Duratech Sun Spring Swimming Pool Heat Pump Manual

4.1 Typical Configuration

The heat pump and connection kit are supplied by the factory. The user or installer must provide other components, such as a bypass. The heat pump should be located within 2 meters (recommended) of the pool to minimize heat loss. Ensure proper water treatment and connections.

Diagram: A diagram shows the typical setup with the heat pump, bypass valve (recommended), pool pump, filter, and water connections.

4.2 Water Connection Kit

The kit includes 6 pieces for connecting water hoses. Pieces 1 and 2 are primary. Pieces 3-6 are interchangeable, allowing for four connection options: threaded connection (using pieces 1 & 2), clamp connection (using pieces 1, 2, & 3), and glued connections (using pieces 1, 2, & 5 for 50mm metric, or 1, 2, & 6 for 48mm imperial).

Diagram: Illustrations show the different connection kit components and how they assemble for threaded, clamp, and glued connections.

4.3 Hose Installation

Position the heat pump 2 meters (recommended) from the pool. Use appropriate hoses for the chosen connections. Hoses can be glued, clamped, or screwed. Use PVC hoses suitable for swimming pools and appropriate glue.

4.4 Electrical Wiring

Verify that the mains voltage matches the unit's operating voltage. A timer can be installed between the heat pump and the circulation pump for automatic operation. The heat pump has memory to retain settings after power interruptions. Ensure proper grounding for safety. Test the RCD before use by pressing RESET (ON) and then TEST (OFF), followed by RESET again.

Diagram: A diagram illustrates the electrical connections, including power supply, transformer, fuse, and connections to the compressor and fan.

5.1 Heat Loss

Longer pipe runs increase heat loss. Placing the pump close to the pool is recommended. Heating time depends on initial water temperature, ambient temperature, and pool volume. Pool covers and insulated piping reduce heating time.

5.2 Condensation

Condensation forms on the evaporator fins when the air is cooled. This can result in several liters of water per hour in high humidity. The water drains through the bottom of the unit. To test if water is condensation, turn off the unit while the pool pump runs; if water stops draining, it's condensation. Alternatively, test for chlorine in the drain water; absence of chlorine indicates condensation. Ensure the drain is not blocked.

5.3 Unobstructed Space

Maintain an unobstructed space around the heat pump for fresh air intake through the evaporator. Do not block the fan. Recommended clearances: 500mm for air intake, 1000mm for connection area, and 3000mm for air outlet.

Diagram: A diagram illustrates the required clearances around the heat pump for air intake and outlet.

5.4 Compressor Time Delay

The heat pump has a 3-minute semiconductor restart delay after the compressor is turned off and a 1-minute semiconductor run-time delay. These delays protect control circuit components and prevent short-cycling. The unit will automatically restart approximately 3 minutes after a control circuit interruption or a 1-minute compressor run time. Power interruptions during the delay will reset the timer.

6.1 Before Use

Use the arrow buttons to set the desired temperature. The setting is automatically saved. To switch between °C and °F:

1. Press UP and DOWN simultaneously to enter the parameter menu.
2. Navigate to the Fahrenheit parameter (P02) using UP/DOWN buttons.
3. Press ON/OFF to enter parameter setting mode.
4. Set the parameter to 1 for °F (default is 0 for °C).
5. Press ON/OFF to exit parameter setting mode.
6. Press UP and DOWN simultaneously to exit the parameter menu.

6.2 First Commissioning

Follow these steps for initial startup:

1. Turn on the pool filtration pump. Check for water leaks.
2. Plug in the power cord and turn on the heat pump. The unit will start after the time delay (see 5.4).
3. After a few minutes, check if the exhausted air is cooler.
4. Allow the unit and pool pump to run 24 hours a day until the desired pool water temperature is reached (+0.5°C). The unit will stop heating when the set temperature is reached and restart when the temperature drops by 0.5°C.

6.3 General Interface

The heat pump can be turned ON/OFF using the ON/OFF button. In OFF mode, the display shows 'OFF', desired heating temperature, and any error messages. In ON mode, it shows desired heating temperature, pool water temperature, 'Heating' status, and a water flow graphic. The green zone on the flow graphic indicates optimal performance. The flow graphic is valid after 15 minutes of operation.

Diagram: The display interface is shown, illustrating temperature readings, status indicators (Heating, Defrosting), and the flow bar.

6.4 Parameter Interface

Press UP & DOWN simultaneously to access the parameter interface. Qualified personnel can adjust parameters for optimal efficiency. Parameters include sensor settings and user-adjustable values.

Diagram: The parameter interface is shown, with buttons for UP, DOWN, and ON/OFF, and indicators for parameter name, value, and status.

6.5 List of Parameters

This table lists adjustable parameters (P1-P12) with their factory settings, minimum, maximum values, and descriptions. It also includes parameters for ambient temperature (TA), water inlet temperature (TIN), liquid line temperature (TLI), and evaporator temperature (TE).

*Valid only from software version 3 (P1=minimum 3).

SET on the screen appears in the parameter menu when parameters can be modified.

6.6 Error Interface

When a problem is detected, the heat pump attempts to resolve it. An error message appears if the program cannot resolve the issue. The heat pump stops operating and can only be restarted by disconnecting the RCD. If the error persists, contact a service center.

Diagram: The error interface shows 'Err' and an error code (e.g., E01). Buttons UP, DOWN, and ON/OFF are used to navigate and view errors.

6.7 Error Parameter Interface

Pressing UP & DOWN simultaneously enters the error parameter interface, indicating specific errors that have occurred. A complete list of errors is in section 6.8.

Diagram: The error parameter interface displays error codes (e.g., E01) and corresponding error notifications (e.g., EA for ambient temperature sensor error).

6.8 List of Errors

This table details error codes (E01-E04), their descriptions (e.g., ambient temperature sensor error, water inlet temperature sensor error, liquid line temperature sensor error, evaporator temperature sensor error), and the effect/action taken by the heat pump, which typically involves shutting down and requiring an RCD reset.

6.9 Troubleshooting Guide

Incorrect installation can lead to electrical hazards. If the heat pump is not working or heating is insufficient, check for power, ensure the unit is on, verify temperature settings, wait for the compressor delay, check ambient temperature, and review error messages. Obstructions to airflow or frost on the evaporator can cause insufficient heating.

• Problem: Heat pump not working.
• Causes: No electricity, unit not turned on, incorrect temperature setting, compressor time delay active, low ambient temperature, other errors.
• Solutions: Check power, turn on unit, adjust temperature, wait for delay, wait for temperature to rise, or consult error messages.
• Problem: Insufficient heating.
• Causes: Obstructions blocking airflow, frost on evaporator.
• Solutions: Remove obstructions, allow unit to defrost.

Safety Warnings: Do not attempt internal adjustments. Keep hands and hair away from fan blades. Consult a professional before attempting to operate or maintain the pool system. Read the entire installation and operation guide before use. Do not start the heat pump for 24 hours after installation to prevent compressor damage. Turn off power before servicing.

7.1 Sun Spring Cable Control Interface Diagram

This diagram shows the electrical connections for the heat pump's control interface, including power supply, transformer, fuses, and connections to various sensors and components like the compressor and fan.

Diagram: A detailed wiring diagram of the control board.

7.3 Sun Spring Piping Diagram Description

This diagram illustrates the refrigeration circuit of the heat pump, showing the compressor, evaporator, condenser, TEVAP, CAPILLARY, STRAINER, and water flow.

Diagram: A schematic of the heat pump's internal piping and refrigeration components.

8.1 Water Chemistry

Maintain proper pool water chemistry for optimal performance and to prevent damage. Recommended levels are: pH 7.0-7.8, Free Chlorine 0.5-1.5 mg/L, Salt (if applicable) up to 8 g/L. Failure to maintain these levels voids the warranty. Install water treatment equipment downstream of the heat pump.

Warning: Improper water chemistry can cause irreversible damage. Install chemical feeders downstream of the heat pump.

Option 1: Indoor Storage

Store the heat pump indoors in a garage or shed. Cut power at the main breaker, close water supply, disconnect water hoses, and drain the unit.

Option 2: Outdoor Storage

While protected against frost, it's recommended to drain the entire system. Use a breathable cover to prevent moisture buildup. Follow the same draining steps as Option 1 and reconnect hoses loosely to prevent debris entry.

Failure to prepare the unit for winter can result in damage and void the warranty.

9.1 Spring Start-up

Inspect the system for debris or damage. Securely connect water inlet and outlet. Turn on the pool filtration pump to supply water. Restore power to the heat pump and turn it on.