Idea ISW-10 SF1-DN1 User manual

1
INTELLIGENCE INVERTER SPLIT
HEAT PUMP INSTALLATION MANUAL
MODEL: ISW-10, 15, 18, 24, 32 SF1-DN1 outdoors
ISW-10, 15, 18, 24, 32 SF1-SPM indoors

2
Dear user:
Thank you for using our products!
You are using an air source heat pump unit. There are certain
requirements for the installation, use and maintenance of the unit.
Properly installed, used, and maintained, your hot water unit will have a
reduced failure rate and a significant increase in service life.
At the same time, correct installation, use, and maintenance will reduce
the failure rate of your hot water unit and increase its service life.
If not in use for a long time in winter, be sure to empty the water in the
system to avoid freezing crack.
We are always committed to technical improvement, Our company
reserves the right to modify this technical manual without prior notice.
Please keep it well for further reference.
If there are mistakes and omissions, please criticize and correct them.

CONTENT
I OVERVIEW .................................................................................................................................................................................................. - 4 -
1.1 TYPE & MODEL ........................................................................................................................................................................................................... - 4 -
1.2 COMPONENTS ............................................................................................................................................................................................................ - 4 -
1.3 SCHEMATIC DIAGRAM OF SYSTEMS ........................................................................................................................................................................... - 5 -
1.4 COOLING OPERATION ................................................................................................................................................................................................. - 5 -
1.5 HEATING OPERATION ................................................................................................................................................................................................. - 6 -
1.6 DEFROST OPERATION ................................................................................................................................................................................................. - 6 -
1.7 PERFORMANCE PARAMETERS .................................................................................................................................................................................... - 6 -
1.8 ENVIRONMENTAL REQUIREMENTS ......................................................................................................................................................................... - 8 -
II INSTALLATION .......................................................................................................................................................................................... - 9 -
2.1 TRANSPORTATION & HANDLING ................................................................................................................................................................................ - 9 -
2.2 UNPACKING .............................................................................................................................................................................................................. - 11 -
2.3 INSPECTION .............................................................................................................................................................................................................. - 11 -
2.4 SAFETY RULES ........................................................................................................................................................................................................... - 11 -
2.5 SAFETY PRECAUTIONS .............................................................................................................................................................................................. - 11 -
2.6 SELECTION OF INSTALLATION SITES.......................................................................................................................................................................... - 12 -
2.7 THE ARRANGEMENT SPACING OF THE UNITS ........................................................................................................................................................... - 13 -
2.8 SYSTEM INSTALLATION LAYOUT ............................................................................................................................................................................... - 14 -
2.9 MINIMUM CAPACITY OF THE WATER SYSTEM ......................................................................................................................................................... - 19 -
2.10 UNIT INSTALLATION ............................................................................................................................................................................................... - 22 -
2.11 MAINTENANCE SPACE REQUIREMENTS .................................................................................................................................................................. - 23 -
2.12 INSTALLATION STEPS .............................................................................................................................................................................................. - 23 -
2.13 INSTALL UNIT PIPE .................................................................................................................................................................................................. - 23 -
2.14 INSPECTION ITEMS AFTER MECHANICAL INSTALLATION IS COMPLETED ................................................................................................................ - 23 -
III ELECTRICAL INSTALLATION .................................................................................................................................................................- 24 -
3.1 TASK INTRODUCTION AND PRECAUTIONS ................................................................................................................................................................ - 24 -
3.2 POWER SOURCE ....................................................................................................................................................................................................... - 24 -
3.3 UNIT WIRING REQUIREMENTS ................................................................................................................................................................................. - 28 -
3.4 PAY ATTENTION TO INSTALLATION INSPECTION ...................................................................................................................................................... - 28 -
IV SYSTEM TRIAL OPERATION ...................................................................................................................................................................- 30 -
4.1 PRECAUTIONS BEFORE TRIAL OPERATION ................................................................................................................................................................ - 30 -
4.2 INSPECTION ITEMS AFTER INSTALLATION ................................................................................................................................................................ - 30 -
4.3 TRIAL OPERATION ..................................................................................................................................................................................................... - 31 -
V CONTROLLER OPERATION INSTRUCTIONS ...........................................................................................................................................- 32 -
5.1 OVER VIEW ............................................................................................................................................................................................................... - 32 -
5.2 THE BASIC MODEL OF SYSTEM BLOCK DIAGRAM CONTROL ..................................................................................................................................... - 32 -
5.3 REMOTE CONTROLLER ............................................................................................................................................................................................. - 32 -
5.4 FAULT CODE/ SYSTEM PROTECTION ......................................................................................................................................................................... - 46 -
5.5. WIFI CONTROL FUNCTION ....................................................................................................................................................................................... - 52 -
Ⅵ SYSTEM OPERATION AND MAINTENANCE .........................................................................................................................................- 57 -
6.1 SYSTEM DIAGNOSTIC TEST ....................................................................................................................................................................................... - 57 -
6.2 CREANING SYSTEM ................................................................................................................................................................................................... - 58 -
VI FAULT DIAGNOSE AND TREATMENT .....................................................................................................................................................- 60 -

- 4 -
I OVERVIEW
This Part mainly introduces the classification and model, naming rules, main components, working
principle, transportation and storage environment requirements of air source heat pump heating and
cooling units (hereinafter referred to as "units").
1.1 TYPE & MODEL
This series is including two types –Low temperature heating units & Low temperature heating and
cooling units
1.2 COMPONENTS
The unit includes compressors, finned tube heat exchangers, fans, controllers, expansion valves, plate
heat exchangers, etc.
1.2.1 COMPRESSOR
Using high-efficiency scroll compressors, some models of it with EVI function; low vibration, low noise
and high reliability.
1.2.2 FINNED TUBE HEAT EXCHANGERS
Using finned tube heat exchanger with high heat dissipation efficiency. Design and verification of the
distributor for specific models to ensure uniformity of refrigerant distribution in each circuit, greatly
improving the utilization of heat exchangers.
1.2.3 PLATE HEAT EXCHANGER
Using brazed plate heat exchanger, which has characteristics of compact structure and high heat
exchange efficiency.
1.2.4 WATER FLOW SWITCH
Using brand-name products, which with high reliability, and can effectively protect the unit.

- 5 -
1.3 SCHEMATIC DIAGRAM OF SYSTEMS
Figure 1-1
1.4 COOLING OPERATION
1. After compression by the compressor, the low-temperature low-pressure gaseous refrigerant
becomes a high-temperature high-pressure gaseous refrigerant. After being discharged from the
compressor exhaust pipe, it enters the condenser (air-side heat exchanger) through the four-way
reversing valve. As the fan operates, the heat is carried away so that the refrigerant is condensed and
becomes a liquid refrigerant.
2. The high pressure liquid refrigerant that has been condensed by the condenser enters the expansion
valve. The liquid refrigerant expands in volume after throttling, and the state changes to become a
low-temperature, low-pressure liquid refrigerant and a part of the gaseous refrigerant.
3. The gas-liquid mixture of the refrigerant flows into the evaporator (water-side heat exchanger) through
the pipeline, and the refrigerant expands and evaporates in the heat exchanger, absorbs heat in the
water, evaporates and absorbs heat to become gaseous, and the temperature of the brine becomes low.
The pump is continuously operate, and the cooling capacity is continuously pumped to the end
equipment, and then the cooling capacity is emitted.
4. Finally, the gaseous refrigerant that has been expanded and evaporated passes through the four-way
reversing valve and the compressor suction line to enter the compressor then compress again and the
cycle is repeated.

- 6 -
1.5 HEATING OPERATION
1. The working fluid, in its gaseous state, is pressurized and circulated through the system by a
compressor, and then go into the heat exchanger through the fore-way reversing valve. The unit to
release heat though the water, and the refrigerant is condensed into a high pressure liquid.
2. The high pressure liquid refrigerant that has been condensed by the condenser enters the expansion
valve. The liquid refrigerant expands and changes state after throttling, and becomes a low-temperature,
low-pressure liquid refrigerant and a part of the gaseous refrigerant.
3. After passing through the pipeline, the liquid refrigerant evaporates and absorbs the heat of the air in
the air-side heat exchanger to become a gaseous refrigerant.
4. Finally, the gaseous refrigerant enters the compressor through the four-way reversing valve and the
compressor suction line then compress again and the cycle is repeated.
1.6 DEFROST OPERATION
1. When the unit is running in the heating mode in a low ambient temperature, the air side heat
exchanger may frost, which will affect the heating effect, so defrosting is required.
2. The defrost controller performs long-term monitoring by combining the air side coil temperature and
the timer to determine whether defrosting is required.
3. The unit changes the heating operation to the cooling operation through the four-way reversing valve.
At this moment, the high-temperature and high-pressure gaseous refrigerant is defrost through the air
side heat exchanger. The fan does not operate during the defrost time of the compressor.
4. After the defrosting is completed, the cooling operation is resumed to the normal state - heating
operation by switching the four-way switching valve.
1.7 PERFORMANCE PARAMETERS
FULL DC INVERTER SPlIT HEAT PUMP
MODEL
ISW-10
SF1-DN1/
SPMI
ISW-15
SF1-DRN1
/SPM
ISW-18
SF1-DRN1/
SPM
ISW-24
SF1-DRN1/SPM
ISW-32
SF1-DRN1/
SPM
Working Temperature Range
-25～43℃
Power Supply
220
-
240V/5
0Hz/1N
380
-
415
V/50Hz
/3N
A7W35
Heating capacity
(min-max) (kW) 10(3-11) 16(4-17) 18(4-20) 24(5-27) 32(5-35)
Input power (kW) 2.30 4.0 4.45 6.00 8.00
Rated current (A) 10.50 7.5 9.00 10.00 12.00
COP 4.00 4.0 4.04 4.00 4.00

- 7 -
A2W45
Heating
capacity(min-max)
(kW)
7.8(3-8) 12.2(5-13) 15(4-16) 19(5-20) 25(5-27)
Heating input
power(kW) 2.32 3.60 4.65 6.80 7.70
Rated current (A) 11.00 7.8 9.2 9.8 12.00
COP 3.36 3.39 3.23 3.28 3.25
A35W7
Cooling Capacity/EER
(kW) 7/2.81 11/2.8 14/2.75 19/2.7 25/2.75
Rated Cooling Input
Power/Current(kW/A
)
2.5/11.3 3.93/8 5.0/9.5 7.0/10.0 9.1/14
Heating Outlet hot water
temperature range (℃) 25-55
Cooling Outlet water
temperature range (℃) 7-12
IP Grade (Level of protection) IPX4
Anti-electric shock Rate I
Noise (dB(A)) ≤55 ≤60 ≤60 ≤70 ≤70
Net weight/Gross weight(kg) 96/106 127/137 142/156 220/232 263/275
Diameter of
water connecto
r
(mm) DN25 DN25 DN32 DN32 DN32
Cabinet material plate Galvanized steel/Spray/Gray
Machin
e size
Outdoor unit
(W*D*H)
880*420*7
90mm
930*410*1
270mm
1018*450*1
366mm
1
155
*540*
1432
m
m
1240*540*1
630mm
Indoor unit (W*D*H)
380*330*6
85mm
380*330*
6
85mm
450*330*81
5 550*420*920
550*420*92
0
Compressor Panasonic Rotary EVI DC inverter / Mitsubishi Inverter
Refrigerant/Weight (Kg) R410a/1.9 R410a/ 2.5 R410a/ 2.8 R410a/ 3.8 R410a/ 5.2
Controller 7m Wired controller touch screen display
Copper pipe
Diameter High/Low
(inch) Optional 3/8"/5/8" 3/8"/5/8" 1/2"/3/4" 1/2"/3/4"
Expansion valve Sanhua
Low-voltage switch 0.15/0.05MPa 0.15/0.05MPa
High-voltage switch 3.6/4.2MPa 3.6/4.2MPa
Package Carton packing

- 8 -
1.8 ENVIRONMENTAL REQUIREMENTS
1.8.1 OPERATING ENVIRONMENT
The operating environment requirements of the unit are shown in Table 1-1.
ITEM REQUIREMENT
INSTALLATION LOCATION Installation method: horizontal installation
AMBIENT TEMPERATURE Outdoor: -25 °C ~ +43 °C
ENVIRONMENT HUMIDITY
Outdoor: 5％RH～95％RH
RUNNING POWER 220V±10%/1N～/50Hz；380V±10%/3N～/50Hz；
ALTITUDE Not more than 1000m. Need to reduce the rated power when more than
1000m.
WATER PROOF RATING IPX4
1.8.2 STORAGE ENVIRONMENT
The storage environment requirements of the unit are shown in Table 1-2.
ITEM REQUIREMENT
STORAGE ENVIRONMENT Indoor, clean place (no dust, etc)
ENVIRONMENT HUMIDITY
5％～85％ (no condensation)
AMBIENT TEMPERATURE -30 °C～+54 °C
1.8.3 ANTIFREEZE WARNING
When the ambient temperature of the unit is lower than 0 °C, please ensure that the unit is in the power
supply state, if the antifreeze is not used as the cold carrier (heat) agent; If it cannot be ensured, please
drain the water in the unit, otherwise the unit will have the risk of cracking. Each unit is equipped with
drain valves at the lowest part of the unit's waterway.

- 9 -
II INSTALLATION
This Part describes the mechanical installation of the unit, including transportation, unpacking inspection,
installation layout, and installation procedures, etc.
EQUIPMENT HANDLING, UNPACKING, INSPECTION
2.1 TRANSPORTATION & HANDLING
Choose a road with better conditions to prevent excessive bumps when transporting.
The tilt angle of the unit should be kept within the range of 75 ° ~ 105 ° when transporting. (Figure 2-1)
105
75
Figure 2- 1 The tilt angle of the unit
Please use a forklift to carry it. If there is no forklift, please move it with the help of the cylinder-shaped things like
crabstick.
Rolling transport: 6 piles with same size are placed under the base of the unit. Each roller must be a little longer
than the base frame and suitable for the balance of the unit. (Figure 2-2)


- 10 -

Lifting & installation: (Figure 2-3) The strength of the lifting cable should be 3 times larger than the weight of the
unit. Check and ensure that the lifting hook is fastened to the unit, and the lifting angle should be greater than
60°.

Figure 2- 3 Lifting of the unit

- 11 -
 NOTE:
Do not stand under the unit when lifting.
Add fabric between the unit and the cable to prevent damage to the unit.
2.2 UNPACKING
Try to move the heat pump to the nearest place to the installation site, and then remove the packaging.
Unpacking steps:
1. Remove the side and top panels of cardboard.
2. Remove the packaging.
3. Remove the wood pallet.
2.3 INSPECTION
When receiving the goods of the company, please check that the delivery is complete and undamaged,
and whether the quantity of accessories are correct and all of the accessories are undamaged. If any
parts are missing or damaged during the inspection, please report to the carrier immediately. And if you
find hidden damage, please report it to the local office of the carrier and product supplier.
2.4 SAFETY RULES
In order to achieve the design performance of the unit and maximize its service life, please strictly follow
the installation instructions. This section should be applied in conjunction with current unit and electrical
installation regulations.
The unit is installed in an integrated floor plan, please install it outdoors or on the roof of the building.
Before installing the equipment, confirm that the installation environment meets the requirements (as
showed 1.8.2). And confirm the whether the building should be modified to match the construction of the
pipeline, wiring and the ventilation ducts.
The installation must strictly follow the design drawings and reserve maintenance space. Refer to the
engineering dimensional drawings provided by the manufacturer.
2.5 SAFETY PRECAUTIONS
● Please entrust professionals with professional knowledge to install. If it is installed incorrectly, it may
cause fire, electric shock, injury, water leakage, etc.
● According to the law, reliable grounding work must be carried out. If the grounding work is not
inadequate, it may cause electric shock.
● Do not put fingers, sticks, etc. into the motor fan. High-speed operation of the internal fan of the unit may result
in damage to the unit or personal injury.
● When there is abnormality (such as burnt smell), should immediately turn off the manual power switch, stop
the operation, and contact with the dealer. If continue to operate, it may cause electric shock or fire.
● When the unit needs to be moved or reinstalled, please ask professionals to operate. If the installation is not
perfect, it may cause electric shock, fire, injury, water leakage, etc.
● DO NOT modify or repair the unit by user, otherwise it may cause electric shock or fire.
● When need repair the unit, please entrust professionals. if repaired improperly, it may cause fire, electric shock,
injury, water leakage, etc.

- 12 -
● Confirm that the leakage protection switch is installed. The leakage protection switch must be installed,
otherwise it may cause electric shock.
● Connect the cable correctly. If the cable is connected incorrectly, electrical parts may be damaged.
● DO NOT operate the unit near flammable materials (such as paint, paint, gasoline, chemical reagents, etc.) to
prevent fire or explosion. If cause fire, should turn off the main power immediately and extinguish the fire with fire
extinguishers.
● Regularly check and make sure that the erecting platform is secure and intact.
If the erecting platform is damaged and not strong, the unit may fall and cause casualties.
● When cleaning the unit, should cut off the manual power switch. If not, it may cause damage to the unit or
personal injury.
● Do not touch the refrigerant exhaust parts by hand to prevent burns.
● Please use the corresponding fuse. It can not be replaced by copper wire or iron wire. Otherwise, the unit will
be seriously damaged or fire.
● Do not spray flammable spray onto the unit, otherwise it may cause fire.
2.6 SELECTION OF INSTALLATION SITES
1. This outdoor unit is designed to be located outdoors with sufficient clearance for free entrance to the inlet and
discharge air openings. The location must also allow for adequate service access.
2. The installation position of the unit should avoid the boiler flue or other air environment that will corrode the
condensing coil and the metal parts of the unit.
3. If the unit is located in a location accessible to unauthorized personnel, isolation safety measures such as
guardrails should be taken. This will prevent sabotage and accidental damage.
4. The bearing surface of erecting platform of the unit should be flat, can withstand the weight of the unit, can
install the unit horizontally, and will not increase noise and vibration.
5. The operating noise and exhaust air of the unit should not affect neighbors.
6. There is no flammable gas leakage in the installation place of the unit.
7. Easy to carry out pipelines and electrical connections.
8. For occasions with special installation requirements, please consult the building contractor or architect or
other professional.
 NOTE: Installation in the following locations may cause machine malfunction (if it cannot be
avoided, please consult)
● In places where there is mineral oil such as cutting machine oil.
● In places where there is more salt in the air such as on the coast on the coast.
● In places where there are corrosive gases like sulfur gas in areas with hot spring.
● In places where the power supply voltage fluctuates severely.
● Outside the car or cabin.
● In places where is filled with oil such as in the kitchen .
● In places where there is a strong electromagnetic wave.
● In places where there are flammable gases or materials are present.
● In places where there is volatile acid gas or volatile alkaline gas.
● Other special environmental conditions.

- 13 -
2.7 THE ARRANGEMENT SPACING OF THE UNITS
Recommended installation spacing diagram for outdoor unit (unit: mm)
Figure 2- 4 Recommended installation spacing diagram for unit installation
 NOTE:
● Required service & water pipes connection space when installing the unit.
● If there are obstacles in front of the air outlet of the unit, please make sure that the obstacles are more than 2000 mm
from the air outlet.
● If there are sundries around the unit, please make sure that the sundries are more than 400 mm from the blow of the
unit.
● The unit should not be installed in basements, indoors or other confined spaces. If the project requires the unit to be
installed in such spaces, please consult with our company or the designated supplier.

- 14 -
2.8 SYSTEM INSTALLATION LAYOUT
2.8.1 OVERALL LAYOUT OF THE HYDRAULIC SYSTEM
For hot water and floor heating is shown in the figure below.
For heating/cooling is shown in the figure below
2.8.2 INDOOR UNIT AND OUTDOOR UNIT CONNECTION PIPE
CONNECTION
1, Use the connection pipe to connect outdoor unit and indoor unit together. ( Optional see pic1)

- 15 -
（Pic 1）
2. Remove the head nut of stop valve from the indoor unit and the outdoor unit .(see pic2，3)
(pic2，3)
3. Drip a few frozen oil onto the copper nut of the connecting pipe and screw it to the stop valve’s joint of
the indoor unit and the outdoor unit and tighten with a wrench . The tightening torque of the copper
pipe bolt is about 10kg·m.(see pic4、5)

- 16 -
(pic4、5)
4.
Leakage detecting: Use a wrench to remove the head nut of needle valve from the outdoor unit’s stop- 18 -
valve.
(pic 6)
5, Same operation to connect with the indoor units. After the leakage detecting and vacuuming are
completed, then open the stop
valve of the indoor unit (See Pic7,8). It is necessary to use the hexagonal counterclockwise to

- 17 -
completely open the stop valve of indoor unit before starting the operation.
(Pic 7, 8)
6, Vacuumize:
(1),Equipment: vacuum pump, pressure gauge，Allen wrench
(2),Discharge the refrigerant added to the connecting pipe when doing leakage detecting .
(3), Use a hexagon socket to completely unscrew the outdoor unit’s stop valve counterclockwise,
draw a vacuum from the needle valve of the outdoor unit’s stop valve.（Pic 9）
(Pic 9)
7, To ensure that the vacuum is
acceptable, the pumping time cannot less than 20 minutes.
(Pic10,11),Or the pressure value of the pressure gauge is lower than -0.1MPa.

- 18 -
(Pic10,11)
8, After the vacuum is acceptable,
open the stop valve of the outdoor unit (See Pic12,12). It is necessary to use the hexagonal counterclockwise to
completely open the stop valve of indoor and outdoor unit before starting the operation. Let the refrigerant go
through the whole system.
(Pic12,13)

- 19 -
Note: For installation related to the water pipe part:
 ● Install a valve at the highest point of each water circulations for releasing air from water system.
 ● A Y-shape filter is very important in front of circulating water pump of heat pump.
 ● If more pieces heat pump installed in one water pipe system, the connection of these heat pumps can’t
be in series, only can be in parallel or independent.
 Pre-start up
Checking before pre-start up
 ● Check if the water pipe are connected well and if there is any leakage. The water supply valve are open.
 ● Make sure the water flow is enough and meet the demand of the heat pump selected and water flow
smoothly without air . In cold area, pls make sure that the water flow is without freezing
 ● Check if the power cable is connected well and properly grounded.
 ● Check if fan blade is blocked by the fixing plate of fan blade and fan blade protecting grill.
 ● Check if the tank has been filled with water or enough water volume that can meet the demand of heat pump running
 If everything above is ok, the unit can start up , if any of them fails, please improve it
Pre-start up
 ● After check completely and confirm no problem for installation, the unit can be power to start up .
 ● After connect power supply, heat pump delay 3mins to start. Check carefully is there is some abnormal
noise or vibration or if the working current is normal or if water temp increasing is normal.
 ● After the unit is working properly for 10 minutes without any problem, then the pre-start up is usefully
completed. If not, please refer to Service and Maintenance Chapter to solve the problem.
2.9 MINIMUM CAPACITY OF THE WATER SYSTEM
For the household air conditioning water system, in order to obtain good thermal stability, the air
conditioning load should be accurately determined first, and the host with matching installed capacity
should be selected; Secondly, the greater the water capacity of the system, the greater the system
cooling capacity, the better the thermal stability of the system. Conversely, the thermal stability of the
system is worse. Therefore, when designing the water system, it should be checked whether the water
capacity of the calculation system meets the thermal stability requirements of the system. When the
actual water capacity of the system cannot meet the requirements, the system main pipe diameter or a
new water storage tank should be increased. The system minimum water capacity can refer to the
following recommended values:
Recommended minimum volume table for water system
Model
Recommended
minimum volume(L)
XD-03BSPM 40-60
XD-05,06BSPM 60-80

- 20 -
Figure 2-6
Because the floor heating capacity of the floor heating system is large, the system temperature stability
is greatly guaranteed, and this point can be ignored.
For commercial water system design, it should be checked whether the water capacity of the calculation
system meets the thermal stability requirements of the system. When the actual water capacity of the
system cannot meet the requirements, the main pipe diameter of the system or a new water storage tank
should be added. It is not means that the greater the water capacity of the system, the better the water
capacity is. The water capacity is too large, and its thermal stability is undoubtedly good. However, after
a long time of shutdown, time for pre-cooled or warm-up of the air conditioner will be extend.
The water capacity of the system can be calculated as follows:
V=P×T/（C×Δt）
V: system minimum (large) water capacity, kg (unit), 1 kg =1 L.
P: the heat dissipation power of the terminal of the unit, it can be calculated according to the rated
cooling capacity of the host, W(unit).
T: Minimum (large) requirement for stability, S (unit);
C: Specific heat of water, 4200J/kg·°C;
Δt: The fluctuation of water temperature requirements, it can be referenced by 5K.
2.9 MECHANICAL PARAMETER
XD-03BSPM