CLIVET MULTISplit HYDRO-M 80M User manual

HYDROM 80M
TECHNICAL MANUAL
MULTISplit
TM21N041GB-00 01/2022
R32

Table of Contents Page
1. General Information ..................................................................................... 4
1. System Schematic
2. Unit Parts
3. Model Reference
4. External Appearance
5. Indoor unit combination
6. Nomenclature
2. Engineering Data .......................................................................................... 22
1. General Specifications
2. Dimensional Drawings
3. Part Names
4 Schematic Diagram
5. Electrical Wiring Diagrams
6. Indoor Printed Circuit Board Diagram
7. Electrical Characteristics
3. Product Features ........................................................................................... 24
1. Operation Modes and Functions
2. Wired Controller Functions
3. SMART KIT Configuration Guidelines
4. Installation .................................................................................................... 59
1. Installation Overview
2. Location Selection
3. Indoor Unit Installation
4. Outdoor Unit Installation

Table of Contents Page
5. Refrigerant Pipe Installation
6. Vacuum Drying and Leakage Checking
7. Water Pipework
8. Additional Refrigerant Charge
9. Engineering of Insulation
10. Engineering of Electrical Wiring
11. Selection of Water Tank
12. Test Operation
13. Error Code

Contents
1. System Schematic ..................................................................................................5
2. Unit Parts..............................................................................................................16
3. Model Reference..................................................................................................18
4. External Appearance ...........................................................................................18
5. Indoor unit combination .....................................................................................19
6. Nomenclature.......................................................................................................20
General Information

General
Information
Page 5 
1. System Schematic
With innovation technology, Midea combine Air to Air and Air to Water in the same multi system, providing an all-in-one
solution for demands of space cooling, space heating and domestic hot water.
1.1 Scenario 1:Use of multi-split air conditioners
Indoor unit: cooling (dehumidifying), heating, fresh air, hydraulic module: domestic hot water, space heating
There is a mode conflict among cooling (dehumidifying), heating and the space heating. The domestic hot water mode
doesn’t have conflicts with other modes, they can be switched on simultaneously but cannot be operated simultaneously.
Domestic hot water mode is preferred by default (and can be canceled by operating the wired controller). After the hot
water reaches the set temperature, other modes can be operated, and it can also be avoided by hot water timing. If
the hot water mode is not preferred, it will be operated intermittently with other modes until one mode reaches the set
temperature or the unit is shut down.
1
2
9
11
30 30
30
Reserved functions: Simultaneous operation of hydraulic module and heating can be set with the wired controller, but
the user shall be reminded of it in the instructions. This setting may lead to poorer heating effect of indoor unit of the air
conditioner or poorer space heating effect or longer duration or higher power consumption for the domestic hot water
to reach the set temperature. If the domestic hot water cannot reach the set temperature for a long time, the hydraulic
module and the EA heater of the water tank will be started to ensure the domestic hot water temperature;
1 Outdoor unit
2 Hydraulic module
9 Floor heating
11 Domestic hot water storage
tank
30 Indoor unit of air conditioner

General
Information
Page 6 
1.2 Scenario 2:Only used for space heating
The outlet water temperature of the hydraulic module is set by using the user controller, and the outlet water
temperature is set in accordance with different loads (floor heating or heating radiator) or room temperature. When the
outlet water temperature reaches the set temperature, the hot water generator will shut down. External circulating water
pumps may be connected to the pipelines to increase the pumping head, and water pump interfaces are reserved on the
main board.
1
2
34
5
6
8
7
7
9
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 User controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field supplied)
9 Floor heating

General
Information
Page 7 
1.3 Scenario 3: Space heating and domestic hot water
The domestic hot water is supplied by the domestic hot water storage tank connected to the hot water generator,
the hot water tank is connected by electric 3-way valve and feedwater line, the main control feed tank has reserved
temperature sensor and immersion electric heater interfaces (achieving disinfection and EA heating functions), there is no
water tank by default in the system, and they needs to be started by dialing on the main board.
1
2
34
5
6
8
7
7
9
10
11
12
13
14
15
16
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 User controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field supplied)
9 Floor heating
10 Electric 3-way valve (field supplied)
11 Domestic hot water storage tank
12 Heating coil
13 Immersion electric heater
14 Temperature detection tube (for water temperature
sensor)
15 Magnesium anode (for electrochemical corrosion)
16 Drain outlet

General
Information
Page 8 
1.4 Scenario 4: Space heating, space cooling (reserved) and domestic hot water
A floor heating loop and a fan coil unit are used for space heating, and a fan coil unit is used for space cooling.
The domestic hot water is supplied by the water tank connected to the hydraulic module. The start and stop of air
conditioning and heating and domestic hot water are controlled by the outlet water temperature of the hydraulic
module and the water tank temperature respectively. In space cooling mode, close the 2-way valve to prevent the cold
water from entering the floor heating loop.
1
2
34
5
6
8
7
7
9
10
11
12
13
14
15
16
17
18
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 wired controller
7 Shut-off valve (field supplied)
8 External circulating water pump
(field supplied)
9 Floor heating
10 Electric 3-way valve (field supplied)
11 Domestic hot water storage tank
12 Heating coil
13 Immersion electric heater
14 Temperature detection tube (for water temperature
sensor)
15 Magnesium anode (for electrochemical corrosion)
16 Drain outlet
17 Electric 2-way valve
18 Fan coil

General
Information
Page 9 
1.5 Scenario 5: Space heating and domestic hot water + return water function
A return water function is provided for the domestic hot water. The start and stop of the return water pump are
controlled by the return water temperature, so there is no waiting for the use of hot water. The main board has return
water pump and return water temperature sensor interfaces, which are started by dialing on the main board (the return
water pump and the mixing water pump share an interface, the mixing water pump is defaulted in the system).
1
2
34
5
6
8
7
7
9
10
11
12
13
14
15
16
19
20
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 wired controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field supplied)
9 Floor heating
10 Electric 3-way valve (field supplied)
11 Domestic hot water storage tank
12 Heating coil
13 Immersion electric heater
14 Temperature detection tube (for water temperature
sensor)
15 Magnesium anode (for electrochemical corrosion)
16 Drain outlet
19 Return water pump
20 Return water temperature sensor

General
Information
Page 10 
1.6 Scenario 6: Only used for space heating (suitable for multiple terminals, water
temperature adjustment)
During heating, the user can connect multiple terminals simultaneously, e.g. floor heating system and heating radiators
(or fan coils). However, as the water temperature required for the heating radiator is higher than that required for the
floor heating, a mixing water valve and a mixing water pump are provided for the floor heating to adjust the water
temperature of the floor heating. For example, if the set outlet water temperature of the hydraulic module is 55°, the
floor heating temperature can be controlled at 35° by the mixing water valve to prevent damages to the floor due to
high temperature. The mixing water valve is controlled by itself. The main board has a reserved mixing water pump
interface (the return water pump and the mixing water pump share an interface, the mixing water pump defaulted in
the system, and the mixing water pump can also be connected to the 2-way valve interface when the return water pump
and the mixing water pump are needed simultaneously).
1
2
34
5
6
21
7
7
9
8
23
22
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 User controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field supplied)
9 Floor heating
21 Mixing water pump
22 Mixing water valve
23 Heating radiator

General
Information
Page 11 
1.7 Scenario 7: Space heating (with auxiliary heating source) and domestic hot water
1. EA heater for pipeline: A pipeline electric heater is installed on the space heating mains, with its start and stop
controlled by the main temperature senor, and the main board has reserved auxiliary heating source and heating water
main temperature sensor interfaces.
1
2
34
5
6
8
7
7
9
10
11
12
13
14
15
16
17
18
24
25
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 wired controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field
supplied)
9 Floor heating
10 Electric 3-way valve (field supplied)
11 Domestic hot water storage tank
12 Heating coil
13 Immersion electric heater
14 Temperature detection tube (for water temperature
sensor)
15 Magnesium anode (for electrochemical corrosion)
16 Drain outlet
17 Electric 2-way valve
18 Fan coil
24 Heating water main temperature sensor
25 EA heater for pipeline

General
Information
Page 12 
1.8 Scenario 8: Space heating (with auxiliary heating source) and domestic hot water
2. Other auxiliary heating sources: An auxiliary heating source is installed on the space heating mains, with its start and
stop controlled by the main temperature senor, and the main board has reserved auxiliary heating source and heating
water main temperature sensor interfaces.
1
2
34
5
6
8
7
7
9
10
11
12
13
14
15
16
17
18
24
26
27
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 wired controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field
supplied)
9 Floor heating
10 Electric 3-way valve (field supplied)
11 Domestic hot water storage tank
12 Heating coil
13 Immersion electric heater
14 Temperature detection tube (for water temperature
sensor)
15 Magnesium anode (for electrochemical corrosion)
16 Drain outlet
17 Electric 2-way valve
18 Fan coil
24 Heating water main temperature sensor
26 auxiliary heating source
27 One-way valve

General
Information
Page 13 
1.9 Scenario 9: External signal interface
The hydraulic module has a reserved external on/off signal interface. When it is on, the hydraulic module will operate
according to the wired controller setting; when it is off, the hydraulic module will shut down.
1
2
34
5
6
8
7
7
9
28
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 wired controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field supplied)
9 Floor heating
28 External signal interface

General
Information
Page 14 
1.10 Scenario 10: Schematic Diagram 1 of multi-split air conditioning system
1
2
11
30 30
30
9
28
19
20
23
22
8
24
25
31
6
5
17 21
7
7
34
10
12
13
14
15
16
32 33
34 29
9
9
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 wired controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field supplied)
9 Floor heating
10 Electric 3-way valve (field supplied)
11 Domestic hot water storage tank
12 Heating coil
13 Immersion electric heater
14 Temperature detection tube (for water
temperature sensor)
15 Magnesium anode (for electrochemical
corrosion)
16 Drain outlet
17 Electric 2-way valve
19 Return water pump
20 Return water temperature sensor
21 Mixing water pump
22 Mixing water valve
23 Heating radiator
24 Heating water main temperature sensor
25 EA heater for pipeline
28 Sub-catchment
29 Electric actuator
30 Indoor unit of air conditioner
31 External signal interface
32 Filter
33 Differential pressure make-up valve
34 Differential pressure bypass valve

General
Information
Page 15 
1.11 Scenario 10:Schematic diagram 2 of multi-split air conditioning system
1
2
11
30 30
30
19
20
23
22
8
24
31
6
5
17
7
7
34
10
12
13
14
15
1
6
32 33
27
26
9
9
9
34 29
28
21
1 Outdoor unit
2 Hydraulic module
3 Heat exchanger
4 Electric heating tank
5 Built-in circulating water pump
6 wired controller
7 Shut-off valve (field supplied)
8 External circulating water pump (field supplied)
9 Floor heating
10 Electric 3-way valve (field supplied)
11 Domestic hot water storage tank
12 Heating coil
13 Immersion electric heater
14 Temperature detection tube (for water temperature
sensor)
15 Magnesium anode (for electrochemical corrosion)
16 Drain outlet
17 Electric 2-way valve
19 Return water pump
20 Return water temperature sensor
21 Mixing water pump
22 Mixing water valve
23 Heating radiator
24 Heating water main temperature sensor
26 auxiliary heating source
27 One-way valve
28 Sub-catchment
29 Electric actuator
30 Indoor unit of air conditioner
31 External signal interface
32 Filter
33 Differential pressure make-up valve
34 Differential pressure bypass valve

General
Information
Page 16 
2. Unit Parts
NOTE: The installation must be performed in accordance with the requirement of local and national standards. The
installation may be slightly diferent in diferent areas. The application examples given below are for illustration purposes
only.
2.1 Auxiliary heat source
14 11
1
2
3
4
5
66
6
7
16
19
17
18
12
15 13
22
23
24
25
26
20
21
9
10
M
M
2.2 Pipeline auxiliary electric heating
16 17
11
19
20
21
4
13
9
3
12
22
23
24
25
26
8
10
15
14
1
2
5
66
6
M
M

General
Information
Page 17 
1. Outdoor unit
2. Hydraulic module
3. Domestic hot water storage tank
4. Radiator
5. Water separator
6. Floor heating
7. Auxiliary heat source
If the unit selection is too small, additional heat is
provided.
8. Pipeline auxiliary electric heating
If the unit selection is too small, additional heat is
provided.
9. External circulating water pump
When the water resistance is greater than the head
provided by the internal machine, the pump shall be added
to the branch with excessive water resistance.
10. Backwater pump
Control the pump switch through the back-water
temperature-sensing package to keep hot water at any
time.
11. Mixing water pump
With the water mixing valve, lower the temperature of
the foor heating, and do not install it when there is no
radiator.
12. Return water temperature sensing bag
Control the operation of return water pump and keep hot
water available at any time.
13. Heating water supply main pipe temperature sensing
package
Work with external heat source 7 or 8.
14. Globe valve
Close water fow for maintenance.
NOTE: In addition to the outdoor unit and hydraulic module, other materials are prepared by users.
22-26 is an indispensable part of domestic hot water tank.
15. Electric three-way valve
Used for switching between heating and domestic hot
water mode, working with domestic hot water tank.
16. Filter
Water supply system,flter impurities.
17. Differential pressure make-up valve
Adjust the system water pressure to ensure that it is in the
normal working range.
18. Check valve
To prevent the internal machine water supply from fowing
back into the external heat source 7, this valve is not
needed for electric pipeline heating.
19. Electric two-way valve
It is used when there is cooling mode.
20. Mixing valve
Used with mixed water pump.
21. Differential pressure bypass valve
In the case of multiple branch water closure, bypass water
fow to ensure suffcient water fow to prevent water fow
failure.
22. Anode magnesium rod
Improve corrosion resistance, need to be replaced regularly.
23. Electric immersion heater
Used for auxiliary heating and sterilization.
24. Heating coil
Heat the water in the water tank to isolate the heating
water.
25. Temperature probe tube
Place a water tank temperature sensing package to control
the temperature of domestic hot water.
26. Sewage outlet
used for water tank cleaning.

General
Information
Page 18 
3. Model Reference
Refer to the following table to determine the specific indoor unit model number of your purchased equipment.
Indoor Unit Model Capacity (Btu/h) Power Supply
IHM1-Y 80M 36k~42K 1Φ, 220-240V~, 50Hz
Outdoor Unit Model Capacity (Btu/h) Power Supply
MU2-Y 105M 36k 1Φ, 220-240V~, 50Hz
4. External Appearance
IHM1-Y 80M
Outdoor Unit

General
Information
Page 19 
5. Indoor unit combination
One unit Two unit Three unit Four unit
7 7+ATW 7+7+ATW 9+12+ATW 7+7+7+ATW 7+9+12+ATW 9+12+12+ATW
9 9+ATW 7+9+ATW 9+18+ATW 7+7+9+ATW 7+9+18+ATW 9+12+18+ATW
12 12+ATW 7+12+ATW 12+12+ATW 7+7+12+ATW 9+9+9+ATW 12+12+12+ATW
18 18+ATW 7+18+ATW 12+18+ATW 7+7+18+ATW 9+9+12+ATW 12+12+18+ATW
ATW 9+9+ATW 18+18+ATW 7+9+9+ATW 9+9+18+ATW
Note: ATW can only be connected with an A system.
QUESTE PAGINE DA 19 A 21 SONO DA TOGLIERE?

General
Information
Page 20 
6. Nomenclature
Indoor unit: