DC Inverter Split Air to Water Heat Pump for heating/cooling/DHW
Comfortable and more energy-Saving, more flexible and reliable
DC Inverter technology
- Compressor has twin rotary dc inverter technology;
- Fan motor and water pump have AC type or DC type for option;
- Quiet and efficient operation when system balanced;
- Wide range of input voltage 165-265V and 340-420V;
- Compressor changing working frequency from time to time;
Control
- PID control system used for controlling the heat pump;
- TURBO mode rise up heating capacity for cold days;
- Multi-functional controller panel with RS485 and WIFI;
- Water temperature changing according to heat curves;
- It has remote switch for external control;
Split heat pump
- Split type connected indoor and outdoor unit by copper lines;
- They are easy to be carried and making installation flexible;
- Avoid freezing on water heat exchanger;
- It saves time and labor cost for installation;
- Cabinet made of galvanized steel with powder coated
Domestic hot water heating
- Domestic hot water heating function is available;
- Activated by DHW 3-way valve and DHW sensor;
- A heat pump has heating/cooling/DHW heating;
- DHW heating is asynchronous and prior to heating/cooling;
Hydronic component for heating/cooling system
Water pump
- WILO and Grundfos water pump has AC and DC type for option;
- AC type is cheaper than DC type;
Backup Electric Heater
- 3kW and 6kW with spec. 230V/1N~ or 380V/3N~;
- It can be pre-installed or externally installed;
Expansion Vessel
- 2ltrs or 5ltrs are optional;
- It can be pre-installed;
DHW 3-Way Valve (Optional)
- Activates the DHW heating function;
- It can be pre-installed or externally installed;
Performance
Model (Outdoor+Indoor Unit) | AS9C+AG9C | AS15C+AG15C | AS18C+AG18C | AS20C+AG20C | |
Heating Capacity (A7/W35) | kW | 9.5 | 15 | 18 | 20 |
Power Input | kW | 2.26 | 3.58 | 4.37 | 4.97 |
COP | w/w | 4.2 | 4.18 | 4.11 | 4.0 |
Heating Capacity (A2/W35) | kW | 8.89 | 14.23 | 16.92 | 18.75 |
Power Input | kW | 2.46 | 3.97 | 4.73 | 5.29 |
COP | w/w | 3.61 | 3.58 | 3.57 | 3.54 |
Heating Capacity (A-7/W35) | kW | 8.2 | 13.04 | 15.8 | 17.18 |
Power Input | kW | 2.87 | 4.6 | 5.62 | 6.22 |
COP | w/w | 2.85 | 2.83 | 2.81 | 2.76 |
Heating Capacity (A-7/W45) | kW | 7.8 | 12.07 | 13.83 | 15.64 |
Power Input | kW | 3.15 | 4.92 | 5.73 | 6.62 |
COP | w/w | 2.47 | 2.45 | 2.41 | 2.36 |
Heating Capacity (A7/W55) | kW | 8.43 | 12.95 | 15.14 | 17.74 |
Power Input | kW | 3.25 | 4.98 | 5.91 | 7.01 |
COP | w/w | 2.59 | 2.6 | 2.56 | 2.53 |
Heating Capacity (A2/W55) | kW | 7.93 | 11.98 | 14.04 | 16.13 |
Power Input | kW | 3.34 | 5.03 | 6 | 6.98 |
COP | w/w | 2.37 | 2.38 | 2.34 | 2.31 |
Sundez Heat Pump Models | SDDC-075-B | SDDC-125-B-S | SDDC-150-B-S | SDDC-200-B-S |
* For example: At ambient temperature DB7°C/WB6°C, water heated from 30°C to 35°C;
**Due to product improvement, subject to be changed without prior notice, please refer to the nameplate of the product as standard.
TURBO Mode
- In case of urgent demand on more powerful heating capacity output, there is a TURBO mode can be selected on LCD controller panel.
- When TURBO mode is activated, the control system will increase the working frequency of compressor to an upper limit, the heat pump gives out maximum output.
- TURBO mode is recommended for temporary use in extreme cold days or at a situation that need more powerful heating.
- Here is a table shows the estimated outputs for reference.
TURBO Output | AS9C+AG9C | AS15C+AG15C | AS18C+AG18C | AS20C+AG20C | |
Heating Capacity (A7/W35) | kW | 11 | 18 | 19.5 | 23 |
Sundez Heat Pump Models | SDDC-075-B | SDDC-125-B-S | SDDC-150-B-S | SDDC-200-B-S |
Technical Specification
Indoor Unit


Characteristics - Indoor Unit
- Wall mounted design doesn’t take space on ground;
- Brazed plate type water heat exchanger inside;
- Compact size with max. 46kgs;
- Large LCD display controller panel;
- Both Modbus RS485 and WIFI are available;
- Cabinet made of galvanized steel with powder painting;
Hydronic component (Optional)
- Water pump
- DHW 3-way valve (Optional)
- Expansion vessel
- Backup electric heater
Model | AG9C | AG15C | AG18C | AG20C | |
Cabinet Color | Powder Coating with White | ||||
Cabinet Material | Galvanized Metal Sheet | ||||
Dimension (W*D*H) | mm | 500*335*715 | |||
Piping Connection | inch | 1“ -Male | |||
Booster Electric Heater (Optional) | kW | None, or 3, or 6 | |||
Water Heat Exchanger | Brazed Plate Heat Exchanger | ||||
Water Flow Speed | m3/h | 1.6 | 2.6 | 3.1 | 3.5 |
Operation Range | Heating/DHW | Water Side: 20~55°C | |||
Cooling | Water Side: 7~31°C | ||||
Ambient | +5~43°C | ||||
Sound Level | dB(A) | 38 | |||
Net Weight | kg | 38 | 45 | 45 | 46 |
Sundez Heat Pump Model | SDDC-075-B | SDDC-125-B-S | SDDC-150-B-S | SDDC-200-B-S |
*Due to product improvement, subject to be changed without prior notice, please refer to the nameplate of the product as standard.
Technical Specification
Outdoor Unit
Characteristics - Outdoor Unit
- Twin rotary DC inverter compressor;
- At condition of A7/W35 it has COP up to 4.2;
- Cabinet made of galvanized steel with powder coated;
- They are designed for A++;
- Accurate expansion with electronic expansion valve;
- Eco-friendly refrigerant for environmental protection;
- Working at minimum -25°C ambient air temperature;

Model | AS6C | AS9C | AS12C | AS15C | AS18C | AS20C |
Power Supply | 220~240V/1N~50Hz | 380~415V/3N~50Hz | ||||
Dimension (W*D*H) | 920*365*710 | 940*375*800 | 940*375*1340 | 1145*439*1400 | ||
Net Weight | 50 | 57 | 88 | 94 | 102 | 105 |
Compressor Qty | 1 | 1 | 1 | 1 | 1 | 1 |
Compressor Type | Twin rotary DC inverter compressor | |||||
Fan Motor | Axial, AC type or DC type | |||||
Motor Qty | 1 | 1 | 2 | 2 | 2 | 2 |
Operation Range | for heating/DHW, ambient -25~43°C; for cooling, ambient 10~35°C | |||||
Refrigerant | R32/R410a | |||||
Expansion | EEV | |||||
Noise Level dB(A) | <53 | <54 | <55 | <55 | <58 | ≦59 |
Sundez Heat Pump Model | SDDC-075-B | SDDC-125-B-S | SDDC-150-B-S | SDDC-200-B-S |
1) Noise pressure level measured at a distance of 1 meter;
2) Due to improvement, the specification subjects to change without prior notice, refer to nameplate on heat pump as updated one;
The renewable energy products for customers among the world.
General Energy Co., Ltd.
No.1, Yongtong Rd., Daliang, Shunde, Foshan, Guangdong, 528300, China
+86 137 9OO9 1175