Toshiba HWS-P805XWHM3-E, HWS-P805XWHT6-E, HWS-P805XWHT9-E, HWS-P1105XWHT6-E, HWS-P1105XWHT9-E Service Manual

AIR TO WATER HEAT PUMP

Service Manual

Model name:

FILE No. A10-1705

Hydro unit

HWS-P805XWHM3-E(TR)
HWS-P805XWHT6-E(TR)
HWS-P805XWHT9-E
HWS-P1105XWHM3-E(TR)
HWS-P1105XWHT6-E(TR)
HWS-P1105XWHT9-E(TR)

Outdoor unit

HWS-P805HR-E(TR)
HWS-P1105HR-E(TR)

Contents

1 Safety precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Refrigerant (R410A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-1.Safety during installation and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2-2.Installing refrigerant pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2-2-1.Steel pipe and joint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2-2-2.Processing of piping materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2-3.Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2-3-1.Necessary tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2-4.Recharging of refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2-5.Brazing of pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-1.Materials of brazing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-2.Flux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2-5-3.Brazing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Outside drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

4-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4-3.Hot water cylinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5 Wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5-3.Hot water cylinder unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6 Key electric component rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6-3.Hot water cylinder unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6-4.Water heat exchange control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6-5.Outdoor control board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7 Refrigeration cycle / Water system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7-1.Water system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7-2.Refrigeration cycle system diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8 Operational description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

1

9 Method of defect diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9-1.Matters to be confirmed first. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9-1-1.Check the power supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9-1-2.Check for any miswiring of the connection cables between the hydro unit and the outdoor unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9-1-3.About the installation of the temperature sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

9-2.Non-defective operation (program operation) … No fault code display appears.. . . . . . . . . . . . . . 72

9-3.Outline of the determination diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9-3-1.Procedure of defect diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9-3-2.How to determine from the check code on the remote controller . . . . . . . . . . . . . . . . . . . 73

9-3-3.How to cancel a check code on the remote controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9-3-4.How to diagnose by error code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

9-4.Diagnosis flow chart for each error code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

9-4-1.Hydro unit failure detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

9-4-2.Outdoor unit failure detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

9-4-3.Temperature sensor, temperature-resistance characteristic table . . . . . . . . . . . . . . . . . 113

9-5.Operation check by PC board switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

9-5-1.Operation check mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

9-6.Brief method for checking the key components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

9-6-1.Hydro unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

9-6-2.Outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

10 Hydro unit and outdoor unit settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

11 Replacement of the service PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

12 How to exchange main parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

13 For cooling installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

14 Periodic inspection items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

15 Part exploded view, part list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

2

1 Safety precautions

The unit and this service guide list very important safety precautions.
Understand the following details (indications and symbols) before reading the body text, and follow the instructions.

[About indication]

Indication Meaning of Indication

DANGER

WARNING

CAUTION

* Property damage indicates extended damage to property, furniture, livestock, or pets.

Indicates that a wrong operation may cause a service engineer and the third persons
around to get fatal or serious injuries.

Indicates that a wrong operation may cause a service engineer and the third persons
around to get fatal or serious injuries, or that unit defective after the operation may cause
a user to have a similar serious accident.

Indicates that a wrong operation may cause a service engineer and the third persons
around to get injuries or may cause property damage*, or that unit defective after the
operation may cause a user to have a similar accident.

[About symbols]

Symbols Meaning of Symbols

Indicates a forbidden action.
Specific forbidden actions are described in text near the symbol.

Indicates a forcible (must do) action.
Specific forcible actions are described in text near the symbol.

Indicates a caution (including danger and warning).
Specific cautions are described in picture or text inside or near the symbol.

DANGER

<Turn off the power breaker>
Turn off the power breaker before removing the front panel and cabinet.

• Failure to do so may cause a high voltage electric shock, leading to death or injury.

• During an operation, the second side circuit of high pressure transmission(*) are applied with a high voltage of 230 V
or higher.

• Touching the circuit even with an electrical insulator, let alone a bare hand or body, causes an electric shock.

∗: For details, see the schematic.

<Discharge between terminals>
When the front panel and cabinet are removed, make short-circuit current to discharge between high pressure

capacitor terminals.

• Failure to do so may cause a high voltage electric shock, leading to death or injury.

• After the power is turned off, the high pressure capacitor is still charged with high voltage.

<Forbidden>
Do not turn on the power breaker after removing the front panel cabinet.

• Failure to do so may cause a high voltage electric shock, leading to death or injury.

WARNING

<Check earth ground>
Before starting failure diagnosis or repair, check that the earth wire (∗) is connected to the unit ground terminal.

• An unconnected earth wire could cause an electric shock if electric leakage occurs.

• If the earth ground is not properly connected, ask an electrical worker for rework of the ground connection.

∗: Earth wire of class D grounding

3

WARNING

<No modification>
Do not modify the unit.

• Do not disassemble or modify the parts also.

• A fire, an electric shock, or an injury may occur.

<Use specified parts>
Use the specified parts (∗) when replacing them.

• Using parts other than specified ones may cause a fire or an electric shock.

∗: For details, see the parts price list.

<Keep children away from unit>
Keep any person (including children) other than service engineers away from a failure diagnosis or repairing place.

• A tool or disassembled parts may cause an injury.

• Advise the customer to keep the third persons (including children) away from the unit.

<Insulation treatment>
After connecting a cut lead with a crimp contact, discharge by facing the closed side upward.

• Connect lead wires with crimping terminals and turn the closed end upwards to avoid exposure to water.

<Watch out for fire>
Observe the following instructions when repairing the refrigerant cycle.

(1) Watch out for surrounding fire. Always put out the fire of stove burner or other devices before starting the repair.

Should the fire fail to be put out, the oil mixed with refrigerant gas could catch fire.

(2) Do no use a welder in a closed room.

A room with no ventilation may cause carbon monoxide poisoning.

(3) Keep away flammable materials.

The materials may catch the fire of a welder.

<Use refrigerant carefully>
Check the refrigerant name to use the tools and members appropriate for the refrigerant.

• A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit. In
addition, the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling.

Never use refrigerant other than R410A for Air to Water Heat Pump using R410A. Also, never use R410A for Air to
Water Heat Pump using other refrigerant (such as R22).

• A mixture of R410A with different ones excessively raises the pressure in the refrigerant cycle, leading to an injury
due to burst.

Do not make additional charge of the refrigerant.

• An additional charge when refrigerant gas leaks changes the refrigerant composition in the refrigerant cycle,
causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant
cycle with more than the specified amount of refrigerant charged. This may cause burst or an injury. If the
refrigerant gas leaks, perform refrigerant recovery or other operation to make the Air to Water Heat Pump contain
no refrigerant, and then perform vacuuming. After that, refill the unit with the defined amount of liquid refrigerant.
Never charge refrigerant exceeding the amount specified.

When the refrigerant cycle is refilled with refrigerant, do not enter air or refrigerants other than the specified
refrigerant, R410A.

• A mixture of R410A with air or an inappropriate substance causes excessive high pressure inside the refrigerant
cycle, leading to an injury due to burst.

Check that there is no refrigerant gas leak after the installation is completed.

• If it catches fire of a fan heater, a space heater, or a stove, poisonous gases may be produced.

<Be careful with wiring>
After a repair is completed, be sure to reassemble the parts and put the wiring back to its original state. In addition,

be careful with the internal wiring not to be caught in a cabinet or panel.

• A defective assembly or wiring may cause a disaster at a customer site due to electrical leakage or a fire.

<Check for water leak>
After the repair of a water pathway is completed, check that there is no water leak.

• In using the product, water leak may cause a fire at a customer site due to electrical leakage or an electric shock.

4

WARNING

<Check insulation>
After the work is completed, check with an insulating-resistance tester (500V) that the insulation resistance between

the live and dead-metal parts is 2 MΩ or higher.

• A low insulation resistance may cause a disaster at a customer site due to electrical leakage or an electric shock.

<Ventilate>
Ventilate if refrigerant gas leaks during service work.

• Should refrigerant gas catch fire, poisonous gases may be produced. A closed room full of leaking refrigerant
results in the absence of oxygen; it is dangerous. Make sure to ventilate.

<Caution: electric shock>
When checking a circuit while energized if necessary, use rubber gloves not to contact the live part.

• Contact with the live part may cause an electric shock.

• The unit contains high-voltage circuits. Contact with a part in the control board with your bare hand may cause an
electric shock. Take enough care to check circuits.

<Turn off the power breaker>
Because the electrical components are energized with high voltage, always turn off the power breaker before

starting to work.

• Failure to do so may cause an electric shock.

<Always do>
Should refrigerant gas leak, find where the gas leaks and properly repair it.

• To stop the repair work because the leakage location cannot be identified, perform refrigerant recovery and close
the service valve. Failure to do so may cause the refrigerant gas to leak in a room. Although refrigerant gas alone
is harmless, if it catches fire of a fan heater, a space heater, or a stove, poisonous gases may be produced.

When installing the unit or re-installing it after relocation, follow the installation guide for proper operation.

• A defective installation may cause a refrigerant cycle defective, a water leak, an electric shock, or a fire.

<Check after repair>
After a repair is completed, check for any abnormality.

• Failure to do so may cause a fire, an electric shock, or an injury.

• Turn off the power breaker to perform check.

After a repair is completed (and the front panel and cabinet are placed), make a test run to check for any abnormality
such as smoke or abnormal sound.

• Failure to do so may cause a fire or an electric shock. Place the front panel and cabinet before making a test run.

<Check after re-installation>
Check that the following are properly performed after re-installation.

(1) The earth wire is properly connected.
(2) The installation is stable without any tilt or wobbles.

Failure to check them may cause a fire, an electric shock, or an injury.

CAUTION

<Wear gloves>
Wear gloves (∗) when performing repair.

• Failure to do so may cause an injury when accidentally contacting the parts.

∗: Thick gloves such as cotton work gloves

<Cooling check>
Perform service work when the unit becomes cool enough after the operation.

• High temperature of compressor piping or other equipment after a cooling or heating operation may cause burn.

<Tighten with torque wrench>
Tighten a flare nut with a torque wrench in the specified method.

• A flare nut tightened too much might crack after a long period, causing refrigerant leak.

5

2 Refrigerant (R410A)

This Air to Water Heat Pump adopts a refrigerant HFC (R410A) to prevent destruction of the ozone layer.
The working pressure of R410A refrigerant is 1.6 times higher than that of the conventional refrigerant R22.The

refrigerant oil is also changed for the new refrigeration. Therefore, during installation or service work, be sure that
water, dust, former refrigerant, or refrigeration machine oil does not enter the refrigerant cycle of the new type
refrigerant Air to Water Heat Pump. A wrong installation or service operation may cause a serious accident.
Read carefully the following instructions to use the tools or members for R410A for safety work.

2-1. Safety during installation and service

• Use only the refrigerant R410A for Air to Water Heat Pump using R410A.
A mixture of R410A with different ones excessively raises the pressure in a refrigerant cycle, leading to an injury
due to burst.

• Check the refrigerant name to use the tools and members appropriate for the refrigerant.
A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit. In
addition, the diameter of the service port is changed from that of the conventional R22 to prevent incorrect filling.

• Ventilate if refrigerant gas leaks during service work.
Should refrigerant gas catch fire, poisonous gases may be produced. A closed room full of leaking refrigerant
results in the absence of oxygen; it is dangerous. Make sure to ventilate.

• When the refrigerant cycle is refilled with refrigerant, do not mix air or refrigerants other than the specified
refrigerant, R410A.
A mixture of R410A with air or an inappropriate substance causes excessive high pressure inside the refrigerant
cycle, leading to an injury due to burst.

• Check that no refrigerant gas leaks after the installation is completed.
Should a refrigerant gas leak in a room and catch fire, poisonous gases may be produced.

• When installing the unit that contains large amount of refrigerant such as Air to Water Heat Pump, take measures
to prevent the refrigerant from exceeding the threshold concentration in case it leaks.
Should leaking refrigerant exceed the threshold concentration could cause an accident due to oxygen deficient.

• When installing the unit or re-installing it after relocation, follow the installation guide for proper operation.
A defective installation may cause a refrigerant cycle defective, a water leak, an electric shock, or a fire.

• Do not modify the product. Do not disassemble or modify the parts also.
A fire, an electric shock, or an injury may occur.

6

2-2. Installing refrigerant pipe

2-2-1. Steel pipe and joint

For refrigerant piping, steel pipe and joints are mainly used. Select those comply with JIS (Japanese Industrial
Standards) for a service work. Also, use such clean piping materials that less impurities attach to the inside of pipe
and joints.

Copper pipe

Use copper pipe of the “copper and copper alloy seamless pipe” type with attach oil quantity of 40 mg / 10 m or less.
Do not use pipe that is cracked, distorted, or discoloured (especially inside).The expansion valve or capillary may
get clogged with impurities.
Considering that Air to Water Heat Pump using R410A is higher in pressure than those using the conventional R22,
be sure to select the material that comply with the standard.
Table 2-1 shows the thickness of copper pipe used for R410A.
Never use commercially available thin-walled copper pipe of 0.8 mm thick or less.

Table 2-1 Wall thickness of copper pipe

Wall thickness (mm)

Nominal diameter Outer diameter R410A

3/8 9.52 0.80

5/8 15.88 1.00

Joints

For the joint of copper pipe, flared joint and socket joint are used. Remove impurities from a joint before using it.

• Flared joint
A flared joint cannot be used for the copper pipe whose outer diameter is 20 mm or larger. A socket joint can be
used instead in that case.
Table 2-2-3 and 2-2-4 show the dimensions of flare pipe, the end of flared joint, and flare nuts.

• Socket joint
A socket joint is used to connect the thick-walled pipe of mainly 20 mm or larger in diameter.
Table 2-2 shows the wall thickness of socket joints.

Table 2-2 The minimum wall thickness of socket joints

Nominal diameter

3/8 9.52 0.80

5/8 15.9 1.00

Reference of outer diameter of

copper pipe connected (mm)

Minimum joint wall thickness

(mm)

7

2-2-2. Processing of piping materials

Figure 2-2-1
Flare dimension

DCB A

45° - 46°

43° - 45°

When installing refrigerant pipe, prevent water or dust from entering the pipe, and do not use oil other than lubricant
used for Air to Water Heat Pump. Make sure that no refrigerant leak occurs.

If piping needs lubrication, use lubricating oil whose water content is removed.
After the oil is put in, be sure to seal the container with air proof cover or other covers.

Flare and precautions

1) Cut a pipe.

Cut slowly with a pipe cutter so that the pipe is not distorted.

2) Remove burr and flaw.

A burr or flaw in a flare part may cause refrigerant leak. Remove carefully all the burrs, and clean up the
cut ends before installation.

3) Insert a flare nut.

4) Flare

Check that the clasps and copper pipe are clean. Flare
correctly using the clasp. Use a flare tool for R410A or the
conventional one. Flare processing dimension varies
depending on the flare tool type. When using the
conventional flare tool, use a gauge for size adjustment
to secure the A dimension.

D

A

Table 2-2-3 Flare processing related dimension for R410A

Nominal
diameter

3/8 9.52 0.8 0 to 0.5 1.0 to 1.5 2.0 to 2.5

5/8 15.9 1.0 0 to 0.5 1.0 to 1.5 2.0 to 2.5

Outer diameter

(mm)

Wall thickness

(mm)

Flare tool for R410A

clutch type

Table 2-2-4 Dimension of flare for R410A and flare nut

Nominal

diameter

3/8 9.52 0.8 13.0 13.2 9.7 20 18

5/8 15.9 1.0 19.1 19.7 15.9 24.5 26

Outer diameter

(mm)

Wall thickness

(mm)

ABCD

Dimension (mm)

Figure 2-2-2 Relationship between flare nut and flare surface

A (mm)

Conventional flare tool

Clutch type Butterfly-nut type

Flare nut width

(mm)

8

Flare connecting procedure and precautions

NOTE

1) Make sure that the flare and connecting portions do not have any flaw and dust.

2) Correctly align the flared surface and the connecting axis.

3) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is
the same as that for the conventional R22. If the torque is weak, gas leakage may occur. If it is too strong,
the flare nut may crack and may be made non-removable. When choosing the tightening toque, comply
with values designated by products. Table 2-2-5 shows reference values.

When applying oil to the flare surface, be sure to use oil designated by the product. Using any other oil deteriorates
the lubricating oil, possibly causing the compressor to burn out.

Table 2-2-5 Tightening torque of flare for R410A (Reference values)

Nominal diameter Outer diameter (mm) Tightening torque N•m (kgf•m)

3/8 9.52 33 to 42 (3.3 to 14.2)

5/8 15.9 66 to 82 (6.8 to 8.2)

9

2-3. Tools

2-3-1. Necessary tools

In Air to Water Heat Pump using R410A, the service port diameter of packed valve of the outdoor unit is changed
to prevent mixing of other refrigerant. To reinforce the pressure resistance, flare dimensions and opposite side
dimensions of flare nut (For Ø 12.7 copper pipe) of the refrigerant piping are lengthened.

Because the refrigerating machine oil is changed, mixing of oil may generate sludge, clog capillary, or cause other
problems. Accordingly, the tools to be used include:

• tools dedicated for R410A (Those that cannot be used for the conventional refrigerant, R22)

• tools dedicated for R410A, but can be also used for the conventional refrigerant, R22

• tools that can be used for the conventional refrigerant, R22.
The following table shows the tools dedicated for R410A and their interchangeability.

Tools dedicated for R410A (The following tools must be for R410A)

Tools whose specifications are changed for R410A and their interchangeability

R410A Air to Water Hear Pump

No. Tool to be used Usage

1 Flare tool Pipe flaring Yes *(Note 1) Yes

2

3 Torque wrench (For Ø15.9) Connection of flare nut Yes No No

4 Gauge manifold

5 Charge hose

6 Vacuum pump adapter Vacuum evacuating Yes No Yes

7

8 Refrigerant cylinder Refrigerant charge Yes No No

9 Leakage detector Gas leakage check Yes No Yes

10 Charging cylinder Refrigerant charge *(Note 2) No No

Copper pipe gauge for

adjusting projection margin

Electrical balance for

refrigerant charging

Flaring by conventional

flare tool

Evacuating, refrigerant

charge, run check, etc.

Refrigerant charge Yes No Yes

For R410A

Existence of new

equipment

installation

Conventional

equipment can be

used

Yes *(Note 1) *(Note 1)

Yes No No

Conventional refrigerant

Air to Water Heat Pump

installation

New equipment can be

used with conventional

refrigerant

* (Note 1) Flaring for R410A by using the conventional flare tool requires projection margin adjustment. This

adjustment requires copper pipe gauge or other instrument.

* (Note 2) A charging cylinder for R410A is currently under development.

General tools (Conventional tools are available)

In addition to the above dedicated tools, the following equipment also available for R22 is necessary as the general
tools.

1. Vacuum pump
Use this by attaching vacuum pump

adapter.

4. Reamer 9. Hole core drill (Ø65)

5. Pipe bender 10. Hexagon wrench
(Opposite side 4 mm)6. Level vial

2. Torque wrench (For Ø6.35) 7. Screwdriver (+, –) 11. Tape measure

3. Pipe cutter 8. Spanner or Monkey wrench 12. Metal saw

Also prepare the following equipment for other work methods or run check.

1. Clamp meter 3. Insulation resistance meter

2. Thermometer 4. Electroscope

10

2-4. Recharging of refrigerant

NOTE

(For refrigerant charging, see the figure below)

Recover the refrigerant, and check that no
refrigerant remains in the refrigerant cycle.

Connect the charge hose to packed valve service
port on the outdoor unit's gas side.

Connect the charge hose to the vacuum pump
adapter.

Open fully both packed valves on the liquid and
gas sides.

Open fully the handle of gauge manifold Lo, turn on the
vacuum pump, and then perform vacuum evacuating.

When the compound gauge's pointer indicates

-0.1 MPa (-76 cmHg), close fully the handle Lo and turn
off the vacuum pump.

Let the equipment stay as it is for one to two minutes
and check that the compound gauge pointer does not
return.

Place the refrigerant cylinder to the electronic balance,
connect the connecting hose to the cylinder and the
connecting port of the electronic balance, and then
charge liquid refrigerant.

(Hydro unit)

(Outdoor unit)

Open

Open

Service port

Check valve

Open/close valve
for charging

Electronic balance for refrigerant charging

CloseOpen

Refrigerant cylinder (with siphon)

Recharge, if necessary, the specified amount of new refrigerant according to the following procedure.

• Never charge refrigerant exceeding the specified amount.

• If the specified amount of refrigerant cannot be charged, charge it a little at a time while running refrigerant
recovery (pump down).

• Do not make additional charging.
An additional charge when refrigerant leaks changes the refrigerant composition in the refrigerant cycle,
causing the characteristics change of the Air to Water Heat Pump or excessive high pressure in the refrigerant
cycle with more than the specified amount of refrigerant charged. This may cause burst or an injury.

Fig. 2-4-1 Configuration of refrigerant charging

11

NOTE

• Make sure that the setting is appropriate so that liquid can be charged.

NOTE

[Cylinder with siphon]

[Cylinder without siphon]

Gauge manifold

Outdoor unit

Refrigerant
cylinder

Electronic balance

Gauge manifold

Outdoor unit

Refrigerant
cylinder

Electronic balance

Siphon pipe

• A cylinder with siphon enables liquid to be charged without the cylinder turned upside down.

• Because R410A is HFC mixed refrigerant, charging with gas changes the charged refrigerant composition,
causing the equipment characteristics to change.

12

2-5. Brazing of pipes

NOTE

NOTE

NOTE

2-5-1. Materials of brazing

Silver brazing metal

Silver brazing metal is an alloy mainly composed of
silver and copper.

It uses iron, copper, or copper alloy, and is relatively
expensive though it excels in soldering.

Phosphor bronze brazing metal

Phosphor bronze brazing metal is generally used to
join copper or copper alloy.

Low temperature brazing metal

Low temperature brazing metal is generally called
solder, and is an alloy of tin and lead. Do not use it for
refrigerant piping because its adhesive capacity is low.

• Phosphor bronze brazing metal tends to react with
sulfur, producing a fragile compound water solution.
This may cause gas leakage. Therefore, use other
type of brazing metal at a hot spring resort or similar
place, and coat the surface with coatings.

• To braze the pipe again while performing service
work, use the same type of brazing metal.

2-5-2. Flux

Type of flux

• Non-corrosive flux
It is generally a compound of borax and boric acid.
It is effective when brazing temperature is higher
than 800 °C.

• Active solvent
Most of this type of flux is generally used for silver
brazing.
It features the increase of oxide film while moving the
capability to the borax-boric acid compound to add
compounds such as potassium fluoride, potassium
chloride, or sodium fluoride.

Piping materials for brazing and brazing
metal / flux

Piping material

Copper - Copper Phosphor copper Do not use

Copper - Iron Silver Paste flux

Iron - Iron Silver Vapour flux

• Do not enter flux into the refrigerant cycle.

• If chlorine contained in the flux remains within the
pipe, the lubricating oil deteriorates. Because of
this, use a flux that does not contain chlorine.

• When adding water to the flux, use water that does
not contains chlorine. (e.g. distilled water or ion­exchange water)

• Remove the flux after brazing.

Brazing metal to be

used

Flux to be used

Why flux is necessary

• Removing all the oxide film and any foreign matter
on the metal surface assists the flow of brazing
metal.

• Flux prevents the metal surface from being oxidized
in the course of brazing.

• Reducing the brazing metal's surface tension
enables the brazing metal to adhere for better metal
processing.

Characteristics of flux

• The activation temperature of flux matches the
brazing temperature.

• A wide effective temperature range makes flux hard
to carbonize.

• It is easy to remove slag after brazing.

• The corrosive action to the treated metal and brazing
metal is minimum.

• The good performance of flux gives no harm to a
human body.
Since flux works in a complicated manner as
described above, select an appropriate type of flux
according to metal treatment type, brazing metal and
brazing method, or other conditions.

2-5-3. Brazing

Brazing must be performed by a person qualified and
experienced with theoretical knowledge since the
operation requires sophisticated techniques.
Perform brazing while flowing dry nitrogen gas (N2) to
prevent oxide film from forming during brazing
application to the inside of the pipe.

• Never use gas other than nitrogen gas.

Brazing method to prevent oxidation

1) Attach a reducing valve and a flow meter to the
nitrogen cylinder.

2) Use a copper pipe to direct the piping material,
and attach the flow meter to the balance.

3) Apply a mark to the clearance between the
piping material and the copper pipe filled with
nitrogen to prevent the back flow of the
nitrogen gas.

4) If the nitrogen gas flows out, be sure to keep
open the piping end.

13

5) Use the reducing valve to adjust the nitrogen

M

Flow meter

Stop valve

From nitrogen cylinder

Nitrogen gas

Robber plug

Pipe

Nitrogen gas cylinder

3

gas flow speed to 0.05 m

2

(0.2 kgf/cm

).

/hour or 0.02 MPa

6) After the steps above, keep the nitrogen gas
flowing until the pipe cools down to a certain
extent. (Temperature where the pipe is cool
enough to be touched by hands)

7) Remove the flux completely after brazing.

Fig 2-5-1
Prevention of oxidation during brazing

14

3 Specifications

Unit name Hydro unit HWS-P805XWHM3-E, P805XWHT6-E, P805XWHT9-E

Heating capacity *1 (kW) 8.0

Cooling capacity *2 (kW) 6.0

Variable range of compressor frequency 10 - 70 Hz

Power source Single phase 50 Hz 220-230 V

Operation mode Heating Cooling

Electric characteristic *1 *2 Hydro unit Current (A) 0.44 0.44

Operating noise sound power level Hydro unit (dB (A)) 41

Coefficient of performance *1 *2 4.76 3.66

Hydro unit Outer dimension Height (mm) 925

Outdoor unit Outer dimension Height (mm) 1340

Refrigerant piping Connection method Flare connection

Refrigerant Refrigerant name R410A

Water piping Pipe diameter R1 1/4

Operating temperature range Hydro unit (°C) *5 (Cooling / Heating / Hot water) 5-32 / 5-32 / 5-32

Operating humidity range Hydro unit (%) 15-85

Wiring connection Power wiring 3 wires: including earth wire (Outdoor unit)

*1 Heating performance measurement conditions: outside air temperature 7 °C, water supply temperature 30 °C, outlet temperature 35 °C, refrigerant piping length 7.5 m (no height

difference).

*2 Cooling performance measurement conditions: outside air temperature 35 °C, water supply temper ature 12 °C, outlet temperature 7 °C, refrigerant piping length 7.5 m (no height

difference).

*3 • The remote controller should be shipped with the hydro unit.

• Use two 1.5-meter wires to connect the hydro unit with the remote controller.
*4 Check the water piping for leakage under the maximum operating pressure.
*5 Do not leave the hydro unit at 5 °C or below.

Outdoor unit HWS-P805HR-E

Power (kW) 0.06 0.06

Outdoor unit Current (A) 7.57 7.39

Total Running current (A) 8.01 7.83

Outdoor unit (dB (A)) 66

Net weight (kg) 49

Color Silky shade (Munsell 1Y8.5/0.5)

Remote controller
Outer dimension *3

Circulation pump Motor output (W) 125 (MAX)

Heat exchanger Plate-type heat exchange

Net weight (kg) 92

Color Silky shade (Munsell 1Y8.5/0.5)

Compressor Motor output (W) 2500

Fan motor Standard air capacity (m

Hydro unit Liquid Ø9.52

Outdoor unit Liquid Ø9.52

Maximum length (m) 30

Maximum chargeless length (m) 30

Maximum height difference (m) ±30

Minimum length (m) 5

Charge amount (kg) 2.7

Maximum length (m) None (Need the flow rate 13 /min or more)

Maximum height difference (m) ±7

Maximum working water pressure (kPa) *4 430

Outdoor unit (°C) (Cooling / Heating / Hot water) 10-43 / -25-25 / -25-43

Outdoor unit (%) 15-100

Connecting line 4 wires: including earth wire

Power factor (%) 59.3 59.3

Power (kW) 1.62 1.58

Power factor (%) 93 93

Width (mm) 525

Depth (mm) 355

Height (mm) 120

Width (mm) 120

Depth (mm) 16

Flow rate (L/min) 22.9 17.2

Type Non-self-suction centrifugal pump

Width (mm) 900

Depth (mm) 320

Type Twin rotary type with DC-inverter variable speed control

Model DA422A3F-26M

Motor output (W) 100 × 2

Gas Ø15.9

Gas Ø15.9

3

/min) 103.0

15

Unit name Hydro unit HWS-P1105XWHM3-E, P1105XWHT6-E, P1105XWHT9-E

Heating capacity *1 (kW) 11.2

Cooling capacity *2 (kW) 10.0

Variable range of compressor frequency 10 - 90 Hz

Power source Single phase 50 Hz 220-230 V

Operation mode Heating Cooling

Electric characteristic *1 *2 Hydro unit Current (A) 0.66 0.66

Operating noise sound power level Hydro unit (dB (A)) 43

Coefficient of performance *1 *2 4.88 3.00

Hydro unit Outer dimension Height (mm) 925

Outdoor unit Outer dimension Height (mm) 1340

Refrigerant piping Connection method Flare connection

Refrigerant Refrigerant name R410A

Water piping Pipe diameter R1 1/4

Operating temperature range Hydro unit (°C) *5 (Cooling / Heating / Hot water) 5-32 / 5-32 / 5-32

Operating humidity range Hydro unit (%) 15-85

Wiring connection Power wiring 3 wires: including earth wire (Outdoor unit)

*1 Heating performance measurement conditions: outside air temperature 7 °C, water supply temperature 30 °C, outlet temperature 35 °C, refrigerant piping length 7.5 m (no height

difference).

*2 Cooling performance measurement conditions: outside air temperature 35 °C, water supply temper ature 12 °C, outlet temperature 7 °C, refrigerant piping length 7.5 m (no height

difference).

*3 • The remote controller should be shipped with the hydro unit.

• Use two 1.5-meter wires to connect the hydro unit with the remote controller.
*4 Check the water piping for leakage under the maximum operating pressure.
*5 Do not leave the hydro unit at 5 °C or below.

Outdoor unit HWS-P1105HR-E

Power (kW) 0.09 0.09

Outdoor unit Current (A) 10.33 14.99

Total Running current (A) 10.99 15.65

Outdoor unit (dB (A)) 66

Net weight (kg) 52

Color Silky shade (Munsell 1Y8.5/0.5)

Remote controller
Outer dimension *3

Circulation pump Motor output (W) 190 (MAX)

Heat exchanger Plate-type heat exchange

Net weight (kg) 92

Color Silky shade (Munsell 1Y8.5/0.5)

Compressor Motor output (W) 2500

Fan motor Standard air capacity (m3/min) 103.0

Hydro unit Liquid Ø9.52

Outdoor unit Liquid Ø9.52

Maximum length (m) 30

Maximum chargeless length (m) 30

Maximum height difference (m) ±30

Minimum length (m) 5

Charge amount (kg) 2.7

Maximum length (m) None (Need the flow rate 18 /min or more)

Maximum height difference (m) ±7

Maximum working water pressure (kPa) *4 430

Outdoor unit (°C) (Cooling / Heating / Hot water) 10-43 / -25-25 / -25-43

Outdoor unit (%) 15-100

Connecting line 4 wires: including earth wire

Power factor (%) 59.2 59.2

Power (kW) 2.21 3.24

Power factor (%) 93 94

Width (mm) 525

Depth (mm) 355

Height (mm) 120

Width (mm) 120

Depth (mm) 16

Flow rate (L/min) 32.1 28.9

Type Non-self-suction centrifugal pump

Width (mm) 900

Depth (mm) 320

Type Twin rotary type with DC-inverter variable speed control

Model DA422A3F-26M

Motor output (W) 100 × 2

Gas Ø15.9

Gas Ø15.9

16

4 Outside drawing

4040

4-1. Hydro unit

HWS-P805XWHM3-E, P805XWHT6-E, P805XWHT9-E

HWS-P1105XWHM3-E, P1105XWHT6-E, P1105XWHT9-E

525

2-dia.12x17 long hole

371.5

355

(for dia.8-10 anchor bolt)

B leg part

92054

72.5 72.5

40

2020

960

Anchor bolt long hole pitch

380

Anchor bolt

long hole pitch

19.5

352

9

Manometer

Remote controller

A leg part

Drain nipple

Water inlet
connecting pipe 1 1/4"

40

259

2-dia.12x17 U-shape hole

(for dia.8-10 anchor bolt)

309.5

17

11619.5

Hot water outlet

connecting pipe 1 1/4"

135.5

186.5

158

37.5

Gas line dia.15.88

Liquid line dia.9.52

59.5144.5

4-2. Outdoor unit

96

39

48

54

600

70

34

75

46

170

60

380

200

17.5

128118

74

383

150

17.5 365

40

40

12

65

83

1

2

95

55

12

64

1

1340

320

55 95

94

18

80

151

400

24

7

7

2

1

1

2

55 95

18

80

135

155

613

605

900

70 581

74

581

178 178 178

518

52 550

360

655

327

60

68

534

121

534

85

Z

43.5

5-Drain hole

( 20 88 burring hole)

Air intake

Air intake

Air

discharge

Portion A

Portion B

Drain hole ( 25 burring hole)

Mounting bolt hole

( 12 17 long hole)

Details of portion A

Details of portion B

Mounting bolt hole

( 12 17 U-shape hole)

Description

Name

Refrigerant piping outlet

Hydro and outdoor

connecting line outlet

Power source intake hole

38 knockout hole

Refrigerant liquid

connection

( 9.5 flare)

Refrigerant gas

connection

( 15.9 flare)

Z arrow view

Knockout for lower part of piping

HWS-P805HR-E, P1105HR-E

18

4-3. Hot water cylinder

HWS-3001CSHM3-E(-UK)

550

5952066.6

Specification

for UK only

2040

HWS-2101CSHM3-E(-UK)

550

5951497.6

Specification

for UK only

1474

HWS-1501CSHM3-E(-UK)

550

5951114

Specification

for UK only

1090

19

5 Wiring diagram

5-1. Hydro unit

Perform the grounding from the

earth terminal in the terminal
block of the outdoor unit.

Electric shock may happen.
Don't touch the electric parts.

BLK : BLACK
BRW : BROWN
GRY : GRAY
PNK : PINK
WHI : WHITE

Power supply
220 - 230V~ 50Hz
or
380 - 400V~ 50Hz

WARNING

CAUTION

Color identification

BLU : BLUE
GRN : GREEN
ORN : ORANGE
RED : RED
YEL : YELLOW

WHI WHI

YEL

BLU

BRW

55

3

5

4

5

5251

BH 3WV

WPM

2WV

*See DIP SW13_1

WHI

RED

GRY

TB 01

3

12111

Outdoor unit

3

12

BRW

TB 03

12

33

12

Hot water cylinder

YEL

BLU

BRW

WHI

WHI

RED

WHI

RED

WHI

YEL

TB 05

5

8

9

6

5

5

5

7

Type 1

(2-wire spring return)

WHI

YEL

RED

59

5

7

8

5

3WV

Type 2

(3-wire SPST type)

Type 3

(3-wire SPDT type)

1L1

3L2

RY05

4T2

2T1

F1, F2

BLU

BRW

Fuse

F1 F2

AC250V
T30A

BLU

BLU

BRW

N

L

Power supply

220 - 230V~ 50Hz

9

9

787
6
55
4
3
2

11

3

3
2

11

WPM

YEL/GRN

*Option

(WHI)

(WHI)

CN10

CR10

RY

10

CR11

RY

11

CR12

RY
12

CR13

RY
13

CN01

F01 (5A)

Relay

p.c.board

(MCC-1431)

BRW

BLK

BLU

YEL-GRN

313

BLU

22

1

BRW BRW BRW

WHI

ORN

PNK

RED

TB 04

4

3

1

44

4

2

4

MIXV

Type 1

(3-wire SPDT type)

WHI

ORN

PNK

RED

TB 04TB 05

43

44

41

42

MIXV

Type 2

(3-wire SPST type)

5L3

1L1

3L2

RY02

4T2

6T3

2T1

BRW

BLU

F3F4F6F5F8

BLK

BLU

BRW

L1 L2

Power supply

380 - 400V 3N~ 50Hz

Remote

controller

(HWS-AMS54E)

55

4

4

CN02

3

3

(WHI)

2

2

11

YEL-GRN

F9, F10
AC250V
T3.15A

BLU BLU

RY

A1

A2

05

Thermal protector
(Single operation)

Thermal protector
(Single operation)

1L12L3

4T2

2T1

GRY

BLK

F7

F3~8
Fuse
AC250V
T30A

BLU

BLU

GRY

TB 02

L3

N

(HWS-AMS54E)

AB

TB 07

WHI

GRY

6

RED

515

BLU

4

4

CN501

ORN

(YEL)

3

3

GRN

2

2

BRW

1

66
5
4

CN500

(BLU)

3
22

1

1

313

CN603

(YEL)

1

RED

313

CN601
(RED)

WHI

1

YEL

7

7

WHI

5

5

3

RED

1

1

CN602
(WHI)

95 5

95 5

Thermal protector

(Single operation)95 5

5L3

RY04

6T3

BLU

BLU

HWS-P805XWHT9-E
HWS-P1105XWHT9-E
HWS-P1105XWHT9TR

*Option

Remote

controller

AB

A

7

B

7

2

1

2

1

WHI

GRY

3

1

2

3

1

CN41
(BLU)

CN604
(BLU)

PNK

Backup heater 1

Backup heater 2

Backup heater 3

2

ORN

BLK

BLK
2

1

2

1

CN203

(YEL)

RY601RY600RY603 RY602

5

7

5

7

WHI

RED

5

RY
06

468

RED

THOTWOTWITC

LPS

3

2

1

3

2

3

2

3

2

BLK

BLK

BLK

BLK

BLK

BLK
1
1

CN204
(BRW)

3

2

3

CN205

(RED)

2

111

1

2

2

1

1

CN206

(WHI)

P.C.board

(MCC-1511)

WHI

BLK

3

2

3

1

CN207

CN212

(BLU)

(WHI)

1

SW01

SW02

ON

12 43

SW10 SW11 SW12 SW13

ON

ON ON21ON

1234 1234 123 41234

SW06

ON

RY607RY606RY605RY604

CN605

3

1

3

1

L

BLK

YE

7

4T22T1 6T3

BLU

BRW

F3 F6

F4

BLU

BRW

380 - 400V 3N~ 50Hz

(YEL)

1
1

WHI

6

RY

01

4

WHI WHI

RY02

3L51L12L3

BLK

F5

BLK

BLU

L3

1L2L

Power supply

CN606

(BLU)

3
3

ORN

A2

RY

RY

02

A1

Thermal protector
(Single operation)

95 5

Thermal protector
(Single operation)

95 5

5L3

1L1 3L2

6T3

2T1 4T2

BLU

F3~6
Fuse
AC250V
T30A

TB 02

N

03

7

*

RY04

3

1

3

1

WHI

PNK

A1

648

RY
04

A2

1

HWS-P805XWHT6-E
HWS-P1105XWHT6-E
HWS-P805XWHT6TR
HWS-P1105XWHT6TR

*Option

TTW

4
4

AB

4
4

6

C

A

6

B

6

BRW

BRW

RED

2

1

2
22

2

34

1

CN214

(WHI)

SW14

OFF

ON

SW07

CN305

CN100

(GRN)

(WHI)

5

3

1

33

GRY

Backup heater 1

Backup heater 2

TFI

TB 06

D

6

RED

RED

3

1

2

3

1

CN213

(WHI)

CN208
(BLU)

CN209
(GRN)

CN210
(RED)

CN211
(BLK)

CN200
(RED)

CN201
(WHI)

CN202

(YEL)

CN102
(WHI)

CN101
(WHI)

F100
Fuse
T5A
250V~

3

1
1

WHI

RED

Thermal protector
(Single operation)

5L31L1 3L2

6T32T1 4T2

BLU

BRW

F3

F4

BLU

BRW

LN

Power supply

220 - 230V~ 50Hz

GRN

1

GRN

2

2

GRN

3

3

GRN

414

GRN

1

GRN

2

2

GRN

3

3

GRN

414

YEL

1

YEL

2

2

YEL

3

3

YEL

414

YEL

1

YEL

2

2

YEL

3

3

YEL

414

YEL

1

1

GRN

2

2

RED

33

1
2

BLK

11

BLK

323

BRW

1

1

BRW

2

2

RED

3

3

RED

4

4

ORN

5

5

ORN

6

6

WHI

11

WHI

33

BLK

P100

95 5

RY02

F3,F4
Fuse
AC250V
T30A

TB 02

HWS-P805XWHM3-E
HWS-P1105XWHM3-E
HWS-P805XWHM3TR
HWS-P1105XWHM3TR

1
2

2

3

3

414

PJ20

1
2

2

3

3

414

PJ20

1

Photocoupler input

2

2

p.c.board

3

3

414

PJ17

1

Photocoupler input

2

2

p.c.board

3

3

414

PJ17

RY

7

01

Backup heater 1

Relay
p.c.board
(MCC-1217)

Relay
p.c.board
(MCC-1217)

(MCC-1214)

(MCC-1214)

8

3
2

K2

1

TB1

4

K1

3
2

K2

1

TB1

3
2
1

TB1

3
2
1

TB1

2 2
11

Thermal protector
(auto)

Flow switch

75 5

ransformer

T

1. The one-dot chain line indicates
wiring at the local site, and the
dashed line indicates accessories
sold separat ely and service wires,
respectively.
, and indicates the terminal

2.
board and the numbers indicate the
terminal numbers.

indicates P.C. board.

3.

* Be sure to fix the electric

parts cover surely with screws.
(Otherwise water enters into the box
resulting in malfunction.)

4

K1

*Option p.c.board

Boiler control O/P

Alarm O/P

Compressor operation
O/P

Defrost O/P

Hot water tank thermostat I/P
Emergency stop I/P

Cooling thermostat I/P
Heating thermostat I/P

Symbol

WPM Water pump motor
3WV 3-way valve (local)
2WV 2-way valve (local)
MIXV Mixing valve (local)
BH
RY01~RY06
LPS Low pressure sensor

Parts name

Booster heater
Relay01~Relay06

Heater AC230V, 3kWBackup heater1, 2, 3

Water heat exchanger temperature sensor

TC

Water heat exchanger inlet temperature sensor

TWI

Water heat exchanger outlet temperature sensor

TWO

Backup heater outlet temperature sensor

THO

Hot water cylinder temperature sensor

TTW

Floor heating inlet temperature sensor

TFI
TB

Terminal block

1

Parts nameSymbol

HWS-P805XWHT6-E : Installed

*

HWS-P1105XWHT6-E : Installed
HWS-P805XWHT9-E : Installed
HWS-P1105XWHT9-E : Installed
HWS-P805XWHM3-E : Not installed
HWS-P1105XWHM3-E : Not installed

1

HWS-P805XWHT6TR : Installed

*

HWS-P1105XWHT6TR : Installed
HWS-P1105XWHT9TR : Installed
HWS-P805XWHM3TR : Not installed
HWS-P1105XWHM3TR : Not installed

20

5-2. Outdoor unit

HWS-P805HR-E, HWS-P1105HR-E

HWS-P805HR-E,
HWS-P1105HR-E,

63H

P

>

49C

t°

>

TL

t°

TD

t°

TO

t°

TE

t°

TS

t°

Symbol
CM
FM01
FM02
PMV
TD
TS
TE
TL
TO
20SF
SV
PD
49C
RY
L/F
63H

FM01

FM02

121

Red

2

1

1

CN400

2

2

(White)

3

3

1

1

CN300

2

2

(White)

3

3

CN609

121

(Blue)

2

1
2

CN610

3

(Yellow)

4
5
6

CN604

121

(White)

2

11

CN603

2

(White)

33

CN602

121

(Yellow)

2

CN601

121

(White)

2

11

CN600

2

(White)

33

3

4

12

CN710

(White)

12

346

PMV

Compressor
Fan motor

Pulse motor valve
Pipe temperature sensor(Discharge)
Pipe temperature sensor(Suction)
Heat exchanger sensor 1
Heat exchanger sensor 2
Outside temperature sensor
4-way valve coil
2-way valve coil
Pressure sensor
Compressor case thermostat
Relay
Line Filter
High-pressure switch

-P805HRTR

-P1105HRTR

Reactor Reactor

(Gray) (Gray)

P04 P05

(White) (White)

P07P06

P.C. board
MCC-1571

4
3

SW801

12

4
3

12

4
3

12

SW800

RY704

3

1

1
1

20SF

4

CN701

4

(White)

Earth

screw

Outdoor
unit

Hydro
unit

(White)

Earth

screw

CN04

1
1

(Gray)

12

12

3
3

(White)

1. indicates the terminal block. Alphanumeric characters
in the cycle indicate the terminal No.

2.The two-dot chain line indicates the wiring procured locally.

3. indicates the P.C. board.

4.For the hydro unit circuit, refer to the wiring diagram
of the hydro unit.

SW804

ON

SW803

ON

ON

SW802

5

6

CN704

(Blue)

Part name

(Red) (White) (Black)

U

CN200

Fuse, F01
T25 A, 250 V ~

Fuse, F03
T10 A, 250 V ~

5

7

5

(Red)

3

P01 P02

7

(Black)

(Red) (White)

Earth

screw

Power Supply

220 - 230 V ~ 50 Hz

3

CM

VW

CN202

CN201

CN703

(Gray)

CN702
(White)

CN606

(Red)

L/F

P09

LN

Fuse

T3.15 A 250 V ~

11

3

3

Fuse

T3.15 A 250 V ~

11

3

3

(White)

11

2

(Black)

3

3

4 4

(Red)

(Black)

SV

PD

2 2

Heater

11

21

5-3. Hot water cylinder unit

12

TB03 (230 V)

AB

TB06 (TTW)

Supply 220 - 230 V from hydro unit
Cable size 1.5 mm

2

(minimum)

To hydro unit

Green /
Yellow

Blue

Double pole thermal cut out

Blue

Brown

Brown

TTW sensor

Hot water cylinder heater

22

6 Key electric component rating

6-1. Hydro unit

HWS-P805XWHM3-E, T6-E, T9-E

No. Component name

1

Circulation pump

2

Backup heater 3 kW

3

Backup heater 6 kW

4

Backup heater 9 kW

Water heat exchange

5

temperature sensor
(TC sensor)

Water inlet temperature sensor

6

(TWI sensor)

Water outlet temperature sensor

7

(TWO sensor)

Heater outlet water temperature

8

sensor
(THO sensor)

Floor inlet temperature sensor

9

(TFI sensor)

10

Low pressure sensor

11

Bimetal thermostat (auto)

Bimetal thermostat (single

12

operation)

13

Flow switch

14

Output board (OP)

15

Input board (OP)

16

Remote controller (Main)

17

Remote controller (Sub)

Water 3-way valve terminal

18

19

Water 2-way valve terminal

Mixing valve terminal

20

21

Circulation pump terminal

22

Booster heater terminal

23

Fuse

Model name

Type name Rating

M3-E T6-E T9-E

OOOUPM 2K 25-60 130

O SA3-23652B

O SA3-23652B

O SA3-23652B

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OP OP OP

OP OP OP

OOO

OP OP OP

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

TCB-PCIN3E AC230 V 0.5 A, DC24 V 1 A

TCB-PCM03E Contact input

HWS-AMS54E

HWS-AMS54E

AC230 V 0.40 A (MAX)

AC230 V 3 kW

AC400 V (3N) 6 kW

AC400 V (3N) 9 kW

10 kΩ (25 °C)

10 kΩ (25 °C)

10 kΩ (25 °C)

10 kΩ (25 °C)

10 kΩ (25 °C)

Operating pressure 0.20 MPa

Operating temperature 75±3 °C DC12 V / 0.2 A

Operating temperature 95±5 °C AC250 V / 16 A

Operating flowing quantity 13 /min

AC230 V 0.1 A
2Wire, 3Wire SPST, SPDT type mountable

AC230 V 0.1 A 2Wire type mountable

AC230 V 0.1 A
3Wire SPST, SPDT type mountable

AC230 V 1.0 A

AC230 V 1.0 A

AC250 V 30 A

O ······· Applied
OP ····· Optional accessory

23

HWS-P1105XWHM3-E, T6-E, T9-E

No. Component name

1

Circulation pump

2

Backup heater 3 kW

3

Backup heater 6 kW

4

Backup heater 9 kW

Water heat exchange

5

temperature sensor
(TC sensor)

Water inlet temperature sensor

6

(TWI sensor)

Water outlet temperature sensor

7

(TWO sensor)

Heater outlet water temperature

8

sensor
(THO sensor)

Floor inlet temperature sensor

9

(TFI sensor)

10

Low pressure sensor

11

Thermal protector (auto)

Thermal protector (single

12

operation)

13

Flow switch

14

Output board (OP)

15

Input board (OP)

16

Remote controller (Main)

17

Remote controller (Sub)

Water 3-way valve terminal

18

19

Water 2-way valve terminal

Mixing valve terminal

20

21

Circulation pump terminal

22

Booster heater terminal

23

Fuse

Model name

M3-E T6-E T9-E

OOO

O

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

OP OP OP

OP OP OP

OOO

OP OP OP

OOO –

OOO –

OOO –

OOO –

OOO –

OOO –

Type name Rating

UPM GEO 25-85 130

AC230 V 0.66 A (MAX)

SA3-23652B AC230 V 3 kW

O

SA3-23652B AC400 V (3N) 6 kW

O

SA3-23652B AC400 V (3N) 9 kW

10 kΩ (25 °C)

10 kΩ (25 °C)

10 kΩ (25 °C)

10 kΩ (25 °C)

10 kΩ (25 °C)

Operating pressure 0.20 MPa

Operating temperature 75±3 °C DC42 V / 0.2 A

Operating temperature 95±5 °C AC250 V 16 A

Operating flowing quantity 18 L/min

TCB-PCIN3E AC230 V 0.5 A, DC24 V 1 A

TCB-PCM03E Contact input

HWS-AMS54E

HWS-AMS54E

AC230 V 0.1 A
2Wire, 3Wire SPST, SPDT type mountable

AC230 V 0.1 A 2Wire type mountable

AC230 V 0.1 A
3Wire SPST, SPDT type mountable

AC230 V 1.0 A

AC230 V 1.0 A

AC250 V 30 A

O ······· Applied
OP ····· Optional accessory

24

6-2. Outdoor unit

HWS-P805HR-E, P1105HR-E

No. Component name Type name Rating

1

Compressor DA422A3F-26M

2

Outdoor fan motor (x2) ICF-280-A100-1 Output 100 W

3

Reactor (x2) CH-44 1.4 mH, 25 A

4

4-way valve coil STF-H01AP1874A1 AC220 - 230 V full-wave rectifier input, alive time 10 sec or less

5

Pulse motor valve (PMV) coil UKV-A038 DC12 V

6

Compressor case thermostat US-622KXTMQO-SS OFF = 125 ± 4 °C, ON = 90 ± 5 °C

7

PC board MCC-1571 Input 1Ø, AC220 - 230 V ± 10%, 50/60 Hz

8

High pressure sensor NSK-BH042D-430 0 ~ 4.15 MPa

9

2-way valve coil VPV-MOAJ510B0 AC220 - 240 V

10

High pressure switch ACB-4UB154W OFF = 4.15 + 0, -0.15 MPa

6-3. Hot water cylinder unit

Model name

1501

2101

No. Component name

1

Hot water cylinder heater

Hot water cylinder temperature

2

sensor
(TTW sensor)

Thermal cut-out

3

CSH
M3-E
(-UK)

OOO

OOO

OOO

CSH
M3-E
(-UK)

3001

CSH
M3-E
(-UK)

Type name Rating

– AC230 V 2.7 kW

10 kΩ (25 °C)

–

–

Operating temperature
Manual reset 82 °C (+3K/-2K)

O ······· Applied

25

6-4. Water heat exchange control board

PWM signal line
connector
CN500

Transformer input connector
CN101

AC power supply connector
CN100

Serial input connector
CN305

Backup heater 2 drive connector
CN606

3WV drive connector
CN602

Transformer connector
CN102

Flow switch connector
CN200

Overheat protection thermostat
input connector
CN202

TWO sensor connector
CN205

TWI sensor connector
CN204

THO sensor connector
CN206

TTW sensor connector
CN214

Low pressure sensor connector
CN207, CN212

Remote controller

connector

CN41

TC sensor connector

CN203

TFI sensor
connector
CN213

Backup heater 1 drive
connector
CN605

Mixing valve drive
connector
CN604

Hot water cylinder

drive connector

CN601

Built-in circulation

pump connector

CN603

Relay board

connector

CN501

Option board

connector

CN208-CN211

HWS-P805XWHM3-E, P805XWHT6-E, P805XWHT9-E
HWS-P1105XWHM3-E, P1105XWHT6-E, P1105XWHT9-E

26

6-5. Outdoor control board

Fan motor output (Upper)
CN400(White)

Fan motor output (Lower)
CN300(White)

Case thermostat connector
CN609(Blue)

High-pressure switch
connector CN690 (Red)

Power circuit
protection fuse
F100(250 V, 3.15 A,
plastic case)

4-way valve connector
CN701(White)

Compressor ON output
connector
CN704(Blue)

Heater output
connector
CN703(Grey)

External input connector
CN610(Yellow)

Special operation switches
SW801
SW804

Display change-over
switches
SW800
SW803

PMV connector
CN710(White)

PD sensor
CN606(Red)

2-way valve
CN702(White)

Initialization switch
SW802

4-way valve protection fuse
F700(250 V, 3.15 A
plastic case)

Power supply protection fuses
F01
(250 V, 25 A)

Earth lead wire
P09(Black)

Connecting cable connector
CN04(White)

Connecting cable protection fuse
F03(250 V, 10 A)

Electrolytic capacitorsCompressor output terminals
CN202
CN201
CN200

Power supply connection
lead wires
P01(Red)
P02(White)

Temperature sensor

connectors

TL CN604(White)

TD CN603(White)

TO CN602(Yellow)

TE CN601(White)
TS CN600(White)

Alive, abnormal display LEDs
D800 804(Yellow)
D805(Green)

Hydro-outdoor communication

signal LEDs

D503 (Green, Outdoor =>Hydro)

D502 (Amber, Hydro => Outdoor)

HWS-P805HR-E, P1105HR-E

27

7 Refrigeration cycle / Water system diagram

7-1. Water system diagram

M

Fan coil unit

zone1

Boiler

(local)

Booster heater

(local)

By-pass valve

Safety valve

set : 3.5bar

(locally procured)

Motorized 3-way valve

M

AC230 V

(locally procured)

Radiator unit

2-way valve for

cooling mode

(locally procured)

AC230 V

Strainer

40 mesh

(locally procured)

By-pass valve

(locally procured)

(locally procured)

Drain cock for water charge

Motorized mixing valve

zone2

90 °C

10 bar

Relief valve(UK)

AC230 V

(locally procured)

Circulation pump

(locally procured)

1 : 2.7 kW
Ø

Cylinder heater

TFI

Floor

heating

Buffer tank (locally procured)

Air vent valve

set : 95 ± 5 °C

Single operation

Thermal protector

Overpressure preventive

set : 1bar

Expansion vessel

THO

valve

set : 4.3bar

max : 10 bar

Circulation pump

(auto)

set : 75 ± 3 °C

Thermal protector

Manometer

gage : 6bar

TWO

Water vent

valve

TWI

Flow sw

1 : 3 kWØ3 : 6 kWØ3 : 9 kW
Ø

Backup heater

Water heat exchanger

TC

Low pressure sensor

28

max : 10bar

Water outlet

Pressure relief

Set value : 7 bar (UK)

TTW

(manual reset)

Thermal cut-out

82 °C (+3K/-2K)

Outdoor unit

Water inlet

3.5 bar

Reducing

valve (UK)

Hot water cylinder

Local hot water system

Installation example of water circuit

(1) (2)

(3) (4)

(5) (6)

The water flowing for a system without buffer tank ((1), (2), (3), (5)) requires18 /min (P805XWH 13 /min) or more.
This water flowing requires 5 or more branches of Floor heating or Radiator etc.

Less than 5 branches may cause a flow deficiency. In this case, please provide a buffer tank and secondary pumps
as shown in (4).
Please check how to install the boiler (See page 40)

29