Purpose and application:
Circulation pumps with 280 mm mounting length and backward flanges are used to pump the heat carrier in heating systems, underfloor heating systems, hot water supply systems. The heat transfer medium can be both pure fresh water and a liquid with 50% glycol impurities. Pumps of this type significantly improve efficiency of heating systems. The pumps are characterized by low noise level, simple and reliable design. They are a good solution in apartments, private houses, cottages, agriculture, warehouses, industrial facilities, livestock.
Pumping part:
- Aluminum and cast iron, treated with cataphoresis anti-corrosion treatment and water resistant painting.
- Impeller: stainless steel
- Motor shaft: stainless steel
Conditions of use
- Heating medium: Fresh water. Liquid containing glycol up to 50% may be used with significant impairment of pump performance.
- Degree of contamination: not permissible
- Ambient humidity: < 60%
- Ambient air temperature: + 5 ℃ … + 40 ℃
- Pumped liquid temperature: -5 ℃ … + 110 ℃
- Max working pressure: 1.0 MPa (10 bar)
- Fitting length: 280 mm
- Orifice diameter: 40-65 mm, depending on the model, as indicated by the first two digits.
- Connection: Flanged, depending on the model.
- Number of operating modes: 1.
Motor
- Motor type: asynchronous, closed-type, with thermal protection built into the winding
- Stator winding: 100% copper
- Insulation class: F – motor temperature resistance up to 155 ℃
- Bearings: Stainless steel
- Voltage: 1~220-240V
- Voltage: 3~380 – (GRS 65/11F)
- Frequency: 50 Hz
- Protection class: IP 44
- Cable length: 1.3 m.
- Mode of operation: continuous
Accessories:
Pump, flanges, cable 1.3 m, instruction manual.
| Model | Voltage, V | DN, mm | Power | Q max (l/min) |
H max (m) |
|
| kW | hp. | |||||
| GRS 40/10F | 1~220-240 | 40 | 0,55 | 0,75 | 300 | 10 |
| GRS 50/15F | 1~220-240 | 50 | 1,1 | 1,5 | 370 | 15 |
| GRS 65/11F | 3~380 | 65 | 1,5 | 2,0 | 750 | 11 |
Size and weight characteristics
| Model | Gross weight, kg | Package length, mm | Package width, mm | Package height, mm |
| GRS 40/10F | 21 | 255 | 280 | 330 |
| GRS 50/15F | 25,5 | 310 | 270 | 350 |
| GRS 65/11F | 33,5 | 245 | 175 | 300 |