AUX ACHP-H04/4R3HA Operating manual

R32 Split - Air to Water Heat Pump 20220105
1
Technical & Service Manual
R32 Split
Air to Water Heat Pump
ACHP-H04/4R3HA
ACHP-H06/4R3HA
ACHP-H08/4R3HB
ACHP-H10/4R3HB
ACHP-H08/4R3HA
ACHP-H10/4R3HA
ACHP-H12/5R3HA
ACHP-H14/5R3HA
ACHP-H16/5R3HA
Version 2
2022-01-05

R32 Split - Air to Water Heat Pump 20220105
2
Contents
Part1 General information ..............................................................................3
Part2 Features .................................................................................................7
Part3 Piping System........................................................................................9
Part4 Dimension ............................................................................................21
Part5 Electrical Principle Diagram...............................................................24
Part6 Capacity Amendment..........................................................................26
Part7 Hydronic Performance........................................................................42
Part8 Sound Levels .......................................................................................44
Part9 Installation ...........................................................................................45
Part10 Wired Controller ................................................................................67
Part11 PCB Instruction .................................................................................98
Part12 Trouble Shooting.............................................................................101

R32 Split - Air to Water Heat Pump 20220105
3
Part1 General information
1. Nomenclature
Outdoor Unit
1 2 3 4 5 6 7 8 9 10 11 12 13
A C H P - H 0 4 / 4 R 3 H A - O
NOTE:
1、A: AUX
2、C:chiller
3、H: heat
4、P: pump
5、H: cooling and heating
6-7、capacity：04:4kW; 06:6kW; 08:8kW; 10:10kW; 12:12kW; 14:14kW; 16:16kW;
8、power supply：4：220V-240V-1-50Hz；5：380V-415V-3-50Hz
9-10、R3：R32
11、H：high efficiency
12、A: design number
13、O：outdoor unit
Hydronic Box
1 2 3 4 5 6 7 8 9 10 11 12 13
A C H P - H 0 4 / 4 R 3 H A - O
NOTE:
1、A: AUX ACHP-H04/4R3HA-I
2、C: :chiller
3、H: heat
4、P: pump
5、H: cooling and heating
6-7、capacity：04:4kW; 06:6kW; 08:8kW; 10:10kW; 12:12kW; 14:14kW; 16:16kW;
8、power supply：4：220V-240V-1-50Hz；5：380V-415V-3-50Hz
9-10、R3：R32
11、H：high efficiency
12、A: design number
13、I：indoor unit

R32 Split - Air to Water Heat Pump 20220105
4
2. Unit appearance
Capacity
Outdoor unit Hydronic box
Model Appearance Model Appearance
4kW ACHP-H04/4R3HA-O ACHP-H04/4R3HA-I
6kW ACHP-H06/4R3HA-O ACHP-H06/4R3HA-I
8kW ACHP-H08/4R3HA-O ACHP-H08/5R3HA-I
10kW ACHP-H10/4R3HA-O ACHP-H10/5R3HA-I
12kW ACHP-H12/5R3HA-O ACHP-H12/5R3HA-I
14kW ACHP-H14/5R3HA-O ACHP-H14/5R3HA-I
16kW ACHP-H16/5R3HA-O ACHP-H16/5R3HA-I
3.Product line
Capacity Heat pump Model Hydronic box Outdoor Power supply（V）
4KW ACHP-H04/4R3HA ACHP-H04/4R3HA-I ACHP-H04/4R3HA-O 220
6KW ACHP-H06/4R3HA ACHP-H06/4R3HA-I ACHP-H06/4R3HA-O 220
8KW ACHP-H08/4R3HB ACHP-H04/4R3HA-I ACHP-H08/4R3HA-O 220
10KW ACHP-H10/4R3HB ACHP-H06/4R3HA-I ACHP-H10/4R3HA-O 220
8KW ACHP-H08/4R3HA ACHP-H08/5R3HA-I ACHP-H08/4R3HA-O
ODU:220
Hydronic box :380
10KW ACHP-H10/4R3HA ACHP-H10/5R3HA-I ACHP-H10/4R3HA-O
ODU:220
Hydronic box :380
12KW ACHP-H12/5R3HA ACHP-H12/5R3HA-I ACHP-H12/5R3HA-O 380
14KW ACHP-H14/5R3HA ACHP-H14/5R3HA-I ACHP-H14/5R3HA-O 380
16KW ACHP-H16/5R3HA ACHP-H16/5R3HA-I ACHP-H16/5R3HA-O 380

R32 Split - Air to Water Heat Pump 20220105
5
3. Selection and System Design
3.1 Selection procedure
Step1Total heat load calculation
Calculate conditioned surface area Select the heat emitters (type, quantity, water temperature and heat load)
Step2 System configuration
Decide whether to include AHS (auxiliary heat source) and set AHSs switching temperature Decide whether
backup electric heater is enabled or disabled
Step3Selection of outdoor units
Determine required total heat load on outdoor units. Set capacity safety factor; Select power supply
Provisionally select A-IThermal Split unit capacity based on nominal capacity
Correct capacity of the outdoor units for the following items:
Outdoor air temperature / Outdoor humidity / Water outlet temperature1 /
Altitude / Antifreeze fluid
Is corrected A-IThermal Split unit capacity Required total heat load on outdoor units
Notes:
1. If the required water temperatures of the heat emitters are not all the same, the A-IThermal Splits outlet water
temperature setting should be set at the highest of the heat emitter required water temperatures. If the water outlet
design temperature falls between two temperatures listed in the outdoor unit's capacity table, calculate the
corrected capacity by interpolation.
2. If the outdoor unit selection is to be based on total heating load and total cooling load, select Split units which
satisfy not only the total heating load requirements but also the total cooling load requirements.
System selection s complete Select a larger model or enable
backup electric heater operation
Yes NO

R32 Split - Air to Water Heat Pump 20220105
6
3.2 Leaving Water Temperature (LWT) Selection
The recommended design LTW ranges for different types of heat emitter are::
For floor heating: 30 to 35℃
For fan coil units: 30 to 45℃
For radiators: 40 to 50℃
The recommended design LTW ranges for different type of cooling emitter are
For fan coil units: 7 to 18℃
For floor cooling18 to 25℃
The recommended design water tank temperature for domestic hot water
Water tank: 50 to 55℃
3.3 Selection of water tank（Procured locally by customers）
Capacity(kW) 4-6kW 8-10kW 12~16kW
Water Tank Volume (L) 100~250 150~300 200~500
Minimum heat exchange area of Stainless steel coil
(㎡) 1.4 1.4 1.6
Minimum heat exchange area of enamel coil (㎡) 2.0 2.0 2.5
3.4 Selection of water pump（Procured locally by customers）
Type Recommended Brand Recommended model
External circulation pump
g
rundfos UPMM25-95
wilo Para25/9
Floor heating mixing water pump grundfos UPMM25-95
wilo Para25/9
DHW water pump wilo RS15/6
solar water pump wilo Para25/8
3.5 Match table of ODU and Hydronic Box
ODU Hydronic Box
ACHP-H04/4R3HA-O AHM-P24R2/C9D3A
ACHP-H06/4R3HA-O AHM-P24R2/C9D3A
ACHP-H08/4R3HA-O AHM-P24R2/C9D3A
AHM-P36R25/C9D9A
ACHP-H10/4R3HA-O AHM-P24R2/C9D3A
AHM-P36R25/C9D9A
ACSHC-H42A5/ASR2DI AHM-P60R25/C9D9A
ACSHC-H48A5/ASR2DI AHM-P60R25/C9D9A
ACSHC-H60A5/ASR2DI AHM-P60R25/C9D9A
3.6 Optimizing System Design
To get the most comfort with the lowest energy consumption with A-IThermal, it is important to take account of the
following considerations:
Choose heat emitters that allow the heat pump system to operate at as low a hot water temperature as
possible whilst still providing sufficient heating.
Make sure the correct weather dependency curve is selected to match the installation environment (building
structure, climate) as well as ender users demands.
Connecting room thermostats (field supplied) to the hydronic system helps prevent excessive space heating
by stopping the outdoor unit and circulator pump when the room temperature is above the thermostat set point

R32 Split - Air to Water Heat Pump 20220105
7
Part2 Features
1. Heating + Cooling +Demostic hot water
2. DC Inverter Technology, High Energy Efficient
The compressor speed is controlled according to the indoor heating demand, and the output is completely on
demand, more comfortable enjoyment: In any case, it can maintain a stable indoor temperature
Full DC inverter system, inverter compressor + DC external fan + inverter water pump. Leading in the energy
efficiency industry, the highest SCOP=5.2(A+++), far exceeding the EU energy efficiency standard by 14.4%
3. Wide ambient temperature and water temperature operation ranges
4. Floating water temperature control more comfort
Changes in outdoor air temperature, changes in heat required indoors, But fix water temperature, provide
constant heat, overheating, waste
5. Long piping length
Maximum piping length for outdoor unit and hydronic box -- 50m, see amend table below
Minimum piping length for outdoor unit and hydronic box -- 3m
Maximum piping height difference for outdoor unit and hydronic box -- 20m
When the water tank is connected,
Maximum length between the 3-way valve and hydronic box -- 3m
Maximum length between the water tank and hydronic box -- 10m

R32 Split - Air to Water Heat Pump 20220105
8
single connection pipe(m) amend factor
5 10 15 20 25 30 35 40 45 50
height difference
between the
hydronic box and
ODU
hydronic box above
the ODU
0m 1 0.98 0.96 0.94 0.92 0.9 0.88 0.86 0.84 0.82
5m - 0.97 0.95 0.93 0.91 0.89 0.87 0.85 0.83 0.81
10m - - 0.94 0.92 0.9 0.88 0.86 0.84 0.82 0.8
15m - - - 0.91 0.89 0.87 0.85 0.83 0.81 0.79
20m - - - - 0.88 0.86 0.84 0.82 0.8 0.78
hydronic box under
the ODU
0m 1 0.98 0.96 0.94 0.92 0.9 0.88 0.86 0.84 0.82
5m - 0.98 0.96 0.94 0.92 0.9 0.88 0.86 0.84 0.82
10m - - 0.96 0.94 0.92 0.9 0.88 0.86 0.84 0.82
15m - - - 0.94 0.92 0.9 0.88 0.86 0.84 0.82
20m - - - - 0.92 0.9 0.88 0.86 0.84 0.82
Note:
1) It is recommended that the single pipe length of the connecting pipe should not exceed 30m. If it exceeds 30m,
additional refrigerant needs to be charged, which may cause the total refrigerant charge to exceed the standard
requirements;
2) When the single pipe length of the connecting pipe exceeds 30m, it may affect the performance of the unit.so It
is not recommended that the single pipe length exceeds 30m.
6. Backup electric heating, More economical and more comfortable
Function: As a supplement to the capacity of the heat pump when the outdoor temperature is low
Turn on : Only when the heat pump capacity is slightly insufficient (that is, the outdoor temperature is below
the equilibrium temperature). But the opening rate is very low throughout the heating season
7. Sterilization function
With sterilization function, the use of domestic hot water is healthier.
Sterilization temperature: about 65
Duration: Suggest 10 minutes, refers to the time that can be maintained in high temperature water, .
Operating time: once a week
8. User interface
New type touch key wired controller
Real-time check of operating parameters
Built-in temperature sensor
Built-in wifi module
Multiple languages
Modbus protocol and network flexibility, etc.

R32 Split - Air to Water Heat Pump 20220105
9
Part3 Piping System
1. Piping diagram
1.1 Outdoor Unit
High pressure sensor
High pressure switch
LP switch
Ambient Tem.sensor
Defrost tem.Sensor
EXV
Suction
tem.sensor
Discharge tem.sensor
Solenoid valve
Capillary
COMP LGS
Condensor
FWY
Stop valve
Stop valve

R32 Split - Air to Water Heat Pump 20220105
10
1.2 Hydronic Box
T1
T2
T3
T4
T5
F
A Plate heat exchanger(PHE)
BExpansion tank
C Inverter water pump
D E-heater
E Discharge valve
F Flow switch
GSafty valve
A
B
C
D
E
F G H
H Pressure gauge
T1 Gas pipe Temp.sensor
T2 Liquid pipe Temp.sensor
T3 PHE outlet Temp.sensor
T4 PHE inlet Temp.senso
r
T5 Hydronic box outlet Temp.sensor
I Anti-freeze pressure switch
I

R32 Split - Air to Water Heat Pump 20220105
11
1.2 Air to water heat pump
Tsolar Solar panel temp. senso
r
Twt Temperature of domestic hot water tank
Tici Plate heater liquid temp. sensor
Tico Plate heater gas temp. sensor
Tai Room temp. sensor
Two_A Plate heater outlet temp. senso
r
Two_B Hydronic box outlet temp. sensor
Twi H
y
dronic box inlet temp. senso
r
Twt_BT Balance tank temp. sensor
Twi_UFH Floor heating inlet temp. sensor
P1 Water pump for h
y
dronic box
P2 Water pump for outside
P3 Water pump for floor heating
P4 Water pump for hot water tank
P5 Water pump for Solar
MV1 Three way valve
MV2 Two wa
y
valve
R32 Split Type Air Source heat pump unit is an integrated airtowater system which can supply heating,
cooling and domestic hot water. The outdoor heat pump system extracts heat from the outdoor air and transfers
this heat through refrigerant piping to the plate heat exchanger in the hydronic box. The heated water in the
hydronic box circulates to low temperature heat emitters (underfloor heating loops or low temperature radiators)
to provide heating, and to the domestic hot water tank to provide domestic hot water. The 4way valve in the
outdoor unit can reverse the refrigerant cycle so that the hydronic box can provide chilled water for cooling
using fan coil units
The heating capacity decreases under low ambient temperature. Backup electric heater is optional to
provide additional heating capacity for user during extremely cold weather when the heat pump capacity is
insufficient.
MV3 Three-wa
y
valve
EH1 E-heater in hydronic box
EH2 E-heater in tank
LPS Anti-frezze low pressure switch
FS Float switch
RC Wired controller
HU H
y
dronic box
WHE Plate heater exchan
g
er
HWT Domestic hot water tank
STC Solar panels
A
HS auxiliary heat source (Gas boiler)
BT Balance tank
UFH Floor heating
RDT Heatin
g
radiato
r
FCU Fan coil unit
RT Room thermostat

R32 Split - Air to Water Heat Pump 20220105
12
2. System Configurations
R32 Split Type Air Source heat pump unit can be configured to run with the electric heater either enabled
or disabled and can also be used in conjunction with an auxiliary heat source such as a boiler.
The chosen configuration affects the size of heat pump that is required. Three typical configurations
are described below.
Configuration 1: Heat pump only
The heat pump covers the required capacity and no extra heating capacity is necessary.
Requires selection of larger capacity heat pump and implies higher initial investment.
Ideal for new construction in projects where energy efficiency is paramount
Configuration 2: Heat pump and backup electric heater
Heat pump covers the required capacity until the ambient temperature drops below the point at which the heat
pump is able to provide sufficient capacity. When the ambient temperature is below this equilibrium point, the
backup electric heater supplies the required additional heating capacity
Best balance between initial investment and running costs, results in lowest lifecycle cost
Ideal for new construction.
Configuration 3:Heat pump conjunction with auxiliary heat source
Heat pump covers the required capacity until the ambient temperature drops below the point at which the heat
pump is able to provide sufficient capacity. When the ambient temperature is below this equilibrium point,
depending on the system settings, either the auxiliary heat source supplies the required additional heating
capacity or the heat pump does not run and the auxiliary heat source covers the required capacity.
Enables selection of lower capacity heat pump.
Ideal for refurbishments and upgrades.
System configurations
Low ambient temperature High smbient temperature
Max heating
requirement
Configuration 1
Configuration 2
Configuration 3
Heat pump capacity
Heating requirement

R32 Split - Air to Water Heat Pump 20220105
13
3. Typical Applications
3.1 Space Heating Only
The room thermostat is used as a switch. When there is a heating request from the room thermostat, the
unit operates to achieve the target water temperature set on the Wired controller. When the room temperature
reaches the thermostats set temperature, the unit stops.
When the heating terminal uses floor heating and Heating radiator at the same time, the two ends of the
floor heating and low temperature radiator require different working water temperatures. In order to meet these
two different working water temperatures at the same time, it is necessary to install a mixing valve and a mixing
water pump at the inlet and outlet of the floor heating , The outlet water temperature of the unit is set to the
water temperature required by the heating radiator, and the water mixing valve and water mixing pump are set
to reduce the inlet water temperature of the floor heating.
REMARK
1 Outdoor unit 9 Mixing valve and mixing water pump
2 Hydronic box 10 Distributor
3 Plate heat exchanger 11 Collector
4 Backup electric heater(optional) 12 Bypass valve
5 Internal circulator pump RDT Heating radiator
6 Wired controller FLH Floor heating loops
7 Stop valve (locol) RT Room thermostats
8 Balance water tank

R32 Split - Air to Water Heat Pump 20220105
14
3.2 Space Heating and Domestic Hot Water
The room thermostats also can connect to a motorized valve. Each rooms temperature is regulated by the
motorized valve on its water circuit. Domestic hot water is supplied from the domestic hot water tank connected
to the hydronic box. The water tank should built in a temperature sensor which connect to the hydronic box. A
bypass valve is required
REMARK
1 Outdoor unit 11 Distributor
2 Hydronic box 12 Collector
3 Plate heat exchanger 13 Bypass valve
4 Backup electric heater 14 Electric heating
5 Internal circulator pump 15 Domestic hot water tank
6 Wired controller 16 Coil in the water tank
7 Stop valve (field supplied) RDT Heating Radiator
8 Motorized 3way valve FLH Floor heating loops
9 Balance water tank RT Room thermostats
10 Mixing valve and mixing water pump

R32 Split - Air to Water Heat Pump 20220105
15
3.3 Space Heating, Space Cooling and Domestic Hot Water
Floor heating loops & Heating radiator & Fan coil units are used for space heating , fan coil units are used
for space cooling. Domestic hot water is supplied from the domestic hot water tank connected to the hydronic
box. The unit switches to heating or cooling mode according to the temperature detected by the room
thermostat. In space cooling mode, the 2way valve is closed to prevent cold water entering the floor heating
loops & Heating radiator.
REMARK
1 Outdoor unit 12 Mixing valve and mixing water pump
2 Hydronic box 13 Distributor
3 Plate heat exchanger 14 Distributor
4 Backup electric heater(optional) 15 Bypass valve
5 Internal circulator pump 16 Electric heating
6 Wired controller 17 Domestic hot water tank
7 Stop valve 18 Coil in the water tank
8 Motorized 3way valve RDT Heating Radiator
9 Balance water tank FLH Floor heating loops
10 External circulation pump FCU Fan coil units
11 Twoway valve RT Room thermostats

R32 Split - Air to Water Heat Pump 20220105
16
3.4 Space Heating and Space Cooling
Floor heating loops & Heating radiator & fan coil units are used for space heating , fan coil units are used
for space cooling. In space cooling mode, the 2way valve is closed to prevent cold water entering the floor
heating loops & Heating radiator.
Remark
1 Outdoor unit 10 Twoway valve
2 Hydronic box 11 Mixing valve and mixing water pump
3 Plate heat exchanger 12 Distributor
4 Backup electric heater(optional) 13 Distributor
5 Internal circulator pump 14 Bypass valve
6 Wired controller RDT Radiator
7Stop valve FLH1n Floor heating loops
8 Balance water tank FCU Fan coil units
9 External circulation pump RT Room thermostats

R32 Split - Air to Water Heat Pump 20220105
17
3.5 Auxiliary heat source provides space heating only
Users can also use only gas water heaters for heating
REMARK
1 Outdoor unit 10 Mixing valve and mixing water pump
2 Hydronic box 11 Distributor
3 Plate heat exchanger 12 Water collector
4 Backup electric heater(optional) 13 Bypass valve
5 Internal circulator pump RDT Heating Radiator
6 Wired controller FLH Floor heating loops
7 Stop valve AHS Auxiliary heating source
8 oneway valve RT Room thermostats
9 Balance water tank

R32 Split - Air to Water Heat Pump 20220105
18
3.6 Space Heating Through Floor Heating Loops and Fan Coil Units
The floor heating loops and fan coil units require different operating water temperatures. To achieve these
two set points, a mixing station is required. Room thermostats for each zone are optional.
The outlet water temperature of the unit is set to the water temperature required by the fan coil unit, and
the mixing valve and mixing pump are set to reduce the inlet water temperature of the floor heating
Figure 3.6: Space heating through floor heating loops and fan coil units
REMARK
1 Outdoor unit 9 External circulation pump
2 Hydronic box 10 Mixing valve and mixing water pump
3 Plate heat exchanger 11 Distributor
4 Backup electric heater(optional) 12 Distributor
5 Internal circulator pump 13 Bypass valve
6 Wired controller FCU Fan coil units
7Stop valve FLH Floor heating loops
8 Balance water tank RT Room thermostats

R32 Split - Air to Water Heat Pump 20220105
19
3.7 Space Heating, Space Cooling and Domestic Hot Water Compatible with Solar Water Heater
Floor heating loops & Heating Radiator &fan coil units are used for space heating, and fan coil units are
used for space cooling. The temperature in the domestic hot water tank is controlled by the hydronic box. A
temperature sensor needs to be placed in the domestic hot water tank and connected to the hydronic box.
When it is detected that the temperature of the domestic hot water tank is lower than the set temperature and
meets the requirements for solar hot water activation When conditions are met, turn on the solar water pump
to realize the solar hot water function.
Figure 3.7 Space heating, space cooling and domestic hot water compatible with solar water heater
REMARK
1 Outdoor unit 14 Water collector
2 Hydronic box 15 Bypass valve
3 Plate heat exchanger 16 Electric heating
4 Backup electric heater(optional) 17 Domestic hot water tank
5 Internal circulator pump 18 Coil 1 in the water tank
6 Wired controller 19 Coil 2 in the water tank
7 Stop valve 20 solar water pump
8 Motorized 3way valve 21 Solar panel
9 Balance water tank RDT Heating Radiator
10 External circulation pump FLH Floor heating loops
11 Twoway valve FCU Fan coil units
12 Mixing valve and mixing water pump RT Room thermostats
13 Distributor

R32 Split - Air to Water Heat Pump 20220105
20
3.8 Space Heating with heat pump and AHS, space cooling with heat pump and solar for hot water
When the heating insufficient, the gas boiler (AHS) is used as an additional heat source, and floor heating
or fan coils or low temperature radiators are used for space heating (also can be used in combination with
various types of terminals), The fan coil is used for space cooling. The temperature in the domestic hot water
tank is controlled by the hydronic box. A temperature sensor needs to be placed in the domestic hot water tank
and connected to the hydronic box. When it is detected that the temperature of the domestic hot water tank is
lower than the set temperature and meets the requirements for solar hot water activation When conditions are
met, turn on the solar water pump to realize the solar hot water function.
Figure 3.8Space Heating with heat pump and AHS, space cooling with heat pump and solar for hot water
REMARK
1 Outdoor unit 14 Distributor
2 Hydronic box 15 Water collector
3 Plate heat exchanger 16 Bypass valve
4 Backup electric heater(optional) 17 Electric heating
5 Internal circulator pump 18 Domestic hot water tank
6 Wired controller 19 Coil 1 in the water tank
7 Stop valve 20 Coil 2 in the water tank
8 Motorized 3way valve 21 solar water pump
9 oneway valve 22 Solar panel
10 Balance water tank RDT Radiator
11 External circulation pump FLH Floor heating loops
12 oneway valve FCU Fan coil units
13 Mixing valve and mixing water pump RT Room thermostats