KOSPEL two‑coil domestic hot water heat exchanger WP-140

The KOSPEL two‑coil domestic hot water heat exchanger WP-140 is a double‑jacket heat exchanger designed to transfer thermal energy from a primary heating circuit to a potable water circuit. Its two coil circuits allow connection to a boiler, heat pump or other heat source while keeping the domestic water separate from the primary medium. The unit is intended for continuous or alternating supply of domestic hot water in residential properties and small commercial installations, and for integration with central heating systems.

Advantages

The double‑jacket construction with two independent coils improves heat transfer efficiency and reduces thermal losses compared with single‑coil designs. Separate coil circuits enable connection of two heat sources or staged heat exchange, which increases system flexibility. The stainless steel potable water chamber and robust coil material provide corrosion resistance and long service life under normal operating conditions. The compact cylindrical form and standard hydraulic connections simplify installation and maintenance in typical boiler rooms.

Suitable for

• Residential central heating systems requiring domestic hot water production
• Integration with boilers, heat pumps or solid fuel systems
• Light commercial premises such as small offices, guesthouses or workshops
• Installations needing two separate heating circuits or staged heat input

Key specifications

• Double‑jacket construction with two independent coil circuits for heat transfer
• Capacity and dimensions suitable for domestic and small commercial DHW demands (model WP-140)
• Materials selected for potable water compatibility and corrosion resistance
• Standard hydraulic connections for integration with central heating equipment
• Designed for continuous hot water supply and compatibility with common heat sources

How to use

Install the heat exchanger in a location that allows secure hydraulic connection to the primary heating circuit(s) and the potable water supply, following local plumbing and building codes. Connect the two coil circuits to the heat source(s) and the water chamber to the domestic hot water distribution. Flush and pressure‑test the system before commissioning to remove air and debris. Regulate flow rates and source temperature according to the heating system design to achieve the required domestic water temperature while avoiding excessive thermal stress on the exchanger.

Usage recommendations

Maintain periodic inspections of hydraulic connections, safety and control components. Perform water quality checks and use appropriate corrosion inhibitors or water treatment where required by local standards. Follow the manufacturer’s installation instructions and consult a qualified heating engineer for sizing and commissioning to ensure reliable performance and safe operation.