🔥 Bowman EC100-5113-2T 50kW (170,000 BTU) Titanium Swimming Pool Heat Exchanger

🌡️ Premium British-Engineered Heat Transfer with 10-Year Titanium Guarantee – The Ultimate Corrosion-Resistant Solution for Any Pool Water Type

📋 Product Overview

The Bowman EC100-5113-2T is a high-performance titanium swimming pool heat exchanger, delivering 50kW (170,000 BTU/h) of heat transfer capacity when paired with an 82°C boiler water supply. Manufactured in Birmingham, UK by E.J. Bowman – a company with over 100 years of heat transfer expertise – this unit represents the pinnacle of pool heating technology.

The titanium tube stack construction makes this heat exchanger the ultimate “fit and forget” solution, capable of withstanding attack from all known pool chemicals including salt water chlorinators. Unlike stainless steel alternatives, titanium eliminates the possibility of galvanic reaction between dissimilar materials – a major cause of premature heat exchanger failure.

Designed for pools up to 90,000 litres (20,000 gallons), the EC100-5113-2T features Universal Fit composite end covers with integrated thermostat pocket and socket unions for straightforward installation into standard pool pipework. Whether you’re heating a domestic pool, spa, or light commercial installation, this heat exchanger delivers exceptional performance, durability, and peace of mind.

⭐ Key Features

✅ 50kW / 170,000 BTU Heat Output – High-capacity heat transfer when used with 82°C boiler water (30kW / 102,000 BTU at 60°C)

✅ Titanium Tube Stack with 10-Year Guarantee – Ultimate corrosion resistance suitable for all pool water types including salt chlorinated systems

✅ Universal Fit Composite End Covers – Accommodates both metric 50mm (DN40) and imperial 1½” NPS pipework

✅ Integrated 7mm Thermostat Pocket – Enables precise temperature monitoring and control at the pool water inlet

✅ Solvent Weld Socket Unions – Easy, leak-free connection directly into pool pipework

✅ Flexible Mounting Options – Install vertically or horizontally to suit your plant room layout

✅ Compatible with Multiple Heat Sources – Works with boilers, solar thermal systems, and heat pumps

✅ Counter-Flow Design – Optimised heat transfer efficiency with pool water flowing opposite to heating water

✅ Maximum 6 Bar Operating Pressure – Robust construction for reliable, long-term operation

✅ Lightweight 4.0kg Design – Easy handling and installation

🔧 Technical Specifications

Specification	Details
Model Number	EC100-5113-2T
Heat Output (82°C Boiler Water)	50 kW / 170,000 BTU/h
Heat Output (60°C Boiler Water)	30 kW / 102,000 BTU/h
Shell Material	Cast Iron Body
Tube Stack Material	Titanium
End Cover Material	Composite (Universal Fit)
Maximum Pool Volume	90 m³ / 20,000 gallons
Boiler/Primary Water Flow	3.0 m³/h (50 l/min)
Maximum Pool Water Flow	12.0 m³/h (200 l/min)
Max Operating Pressure (Both Sides)	6 bar
Max Operating Temperature (Heating Side)	110°C
Max Operating Temperature (Pool Side)	100°C
Pool Water Connections	Solvent Weld Ø48mm/Ø50mm (DN40 Pipe)
Boiler Water Connections	Threaded ¾” BSP
Thermostat Pocket	Ø7mm x 40mm depth (Inlet End)
Overall Length	456 mm
Shell Diameter	86 mm
Weight (Dry)	4.0 kg
Mounting	Vertical or Horizontal
Standards Compliance	European and British Standards
Warranty	12 months standard; 10 years on titanium tube stack

📊 Heat Transfer Performance

The Bowman EC100-5113-2T delivers variable heat output depending on your heat source temperature, providing flexibility across different heating system configurations.

🏊 Pool Heating Capacity:

• Heat Output at 82°C Boiler Water: 50 kW (170,000 BTU/h)
• Heat Output at 60°C Boiler Water: 30 kW (102,000 BTU/h)
• Suitable for pools up to: 90,000 litres (20,000 gallons)
• Performance based on: Achieving 30°C pool water temperature

⚡ Efficiency Factors:

• Counter-flow installation is essential – pool water must flow opposite to heating water for optimal heat transfer
• Titanium construction allows higher flow rates than other materials, potentially enabling a smaller unit to be used
• Boiler water flow rate of 3.0 m³/h (50 l/min) required for rated performance
• Maximum pool water flow of 12.0 m³/h (200 l/min) must not be exceeded

💧 Temperature Differential Impact:

The heat exchanger’s output is directly related to the temperature difference between the heat source and pool water. Higher boiler temperatures deliver greater heat transfer rates, while lower temperature sources (such as heat pumps) will reduce output accordingly.

⏱️ Heat-Up Times & Temperature Maintenance

⚠️ Heat-up times vary based on multiple factors including:

• Heat source output (boiler/heat pump kW rating)
• Starting water temperature
• Target water temperature
• Pool cover usage (reduces heat loss significantly)
• Ambient/outdoor temperature
• Weather conditions and wind exposure
• Pool insulation quality

The manufacturer documentation confirms this unit is rated for pools up to 90,000 litres when paired with an appropriately sized heat source delivering 82°C water at the specified flow rate. Actual heating times depend entirely on your specific installation configuration.

ℹ️ Note: Heat exchangers are passive devices – they transfer heat from your boiler or heat pump to your pool water. The heating time is primarily determined by your heat source capacity, not the heat exchanger itself. Proper sizing of both components is essential for optimal performance.

🛡️ Material & Compatibility Guide

Why Titanium?

Titanium is the ultimate material choice for swimming pool heat exchangers, offering unmatched durability and compatibility:

✅ Salt Water Pools – Fully compatible with salt water chlorinators and saline pools

✅ Chlorinated Pools – Withstands all standard pool chemical treatments

✅ Maximum Corrosion Resistance – Resists attack from aggressive chemicals indefinitely

✅ No Galvanic Reaction – Eliminates the major cause of tube stack corrosion that affects dissimilar metal combinations

✅ 10-Year Tube Stack Guarantee – Bowman guarantees all titanium material in contact with pool water for a full decade

✅ Higher Flow Rate Capability – Titanium units can operate at higher flow rates than cupro-nickel or stainless steel alternatives

Chemical Limits for Titanium Heat Exchangers

Parameter	Acceptable Range
Free Chlorine	Up to 15.0 ppm max
pH	6.8 – 8.0
Calcium Hardness	200 – 1,000 ppm
Alkalinity	100 – 150 ppm
Bromine	Up to 15.0 ppm max
Chloride	Less than 3,000 ppm

⚠️ Important: Stainless steel heat exchangers should NOT be used with salt water chlorinators or salt water pools. If you have a saline pool, titanium is the correct choice.

🎯 Applications & Use Cases

🏊‍♂️ Residential Swimming Pools – Ideal for domestic pools up to 90,000 litres requiring reliable, efficient heating with maximum corrosion protection

🛁 Hot Tubs & Spas – Perfect for spa installations where salt or high chemical concentrations demand titanium construction

🏢 Light Commercial Installations – Suitable for small hotel pools, holiday lets, and leisure facilities

☀️ Solar Thermal Integration – Compatible with solar panel systems for eco-friendly pool heating (reduced output at lower temperatures)

🔥 Boiler Connection – Optimised for use with conventional gas, oil, or biomass boilers delivering 60-82°C water

♨️ Heat Pump Systems – Works with air source and ground source heat pumps (output varies with source temperature)

🌊 Salt Water & Chlorinated Pools – Titanium construction handles any pool water chemistry without degradation

🔨 Installation Considerations

Mounting Options

The EC100-5113-2T can be installed vertically or horizontally, providing flexibility to suit your plant room configuration. Ensure adequate access is maintained for future maintenance and tube stack inspection.

Critical Installation Requirements

⚠️ Counter-Flow Installation Essential – The heat exchanger MUST be installed so pool water flows in the opposite direction to the heating water. Failure to install in counter-flow will significantly reduce performance.

⚠️ Thermostat Positioning – The integral thermostat pocket is located on the inlet end only. Install the temperature sensor at the pool water inlet to ensure accurate monitoring.

⚠️ Chemical Dosing – Automatic dosing systems must be fitted DOWNSTREAM from the heat exchanger, incorporating a non-return valve. Chemicals must never be dosed directly into the heat exchanger.

⚠️ Flow Rates – The maximum pool water flow of 12.0 m³/h (200 l/min) must not be exceeded. A bypass valve can be used to regulate flow if necessary.

Connection Details

• Pool Water: Solvent weld socket unions for Ø48mm or Ø50mm (DN40) pipework – Universal Fit end covers accommodate both metric and imperial pipe sizes
• Boiler Water: ¾” BSP threaded connections

Professional Installation Recommended

For warranty compliance and optimal performance, we recommend installation by a qualified heating engineer or pool specialist. The heat exchanger should be installed downstream of the pump and filtration equipment, with isolation valves fitted on all connections for future maintenance access.

 Downloads & Resources

 Swimming Pool Heat Exchanger Brochure – Complete product range specifications and performance data (PDF)

 Installation, Operation & Maintenance Guide – Full technical installation instructions and maintenance procedures (PDF)

🏆 Why Choose Bowman Heat Exchangers

✅ 100+ Years of Heat Transfer Expertise – E.J. Bowman has manufactured heat exchangers in Birmingham, UK since the early 1900s

✅ Industry-Leading Titanium Guarantee – Full 10-year warranty on all titanium material in contact with pool water

✅ Tens of Thousands Installed Worldwide – Proven reliability from domestic spas to Olympic swimming pools

✅ Superior Heat Transfer Design – More heat transfer tubes than most competitors, heating pools up to three times faster

✅ British Manufacturing Quality – Designed and built to European and British standards

✅ Easy Maintenance – Removable tube stack and end covers make cleaning and servicing straightforward

✅ Universal Compatibility – Works with boilers, solar panels, heat pumps, and chiller systems

🛍️ Why Buy from Parts4Tubs

✅ UK-Based Pool & Spa Specialists – Expert knowledge of swimming pool heating systems

✅ Genuine Bowman Products – Authorised stockist with full manufacturer warranty support

✅ Technical Advice Available – Help with sizing, compatibility, and installation queries

✅ Fast UK Delivery – Quick dispatch to get your pool heating project underway

✅ Competitive Pricing – Great value on premium heat exchanger products

✅ After-Sales Support – Ongoing assistance with spare parts and maintenance guidance

✨ Summary

The Bowman EC100-5113-2T represents the gold standard in swimming pool heat exchangers. With its titanium tube stack backed by a 10-year guarantee, 50kW heat transfer capacity, and compatibility with any pool water chemistry, this British-manufactured unit delivers the performance, durability, and peace of mind that serious pool owners demand. Whether you’re heating a saltwater pool, spa, or chlorinated swimming pool, the EC100-5113-2T is the ultimate “fit and forget” solution from the world’s leading pool heat exchanger manufacturer.