Wilo Isar MODH1-E-1-CH3-LE-604-EM is a compact pressure unit designed for automatic pressure boosting in residential and smaller commercial buildings, where space, reliability, and energy efficiency are prioritised. It utilises a multistage centrifugal pump Medana CH3-LE with an integrated frequency converter and single-phase connection of 230 V, allowing for quick and easy installation without the need for a three-phase supply. The use of stainless steel components ensures long service life, low operating costs, and safe operation with drinking water and other non-aggressive liquids.

Special features of the device:

• Efficient IE5 motor (2.2 kW) – peak efficiency up to 94.6%
• Durable stainless steel construction for long-term reliability
• Compact dimensions suitable for technically constrained spaces
• Suitable for drinking, cooling, and process water without abrasives

Equipment and functions:

• Frequency-controlled pump Medana CH3-LE with stainless steel hydraulics
• Expansion tank (8 l / PN 10), check valve, and shut-off valves
• Two pressure sensors (on suction and discharge), pressure gauge on the output side
• Integrated protection against dry running and pressure fluctuations
• Stable base frame with vibration dampers

Control and diagnostics:

• High-resolution graphical interface with "Green Button" controller
• Ability to set desired pressure values and control parameters
• Clear display of operating data, statuses, and error messages
• Log of the last 9 faults, counter of operating hours and switching cycles
• Parameter locking and safety switch according to type

Device dimensions:

Dimensions of the pump including frame and transport packaging:

• Length: 910 mm
• Width: 270 mm
• Height: 865 mm
• Net weight: approx. 39 kg

Dimensional drawing:

Terminal block wiring diagram:

SSM: Collective fault signal (Break contact according to VDI 3814, load capacity 1 A, 250 V ~)