◊ Application

GRS pumps are designed for circulation of liquid in heating and air-conditioning systems. Pumps with Bronze or Stainless steel housings are also suitable for circulation in hot-water service systems. Examples of typical applications are:

• One- and two-pipe heating systems
• Main pumps
• Zone pumps
• Boiler shunt pumps
• Pumps for heating surfaces
• Calorifiers
• Underfloor heating systems
• Solar heating systems
• Heat pump systems
• Geothermal heating systems
• Heat recovery systems
• Two-pipe air-conditioning systems
• Pumps for refrigeration units

◊ Features

• Maintenance-free
• Low-noise
• Low-energy
• Complete welding, no leakage rotor
• Three-speed switch
• Available with corrosion-resistant stainless steel or bronze pump housing
• 100% noisy and pressure testing

◊ Technical data

1. Suitable fluid:

Heating water to Vd12035

Water/glycol mixtures: Max.mixing ratio 1:1

Hydraulic corrections required for mixing ratio above 20%

2. Fluid temperature range: -10°C~+110°C

3. Max.working pressure: 6bar

4. Ambient temperature up to +40°C

5. Degree of protection: IP54

6. Insulation class: F

7. Construction Materials:

• Pump body: Cast iron

• Impeller: GF-PP

• Shaft: Ceramic

• Bearing: Ceramic