Toshiba Estia RUA-CP1701H User manual

FILE No. EU-SVM-17001
(3rd Revision: July 2019)
AIR TO WATER HEAT PUMP
Service Manual
Monobloc Outdoor Unit
Model name:
RUA – CP1701H*
RUA – CP2101H*
* See next page for model naming convention

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Model naming convention:
Accessories:-
Code Description Application
RBP-AMT11E Wired Remote (WUI) Additional WUI can be used by installer for service / maintenance
RBP-RTMS1MNR-E Header / Follower sensor Sensor required for Header / Follower connection (up to 4 units)
RBP-RTDH1MNR-E Domestic hot water sensor Necessary for DHW production
RBP-RTAM1MNR-E
Additional outdoor ambient
temperature sensor
Accurate reading of outdoor air temperature
RUA - CP 170 1 H ❑8❑- E
E
Blank
Z
8
Blank
FP
L
H
Blank
0-9
170
210
21.0kW
Cooling only
Series Number
1 = 1 Series
Capacity
Based on heating capacity (kW)
17.0kW
Factory option: Pump
Variable speed pump
with Expansion vessel
Fixed speed pump with
Expansion vessel
Pump less type without
Expansion vessel
Type of System
Heat pump
3 phase 380/415V
Area
Europe
Factory option: Coil Protection
No Coil Protection
Coil Protection
Power Supply

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Contents
1. SAFETY PRECAUTIONS.........................................................................................................................................5
2. REFRIGERANT (R410A)..........................................................................................................................................8
2.1. SAFETY DURING INSTALLATION &SERVICE ...........................................................................................................8
2.2. TOOLS ................................................................................................................................................................8
2.3. REPAIR AND RECHARGE OF REFRIGERANT............................................................................................................9
3. SPECIFICATION.....................................................................................................................................................11
4. CONSTRUCTION VIEWS.......................................................................................................................................13
4.1. MONOBLOC OUTDOOR UNIT ...............................................................................................................................13
4.2. REMOTE CONTROLLER.......................................................................................................................................13
4.3. ESTIA HOT WATER CYLINDER............................................................................................................................14
5. WIRING DIAGRAM.................................................................................................................................................15
5.1. MONOBLOC OUTDOOR UNIT ...............................................................................................................................15
5.1.1. Schematic ..............................................................................................................................................15
5.1.2. Customer Control Connections...........................................................................................................16
5.1.3. Wiring Diagram (Sheet 6) .....................................................................................................................17
5.1.4. Wiring Diagram (Sheet 7) .....................................................................................................................18
5.1.5. Wiring Diagram (Sheet 8) .....................................................................................................................19
5.2. GENERAL ELECTRICAL CONNECTION ..................................................................................................................20
5.3. ESTIA HOT WATER CYLINDER............................................................................................................................20
6. KEY ELECTRIC COMPONENT RATING...............................................................................................................21
6.1. MONOBLOC OUTDOOR UNIT ...............................................................................................................................21
6.2. ESTIA HOT WATER CYLINDER............................................................................................................................21
6.3. MONOBLOC OUTDOOR UNIT CONTROL ................................................................................................................22
6.3.1. MCC-1596 (compressor IPDU) .............................................................................................................22
6.3.2. MCC-1597 (fan motor IPDU) .................................................................................................................22
6.3.3. MCC-1599 (interface PCB)....................................................................................................................23
6.3.4. MCC-1600 (noise filter) .........................................................................................................................23
6.3.5. NHC (new hydronic PCB) .....................................................................................................................24
6.3.6. Standard acronyms...............................................................................................................................24
7. REFRIGERATION CYCLE / WATER SYSTEM DIAGRAMS ................................................................................25
7.1. WATER SYSTEM DIAGRAM..................................................................................................................................25
GLYCOL ANTI-FREEZE ................................................................................................................................................26
7.2. REFRIGERATION CYCLE SYSTEM DIAGRAM ..........................................................................................................27
8. OPERATIONAL DESCRIPTION ............................................................................................................................30
8.1. BASIC OPERATION ............................................................................................................................................30
8.1.1. Operation control ..................................................................................................................................30
8.1.2. Domestic hot water (DHW) operation..................................................................................................31
8.1.3. Heating operation..................................................................................................................................31
8.1.4. Cooling operation..................................................................................................................................31
8.1.5. Wired external control ..........................................................................................................................32
8.2. CONTROL MODE AND CONTROL METHOD.............................................................................................................33
8.2.1. Monobloc outdoor unit operation range for heating and cooling....................................................33
8.2.2. Domestic hot water (DHW) operation..................................................................................................34
8.2.3. Heating Operation.................................................................................................................................36
8.2.4. Cooling Operation.................................................................................................................................37
8.2.5. Simultaneous Heating and Domestic Hot Water Operation .............................................................39
8.2.6. Simultaneous Cooling and Domestic Hot Water Operation:............................................................40

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8.2.7. Boiler control.........................................................................................................................................41
8.2.8. Domestic Hot Water Priority ................................................................................................................42
8.2.9. Anti-Legionella Control.........................................................................................................................43
8.2.10. Night Mode.............................................................................................................................................44
8.2.11. Water Freeze Protection.......................................................................................................................44
8.2.12. Home Anti-freeze protection................................................................................................................45
8.2.13. Auto / climatic curve operation............................................................................................................46
8.2.14. Summer mode control..........................................................................................................................50
8.2.15.Floor Drying Mode.................................................................................................................................50
8.2.16. Water Pump logic..................................................................................................................................51
8.2.17. Flow Switch Control..............................................................................................................................57
8.3. OVERRIDE LIST.................................................................................................................................................57
8.3.1. SYSTEM MODE OVERRIDE [P047] .....................................................................................................57
8.3.2. CAPACITY OVERRIDE [P064]..............................................................................................................58
8.3.3. Water Pump override [P081] ................................................................................................................60
8.3.4. Backup Override [P091]........................................................................................................................61
8.3.5. DHW Override [P202]............................................................................................................................62
8.4. INVERTER CONTROL LOGIC................................................................................................................................63
8.4.1. Compressor short cycling protection.................................................................................................63
8.4.2. Minimum compressor run time............................................................................................................63
8.4.3. Two-way Valve Control.........................................................................................................................63
8.4.4. Coil Heating Control..............................................................................................................................64
8.4.5. Superheat Control.................................................................................................................................65
8.4.6. Defrost logic ..........................................................................................................................................66
8.4.7. Outdoor fan control...............................................................................................................................67
9. METHOD OF DEFECT ANALYSIS........................................................................................................................70
9.1. MATTERS TO BE CONFIRMED FIRST.....................................................................................................................70
9.1.1. Initial check items .................................................................................................................................70
9.1.2. Check the power supply voltage.........................................................................................................70
9.1.3. Check for any miss-wiring of the connection cables........................................................................70
9.1.4. About the installation of the temperature sensor..............................................................................70
9.2. NON-DEFECTIVE OPERATION (PROGRAM OPERATION –NO ERROR CODE).............................................................70
9.3. OUTLINE OF THE DETERMINATION DIAGRAM ........................................................................................................71
9.3.1. Procedure of defect diagnosis.............................................................................................................71
9.3.2. How to determine the Alarm on the remote controller......................................................................71
9.3.3. How to cancel a check code ................................................................................................................72
9.3.4. How to determine the defect error by inverter board LED display..................................................72
9.3.5. How to diagnose by error code ...........................................................................................................75
9.4. DIAGNOSIS FLOW CHART FOR EACH ERROR CODE...............................................................................................79
9.4.1. Monobloc outdoor unit failure detection............................................................................................79
9.4.2. Temperature sensor, temperature – resistance characteristic tables.............................................95
10. PARAMETER DETAILS.....................................................................................................................................96
10.1. PARAMETER TABLES .....................................................................................................................................96
10.1.1. Service tables........................................................................................................................................97
10.1.2. Configuration tables .............................................................................................................................98
10.1.3. Display tables ......................................................................................................................................107
10.1.4. Maintenance tables.............................................................................................................................114
10.1.5. Setpoint tables.....................................................................................................................................120
10.1.6. POC tables ...........................................................................................................................................121
11. JBUS / MODBUS DETAILS .............................................................................................................................123
11.1. JBUS /MODBUS CONTROLLER ....................................................................................................................123
11.2. JBUS /MODBUS PARAMETER LIST...............................................................................................................123
12. MAIN COMPONENTS REPLACEMENT..........................................................................................................131

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12.1. OPEN THE FRONT PANEL..............................................................................................................................131
12.2. OPEN THE RIGHT PANEL...............................................................................................................................131
12.3. DETACHMENT OF THE ROOFTOP ...................................................................................................................132
12.4. DETACHMENT OF THE BACK PANEL...............................................................................................................132
12.5. FAN REPLACEMENT.....................................................................................................................................133
12.6. FIXED SPEED PUMP REPLACEMENT .............................................................................................................134
12.7. VARIABLE SPEED PUMP REPLACEMENT .......................................................................................................134
12.8. REMOVE ELECTRICAL BOX ..........................................................................................................................135
12.9. COMPRESSOR REPLACEMENT......................................................................................................................136
12.10. REACTOR REPLACEMENT ............................................................................................................................136
12.11. ACCUMULATOR REPLACEMENT....................................................................................................................137
12.12. PADDLE FLOW SWITCH REPLACEMENT ........................................................................................................137
12.13. BPHE REPLACEMENT.................................................................................................................................138
12.14. RECEIVER REPLACEMENT............................................................................................................................139
12.15. PMV COIL REPLACEMENT...........................................................................................................................139
12.16. 4-WAY VALVE /2-WAY VALVE COIL REPLACEMENT.....................................................................................140
12.17. PMV /4-WAY VALVE /2-WAY VALVE BODY REPLACEMENT .........................................................................140
12.18. RELIEF VALVE REPLACEMENT .....................................................................................................................140
12.19. HP SWITCH REPLACEMENT .........................................................................................................................141
12.20. EXPANSION TANK REPLACEMENT ................................................................................................................141
12.21. WATER RELIEF VALVE REPLACEMENT .........................................................................................................141
13. REPLACEMENT OF THE SERVICE PC BOARD ...........................................................................................142
13.1. INVERTER BOX REPLACEMENT.....................................................................................................................142
13.2. NHC BOARD REPLACEMENT .......................................................................................................................143
14. DOWNLOADING NEW SOFTWARE VERSION..............................................................................................144
15. PERIODIC INSPECTION ITEMS......................................................................................................................147
15.1. REFRIGERANT CHARGE................................................................................................................................147
15.1.1. Refrigerant leak testing ......................................................................................................................147
15.1.2. Refrigerant charging...........................................................................................................................147
15.2. CLEANING THE COIL.....................................................................................................................................148
15.2.1. Overview ..............................................................................................................................................148
15.2.2. Precautions and recommendations..................................................................................................148
15.2.3. Procedure.............................................................................................................................................149
15.3. LEAKAGE CONTROL.....................................................................................................................................149
15.4. HYDRONIC CYCLE........................................................................................................................................149
15.4.1. Purge ....................................................................................................................................................149
15.4.2. Water filter cleaning / replacement....................................................................................................149
15.4.3. Pump ....................................................................................................................................................150
15.5. HIGH PRESSURE SWITCH TEST .....................................................................................................................151
15.6. OTHER CHECKS ON UNIT..............................................................................................................................152
15.6.1. Tightening torques for the main electrical components.................................................................152
15.6.2. Tightening torques for the main bolts and screws..........................................................................152
15.6.3. Visual inspections...............................................................................................................................152
15.6.4. Drain the water ....................................................................................................................................152
16. OUTDOOR UNIT EXPLODED VIEW & PARTS LIST......................................................................................153
16.1. 17KWFIXED SPEED /VARIABLE SPEED /PUMPLESS....................................................................................153
16.2. 21KWFIXED SPEED /VARIABLE SPEED /PUMPLESS....................................................................................156

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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
Indicates that a wrong operation may cause a service engineer and the third persons around to
get fatal or serious injuries.
⚠WARNING
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.
⚠CAUTION
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.
* Property damage indicates extended damage to property, furniture, livestock, or pets.
[About symbols]
Symbol
Meaning of symbol
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
<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 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.

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⚠WARNING
<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.
<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 refrigerants excessively raises the pressure in the refrigerant cycle, that could lead
leading to injury due to burst failures.
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 a refrigerant recovery to ensure 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 failure.
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.
<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 an accident at a customer site due to electrical leakage or an electric shock.
<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. Although refrigerant gas alone is harmless, if it catches fire 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.

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⚠WARNING
<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.

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2. Refrigerant (R410A)
This Air to Water Heat Pump adopts a new 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 the following instructions carefully to ensure the correct tools and personnel are used for all tasks involving the
use of R410A refrigerant.
2.1. Safety during installation & 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 failure.
•Check the refrigerant name to use the tools and personnel appropriate for the refrigerant.
•A product using the refrigerant R410A has the refrigerant name prominently displayed on its outdoor unit.
•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 possible injury due to burst failure.
•Check that no refrigerant gas leaks after the service / repair work is completed.
•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 an accident could be caused due to oxygen
deficient
•When installing the unit or re-installing it after relocation, follow the installation guide to ensure correct
operation.
•A defective installation may cause a refrigerant cycle defect, 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.
2.2. Tools
The following tools must be on equipment using R410A refrigerant:
No. Tool to be used Usage
R410A Air to Water Hear Pump
installation
Conventional refrigerant
Air to Water Heat Pump
installation
For R410A
Existence of new
equipment
Conventional
equipment can be
used
New equipment can be
used with conventional
refrigerant
1
Gauge manifold
Evacuating, refrigerant
charge, run check, etc. YES NO NO
2 Charge hose
3
Vacuum pump adapter
Vacuum evacuating
YES
NO
YES
4
Electrical balance for
refrigerant charging
Refrigerant charge YES NO YES
5
Refrigerant cylinder
Refrigerant charge
YES
NO
NO
6
Leakage detector
Gas leakage check
YES
NO
YES
General tools
In addition to the above dedicated tools, the following tools are required as general equipment:
1. Vacuum pump: Use this by attaching vacuum pump adapter.
2. Torque wrench
3. Pipe cutter
4. Reamer
5. Pipe bender
6. Spirit level
7. Screwdriver (+, –)
8. Spanner or Monkey wrench
9. Hole core drill
10. Hexagon wrenches
11. Tape measure
12. Metal saw

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The following equipment is also required when completing service diagnostic investigations or during the
commissioning of the system:
i) Clamp meter
ii) Thermometer
iii) Insulation resistance tester
iv) Oscilloscope
2.3. Repair and recharge of refrigerant
It is compulsory to wear personal protective equipment (PPE).
It is recommended to wear ear defenders, when working near the unit and the unit is in operation.
The insulation must be removed and warming up must be limited by using a wet cloth. Before opening the unit, always
ensure that the circuit has been purged.
All installation parts must be maintained by the personnel in charge, in order to avoid material deterioration and
injuries to people. Faults and leaks must be repaired immediately. The authorized technician must have the
responsibility to repair the fault immediately. Each time repairs have been carried out to the unit, the operation of the
protection devices must be re- checked.
Repairs must comply with the regulations and recommendations of unit and HVAC installation current country safety
standards.
If a leak occurs or if the refrigerant becomes contaminated (e.g. by a short circuit in a motor) remove the complete
charge using a recovery unit and store the refrigerant in mobile containers.
Do NOT un-weld or flame cut refrigerant lines or any refrigerant circuit component until all refrigerant (liquid and
vapour) has been removed from unit. Traces of vapours should be displaced with dry air nitrogen. Refrigerant in
contact with an open flame produces toxic gases.
The necessary protection equipment and appropriate fire extinguishers for the system must be available. Refrigerant
type used must be within easy reach.
Repair the leak detected and charge the circuit with the total R-410a charge, as indicated on the unit name plate.
Charging any refrigerant other than the original charge type (R-410a) will impair machine operation and can even lead
to a destruction of the compressor. The compressor operating with this refrigerant type are lubricated with synthetic
Polyolester oil (POE).
During refrigerant removal and storage operations follow applicable regulation. These regulations, that permit
conditioning and recovery of halogenated hydrocarbons under optimum quality conditions for the products and
optimum safety conditions for people, property and the environment, are described in the current country standard.
RISK OF EXPLOSION: Never use air or a gas containing oxygen during leak tests to purge
lines or to pressurize a machine. Pressurized air mixtures or gases containing oxygen can be
the cause of an explosion. Oxygen reacts violently with oil and grease.
Do not attempt to remove refrigerant circuit components or fittings, while the machine is under pressure or while it is
running. Be sure pressure is at 0 kPa (Gauge) before removing components or opening a circuit.
Never exceed the specified maximum operating pressures. Verify the allowable maximum high- and low-side test
pressures by checking the instructions in this manual and the pressures given on the unit name plate.
Only use dry nitrogen for leak tests, possibly with an appropriate tracer gas.
Do not siphon refrigerant.
Avoid contact with liquid refrigerant on the skin or splashing it into the eyes. Use safety goggles and gloves. Wash
any spills from the skin with soap and water. If liquid refrigerant enters the eyes, immediately and abundantly flush the
eyes with water and consult a doctor.
Never apply an open flame or live steam to a refrigerant container. Dangerous overpressure can result. If it is
necessary to heat refrigerant, use only warm water.

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Do not re-use disposable (non-returnable) cylinders or attempt to refill them. It is dangerous and illegal. When
cylinders are empty, evacuate the remaining gas pressure, and move the cylinders to a place designated for their
recovery. Do not incinerate.
If the refrigerant circuit is open to carry out a repair, all circuit openings must be plugged, if the repair takes longer
than 30 minutes. This prevents humidity from contaminating the circuit, especially the oil. If the work is expected to
take longer, charge the circuit with nitrogen.
Do not attempt to repair or recondition any safety devices when corrosion or build-up of foreign material (rust, dirt,
scale, etc.) is found within the valve body or mechanism. If necessary, replace the device. Do not install safety valves
in series or backwards.

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3. Specification
Physical data
Parameter
RUA-CP1701H
RUA-CP2101H
Dimensions [HxWxD] ~ mm
1580x1142x584
1580x1142x584
Weight (1) ~ kg [Pumpless / Variable speed / Fixed speed]
191.6 / 206.1 / 209.9
200.1 / 214.6 / 218.4
Sound power level (2) ~ dB(A)
71
74
Sound pressure level @ 10m (3) ~ dB(A)
40
43
Compressor type
DC twin rotary
DC twin rotary
Refrigerant
R410A
R410A
Refrigerant charge (1) ~ kg
8.0
8.0
CDU fan ~ maximum total air flow ~ m3/hr
7200
8640
CDU fan – maximum rotational speed ~ rpm
840
960
Water heat exchanger
Brazed plate heat exchanger
Water volume ~ l
1.52
1.90
Maximum water side operating pressure (Pumpless) ~ kPa
1000
1000
Hydronic options
Fixed speed (HFP)
Variable speed (H)
Pumpless (HL)
Expansion tank volume ~ l (Not supplied with Pumpless models)
8
8
Available static pressure with variable speed pump (100%) ~ kPa
30 - 105
40 - 105
Available static pressure with fixed speed pump ~ kPa
60 – 190
60 - 190
Maximum water side operating pressure (with pump) ~ kPa
300
300
Water connections with fixed or variable speed pump (inlet – outlet) ~
inch
1¼ - 1 BSP 1¼ - 1 BSP
Water connections Pumpless (inlet – outlet) ~ inch
1 – 1 BSP
1 – 1 BSP
Refrigerant service ports (LP & HP) ~ inch
½ UNF
½ UNF
Chassis colour
Light Grey (RAL 7035)
Performance data
Full Load Performance*
RUA-CP1701H
RUA-CP2101H
Nominal heating capacity (EWT 30°C / LWT 35°C & OAT 7°C) ~
kW
H1 17.1 21.1
COP ~ W/W
H1
4.1
4.1
Nominal heating capacity (EWT 40°C / LWT 45°C & OAT 7°C) ~
kW
H2 16.2 20.0
COP ~ W/W
H2
3.4
3.3
Nominal heating capacity (EWT 50°C / LWT 55°C & OAT 7°C) ~
kW
H3 15.3 19.1
COP ~ W/W
H3
2.7
2.7
Heating Leaving water temperature range (min ~ max) °C
20 ~ 60
20 ~ 57
Nominal cooling capacity (EWT 12°C / LWT 7°C & OAT 35°C) ~
kW
C1 14.9 18.6
EER ~ W/W
C1
3.0
3.1
Nominal cooling capacity (EWT 23°C / LWT 18°C & OAT 35°C) ~
kW
C2 19.8 25.8
EER ~ W/W
C2
3.9
3.8
Cooling Leaving water temperature range (min ~ max) °C
5 ~ 18
5 ~ 18

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Full Load Performance*
RUA-CP1701H
RUA-CP2101H
Nominal heating capacity (EWT 30°C / LWT 35°C & OAT 7°C) ~
kW
H1 17.1 21.1
COP ~ W/W
H1
4.1
4.1
Eurovent class heating
H1
A
A
Nominal heating capacity (EWT 40°C / LWT 45°C & OAT 7°C) ~
kW
H2 16.2 20.0
COP ~ W/W
H2
3.4
3.3
Eurovent class heating
H2
A
A
Nominal heating capacity (EWT 50°C / LWT 55°C & OAT 7°C) ~
kW
H3 15.3 19.1
COP ~ W/W
H3
2.7
2.7
Heating Leaving water temperature range (min ~ max) °C
20 ~ 60
20 ~ 57
Nominal cooling capacity (EWT 12°C / LWT 7°C & OAT 35°C) ~
kW
C1 14.9 18.6
EER ~ W/W
C1
3.0
3.1
Eurovent class cooling
C1
B
A
Nominal cooling capacity (EWT 23°C / LWT 18°C & OAT 35°C) ~
kW
C2 19.8 25.8
EER ~ W/W
C2
3.9
3.8
Eurovent class cooling
C2
A
A
Cooling Leaving water temperature range (min ~ max) °C
5 ~ 18
5 ~ 18
Notes:
* = in accordance with EN14511-3:2013
C1 = cooling mode conditions: evaporator water entering/leaving temperature 12°C/7°C, outside air temperature 35°C
C2= cooling mode conditions: evaporator water entering/leaving temperature 23°C/18°C, outside air temperature 35°C
H1= heating mode conditions: water heat exchanger entering/leaving temperature 30°C/35°C. Outside air temperature
7°CDB/6°CWB
H2= heating mode conditions: water heat exchanger entering/leaving temperature 40°C/45°C. Outside air temperature
7°CDB/6°CWB
H3= heating mode conditions: water heat exchanger entering/leaving temperature 47°C/55°C. Outside air temperature
7°CDB/6°CWB
(1) Values are guidelines only. Refer to unit nameplate
(2) In dB ref=10-12W, (A) weighting. Declared dual number noise emission values in accordance with ISO 4871
(3) In dB ref 20μPa, (A) weighting. Declared dual number noise emission values in accordance with
ISO 4871
(4) Minimum water-side operating pressure with fixed speed pump is 50kPa and with variable speed pump is 40kPa
Electrical data
RUA-CP****H* – Full Options
RUA-CP1701H
RUA-CP2101H
Power circuit
Nominal power supply ~ V/ph/Hz
400 / 3+N / 50
Voltage range ~ V
360 - 440
Control circuit supply
24V AC internal transformer
Nominal current at nominal voltage (Un)1~ (A)
12.5
14.3
Maximum power input at nominal voltage (Un)2~ kW
10.8
12.4
Power factor at maximum power2~ Φ
0.93
Maximum current at nominal voltage – 10% (Un-10%)3~ A
18.5
21.2
Maximum unit current (Un)4~ A
16.7
19.1
Maximum start up current – standard unit5 ~ A
Not applicable
(less than the operating current)
Note:
1 = Conditions equivalent to the standardised Eurovent conditions (evaporator water entering-leaving temperature = 12 °C/7 °C,
outside air temperature = 35 °C)
2 = Power input, compressors and fans, at the unit operating limits (saturated suction temperature 15 °C, saturated condensing
temperature 68.3 °C) and nominal voltage of 400 V (data given on the unit nameplate)
3 = Maximum unit operating current at maximum unit power input and at 360 V
4 = Maximum unit operating current at maximum unit power input and at 400 V (values given on the unit nameplate)
5 = Maximum instantaneous start-up current at operating limits (maximum operating current of the smallest compressor(s) + fan
current + locked rotor current of the largest compressor).

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4. Construction views
4.1. Monobloc outdoor unit
4.2. Remote controller
①
Water inlet
②
Water outlet
③
Safety valve outlet
④
Electrical connections

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4.3. ESTIA hot water cylinder

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5. Wiring Diagram
5.1. Monobloc outdoor unit
5.1.1. Schematic
A001
VARIABLE SPEED DRIVE
RT1
LEAVING WATER TEMPERATURE SENSOR
A002
MAIN CONTROL CARD
RT2
ENTERING WATER TEMPERATURE SENSOR
A2
REMOTE CONTROLLER (WUI)
SP1F
HIGH PRESSURE SWITCH
BP1
LOW PRESSURE SENSOR
SP90F
EVAPORATOR PUMP FLOW SWITCH
CM
COMPRESSOR
TC
TRANSFORMER
EH1
HEATER PLATE EXCHANGERS
TD
DISCHARGE TEMPERATURE SENSOR
EH90
HEATER HYDRAULIC PUMP
TE
HEAT EXCHANGER SENSOR 1
EP90
HYDRAULIC PUMP
TL
HEAT EXCHANGER SENSOR 2
FM1
FAN MOTOR
TO
OUTSIDE TEMPERATURE SENSOR
FM2
FAN MOTOR
TR
REFRIGERANT SENSOR
FR90
HYDRAULIC PUMP THERMAL RELAY
TS
SUCTION TEMPERATURE SENSOR
FT1
COMPRESSOR CASE THERMOSTAT
YV21
2 WAY VALVE COIL
PMV1
PULSE MOTOR VALVE
YV41
4 WAY VALVE COIL
PMV 2
PULSE MOTOR VALVE
Y
3 WAY VALVE DOMESTIC HOT WATER
QS100
DISCONNECTING SWITCH

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5.1.2. Customer Control Connections
TERMINAL CUSTOMERS
1
CCN+
1
WUI+
2
CCN GROUND
3
CCN-
3
WUI-
6
ON / OFF SWITCH (REMOTE)
7
MODE HEAT / COOL (REMOTE)
6
NORMAL / ECO (REMOTE)
7
SAFETY INPUT SWITCH
8
FLOW SWITCH
9
CUSTOMIZE DISCRETE INPUT #5
10
CUSTOMIZE DISCRETE INPUT #6
11
CUSTOMIZE DISCRETE INPUT #7
12
CUSTOMIZE DISCRETE INPUT #8
13
GROUND
14
DHW TANK TEMPERATURE (TTW)
15
CHILLER WATER SYSTEM TEMPERATURE
16
INDOOR AIR TEMPERATURE
17
OUTDOOR AIR TEMPERATURE
18
GROUND
19
DOMESTIC HOT WATER 3 WAY VALVE
20
EHS1 / BOILER
21
CUSTOMIZED OUTPUT #8
22
CUSTOMIZED OUTPUT #9
23
NEUTRAL
24
REMOTE CONTROLLER (WUI) 12V
25
REMOTE CONTROLLER (WUI) GROUND
26
VARIABLE WATER FLOW CONTROL
27
GROUND
28
UNUSED
29
ADDITIONAL PUMP
30
WATER PUMP
31
NEUTRAL
32
NEUTRAL
33
GROUND
34
JBUS+
35
JBUS GROUND
36
JBUS-

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5.1.3. Wiring Diagram (Sheet 6)

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5.1.4. Wiring Diagram (Sheet 7)

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5.1.5. Wiring Diagram (Sheet 8)