) Drive Board (AP4): SMH-140IRA

Air-to-water Heat Pump Monoblock

30

No Silk Screen Introduction

1 COMM Communication interface [1-3.3V, 2-TX, 3-RX, 4-GND]

2 PWR Switch power interface [1-310VDC, 3-GND]

3 X1 Connector to lter L1-F

4 X2 Connector to lter L2-F

5 X3 Connector to lter L3-F

6 X4 Connector to L1-1 OF PFC reactor 1

7 X5 Connector to L2-1 OF PFC reactor 2

8 X6 Connector to L3-1 OF PFC reactor 3

9 X9 Connector to L3-2 of PFC reactor 3

10 X8 Connector to L2-2 of PFC reactor 2

11 X7 Connector to L1-2 of PFC reactor 1

12 DC-BUS Pin for electric discharge of the high-voltage bar during test.

13 X501 Connector to the compressor phase-U

14 X502 Connector to the compressor phase-V

15 X503 Connector to the compressor phase-W

(5) Filter Board (AP3): SMH-100IRA

Air-to-water Heat Pump Monoblock

31

N-OUT1

N-OUT

L

-OUT

Silk Screen Introduction

AC-N Neutral line of the power supply for the main unit

AC-L Live line of the power supply for the main unit

AC-N AC-L

E1

E2

N-OUT

Neutral line output of the lter board (to the drive board)

Neutral line output of the lter board (to the main board )

N-OUT1 Reserved

L-OUT Live line output of the lter board (to the drive and main boards)

E1 To the grounding line of the main unit

E2 Reserved

(6) Filter Board (AP3): SMH-140IRA

Air-to-water Heat Pump Monoblock

32

1

2

3

4

1011

9

8

7

6

5

No Silk Screen Introduction

1 X1 Connector to power supply output line AC-L1

2 X2 Connector to power supply output line AC-L2

3 X3 Connector to power supply output line AC-L3

4 X4 Connector to power supply neutral line AC-N

5 X9 Connector to the grounding line E , reserved

6 X8 Connector to power supply neutral line N-F (mainboard AC-N)

7 X7 Connector to power supply output line L3-F (drive board L3-F)

8 X6 Connector to power supply output line L2-F (drive board L2-F)

9 X5 Connector to power supply output line L1-F (drive board L1-F and AC-L)

10 X11 Connector to power supply output line L1-F (drive board L1-F and AC-L)

11 X10 Connector to the grounding line E

18.2 Electric Wiring

Air-to-water Heat Pump Monoblock

33

18.2.1 Wiring principle

Refer to Section 16.4.

18.2.2 Electric wiring design

Wiring diagram: monobloc unit.

◆

SMH-100IRA

PE PE

XT1

Power

L

N

3

6

1

1

4

8

2

N

WatertankAuxiliary

electricheater

ConsumerConnection

PE PE

KM3

SpecificationX

1. The wires intheimaninalframes
areconnectedbythe consumer.

2. power supply forThermostat: If it is
220V AC,PleaseconnectTerminal
block(XT4) 21.22.23.24.25; If itis 24V
AC, pleaseconnectTerminal
block(XT4) 26.27.28.29.30.

3. If consumer needEH6 J Please
connectTerminal block(XT2)19.2 0
withEH3 Together.

5

4

6

2

7 8

2

KM2

8

WH

PE PE

Electricalheater
Earthing

9

4

KM1

6

RD

BK BU

EH2 EH1

Electricalbox
Earthing

CODE NAME

AP MainBoardOnlyForRT6

AP1 Indoor unitMain Board

AP2 OutdoorunitMain Board

AP3 Filter Board

80

AP4 DriveBoard

COMP Compressor

EH1 Watersideelectricalheater1

PE

EH2 Watersideelectricalheater2

EH3 Plateheatexchangeranti-freezing

EH4 Compressorbandheater

EH5 Bottomband heater

EH6 expansiontankheater

EKV1 Electronicexpansionvalvecoil1

EKV2 Electronicexpansionvalvecoil2

HL1 Runningindicatinglamp

HL2 Errorindicatinglamp

HP Highpressure switch

HT1 Temperature limiter1

HT2 Temperature limiter2

KM1 Auxiliaryelectric heater1ACcontactor

KM2 Auxiliaryelectric heater2ACcontactor

KM3 WatertankAuxiliaryelectric heater ACcontactor

L Electrical Inductance

L1 Electrical Reactance1

L2 Electrical Inductance 2

L

L3～L10

M1 DCmotor

M2 Indoorunit pump

RT1 Water-out tempsensor of thewhole unit

RT2 Water-intempsensorofthewholeunit

RT3 Auxiliary heaterleavingwatertemp sensor

RT4 Water-tanktempsensor1

RT5 Water-tanktempsensor2

RT6 Remote roomtemp sensor1

RT7 Remote roomtemp sensor2

RT8 Pool watertempsensor

RT9 Pool water-intemp sensor

RT10 Poolwater-outt temp sensor

RT11 Solarwater-outtemp sensor

RT12 Solarwater-intempsensor

RT13 SolarBoard temp sensor

RT14 Defrostingtemp sensor

RT15 Outdoortempsensor

RT16 Dischargedtempsensor

RT17 Suctiontempsensor

SP1 High pressuresensor

SP2 Lowpressure sensor

SP3 Enthalpy increasingpressure sensor

SW1 Solarwaterflowswitch

SW2 Swimming Pool waterflowswitch

SW3 Indoor unitswaterflow switch

TC Transformer

XT1 Terminal block(L,N,1,2)

1

XT2 Terminal block(1~20)

M
K

XT3 Terminal block(1~6)

XT4 Terminal block(21~42)

KM2

YV1 Increase Enthalpysolenoid valve

KM3

YV4 4-wayvalve coil

XT3

XT1

Magnetic ring

L1

COM-ESPE2

DC-MOTOR1

L10

Display

AP4

L5

26

AC-L

AC-N

CN5

FA

FB

CN8

AC-L

AC-N

82

L2

81

X1 X2

L6

86
87
88

89
90
91
92

5

4

EKV1

3

2

1

5

4

EKV2

3

2

1

31456

M1

COMM

PWR

U V W

93 94 95

AP3

L-OUT N-OUT

83 85

L3

L4

L7

COMP

3

PE

96

PE

84

AC-L

AP4

L2-1L1-1L1-2 L2-2

YE BU

BN

E1

N

WH

PE

board

L2

AP2

AP3

TC

AP1

XT4

HT1

XT2

24

20K

15K

50K

20K

HP

p

YV1

YV4

EH4

EH5

Communication line

RT6

L9

YE/GN

PE

25

RT14

RT15

T-SENSOR2

RT16

RT17

T-SENSOR3

76
77

HPP

SP1

S

H-PRESS

P

SP2

S

L-PRESS

P

SP3

S

ENTH-PRESS

P

ENTH

4V

HEAT

VA-1

AP3

L-OUT
N-OUT

AP2

CN7

48

34

Electric component positionmap

L

12

AC-L
N

XT2

L1（OFFG

32

10

L2F ONG

3-way

valve1

L1F OFFG
L2F ONG

2

4

2-way

valve2

L1F OFFG
L2F ONG

6

8

3-way

valve2

L1F OFFG
L2F ONG

2-way

valve1

HT2

Other

thermal

RunningIndi­catinglamp

Errorindi­catinglamp

EH3

EH6

Gate­controller

SW1

SW2

220VAC

220VACGND

OFF

HEAT

Thermostat

COOL

HEAT
COOL

24VACGND

24VAC

Thermostat

OFF

Pool-pump

controlsignal

Pool-pumpfault
feedback signal

Solar-pump

controlsignal

Solar-pumpfault
feedback signal

Pump Control

signal (OUT)

X22

1

33

X21

2

27

N

3

34

X14

4

35

X13

5

28

N

6

36

X12

7

37

X11

8

29

N

9

38

X8

10

39

X7

11

30

N

12

40

X6

13

31

N

14

41

HL1

X15

15

44

N

16

42

HL2

X19

17

45

N

18

43

X3

19

46

N

20

XT3

49

1

50

CN23

2

51

3

52

CN16

4

53

5

CN17

54

6

XT4

55
56

57
58
59

60
61
62
63
64

66
67
68
69

70
71
72
73

74
75

47

CN18

CN33

CN31

CN9

CN7

CN8

CN1 CN2 CN3

X23

1N

PE

AP1

2L

1L

2N

3L

3N

TC

21
22

23
24
25

26
27
28
29
30

31
32
33
34

35
36
37
38

39
40

20K

RT1

20K

CN10

CN13

CN11

CN12

CN14

CN20

CN21

CN22

CN24

CN29

CN30

X17

X18

CN26

CN27

CN28

X16

CN25

CN5

CN15

CN4

RT2

20K

RT3

50K

RT4

50K

78

RT5

79

15K

RT7

20K

RT8

20K

RT9

20K

RT10

20K

RT11

20K

RT12

50K

RT13

HT1

17

19

11
12

13
14

15
16

21

XT2

22 23

3

KM1

10

12

18

KM2

10

KM1-6

KM2-6

KM3-6

XT2

20

12

KM3

1

0

SW3

15K

2

CN1

AP

L8

BK/BN

M2

BU

L9

◆

SMH-140IRA

XT1

Power

L1

L2

L3

N

PE PE

XT4

W16

1

W17

2

W18

3

WatertankAuxiliary

electricheater

PE PE

SpecificationX

1. Thewires in theimaninalframes
areconnectedbythe consumer.

2. powersupply forThermostat: Ifit
is 220VAC,Pleaseconnect
Terminal block(XT3)21.22.23.24.25;
If itis 24VAC, pleaseconnect
Terminal block(XT3)26.27.28.29.30.

3. Ifconsumer needEH6 J Please
connectTerminal block(XT2)19.20
withEH3 Together.

Front

Underlayer

KM3
2

4653

Top

AP2AP4

W5

1

W6

W7

XT3

XT2

KM3 KM2

L1 L2 L3

W8 W9 W10

3

1

KM1

2465

HT1 HT2

RD BK BU RD BK BU

3

1

EH1

4

2

PE PE

Electricalheater
Earthing

AP3AP1

TC

XT1

XT5

XT4

KM1

W13

W12

W11

1

KM2

2465

1

EH2

6 5

2

HT3

3

3

4

Electricalbox
Earthing

6 5

W14 W15

3-way
valve1

2-way
valve2

3-way
valve2

2-way
valve1

Other
thermal

Running

indicatinglamp

Errorindicating

lamp

EH6

220VACGND

ThermostatThermostat

Pool-pump control

signal
Pool-pump fault
feedback signal

Solar-pump

controlsignal
Solar-pump fault
feedback signal

Pump Control

signal(OUT)

Gatecontroller

L1(OFF)
L2(ON)
N
L1(OFF)
L2(ON)
N
L1(OFF)
L2(ON)
N
L1(OFF)
L2(ON)

HL1

HL2

EH3

220VAC

OFF
HEAT
COOL

HEAT
COOL

24VACGND

24VAC

SW1

SW2

L6

W1

W2

W3

W4

AC-L
N

XT2

W45

W43

1

X22

W44

2

X21

3

W46

4

X14

W47

W50

5

X13

6

W48

7

X11

W51

W49

8

X12

9

W52

10

X8

W53

W54

11

N

N

OFF

X7

12

W55

13

X6

W59

14

W57

X15

15

W60

16

W58

X19

17

W61

18

W56

19

X3

W62

20

XT3

W63

21

W64

CN18

22

W70

23

W71

CN33

24

W72

25

W65

26

W66

27
28
29
30

31

32
33
34

35
36

37

38

39
40

XT4

5
6

7
8

9
10

AP1

W67
W68

CN31

W69

W73
W74
W75

CN9

W76

W77
W78
W79

CN7

W80

W81
W82

CN8

W102
W103

CN23

W106
W107

CN16

W104
W105

CN17

CN1

1N

1L

TC

RT1

CN10

RT2

RT3

CN13

RT4

CN11

W41
W42

CN12

RT7

CN14

RT8

CN20

RT9

CN21

RT10

CN22

RT11

CN24

RT12

CN29

RT13

CN30

W85
W86

CN26

W88

CN27

W87

X17

W90

X18

A1

W91
W92

CN28

W93

X16

CN25

CN5

2

CN15

L14

CN4

CN3

CN2

2N

2L

3N

3L

L5

X1(AC-L1)

X2(AC-L2)

AP3

X3(AC-L3)

X4(AC-N)

20K

20K

20K

RT14

RT15

50K

RT16

RT5

50K

RT17

15K

HP

20K

20K

20K

20K

20K

50K

KM1-2

KM2-2

EH5

W89

A2A1

KM1

EH4

W94

W95

A2

KM2

HT3

1

KM3-2

2

W96

XT5

W97

2

A2A1

KM3

SW3

RT6

15K

CN1

AP

M3

L15

BN

M

BU

YEGN

L15

PE

X9(E)

W112

PE

20K

15K

T-SENSOR2

50K

20K

T-SENSOR3

p

SP1

SP2

SP3

YV1

4YV

COM-ESPE2

W37
W38

HPP

H-PRESS

AP2

L-PRESS

ENT-PRESS

DC-MOTOR0

ENTH

4V

DC-MOTOR1

VA-1

HEAT

CN7

W98

2

XT5

W113

XT1-L1

1

W114

XT1-N

2

W19

X5(L1-F)

W20

X6(L2-F)

W21

X7(L3-F)

X11(L1)

RD

X8(N-F)

W22

L4

L1L2L3

BK

L13

X2(AC-N)

X1(AC-L)

PWR1 PWR

5

4

EKV1

FA

3

2

1

5

4

EKV2

FB

3

2

1

31456

CN8

M

M1

L16

4

Display

board

X1(L1-F)

X2(L2-F)

X3(L3-F)

L7

W25

X4(L1-1)

W26

X5(L2-1)

W27

X6(L3-1)

L8

W30

X9(L3-2)

W29

X8(L2-2)

W28

X7(L1-2)

L9

W31
W32

L10

W108
W109
W110
W111

L11

W33 W34 W35

L12

31456

M

M2

COMM

X501(U)

CODE NAME

4YV 4-wayvalvecoil

AP MainBoardOnlyFor RT6

AP1 IndoorunitMainBoard

AP2 OutdoorunitMainBoard

AP3 FilterBoard

AP4 DriveBoard

COMP Compressor

EH1,2 Auxiliaryelectricheater

EH3 Plateheat exchangerelectricheater

AP4

EH4 Compressorbandheater

EH5 Bottonband heater

EH6 Expandjarelectricheater

EKV1 Electric expansion valvecoil1

EKV2 Electric expansion valvecoil2

HL1 Running indicatinglamp

HL2 Errorindicatinglamp

HP Highpressure switch

HT1,2 Thermostat (WP95A-R)

HT3 Thermostat(WP75A-R)

L1~L3 Inductor

X502(V)

L4 Electrical Inductance

X503(W)

L5~L16 Magneticring

M1 DownDC Motor

M2 UPDC Motor

M3 Indoorunitpump

RT1 Water-outtemp sensor ofthewholeunit

RT2 Water-intemp sensor ofthewholeunit

RT3 Auxiliaryheaterwater-outtemp sensor

RT4 Water-tanktemp sensor 1

WVU

RT5 Water-tanktemp sensor 2

COMP
3～

RT6 RemoteAirtempsensor1

W36

RT7 RemoteAirtempsensor2

PE

RT8 Poolwatertempsensor

RT9 poolwater-intempsensor

RT10 Pool water-outtemp sensor

RT11 Solarwater-out tempsensor

RT12 Solarwater-intempsensor

RT13 Solarboard tempsensor

RT14 Defrosting tempsensor

RT15 Outdoortempsensor

RT16 Dischargedtempsensor

RT17 Suctiontempsensor

SP1 Highpressure sensor

SP2 Low pressure sensor

SP3 Increaseenthalpypressuresensor

SW1 Solarwaterflow switch

SW2 Pool waterflowswitch

SW3 Indoor unitswaterflowswitch

TC Transformer

YV1 Increaseenthalpysolenoidvalve

18.2.3 Terminal Board

Air-to-water Heat Pump Monoblock

34

◆

SMH-100IRA

◆

SMH-140IRA

19 Commissioning

Air-to-water Heat Pump Monoblock

35

19.1 Check before startup

For safety of users and unit, the unit must be started up for check before debugging. The

procedures are as below:

The following items shall be performed by qualied repair persons.

Conrm together with the sales engineer, dealer, installing contractor and customers for the following items
nished or to be nished.

No. Conrmation of Installation

If the contents of Application for Installation of this Unit by Installer are real. If not, debugging

1

will be refused.
Is there written notice in which amendment items are shown in respect of unqualified

2

installation?

√

□

□

3 Are Application for Installation and Debugging list led together?

No. Pre-check

Is appearance of the unit and internal pipeline system ok during conveying, carrying or

1

installation?

2 Check the accessories attached with the unit for quantity, package and so on.

3 Make sure there is drawings in terms of electricity, control, design of pipeline and so on.

Check if installation of the unit is stable enough and there is enough space for operation and

4

repair.

5 Completely test refrigerant pressure of each unit and perform leakage detection of the unit.

6 Is the water tank installed stably and are supports secure when the water tank is full?

Are heat insulating measures for the water tank, outlet/inlet pipes and water replenishing pipe

7

proper?
Are the nilometer of water tank, water temperature indicator, controller, manometer, pressure

8

relief valve and automatic discharge valve etc. installed and operated properly?
Does power supply accord with the nameplate? Do power cords conform to applicable

9

requirements?

Is power supply and control wiring connected properly according to wiring diagram? Is

10

earthing safe? Is each terminal stable?

11 Are connection pipe, water pump, manometer, thermometer, valve etc. are installed properly?

12 Is each valve in the system open or closed according to requirements?

13 Conrm that the customers and inspection personnel of Part A are at site.

14 Is Installation Check-up Table completed and signed by the installation contractor?

□

√

□

□

□

□

□

□

□

□

□

□

□

□

□

□

Attention: If there is any item marked with ×, please notify the contractor. Items listed above are just for

reference.

General Evaluation: Debugging □ Amendment □

Conrmed Items after pre-checking

Judge the following items (if there is not any lling, qualication will be regarded.)

a: Power supply and electric control system b: Loading calculation

c: Heating problems of Unit d: Noise problem

e: Pipeline problem f: Others

Normal debugging work can’t be performed unless all installation items are qualied. If there is any
problem, it must be solved rstly. The installer will be responsible for all costs for delay of debugging

and re-debugging incurred by any problem which is not solved immediately.

Submit schedule of amending reports to installer.

Is the written amending report which should be signed after communication provided to installer?

Yes ( ) No ( )

19.2 Test run

Air-to-water Heat Pump Monoblock

36

Test run is testing whether the unit can run normally via preoperation. If the unit cannot run
normally, find and solve problems until the test run is satisfactory. All inspections must meet the
requirements before performing the test run. Test run should follow the content and steps of the table
below:

The following procedure should be executed by experience and qualied maintenance men.

No. Start up the pretest procedure

Notice: before test, ensure that all power must be cut off, including the far- end power switch, otherwise, it
may cause casualty.

1 Ensure that the compressor of the unit is preheated for 8h.

Caution: heat the lubricating oil at least 8h in advance to prevent refrigerant from mixing with the

lubricating oil, which may cause damage to the compressor when starting up the unit.

Check whether the oil temperature of the compressor is obviously higher than the outdoor ambient

2

temperature.

Caution: if the oil temperature of the compressor is obviously higher than the outdoor ambient

temperature, it means that the heating tape of compressor is damaged. In that case, the compressor will be
damaged easily. Therefore, repair the heating tape before using the unit.

Check whether the phase sequence of the main power supply is correct. If not, correct the phase

3

sequence rstly.

Recheck the phase sequence before start-up to avoid reverse rotation of the compressor which may

damage the unit.

Apply the universal electric meter to measure the insulation resistance between each outdoor

4

phase and earth as well as between phases.

Caution: defective earthing may cause electric shock.

No. Ready to start

Cut off all temporary power supply, resume all the insurance and check the electricity for the last
time.

1

Check the power supply and voltage of the control circuit; _____V must be ±10% within the range
of rated operating power.

No. Start up the unit

1 Check all the conditions needed to start up the unit: oil temperature, mode, required load etc.

Start up the unit, and observe the operation of compressor, electric expanding valve, fan motor and
water pump etc.

2

Note: the unit will be damaged under abnormal running state. Do not operate the unit in states of
high pressure and high current.

Others:

Estimation or suggestion on the general running situation: good, modify

Identify the potential problem (nothing means the installation and debugging are in
accordance with the requirements.)

a. problem of power supply and electric control system:
b. problem of load calculation:

Items for
acceptance
after debugging

c. outdoor refrigerant system:
d. noise problem:

e. problem of indoor and piping system:
h. other problems:

During operation, it is needed to charge for the maintenance due to non-quality problems
such as incorrect installation and maintenance.

Acceptance

Is the user trained as required? Please sign. Yes( ) No( )

20 Daily Operation and Maintenance

Air-to-water Heat Pump Monoblock

37

In order to avoid damage of the unit, all protecting devices in the unit had been set before delivery,
so please do not adjust or remove them.

For the rst startup of the unit or next startup of unit after long-period stop (above 1 day) by cutting

off the power, please electrify the unit in advance to preheat the unit for more than 8 hours.

Never put sundries on the unit and accessories. Keep dry, clean and ventilated around the unit.

Remove the dust accumulated on the condenser n timely to ensure performance of the unit and to

avoid stop of the unit for protection.

In order to avoid protection or damage of the unit caused by blockage of the water system, clean

the lter in water system periodically and frequently check water replenishing device.

In order to ensure anti-freezing protection, never cut off the power if ambient temperature is below
zero in winter.

In order to avoid frost crack of the unit, water in the unit and pipeline system not used for a long
period should be drained. In addition, open the end cap of the water tank for drainage.

Never frequently make the unit on/off and close the manual valve of the water system during
operation of the unit by users.

Ensure frequent check to the working condition of each part to see if there is oil stain at pipeline
joint and charge valve to avoid leakage of refrigerant.

If malfunction of the unit is out of control of users, please timely contact with authorized service
center.

Notes:

The water pressure gage is installed in the returning water line in the unit. Please adjust the
hydraulics system pressure according to next item:

If the pressure is less than 0.5 bar, please recharge the water immediately;

①

When recharging, the hydraulics system pressure should be not more than 2.5Bar.

②

Troubleshooting

Malfunctions Reasons Troubleshooting

Compressor does
not start up

Heavy noise of fan

Heavy noise of
compressor

Water pump does
not run or runs
abnormally

Compressor starts or
stops frequently

The unit does not
heat although
compressor is
running

Poor efciency of hot

water heating

①

Power supply has problem.

②

Connection wire is loose.

③

Malfunction of mainboard.

④

Malfunction of compressor.

①

Fixing bolt of fan is loose.

②

Fan blade touches shell or grill.

③

Operation of fan is unreliable.

①

Liquid slugging happens when liquid

refrigerant enters into compressor.

②

Internal parts in compressor are broken.

①

Malfunction of power supply or terminal.

②

Malfunction of relay.

③

There is air in water pipe.

①

Poor or excess refrigerant.

②

Poor circulation of water system.

③

Low load.

①

Leakage of refrigerant.

②

Malfunction of compressor.

①

Poor heat insulation of water system.

②

Poor heat exchange of evaporator.

③

Poor refrigerant of unit.

④

Blockage of heat exchanger at water side.

①

Phase sequence is reverse.

②

Check out and re-x.

③

Find out the reasons and repair.

④

Replace compressor.

①

Re-x xing bolt of fan.

②

Find out the reasons and adjust.

③

Replace fan.

①

Check if expansion valve is failure and

temp. sensor is loose .If that, repair it.

②

Replace compressor.

①

Find out the reasons and repair.

②

Replace relay.

③

Evacuate.

①

Discharge or add part of refrigerant.

②

Water system is blocked or there is air in

it.Check water pump, valve and pipeline.

Clean water lter or evacuate.

③

Adjust the load or add accumulating

devices.

①

Repair by leakage detection and add

refrigerant.

②

Replace compressor.

①

Enhance heat insulation efficiency of the

system.

②

Check if air in or out of unit is normal and

clean evaporator of the unit.

③

Check if refrigerant of unit leaks.

④

Clean or replace heat exchanger.

NOTE CONCERNING PROTECTION OF
ENVIRONMENT

This product must not be disposed of via normal household waste after its service life, but must be
taken to a collection station for the recycling of electrical and electronic devices. The symbol on the
product, the operating instructions or the packaging indicate such disposal procedures. The materials
are recyclable in accordance with their respective symbols. By means of re-use, material recycling or
any other form of recycling old appliances you are making an important contribution to the protection
of our environment. Please ask your local council where your nearest disposal station is located.

INFORMATION CONCERNING USED REFRIGERANT
MEDIUM

This unit is containing fluorinated gases included in the Kyoto protocol. The maintanance and the liquidation must
be carried out by qualified personel.
Type of refrigerant: R410A
The composition of the cooling medium R410A: (50% HFC-32, 50% HFC-125)
The quantity of the refrigerant: please see the unit label.
The value GWP: 2088
GWP = Global Warming Potential

In case of quality problem or other please contact your local supplier or authorized service center.

Emergency number: 112

PRODUCER

SINCLAIR CORPORATION Ltd.
1-4 Argyll St.
London W1F 7LD
Great Britain

www.sinclair-world.com
This product was manufactured in China (Made in China).

REPRESENTATIVE, TECHNICAL SUPPORT

NEPA spol. s r.o.
Purkyňova 45
612 00 Brno
Czech republic

Tel.: [phone]
Fax: [phone]

www.sinclair-solutions.com
[e-mail]