Freezing protection valve R148HP

Description

Freezing protection valve for monobloc heat pumps Giacomini R148HP

Freezing protection valve for monobloc heat pump systems. It drains the circuit fluid when its temperature drops to 1 °C and prevents the formation of ice inside the system pipes.

Available with threaded connections from G 1”M to G 1-1/2”M.

Main body, cap and drain valve with thermostatic sensor: brass. Vacuum breaker valve: POM. Seal elements: EPDM. Fluid: water. Temperature range: 0÷65 °C. Room temperature range: -30÷60 °C. Fluid temperature for drain opening: 1 °C. Fluid temperature for drain closing: 4 °C. Max working pressure: 8 bar.

Freezing protection valve is key to prevent damages to the system caused by the formation of ice.
Specifically designed for monobloc heat pump systems, this valve allows to drain circuit fluids when the temperature drops to 1 °C.

NOTE. Freezing protection valve is designed to work with glycol-free heat
pump systems.

Performance
• Fluid: water
• Temperature range: 0÷65 °C
• Outdoor air temperature range: -30÷60 °C
• Fluid temperature for drain opening: 1 °C
• Fluid temperature for drain closing: 4 °C
• Max working pressure: 8 bar
• Accuracy: ±1 °C
• Kv (with straight pipes): 1”: 60 m3/h
1-1/4”: 70 m3/h
1-1/2”: 90 m3/h

Materials
• Main body: CW617N - UNI EN12165 brass
• Drain valve with thermostatic sensor: CW603N brass
• Cap: CW617N - UNI EN12164 brass
• Vacuum breaker valve: POM
• Seal elements: EPDM

Freezing protection valves must be installed:
• only vertically, with the drain facing downwards.
• with the drain facing downward to channel the drain fluid to an appropriate collection point and avoid the formation of ice in trampling areas. Leave a gap of at least 15 cm between the drain valve and the collection point to prevent
ice stacks of drained fluid.
• on both delivery and return pipes, keeping a distance between the two valves of at least 10 cm, possibly with the pipes slightly slanted towards the freezing protection valves.
• outside the building, on the point where the pipes may reach the lowest temperatures should the heat pump fail to work.
• far from other heat sources and protected by rain, snow and direct sunlight.

For correct use:
• the freezing protection valve should NOT be insulated or covered by other materials.
• avoid siphoning as it may prevent drainage of the fluid left in the circuit.
• provide for an automatic filling unit, always active and open.
• before installation, clean the system pipes and install appropriate filtering devices.