Argo GENERA Air-to-Water Heat Pump Installation Manual
This document provides detailed instructions for the installation of the Argo GENERA air-to-water heat pump.
1. Important Information
This manual describes installation and service procedures to be performed by qualified personnel. It should remain with the customer.
Symbols
HINWEIS! (Note!) This symbol indicates a hazard to persons and machinery.
ACHTUNG! (Attention!) This symbol refers to important information to be observed during installation or maintenance of the unit.
TIPP! (Tip!) This symbol indicates tips that facilitate handling the product.
Product Identification
The serial number can be found on the back of the unit. The product labels may include symbols such as:
- Fire hazard
- Read the user manual
- Read the installer manual
Compatible Control Units (not included)
The heat pump must be connected to a control unit, which must be purchased separately.
| Heat Pump | Control Unit |
|---|---|
| ANGHP06 | Argo Control Unit (Code 387030740) |
| ANGHP08 | |
| ANGHP12 |
2. Delivery and Transport
The unit must be transported and stored upright.
HINWEIS! Ensure the heat pump cannot fall over during transport. Ensure the heat pump is not damaged during transport.
Handling from Ground to Installation Site
If the ground permits, using a hand truck is recommended for transporting the unit to the installation site. If the unit needs to be transported on soft ground, such as a lawn, a crane truck is recommended. If a crane is used, the packaging must be intact. If a crane truck cannot be used, a long-hand truck can be used, requiring two people to lift it from the heavier side.
Handling from Pallet to Final Installation Site
Remove packaging and securing straps before lifting. Use lifting straps around each foot. Lifting requires at least two people.
Disposal
Disassembly is in the reverse order of installation. Lift from the base, not the pallet.
Installation Site
Choose an outdoor location to prevent refrigerant leakage into ventilation openings, doors, or similar openings, and to avoid any danger to people or property.
- The bottom of the evaporator must be at least at the level of the average local snow depth. The foundation must be at least 70 mm high.
- Avoid installing near walls that transmit noise, such as bedrooms.
- Ensure the unit's placement does not cause inconvenience to neighbors.
- Ensure unobstructed airflow around the unit, as this affects performance and efficiency.
- Protect the evaporator from direct wind, which can impair the defrosting function.
- Provide a drainage path for condensate water formed during defrosting. Use appropriate materials for drainage.
- Avoid scratching the heat pump during installation.
- If there is a risk of falling snow from the roof, install a protective roof or similar structure over the heat pump, pipes, and cables.
Installation Area Clearances
Maintain minimum clearances:
- 250 mm between the unit and the wall (max. 500 mm in wind-exposed areas).
- 1000 mm free space above the unit.
- 1000 mm free space in front for maintenance.
Safety Distances
Maintain safety distances from windows, doors, and vents as shown in the diagram.
3. Heat Pump Structure
Diagrams illustrating the internal components of the ANGHP06S and ANGHP08S/ANGHP12S models are provided.
4. Pipe Connections
Installation must comply with current regulations.
Minimum System Flow Rate
HINWEIS! An undersized system can cause product damage and operational disturbances. Each system must be dimensioned individually for the recommended system flow rate. The system must be designed for the minimum defrost flow rate at 100% pump operation.
| Minimum Flow Rate during Defrost (100% Pump Speed) (l/h) | Minimum Recommended Pipe Diameter (DN) | Minimum Recommended Pipe Diameter (mm) |
|---|---|---|
| 600 | 25 | 28 |
The maximum return water temperature is approximately 65 °C. The outlet temperature from the heat pump is approx. 75 °C.
The heat pump is not equipped with shut-off valves on the heating side. These must be installed for future service. The return temperature is limited by the return sensor.
Water Quantities
For proper heat transfer, free flow in the climate control system is recommended. This can be achieved with a bypass valve. If free flow cannot be guaranteed, a buffer tank is recommended.
| Models | Minimum Water Volume |
|---|---|
| ANGHP06S | 50 l |
| ANGHP08S | 100 l |
| ANGHP12S | 100 l |
HINWEIS! The pipe system must be flushed before connecting the heat pump; otherwise, components may be damaged by impurities.
System Diagram
Diagrams show principles of systems with hot water and heating systems.
Symbols
| Symbol | Meaning | Symbol | Meaning |
|---|---|---|---|
| ☑ | Shut-off valve | Control module | |
| Expansion vessel | Air/Water Heat Pump | ||
| Filter | Radiator system | ||
| Manometer | Domestic hot water | ||
| Safety valve | Hot water tank | ||
| Changeover valve |
Circulation Pump (GP1)
The circulation pump has an integrated frost protection function and should not be switched off during frost risk. It runs periodically at temperatures below +2 °C to prevent freezing. It also protects against overheating in the heating circuit.
HINWEIS! This frost protection only works when the heat pump is connected to the power supply. If the power supply is interrupted, mechanical frost protection valves must be installed on the water inlet (XL2) and outlet (XL1) of the heat pump.
Pipe Insulation
Insulate all outdoor pipes with at least 19 mm thick pipe insulation.
Circulation Pump Head Curve
A diagram shows the head of the unit when the circulation pump runs at maximum speed.
5. Electrical Connections
National regulations for electrical installations and wiring must be followed.
- Do not connect the heat pump before performing the building insulation test.
- The circuit breaker must have a tripping characteristic of at least 'C'.
- If a residual current device (RCD) is installed in the building, the heat pump must have a separate RCD with a rated residual current of max. 30 mA.
- Permanent wiring must include means for isolating the power supply with all-pole contact separation, enabling complete isolation under overvoltage category III conditions.
- Cable cross-section must be dimensioned according to the used fuse.
- Power supply: 220-240 V~/1/50 Hz via a control box with fuses.
- Power and signal cables should be routed from the rear through the cable entries on the right side of the heat pump (when viewed from the front).
- Use a shielded three-pole cable for communication.
- To avoid interference, do not route sensor cables for external switching contacts near power cables.
HINWEIS! Electrical installation and any service work must be supervised by a qualified electrician. Interrupt the power supply via the main switch before any service work.
HINWEIS! To prevent damage to the heat pump's electronics, check connections, mains voltage, and phase voltage before starting the product.
HINWEIS! Observe the voltage-carrying external control when connecting.
HINWEIS! Only commission the system after it has been filled with water. Components of the system may be damaged.
Accessibility, Electrical Connection
Refer to the section "Disassembly of Side Covers and Top Cover".
Connections
Power Connection
Use a multi-core electrical cable (Terminal block X1).
| Connection 1 x 230 V | Cable Cross-section (mm²) |
|---|---|
| L, N | 1.5 |
| ANGHP06S | 1.5 |
| ANGHP08S | 2.5 |
| ANGHP12S | 2.5 |
Communication Connection (Control Unit)
Use a three-pole shielded cable with a cross-section of 0.5 mm² (Terminal block X2).
For details on connecting the control unit, refer to the reference manual. For the heat pump to communicate with the control unit, a software update may be required.
6. Commissioning and Setting
Preparation
- Before commissioning, check that the charge circuit and the climate system are filled and well-ventilated.
- Check pipes for leaks.
- Do not start the heat pump if there is a risk of the system water freezing.
Water Quality
For correct operation and optimal efficiency, a clean water circuit is essential. A dirty circuit can significantly reduce performance. The water circuit must be cleaned using suitable products and in accordance with valid standards.
Recommended products are compatible with all metals and synthetic materials and officially approved by relevant organizations.
Water must meet the following properties:
| Element | Property | Limit |
|---|---|---|
| pH | 7.5-9.0 | |
| Total Hardness | 4.5-8.5 °dH | |
| Free Chlorine | < 1.0 ppm | |
| Conductivity | <500 µS/cm | |
| Ammonia (NH3) | <0.5 ppm | |
| Sulfate (SO4 2–) | <100 ppm | |
| Hydrogencarbonate (HCO3-) | 60-200 ppm | |
| (HCO3-)/(SO4 2–) | >1.5 | |
| (Ca+Mg)/(HCO3-) | >0.5 | |
| Chloride ion concentration | <100 ppm for pH 7 | |
| <350 ppm for pH 8 | ||
| <600 ppm for pH 9 |
HINWEIS! Do not add antifreeze such as glycol to the hydraulic system, as it can impair the function of internal safety devices like the gas separator. Install frost protection valves near the heat pump instead.
Filling and Venting
Fill the heating system to the required pressure. The system pressure must be between 1.0 bar (min.) and 1.5 bar (max.); the recommended pressure is 1.2/1.3 bar.
The heat pump is equipped with an automatic vent that closes once the system is filled with fluid.
Commissioning and Checks
- The communication cable must be connected.
- If cooling operation is desired, JP3 must be set as described in the "Cooling" section.
- Switch on the main switch.
- Check if voltage is present at the heat pump.
- Set the charge flow rate according to the dimensioning. Refer to the "Setting, Charge Flow" section.
- Adjust menu settings via the indoor unit or control unit as needed.
- Complete the "Installation Check" in the "Important Information" section.
Readjustment and Venting
Some air may escape from the hot water initially, requiring venting. If air noises are heard from the heat pump, circulation pump, or radiators, the entire system needs additional venting. Once the system stabilizes (correct pressure and well-vented), the heating control can be set to the desired values.
7. Control
General
The heat pump has an internal electronic control that coordinates functions such as defrosting, max/min temperature stops, compressor heater activation, and operational protection. The integrated control provides information via a status LED and can be used for servicing. For normal operation, the homeowner does not need access to the integrated control. The heat pump communicates with the control unit; therefore, all settings and measured values are adjusted and read via the control unit.
ACHTUNG! The main product software must be the current version. Refer to the control unit's manual for software update instructions.
LED Status
The main board (AA1) has status LEDs for easy control and troubleshooting.
| LED | Reference | Status | Explanation |
|---|---|---|---|
| DL1 (green) | PWR | Off | Main board without power |
| Solid light | Main board with power | ||
| DL2 (green) | CPU | Off | CPU without power |
| Blinking | CPU operating | ||
| Solid light | CPU not functioning correctly | ||
| DL3 (green) | COM | Off | No communication with control unit |
| Blinking | Communication with control unit | ||
| DL4 (green) | DEFROST/PROTECTIONS | Off | Neither defrosting nor protection is active |
| Blinking | Partial protection active | ||
| DL5 (green) | ERR | Solid light | Defrosting active |
| Off | No error | ||
| Blinking | Info alarm (temporary), active | ||
| Solid light | Permanent alarm, active |
Master Control
Control of the unit requires a control unit that calls the heat pump as needed. All settings for the heat pump are made via the control unit. Status and sensor values from the heat pump are also displayed.
Please refer to the control unit's instructions.
8. Service
Service Measures
HINWEIS! Any service may only be performed by qualified personnel. Only original spare parts may be used when replacing components.
Condenser Drainage
In case of prolonged power outages or similar events, the water from the condenser may need to be drained.
HINWEIS! Hot water may escape during drainage of the heating/cooling system. There is a risk of scalding.
- Close the shut-off valves.
- Disconnect both heating connections (XL1 outlet, XL2 inlet) and allow the water to drain.
Sensor Data
Tables provide resistance values (kOhm) for various temperature sensors at different temperatures.
- Return (BT3), Condenser flow (BT12), Liquid line (BT15), Hot gas sensor (BT14), Evaporator sensor (BT16_1/BT16_2), Suction gas sensor (BT17), and Suction gas sensor, Evaporator (BT85)
- Ambient temperature sensor (BT28)
9. Comfort Faults
The control unit typically detects operational faults and displays them as alarms with recommended actions. If a fault is not displayed, the following troubleshooting steps may be helpful.
Troubleshooting
HINWEIS! When troubleshooting faults requiring removal of screwed covers, the power supply must be interrupted at the safety switch by a qualified installer.
ACHTUNG! Alarm confirmation is done on the control unit.
ACHTUNG! Domestic water settings are always made on the control unit.
Basic Measures
Check the following:
- The heat pump's power supply cable is connected.
- Building's main and group fuses.
- Building's residual current device (RCD).
- Heat pump fuse / circuit breaker (if KVR is installed).
- Control unit fuses.
- Control unit safety temperature limiter.
- Ensure the heat pump's air flow is not blocked by foreign objects.
- Ensure the heat pump has no external damage.
Heat Pump Does Not Start
- No demand.
- The control unit is not requesting heating, cooling, or domestic hot water.
- Compressor blocked due to temperature conditions. Wait for the temperature to be within the operating range.
- Minimum time between compressor starts not yet reached. Wait at least 30 minutes and check if the compressor starts.
- Alarm triggered. Follow the on-screen instructions.
Heat Pump Has No Communication
- Check if the heat pump's addressing is correct.
- Ensure the communication cable is correctly connected and functional.
Domestic Hot Water with Low Temperature or No Hot Water
- High domestic hot water demand. Wait for the domestic hot water to reheat.
- Incorrect domestic hot water settings in the control unit. Refer to the control unit's installer manual.
- Clogged dirt filter. Turn off the system, check, and clean the dirt filter.
Low Room Temperature
- Closed thermostats in multiple rooms. Set thermostats to maximum in as many rooms as possible.
- Incorrect settings in the control unit. Refer to the control unit's installer manual.
- Air in radiators / underfloor heating. Vent the system.
High Room Temperature
- Incorrect settings in the control unit. Refer to the control unit's installer manual.
Large Water Volume Under the Heat Pump
- KVR accessory required. If KVR is installed, check for unimpeded water drainage.
10. Accessories
Condensate Pipe
Condensate pipes, various lengths KVR. Detailed information on accessories and a complete list can be found on the website. Not all accessories are available in all markets.
11. Technical Data
Tables and diagrams provide detailed technical specifications for the ANGHP06S, ANGHP08S, and ANGHP12S models, including dimensions, electrical data, refrigerant circuit details, operating ranges, and performance data.
Energy Consumption Label Information
Details on energy efficiency class, heating performance, and seasonal efficiency for different climate conditions are provided.
Technical Parameters
Detailed technical parameters for each model (ANGHP06, ANGHP08, ANGHP12) are listed, including heat pump type, operating temperature ranges, performance data, electrical consumption, and refrigerant details.
