Calio

Summary

Product Identification

The KSB Calio is a high-efficiency, variable-speed circulator pump designed for building services.

• Type Series: Calio
• Manufacturer: KSB Aktiengesellschaft
• Document Date: 30.07.2015
• Designation Example: Calio 25-100
  • Calio: High-efficiency pump
  • 25: Nominal diameter of pipe connection (e.g., 25 = R 1, 30 = R 1 1/4, 32 to 100 = DN 32 to DN 100)
  • 100: Head in m x 10 (e.g., 100 = 10 m)

Main Applications

• Heating, ventilation, air-conditioning, cooling and circulation systems
• One-pipe and two-pipe systems
• Underfloor heating systems
• Boiler or primary circuits
• Storage tank circuits
• Solar power systems
• Heat pumps

Operating Limits

• Flow Rate (Q):
  • Screw-ended pumps: ≤ 15 m³/h (≤ 4.2 l/s)
  • Flanged pumps: ≤ 51 m³/h (≤ 14.2 l/s)
• Head (H):
  • Screw-ended pumps: ≤ 12 m
  • Flanged pumps: ≤ 18 m
• Fluid Temperature (T): -10 to +110 °C
• Ambient Temperature (T): 0 to 40 °C
• Operating Pressure (p): ≤ 16 bar
• Pressure Class (PN): 6/10/16 bar
• Sound Pressure Level: < 45 dB (A)
• Minimum Pressure (pmin) at Suction Nozzle (to avoid cavitation):
  • Up to 80 °C fluid temperature: 0.5 bar
  • 81 to 95 °C fluid temperature: 1.5 bar
  • For installation at altitudes > 300 m, an allowance of 0.01 bar / 100 m must be added.

Feed Water

The Calio pump is suitable for handling:

• Heating water to VDI 2035
• Higher-viscosity fluids (e.g., water/glycol mixture up to mixing ratio of 1:1)
• Pure, thin, non-aggressive and non-explosive fluids not containing any mineral oil, solids or long fibres
• Fluids with a viscosity of max. 10 mm²/s

Electrical

• Drive: High-efficiency electric motor with continuously variable differential pressure control, electronically commutated synchronous motor with permanent magnet rotor.
• Voltage/Frequency: 1~230 VAC, 50/60 Hz
• Enclosure: IP44
• Thermal Class: F
• Temperature Class: TF 110
• Interference Emissions: EN 61 000-6-3
• Interference Immunity: EN 61 000-6-2
• Power Input (P1): Ranges from 6 W to 760 W, depending on the model.
• Nominal Current: Ranges from 0.03 A to 3.30 A, depending on the model.
• Motor Protection: Integrated motor protection in the terminal box for all models.
• Signalling Contacts: General fault message relay integrated for all models. "System operational" message via optional module for smaller pumps, or integrated relay for larger pumps.

Mechanical / Hydraulic

• Design: Highly efficient, maintenance-free wet rotor pump (glandless).
• Bearings: Product-lubricated special plain bearing.
• Connections: Screw-ended or flanged.
  • Screw-end: R 1, R 1 1/4
  • Flange: DN 32 to DN 100
• Materials:
  • Volute Casing: Grey cast iron with cathodic electrocoating (EN-GJL-200)
  • Shaft: Stainless steel 1.4034
  • Impeller: Plastic with glass fibre content (PSU-GF30)
  • Bearing: Ceramics/carbon
  • Can: Stainless steel 1.4301
  • Thermal Insulation Shells: Polypropylene
• Dimensions: Detailed dimensions for screw-ended and flanged pumps are available in the official PDF, including A, B, C, D, E, F values in mm for each size.
• Flange Design: Adapter flanges (slotted bolt hole) can connect to PN 6 and PN 16 mating flanges to DIN or DIN EN up to DN 65. Flange dimensions (ØD, Øk, n x d2) for PN 6, PN 10, and PN 16 are tabulated in the official PDF for DN 32 to DN 100.
• Installation: Permissible installation positions for all sizes.

Features and Functions

• Operating Modes:
  • Δp-v for variable differential pressure
  • Δp-c for constant differential pressure
  • Eco Mode with dynamic differential pressure setpoint adjustment (can save > 40% in electrical input power compared to Proportional-pressure Control)
  • Boost Mode with manual setpoint input
• Manual Functions:
  • Setting the operating mode
  • Setting the differential pressure setpoint
  • Setting of speed level
  • Locking the control panel
• Automatic Functions:
  • Continuous output adjustment depending on the operating mode
  • 0 – 10 V interface for external differential pressure/speed setpoint
  • Dual pump management with duty/stand-by operation (automatic changeover in event of fault, timer-controlled changeover)
  • Modbus RTU interface via RS485 bus system for connection to a building management system
  • Setback operation
  • External start/stop interface (terminal pair RUN)
  • Deblocking function (start-up at max. torque)
  • Self-venting function
  • Soft start
  • Full motor protection with integrated trip electronics
• Signalling and Display Functions:
  • Error codes indicated on the display
  • General fault message relay (volt-free changeover contact)
  • Integrated "system operational" message relay (for Calio 40-120/180, 50-100/120/150/180, 65-120, DN 80, DN 100)
  • "System operational" message via additional module (for Calio DN 25/30/32, 40-60/70/80/90/100, 50-40/60/80/90, 65-60)
  • Alternating display of flow rate, electrical input power, and head (for larger pumps)
  • Operating mode displayed by symbols

Certifications

• Europe: EEI ≤ 0.23 (All pump sizes)

Scope of Supply

• Pump
• Sealing elements for threaded connection
• Installation/operating manual
• Thermal insulation shells

Accessories

A range of electrical accessories, cold water insulation, pipe unions, and flange spacers are available. See the official PDF for specific material numbers and details.

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Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions from the complete OEM PDF datasheet. For contractual data and full product specifications, always refer to the official OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror