Fox Hot Bypass Anti-freeze System

The Hot Bypass FoX is a complete anti-freeze device designed for monoblock heat pumps. The system forces the circulation of the water circuit in emergency situations (e.g., power outage, pump stoppage) to protect the installation from freezing and ensures minimal pump operation to maintain the temperature in the circuit.

Manufacturer: FoxAIR — a company specializing in devices and accessories for heat pumps. The Hot Bypass FoX is developed and supplied by FoxAIR, according to the technical specification and installation equipment dedicated to monoblock installations.

Electrical and Technical Parameters

• Battery output voltage: 12 V
• Battery capacity: 18 Ah
• Charging voltage: 13.7–13.8 V @25°C (buffer mode), 14.6–14.8 V @25°C (cyclic mode)
• Maximum charging current (system): 5.4 A
• Power supply (output): 14.5 V DC
• Power supply (input): 100–240 V AC, 50–60 Hz
• Charging current (power supply): 1 A
• Operating time in water circulation maintenance mode: up to 48 h

Mechanical Parameters

• Housing: plastic, grey color
• Housing dimensions: 248 × 196 × 96 mm
• Weight: 5.5 kg
• Pump operating temperature: 0 – 60 °C
• Permissible ambient temperature range: −20 – 60 °C
• Maximum pump power: 19 W
• Maximum pump flow: 800 l/h
• Maximum height of water column lift: 5 m
• Pump noise level: < 35 dB
• Warranty: 2 years