🔥 Bowman EC100 Titanium Heat Exchanger – 50kW (170,000 BTU)

🌡️ Premium British-Engineered Pool Heating with Ultimate Corrosion Resistance & 10-Year Titanium Guarantee

📋 Product Overview

The Bowman EC100-5113-2T Titanium Heat Exchanger delivers 50kW (170,000 BTU/hr) of efficient heat transfer, making it an ideal mid-range solution for medium-sized residential and light commercial pools. Manufactured in Birmingham, UK by EJ Bowman – leaders in heat transfer technology for over 100 years – this unit combines substantial heating capacity with the superior durability of a titanium tubestack.

Titanium construction provides unmatched resistance to all known pool chemicals, including aggressive salt water and chlorinated environments. Unlike stainless steel alternatives, titanium eliminates the possibility of galvanic reaction between dissimilar materials – a major cause of premature heat exchanger failure. The result is a true “fit and forget” solution backed by Bowman’s industry-leading 10-year guarantee on all titanium components in contact with pool water.

Designed for pools up to 90,000 litres (20,000 gallons), this heat exchanger works seamlessly with boilers, heat pumps, and solar thermal systems to deliver faster heat-up times while reducing energy consumption and costs.

⭐ Key Features

✅ Powerful 50kW (170,000 BTU/hr) heat output at 82°C boiler water temperature – heats pools up to three times faster than competitor units

✅ Premium titanium tubestack with full 10-year manufacturer guarantee – the ultimate corrosion-resistant material

✅ Universal water compatibility – suitable for salt water pools, salt water chlorinators, chlorinated pools, and all pool chemical systems

✅ Higher flow rate capability than cupro-nickel or stainless steel alternatives – titanium operates at up to 200 l/min pool water flow

✅ Universal Fit end covers with composite construction for easy solvent weld installation to Ø48mm or Ø50mm pool pipework

✅ Integral 7mm thermostat pocket at inlet end for accurate pool water temperature monitoring

✅ Compact, lightweight design at only 4.0kg – flexible horizontal or vertical mounting options

✅ Easy maintenance access with removable tubestack and end covers for straightforward cleaning

✅ Counter-flow design optimises heat transfer efficiency between heating circuit and pool water

✅ British manufacturing quality – designed and built by EJ Bowman in Birmingham, UK

🔧 Technical Specifications

Specification	Details
Model Number	EC100-5113-2T
Heat Output (82°C Boiler Water)	50 kW / 170,000 BTU/hr
Heat Output (60°C Boiler Water)	30 kW / 102,000 BTU/hr
Shell Material	Cast Iron with Composite End Covers
Tube Material	Titanium
Maximum Pool Volume	90,000 litres / 20,000 gallons
Boiler/Primary Flow Rate	3.0 m³/h (50 l/min)
Maximum Pool Water Flow Rate	12.0 m³/h (200 l/min)
Max Operating Pressure (Both Sides)	6 bar
Max Heating Water Temperature	110°C
Max Pool Water Temperature	100°C
Primary Connections (Boiler/Solar)	3/4″ BSP Threaded
Secondary Connections (Pool Water)	Solvent Weld Ø48/Ø50mm (DN40 Pipe)
Overall Length	456mm
Shell Diameter	86mm
Mounting Hole Centres	140mm
Thermostat Pocket	Ø7 x 40mm (Inlet End)
Weight (Dry)	4.0 kg
Warranty	12 months (unit) / 10 years (titanium tubestack)

📊 Heat Transfer Performance

🏊 Pool Heating Capacity

The EC100-5113-2T delivers variable heat output depending on your heat source temperature:

Heat Source Temperature	Heat Output	Suitable Pool Volume
82°C (Boiler)	50 kW (170,000 BTU/hr)	Up to 90,000 litres (20,000 gal)
60°C (Boiler/Heat Pump)	30 kW (102,000 BTU/hr)	Up to 90,000 litres (20,000 gal)

Performance figures based on achieving a pool water temperature of 30°C (Source: Bowman Swimming Pool Heat Exchanger Brochure Issue F21)

⚡ Efficiency Factors

The titanium tubestack design enables higher pool water flow rates (up to 200 l/min) compared to other materials, delivering enhanced heat transfer performance. Key factors affecting efficiency include:

• Boiler/heat source water temperature – higher temperatures deliver greater heat output
• Flow rate optimisation – maintaining recommended flow rates maximises heat transfer
• Counter-flow installation – essential for optimal performance (pool water flows opposite to heating water)
• Proper sizing – matching heat exchanger capacity to pool volume and heat source output

⏱️ Heat-Up Times & Temperature Maintenance

⚠️ Important: Heat-up times vary significantly 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 by up to 75%)
• Ambient/outdoor temperature
• Weather conditions and wind exposure
• Pool insulation quality

The manufacturer states that Bowman units can heat pools “up to three times faster” than competitor products due to their higher tube count and superior heat transfer design.

ℹ️ Note: Specific heat-up time calculations require knowledge of your complete system configuration. For accurate calculations tailored to your installation, please contact our technical team or use industry-standard pool heating calculators with your specific parameters.

🛡️ Material & Compatibility Guide

Why Titanium?

Titanium is the ultimate material choice for swimming pool heat exchangers. Here’s why:

✅ Complete chemical resistance – withstands attack from all known pool chemicals indefinitely

✅ Salt water compatible – ideal for salt water pools and salt water chlorinator systems

✅ No galvanic corrosion – eliminates the electrochemical reaction between dissimilar metals that causes premature failure

✅ Higher flow rates – titanium’s durability allows operation at higher flow rates than other materials

✅ 10-year guarantee – Bowman backs every titanium tubestack with a full decade of warranty protection

Water Chemistry Guidelines

For optimal performance and longevity, maintain these water parameters:

Parameter	Recommended Range
Free Chlorine	Up to 15.0 ppm max
pH Level	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

Source: Bowman Installation, Operation & Maintenance Guide Issue L21

Material Comparison

Feature	Titanium	Cupro-Nickel	Stainless Steel
Salt Water Pools	✅ Yes	✅ Yes	❌ No
Salt Chlorinators	✅ Yes	✅ Yes	❌ No
Chlorinated Pools	✅ Yes	✅ Yes	✅ Yes
Freshwater Pools	✅ Yes	✅ Yes	✅ Yes
Corrosion Resistance	Excellent	Very Good	Good
Galvanic Protection	✅ Complete	⚠️ Partial	⚠️ Partial
Warranty	10 Years	12 Months	12 Months

🎯 Applications & Use Cases

The Bowman EC100-5113-2T is ideally suited for:

🏊‍♂️ Medium-Sized Swimming Pools – residential pools up to 90,000 litres requiring reliable, efficient heating

🌊 Salt Water Pools – titanium construction handles aggressive salt water environments without degradation

🛁 Hot Tubs & Swim Spas – powerful enough for rapid heat-up of smaller high-temperature applications

🏢 Light Commercial Installations – holiday lets, small hotels, therapy pools, and wellness centres

🔥 Boiler-Connected Systems – designed for use with gas, oil, LPG, and biomass boilers up to 82°C flow temperature

♨️ Heat Pump Integration – excellent performance with air source and ground source heat pumps at 60°C

☀️ Solar Thermal Systems – compatible with solar panel installations for eco-friendly pool heating

💊 Therapy & Hydrotherapy Pools – ideal for facilities requiring precise temperature control and chemical resistance

🔨 Installation Considerations

Mounting Options

The EC100-5113-2T can be installed:

• Horizontally – most common orientation
• Vertically – where space is limited

Connection Requirements

Connection Type	Specification
Pool Water (Secondary)	Solvent weld to Ø48mm or Ø50mm pipe (DN40)
Boiler/Solar Water (Primary)	3/4″ BSP threaded connections

The Universal Fit end covers accommodate both metric 50mm and imperial 1½” NPS pool pipework, simplifying installation.

Critical Installation Points

⚠️ Counter-flow installation is essential – pool water must flow in the opposite direction to heating water for optimal heat transfer

⚠️ Chemical dosing systems must be installed DOWNSTREAM of the heat exchanger with a non-return valve

⚠️ Thermostat placement – install temperature sensor in the integral pocket at the pool water INLET end

⚠️ Isolation valves – fit to both circuits for maintenance access

⚠️ Air locks – ensure heating circuit is properly vented; pump-assisted boiler flow is required

Professional Installation Recommended

For warranty compliance and optimal performance, professional installation by a qualified plumber or pool engineer is strongly recommended. The heat exchanger should be installed in a frost-free, dry location with adequate access for maintenance.

 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 Expertise – EJ Bowman has manufactured heat transfer solutions since 1920, establishing unmatched industry knowledge

✅ British Manufacturing Quality – designed and built in Birmingham, UK to the highest engineering standards

✅ Industry-Leading Warranty – 10-year guarantee on titanium tubestacks demonstrates confidence in product quality

✅ Proven Global Performance – tens of thousands of Bowman units operate reliably worldwide, from domestic spas to Olympic pools

✅ Superior Heat Transfer Design – more tubes than competitor products deliver up to three times faster heating

✅ Comprehensive Range – models available from 20kW to over 1,000kW for any pool size or application

✅ Easy Maintenance – removable tubestacks and end covers allow straightforward inspection and cleaning

🛒 Why Buy From Parts4Tubs

✅ UK-Based Pool Heating Specialists – expert knowledge of Bowman products and pool heating systems

✅ Technical Advice – our team can help you select the right heat exchanger for your specific application

✅ Competitive Pricing – great value on genuine Bowman heat exchangers

✅ Fast UK Delivery – prompt dispatch to get your pool heating project moving

✅ After-Sales Support – ongoing assistance with installation queries and spare parts

✅ Genuine Products – authorised stockist of authentic Bowman heat exchangers with full manufacturer warranty

✨ Summary

The Bowman EC100-5113-2T represents the ideal mid-range pool heating solution, combining 50kW of heat transfer capacity with the unrivalled corrosion resistance of titanium construction. Backed by Bowman’s 10-year tubestack guarantee and over a century of British engineering excellence, this heat exchanger delivers reliable, efficient performance for medium-sized pools up to 90,000 litres. Whether you’re heating a salt water pool, integrating with a heat pump, or connecting to a traditional boiler system, the EC100 Titanium provides the durability and performance demanded by discerning pool owners.

Invest in British quality – choose Bowman.