🔥 Bowman Titanium Heat Exchanger – 25kW (85,000 BTU) | EC80 Compact Series

🌡️ Premium Titanium Pool Heating – Ultimate Corrosion Resistance for Salt Water & Chlorinated Pools

📋 Product Overview

The Bowman EC80-5113-1T is a compact yet powerful 25kW titanium heat exchanger, engineered by Britain’s leading manufacturer with over 100 years of heat transfer expertise. This unit delivers efficient pool heating while offering the ultimate protection against corrosion – making it the perfect “fit and forget” solution for demanding pool environments.

Featuring a full titanium tubestack backed by an industry-leading 10-year guarantee, this heat exchanger handles salt water, chlorinated pools, and aggressive pool chemicals with ease. The compact EC Series design fits seamlessly into tight plant rooms while delivering impressive heat transfer performance of up to 85,000 BTU/hr with an 82°C boiler water supply.

Designed for pools up to 50,000 litres (11,000 gallons), the EC80 Titanium is ideal for residential pools, spas, plunge pools, and smaller commercial installations where space is limited but performance cannot be compromised.

⭐ Key Features

✅ 25kW / 85,000 BTU Heat Output – Efficient heat transfer with 82°C boiler water supply (16kW / 55,000 BTU at 60°C)

✅ Full Titanium Tubestack – Complete corrosion immunity to salt water, chlorine, and aggressive pool chemicals

✅ 10-Year Titanium Guarantee – Industry-leading warranty on all titanium material in contact with pool water

✅ Compact Lightweight Design – Just 2.7kg and 370mm overall length for flexible installation in tight spaces

✅ Universal Fit End Covers – Compatible with both metric 50mm (DN40) and imperial 1½” NPS pool pipework

✅ Suitable for Pools up to 50,000 Litres – Ideal capacity for residential pools and spas (11,000 gallons)

✅ Higher Flow Rate Capability – Titanium allows maximum pool water flow of 200 l/min for enhanced heat transfer

✅ Integral Thermostat Pocket – 7mm x 40mm pocket on inlet end for accurate pool water temperature monitoring

✅ British Manufactured Quality – Designed and built to the highest standards by EJ Bowman in Birmingham, UK

✅ Easy Maintenance – Removable tubestack and end covers for simple cleaning and servicing

🔧 Technical Specifications

Specification	Details
Model Number	EC80-5113-1T
Heat Output (82°C Boiler Water)	25 kW / 85,000 BTU/hr
Heat Output (60°C Boiler Water)	16 kW / 55,000 BTU/hr
Shell Material	Cast Iron Composite
Tube Material	Titanium
Maximum Pool Volume	50 m³ / 50,000 litres (11,000 gallons)
Boiler Water Flow Rate	3.0 m³/hr (50 l/min)
Maximum Pool Water Flow Rate	12.0 m³/hr (200 l/min)
Maximum Operating Pressure	6 bar (both sides)
Max Temperature (Heating Side)	110°C
Max Temperature (Pool Side)	100°C
Pool Water Connections	Solvent Weld Ø48mm / Ø50mm (DN40) – Universal Fit
Boiler Water Connections	¾” BSP (Threaded)
Overall Length	370mm
Shell Diameter	86mm
Thermostat Pocket	Ø7mm x 40mm (Inlet End)
Weight (Dry)	2.7 kg
Warranty	10 Years (Titanium Material) / 12 Months (Manufacturing)

📊 Heat Transfer Performance

🏊 Pool Heating Capacity

The EC80-5113-1T delivers variable heat output depending on your heat source temperature:

Heat Source Temperature	Heat Output	Suitable Pool Size
82°C (Boiler)	25 kW / 85,000 BTU/hr	Up to 50,000 litres
60°C (Boiler/Heat Pump)	16 kW / 55,000 BTU/hr	Up to 50,000 litres

⚡ Performance Factors

The heat transfer performance shown above is based on achieving a target pool water temperature of 30°C, as specified in Bowman’s technical documentation. Actual performance depends on:

• Heat source output and flow temperature
• Primary (boiler) water flow rate – optimal at 50 l/min (3.0 m³/hr)
• Pool water flow rate through the heat exchanger
• Temperature differential between heat source and pool water
• Correct counter-flow installation

💧 Flow Rate Specifications

Circuit	Flow Rate
Boiler/Primary Water	3.0 m³/hr (50 litres/min)
Pool/Secondary Water	Up to 12.0 m³/hr (200 litres/min) maximum

Note: Titanium units can operate at higher pool water flow rates than cupro-nickel equivalents, enabling greater heat transfer efficiency.

⏱️ Heat-Up Times & Temperature Maintenance

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

• Heat source output (boiler or heat pump kW rating)
• Starting water temperature vs. target temperature
• Ambient/outdoor temperature conditions
• Pool cover usage (reduces heat loss by up to 75%)
• Pool insulation and construction type
• Weather and wind exposure

The Bowman EC80-5113-1T is a passive heat transfer device – it transfers heat from your boiler or heat pump to the pool water. Your actual heating times depend primarily on the output of your heat source, not just the heat exchanger capacity.

📐 Sizing Guidance from Manufacturer

According to Bowman specifications, this 25kW unit is rated for pools up to:

• 50 m³ (50,000 litres / 11,000 gallons) with 82°C boiler water
• Smaller pools when used with lower temperature heat sources (60°C)

ℹ️ Note: For accurate heat-up time calculations tailored to your specific installation, please contact Parts4Tubs technical support with details of your pool size, heat source, and target temperatures.

🛡️ Material & Compatibility Guide

Why Choose Titanium?

Titanium is the ultimate material choice for swimming pool heat exchangers, offering complete immunity to corrosion from pool water chemicals. The Bowman EC80-5113-1T titanium tubestack provides:

✅ Salt Water Pools & Salt Chlorinators – Titanium resists attack from salt indefinitely, unlike stainless steel which corrodes in saline environments

✅ All Pool Chemicals – Withstands chlorine, bromine, and other sanitising chemicals without degradation

✅ No Galvanic Reaction – Eliminates the possibility of corrosion caused by dissimilar metals in contact

✅ Longest Lifespan – Backed by Bowman’s 10-year titanium guarantee

✅ Higher Flow Rates – Titanium enables operation at higher pool water flow rates for improved heat transfer

Recommended Water Chemistry Limits (Titanium)

Parameter	Acceptable Range
Free Chlorine	Up to 15.0 ppm
pH Level	6.8 – 8.0
Calcium Hardness	200 – 1000 ppm
Alkalinity	100 – 150 ppm
Bromine	Up to 15.0 ppm
Chloride	Up to 3000 ppm

Material Comparison

Feature	Titanium	Stainless Steel	Cupro-Nickel
Salt Water Compatible	✅ Yes	❌ No	✅ Yes
Salt Chlorinator Compatible	✅ Yes	❌ No	✅ Yes
Chlorinated Freshwater	✅ Yes	✅ Yes	✅ Yes
Corrosion Resistance	Excellent	Good	Very Good
Warranty	10 Years	12 Months	12 Months

🎯 Applications & Use Cases

The Bowman EC80-5113-1T is perfectly suited for:

🏊‍♂️ Residential Swimming Pools – Ideal for domestic pools up to 50,000 litres with any water type

🛁 Hot Tubs & Spas – Compact size perfect for spa heating systems

🏊 Plunge Pools & Therapy Pools – Excellent for smaller wellness installations

🌊 Salt Water Systems – Titanium construction handles salt chlorinators without corrosion

🔥 Boiler Connections – Designed for use with oil, gas, LPG, or biomass boilers

☀️ Solar Thermal Integration – Compatible with solar panel heating systems

🌡️ Heat Pump Systems – Works efficiently with air source and ground source heat pumps

🏢 Small Commercial Installations – Suitable for holiday lets, B&Bs, and boutique hotels

🔨 Installation Considerations

Mounting Options

The EC80 heat exchanger can be mounted:

• ✅ Horizontally
• ✅ Vertically

Connection Requirements

Connection	Specification
Pool Water (Inlet/Outlet)	Solvent weld to Ø48mm or Ø50mm pipe (DN40)
Boiler Water (Inlet/Outlet)	¾” BSP threaded

Critical Installation Points

✅ Counter-Flow Installation Required – Pool water must flow in the opposite direction to boiler water for optimal performance

✅ Downstream of Filtration – Install after pump and filter equipment

✅ Pump-Assisted Primary Circuit – Boiler water must be pump-circulated

✅ Thermostat Positioning – Install thermostat in the pocket on the pool water inlet end

✅ Chemical Dosing – Automatic dosing systems must be fitted downstream of the heat exchanger with a non-return valve

✅ Frost Protection – Install in a frost-free enclosure; drain completely if exposed to freezing conditions

⚠️ Professional Installation Recommended – For warranty compliance and optimal performance, we recommend installation by a qualified plumber or pool engineer.

 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 been manufacturing heat transfer solutions since 1921

✅ British Manufacturing Excellence – Designed and built in Birmingham, UK to the highest quality standards

✅ Industry-Leading 10-Year Titanium Guarantee – Unmatched warranty coverage for titanium components

✅ Proven Global Performance – Tens of thousands of units operating reliably worldwide, from domestic spas to Olympic pools

✅ Complete Material Range – Titanium, stainless steel, and cupro-nickel options to suit every application

✅ Energy Efficient Design – More heat transfer tubes than competitors for faster heating and lower energy costs

✅ Easy Maintenance – Removable tubestack design for simple cleaning and long-term serviceability

🛒 Why Buy from Parts4Tubs

✅ UK-Based Pool Heating Specialists – Expert knowledge of Bowman products and applications

✅ Competitive Pricing – Great value on genuine Bowman heat exchangers

✅ Technical Support – Get sizing advice and installation guidance from our experienced team

✅ Fast UK Delivery – Quick dispatch to get your project moving

✅ Genuine Bowman Stock – Authorised stockist of authentic Bowman products

✅ After-Sales Support – We’re here to help long after your purchase

✨ Summary

The Bowman EC80-5113-1T 25kW Titanium Heat Exchanger delivers premium British engineering in a compact, lightweight package. With its corrosion-proof titanium tubestack backed by a 10-year guarantee, this unit is the ultimate “fit and forget” solution for salt water pools, chlorinated systems, and demanding installations up to 50,000 litres. Whether you’re heating a residential pool, spa, or plunge pool, the EC80 Titanium offers uncompromising quality and long-term reliability from the world’s leading swimming pool heat exchanger manufacturer.