🔥 Bowman Cupro-Nickel Heat Exchanger – 40kW (135,000 BTU) | EC100-5113-2C

🌡️ Professional-Grade Pool Heating with Superior Corrosion Resistance for Medium-Sized Pools

📋 Product Overview

The Bowman EC100-5113-2C is a professional-grade 40kW Cupro-Nickel swimming pool heat exchanger, designed to deliver efficient heat transfer for medium-sized residential and light commercial pools up to 80,000 litres (18,000 gallons).

Built by E.J. Bowman – the acknowledged brand leader with over 60 years of swimming pool heat exchanger manufacturing experience – this unit combines powerful 135,000 BTU heating capacity with the proven corrosion resistance of Cupro-Nickel construction. The shell-and-tube design maximises heat transfer surface area, enabling faster pool heating compared to competitor products.

Featuring Bowman’s ‘Universal Fit’ composite end covers for straightforward installation and an integral thermostat pocket for accurate temperature monitoring, this heat exchanger represents the ideal balance of performance, durability and value for chlorinated freshwater pool applications.

⭐ Key Features

✅ 40kW Heat Transfer Capacity – Delivers up to 135,000 BTU/hr with 82°C boiler water for rapid pool heating

✅ Cupro-Nickel Tube Stack – Superior corrosion resistance for chlorinated freshwater pools with excellent heat conductivity

✅ Compact, Lightweight Design – Weighs just 4.5kg for easy handling and installation in confined plant rooms

✅ Universal Fit End Covers – Composite end covers accommodate both metric Ø48/50mm and imperial 1½” NPS pipework

✅ Integral 7mm Thermostat Pocket – Factory-fitted pocket on inlet end for accurate pool water temperature monitoring

✅ Flexible Mounting Options – Can be installed horizontally or vertically to suit your plant room layout

✅ Counter-Flow Design – Optimised heat transfer efficiency through opposing water flow directions

✅ 6 Bar Maximum Working Pressure – Robust construction suitable for demanding installations on both circuits

✅ Easy Maintenance Access – Removable end covers and tube stack for simple cleaning and servicing

✅ British Manufacturing Quality – Designed and manufactured in Birmingham, UK to the highest standards

🔧 Technical Specifications

Specification	Details
Model Number	EC100-5113-2C
Heat Output (82°C Boiler Water)	40kW / 135,000 BTU/hr
Heat Output (60°C Boiler Water)	22kW / 75,000 BTU/hr
Shell Material	Composite End Covers with Cast Iron Body
Tube Material	Cupro-Nickel
Max Pool Volume	80,000 litres / 18,000 gallons
Boiler/Primary Flow Rate	2.4 m³/h (40 l/min)
Max Pool Water Flow Rate	10.2 m³/h (170 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 Ø48/Ø50mm (DN40 Pipe) – Universal Fit
Boiler/Solar Water Connections	¾” BSP Threaded
Overall Length	456mm
Body Diameter	86mm
Thermostat Pocket	Ø7 x 40mm (Inlet End)
Mounting Hole Diameter	Ø7mm
Weight (Dry)	4.5kg
Warranty	12 months against manufacturing faults

📊 Heat Transfer Performance

The Bowman EC100-5113-2C delivers variable heat output depending on your primary heat source temperature:

🏊 Pool Heating Performance:

Heat Source Temperature	Heat Output	Suitable Pool Size
82°C (Boiler)	40kW / 135,000 BTU/hr	Up to 80,000 litres
60°C (Boiler/Heat Pump)	22kW / 75,000 BTU/hr	Up to 80,000 litres

⚡ Efficiency Factors:

• Optimal performance achieved when pool water temperature reaches 30°C
• Counter-flow installation essential – failure to install correctly will reduce performance
• Boiler water flow rate of 40 l/min (2.4 m³/h) required for rated output
• Maximum pool water flow rate of 170 l/min (10.2 m³/h) must not be exceeded

⏱️ Heat-Up Times & Temperature Maintenance

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

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

🛡️ Material & Compatibility Guide

Why Cupro-Nickel?

Cupro-Nickel (copper-nickel alloy) tube stacks offer an excellent balance of heat transfer efficiency, corrosion resistance, and value for chlorinated freshwater pool applications.

✅ Recommended For:

• Chlorinated freshwater swimming pools
• Bromine-treated pools
• Standard chemical treatment systems
• Residential and light commercial installations
• Boiler and heat pump heating systems

❌ Not Recommended For:

• Salt water chlorinator pools
• Salt water/saline pools
• Marine applications

Water Chemistry Requirements for Cupro-Nickel:

Parameter	Acceptable Range
Free Chlorine	1.0 – 3.0 ppm
pH Level	7.2 – 7.8
Calcium Hardness	200 – 400 ppm
Alkalinity	100 – 150 ppm
Bromine	2.0 – 4.0 ppm
Chloride	Less than 150 ppm

⚠️ Important: Maintain pH within 7.2–7.8 at all times. pH below 7.2 or above 7.8 can cause corrosion and void warranty. Daily testing is recommended.

🎯 Applications & Use Cases

🏊‍♂️ Medium-Sized Swimming Pools – Ideal for residential pools up to 80,000 litres requiring reliable, efficient heating

🛁 Commercial Spas & Hot Tubs – Robust construction suitable for demanding spa applications with high turnover

🏢 Light Commercial Facilities – Hotels, holiday parks, and leisure centres with medium pool requirements

🔥 Boiler Integration – Designed to work seamlessly with gas, oil, or LPG boilers at 60-82°C flow temperatures

☀️ Solar Thermal Systems – Compatible with solar heating panels (refer to solar-specific models for optimal performance at lower temperatures)

⚡ Heat Pump Connection – Suitable for high-temperature heat pumps delivering 60°C+ flow temperatures

🔨 Installation Considerations

Mounting Orientation:

• Can be mounted horizontally or vertically
• Ensure easy access for future maintenance and tube stack removal

Counter-Flow Installation (Essential):

• Pool water must flow in the opposite direction to boiler/heating water
• Failure to install in counter-flow arrangement will significantly reduce performance

Pipework Connections:

• Pool water: Solvent weld directly to Ø48mm or Ø50mm (DN40) pipework using Universal Fit end covers
• Boiler water: ¾” BSP threaded connections

Thermostat Positioning:

• Install pool water thermostat in the integral pocket on the pool water inlet side
• This ensures accurate temperature monitoring before water enters the heat exchanger

Installation Location:

• Install in a frost-free, dry area with non-aggressive atmosphere
• Position downstream of pumping and filtration equipment
• If using automatic chemical dosing, install dosing system after the heat exchanger with a non-return valve

Flow Requirements:

• Boiler circuit must be pump-assisted
• Do not exceed maximum pool water flow rate of 170 l/min
• Ensure no air locks in the boiler circuit

⚠️ Professional Installation Recommended: For warranty compliance and optimal performance, installation should be carried out by a qualified plumber or pool heating specialist.

📥 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

✅ 60+ Years of Expertise – Bowman has been manufacturing swimming pool heat exchangers longer than any competitor, with tens of thousands of units operating worldwide

✅ British Manufacturing Quality – Designed and manufactured in Birmingham, UK to the highest quality standards

✅ Industry-Leading Heat Transfer – More heat transfer tubes than most competitors’ products, heating pools up to three times faster

✅ Choice of Materials – Cupro-Nickel, Stainless Steel, and Titanium options to match any water type and application

✅ Proven Reliability – From domestic spas to Olympic pools, Bowman heat exchangers deliver outstanding performance in the most demanding environments

✅ Comprehensive Support – Full range of replacement parts available, with detailed technical documentation and installation guidance

🛒 Why Buy From Parts4Tubs

✅ UK-Based Pool Heating Specialists – Expert knowledge of swimming pool and spa heating equipment

✅ Genuine Bowman Products – Authorised retailer supplying authentic manufacturer stock with full warranty

✅ Technical Advice Available – Help with product selection, sizing calculations, and installation queries

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

✅ Competitive Pricing – Great value on professional-grade pool heating equipment

✅ After-Sales Support – Ongoing assistance with spare parts, maintenance advice, and troubleshooting

✨ Summary

The Bowman EC100-5113-2C 40kW Cupro-Nickel Heat Exchanger represents the ideal choice for medium-sized pool owners seeking professional-grade heating performance with proven reliability. With 135,000 BTU capacity, corrosion-resistant construction, and Bowman’s industry-leading heritage, this compact unit delivers efficient heat transfer for pools up to 80,000 litres. Backed by British manufacturing quality and comprehensive technical support, it’s the trusted choice for discerning pool owners and installers alike.