BritTherm Automatic Сirculator Pump P4 Series P4 25/8-180 (661995611)

The BritTherm P4 25/8-180 Circulator Pump is a high-efficiency solution designed for large-capacity heating systems. With a powerful 8-metre head and extended 180mm body, this model is ideal for larger pipework installations requiring maximum flow and flexibility. Featuring 11 intelligent operating modes and full PWM control compatibility, it integrates seamlessly with modern heating systems including HIUs, boilers, and heat pumps.

Designed for high-output systems, the BritTherm P4 25/8-180 provides robust circulation across all types of HVAC applications. Its 180mm body and 25mm connections are perfect for commercial or large-scale domestic systems where a longer pump body is required for retrofit or design compliance.

With an impressive 8-metre head, the P4 25/8-180 delivers reliable performance in complex installations such as multi-zone heating and underfloor layouts. The AUTO mode suits most heating systems, while the constant and proportional pressure settings ensure optimal efficiency across varying flow demands.

Equipped with PWM control, this pump connects to low-voltage thermostat systems from brands like Siemens and Honeywell, enabling smart, responsive control. Built-in electrical and thermal protection features provide peace of mind against power faults and overheating, helping maintain pump integrity over time.

Features & Benefits:
✅ Extended 180mm body for larger pipework configurations
✅ High 8-metre head ideal for demanding heating systems
✅ 11 programmable modes including AUTO and pressure control options
✅ PWM-compatible for smart home and commercial system integration
✅ Perfect for underfloor heating, radiators, HIUs, and energy-efficient upgrades
✅ Simple one-button operation for quick setup and adjustments
✅ Thermal and electrical protection enhances system safety
✅ Compatible with leading control systems including Siemens and Honeywell
✅ Silent operation, suitable for domestic or commercial settings
✅ Engineered by BritTherm for long-term reliability and performance

• Programs = 11 Control Programs with remote control function
• Maximum Head (Meters) = 8
• Flow (m3/h) = 3.6
• Power = 3~65
• Connection Size = 1 ½”
• Energy Efficiency Index Rating (EEI) = EEI≤ 0.21
• Maximum System Pressure (KPA) = 10 Bar
• Protection Class = IP44
• Temperature Class = TF 95°C
• Insulation Class = F
• Material = Cast Iron
• Supplied With (Loose in Box) = A set of threaded connections designed for fastening to pipes, high-temperature rubber gaskets, electrical cable 1.3 m long, pwm cable, insulation foam, data sheet and warranty instructions.

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