Circulator pumps
High-efficiency circulator pumps
KC series pumps are high-efficiency circulator pumps intended for heating, ventilation and air conditioning systems.
KC M pump series
Applications: Air conditioning systems, circulating water, domestic water, heating systems, closed systems, industrial systems Materials: Housing: cataphoretic coated grey cast iron, stainless steel Impeller: glass fiber reinforced synthetic material PES GF30 Rotor casing: stainless steel AISI 316 Pump shaft: stainless steel AISI 420 Liquids: Clean water, water glycol mixture
KC MX pump series
Applications: Air conditioning systems, circulating water, domestic water, heating systems, closed systems, industrial systems Materials: Housing: cataphoretic coated grey cast iron, stainless steel Impeller: glass fiber reinforced synthetic material PES GF30 Rotor casing: stainless steel AISI 316 Pump shaft: stainless steel AISI 316 Liquids: Clean water, water glycol mixture
KC S II pump series
Applications: Air conditioning systems, circulating water, domestic water, heating systems, closed systems, industrial systems Materials: Housing: cataphoretic coated grey cast iron, stainless steel Impeller: glass fiber reinforced synthetic material PES GF30 Rotor casing: stainless steel AISI 316 Pump shaft: stainless steel AISI 316 Liquids: Clean water, water glycol mixture
Pumpselector
Choosing the right pump model for your specific requirements.
Control, protection and operating principle
- The pumps contain a permanent magnet synchronous motor.
- The impeller speed is controlled by a built-in frequency converter.
- The pump has a built-in electronic protection unit that protects the pump from overload.
- The pump bearings are lubricated with the pumped medium.
- The pump is equipped with a dry-running protection system – the impeller rotation slows down to a minimum if there is no medium in the pump.
Structure, materials and connections
For normal operation of the pump, a medium consisting of clean water or a mixture of clean water and glycol must be used in accordance with current water quality standards for heating systems, for example the German standard VDI 2035. If the glycol content in the medium is more than 20%, it is recommended to check the pump parameters: temperature range at ambient temperature +25 °C: +2…+110 °C, at ambient temperature +40 °C: +2…+95 °C.
Circulation pump operating range
KC M pumps
The pump is controlled by a button on the display. The MP and MPE pumps display the current power consumption (W), the current pressure (m) and the flow rate (m³/hour) as well as error messages. The error is indicated on the display by a two-digit number that provides a more detailed description.
The following pump operating modes are available:
- 3 control levels in proportional pressure operating mode, recommended for radiator heating
- 3 control levels in constant pressure operating mode, recommended for underfloor heating
- 3 control levels with fixed speeds in operating mode, recommended for heating and ventilation
- Summer mode – the pump automatically switches to minimum speed for a short time when the pump is in standby mode to prevent the rotor from clogging.
- automatic mode (MP/MPE) – the pump control system finds the optimal operating point, this mode is used in most systems.
- night mode (MP/MPE, works in parallel with other settings) – when the system temperature drops, the pump reduces speed to minimum.
The ME and MPE pumps are equipped with an additional module that allows the pump to be controlled with a voltage signal of 0–10 V and a relay output that provides feedback on the pump’s operation (fault/indication).
Operational reliability and anti-jamming
The pumps are available with threaded (PN10) or flanged connection (PN6/10). The pump housing is made of grey cast iron and is protected by a cataphoretic coating, which makes the pump more resistant to the environment. The SAM/SAS pump housing is made of stainless steel. The rotor package is made of one piece without welding. The rotor casing is made of stainless steel AISI 316. The pump shaft is made of stainless steel AISI 316. The impeller is made of synthetic material reinforced with glass fiber PES GF30. The bearings are made of graphite. Removable thermal insulation of the pump housing is included in the delivery package.
The pumps have a jam unblocking system – the control system allows high-torque to the pump motor to be restarted multiple times when the impeller is jammed.
24/7 maintenance and spare parts services
Kolmeks provides spare parts and maintenance services for pumps and air separators. We service pumps of various sizes reliably and professionally, ensuring their efficient and trouble-free operation.
We offer responsive maintenance support and spare parts services to keep our customers’ systems up and running in all situations.