aQuaviva SP-55K-S Stainless Steel Pool Spa Heat Exchangers Instruction Manual

June 15, 2024
Aquaviva

aQuaviva SP-55K-S Stainless Steel Pool Spa Heat Exchangers Instruction

Manual

Product Information

Thank you for purchasing our Stainless Steel Pool & Spa Heat Exchanger, our heat exchanger is fully constructed with stainless steel 316L shell and stainless steel 316L corrugated inner tubes this ensures high velocities inside the unit making Stainless Steel Pool & Spa Heat Exchanger a very reliable, efficient and cost-effective way to transfer heat indirectly between any boiler circuit and any pool or spa circuit, besides other application. We have a large range of heat exchangers well suited from small spa up to Olympic size pools, our units are rated from 16kW(55,000 Btu/H) to up to 1,320kW(4,500,000 Btu/H.

Please contact your nearest sales representative to assist you with the sizing of each application.

Mounting

The method of mounting used is the total responsibility of the installer. The units are designed for both horizontal and vertical mounting, it is recommended to always install the unit with a mounting bracket fixed to a wall, and/or ceiling or floor to prevent hammer heads or vibrations which could damage the unit, the use of expansion joints on the boiler circuit is recommended.aQuaviva-SP-55K-S-Stainless-Steel-Pool-Spa-Heat-Exchangers-
Instruction-Manual-fig- \(2\)

Installation Instructions

Important: Always install the Stainless Steel Pool & Spa Heat Exchanger in a counter flow pattern, as shown in the following figure.aQuaviva-SP-
55K-S-Stainless-Steel-Pool-Spa-Heat-Exchangers-Instruction-Manual-fig-
\(3\)

Stainless Steel Pool & Spa Heat Exchangers should be installed downstream of the filtration and pumping equipment. The boiler water must be assisted and the usual precautions taken to prevent air locks. The pool water pump should be controlled by a thermostat in the pool pipe work before the heat exchanger and set at the required temperature.

Specifications:
  • Model: Aquaviva Twist
  • Material: 316L stainless steel
  • Power Range: 16 kW – 1320 kW
  • Temperature Range: -8°C to 208°C

Product Usage Instructions

Installation:
Depending on your specific application, contact your nearest sales representative for assistance in selecting the right size.

Horizontal Installation:
Follow the instructions below to install the product horizontally:

  1. Ensure that the direction of water flow is correct. The water should flow from the boiler to the pool.
  2. Connect the water inlet from the boiler to the product’s housing.
  3. Connect the water outlet from the pool to the product’s housing.

Vertical Installation:

Follow the instructions below to install the product vertically:

  1. Ensure that the direction of water flow is correct. The water should flow from the bottom to the top.
  2. Connect the water inlet from the boiler to the product’s housing.
  3. Connect the water outlet from the pool to the product’s housing.
Operation:

It is important to follow these instructions to prevent corrosion or erosion of the stainless steel heat exchanger in your pool and spa:

  1. Operation the unit under the following design parameters Shell/tube side pressure: 1.3MPa(190PSI) Shell/tube side temperature: -8°C(-19°F)—208°C(406°F)
  2. Install the unit before the chlorination device.
  3. Start-Up:
  4. Valves should be opened gradually to achieve a steady increase in flow and pressure into the unit;
  5. The cold(heated) fluid should first enter into the system;
  6. The hot(heating) fluid, water, or steam, should be gradually brought into the system;
  7. Check all connections for leaks.
  8. Shut-Down: Shut down the hot fluid side first, then the cold fluid side.
  9. Always keep PH within the correct levels. The ideal pool pH should be kept between 7.4 to 7.6, it is really extremely important to avoid pH falling below 7.2 or above 7.8, you must check on a daily basis. Modify your pool condition if necessary.
  10. You must ensure that the chlorine levels are in the range recommended by your pool chemicals supplier and they are aligned to your specific needs.
  11. If you have installed a bypass fitted to the heat exchanger circuit, it is important that any valve is correctly positioned to allow the recommended pool water flow to pass through the heat exchanger unit.
  12. The filter should be checked regularly, especially sand filters, this type of filtration if working improperly will allow sand to pass around the pool circuit causing erosion of the heat exchanger and other components of the system as well.
  13. It is of main importance that the correct chlorine dosage is added to the pool. To allow proper dispersion of this chemical into the pool, distribute evenly in the different areas of it, do not do it in one area only as this will create highly acidic areas which can cause irreversible damage to the heat exchanger.
  14. Keep the pool free from leaves and other debris, all organic matter can decay an increase the pool’s pH causing damage to the unit.
  15. It is important to winterize properly if the pool is exposed to winter conditions, we recommended fully draining down the heat exchanger or removing it completely from the installation through the duration of the shutdown period, otherwise icing of the unit would damage the heat exchanger for good.
  16. Always choose harmless cleaning liquids if needed and clean carefully.
  17. Stainless Steel Pool and spa Heat Exchangers are not suited for saline or seawater environments.
  18. The chlorinator should be in optimal working conditions.

Specifications of Stainless Steel Pool & Spa Heat ExchangersaQuaviva-SP-
55K-S-Stainless-Steel-Pool-Spa-Heat-Exchangers-Instruction-Manual-fig-
\(4\)

Note: Units with the same side shell connections are available .aQuaviva-SP-55K-S-Stainless-Steel-Pool-Spa-Heat-Exchangers-Instruction-
Manual-fig- \(5\)

Quick Selection of Stainless Steel Pool & Spa Heat ExchangersaQuaviva-SP-
55K-S-Stainless-Steel-Pool-Spa-Heat-Exchangers-Instruction-Manual-fig-
\(6\)

Note:

  1. For occasional (holidays & weekends) use pools we recommend a 2x output multiplier to obtain a 2°F/hr(2°C/hr) heat up rate;
  2. Nominal values are based on 60°C temperature between incoming heating and heated water.

WARNING
The following fluids are prohibited for use as a flushing agent for stainless steel pool & spa heat exchangers;

  1. Hydrochloric acid up to 0.1% concentration
  2. Solutions that contain MCl
  3. Chlorides (MgCl2, NaCl between 0.01-1%, CuCl up to 1%, CaCl2 from 5% to saturation)
  4. Any fluid that will deposit alkaline residue or phosphorous

IMPORTANT!!!
IT IS THE PURCHASER’S RESPONSIBILITY TO ENSURE THAT ALL FLUIDS IN CONTACT WITH THE PRODUCTS ARE COMPATIBLE WITH THE CONSTRUCTION MATERIAL OF THE PRODUCT. THIS INCLUDES OPERATIONAL FLUIDS AND CLEANING FLUIDS. CORROSIVE ENVIRONMENTS ARE OFTEN A COMBINATION OF CHEMICAL LEVELS, FLOW RATES, AND TEMPERATURES. FAILURE TO ENSURE THIS WILL RESULT IN DAMAGES TO THE PRODUCT.
IF ANY OF THE PREVIOUS CONDITIONS IS NOT FULLY COMPLIED THE WARRANTY OF THIS UNIT IS VOID.

Technical or commercial considerations may, from time to time to alter the design, performance, and dimensions of the equipment, and the right is reserved to make such changes without previous notice.

FAQ

Q: What are the technical specifications of the Aquaviva Twist?
The technical specifications of the Aquaviva Twist are as follows:

Model A (mm) B (mm) C D
AVT-16 60 360 3/4 1
AVT-25-304/316 60 520 3/4 1
AVT-45-304/316 76 450 1 1 1/2
AVT-61-304/316 76 570 1 1/2 1 1/2
AVT-88-304/316 76 780 1 1/2 2
AVT-105-304/316 89 830 1 1/2 2
AVT-175-304/316 114 900 2 2 1/2
AVT-352-316 133 900 2 2 1/2
AVT-704-316 168 950 2 4
AVT-880-316 168 1100 2 1/2 4
AVT-1056-316 168 1300 2 1/2 4
AVT-1320-316 219 1070 2 1/2 4
AVT-1467-316 219 1120 2 1/2 4
AVT-1760-316 219 1220 2 1/2 4

Q: What is the power range of the Aquaviva Twist?
The power range of the Aquaviva Twist varies from 16 kW to 1320 kW.

Q: What is the temperature range of the Aquaviva Twist?
The Aquaviva Twist can operate within a temperature range of -8°C to 208°C.

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