Product Overview

The Back-Mounted Variable Frequency Pump Unit is a compact water supply system that integrates a centrifugal pump, variable frequency drive (VFD), pressure tank and control system into a single back-mounted unit. The compact back-mounted configuration enables installation in space-constrained environments such as utility rooms, mechanical cupboards and narrow corridors, making it ideal for retrofit applications and installations where traditional pump room layouts are not feasible.

This unit is widely used in residential buildings, commercial complexes and small-scale water supply applications. Depending on regional terminology, it may also be referred to as a Wall-Mounted VFD Pump Unit, Compact Water Supply System, Back-Mounted Water Supply Equipment or Back-Mounted Variable Frequency Pump Unit.

Key Features

• Compact back-mounted configuration enables installation in space-constrained environments
• Variable frequency drive (VFD) provides energy-efficient speed regulation based on actual water demand
• Integrated pressure tank minimises pump cycling and extends equipment service life
• Pre-assembled unit reduces installation time and complexity
• Customisable flow rate, head, motor power, pump quantity and control method per project requirements
• Quiet operation suitable for installations in or near occupied spaces

Applications

• Residential building water supply and pressure boosting in space-constrained installations
• Small commercial building water supply systems
• Utility room and mechanical cupboard water supply installations
• Retrofit applications where traditional pump room layouts are not feasible
• Small-scale industrial process water supply
• Domestic water pressure boosting for individual households or small multi-unit buildings

Customer Benefits

Space-Saving Back-Mounted Design

The compact back-mounted configuration enables installation in utility rooms, mechanical cupboards and narrow corridors where traditional pump room layouts are not feasible, maximising available space utilisation.

Energy-Efficient Operation

The variable frequency drive adjusts pump speed based on actual water demand, reducing energy consumption compared to traditional constant-speed pump systems and minimising operating costs.

Pre-Assembled Convenience

The pre-assembled unit reduces installation time and complexity, enabling rapid commissioning and reducing installation labour costs.

Quiet Operation

The compact design and balanced impeller configuration minimise operational noise, making the unit suitable for installations in or near occupied spaces such as residential utility rooms and mechanical cupboards.

Customisable Configuration

Flow rate, head, motor power, pump quantity and control method can be determined according to specific customer requirements and project operating conditions, ensuring the unit is optimised for each application.

Extended Equipment Service Life

The integrated pressure tank minimises pump cycling, reducing mechanical wear and extending pump and motor service life.

Technical Specifications

Parameter	Specification
Product Type	Back-mounted variable frequency pump unit
Flow Rate	Customised per project requirements
Head	Customised per project requirements
Motor Power	Customised per project requirements
Pump Quantity	Customised per project requirements
Control Method	Customised per project requirements
Installation Type	Back-mounted / wall-mounted

Selection Guidance

To select the appropriate back-mounted variable frequency pump unit, please provide the following information:

• Required flow rate (m3/h)
• Required system pressure (MPa or bar)
• Available wall space and load-bearing capacity
• Number of pump units required
• Available voltage and frequency
• Operating conditions and duty cycle

Flow rate, head, motor power, pump quantity and control method can be determined according to specific customer requirements and project operating conditions.

Installation and Maintenance

Installation Guidance

The unit should be securely mounted on a load-bearing wall with adequate clearance for inspection and maintenance. The inlet and outlet piping must be properly connected and supported. Electrical connections must be made by qualified personnel.

Pre-Start Inspection

Before commissioning, confirm the following:

• Unit is securely mounted on a load-bearing wall
• Inlet and outlet piping connections are complete and leak-free
• Electrical connections are correct and terminals are secure
• VFD parameter settings are configured for the required system pressure
• Pressure tank pre-charge pressure is correctly set
• All valves are correctly positioned for normal operation

Routine Maintenance

Regular inspection should include:

• Checking VFD parameter settings and fault history
• Monitoring pump performance and pressure output
• Inspecting mechanical seals for leakage
• Verifying pressure tank pre-charge pressure
• Inspecting all piping connections for signs of leakage

Available Configurations

• Flow rates customised per project requirements
• Head customised per project requirements
• Motor powers customised per project requirements
• Pump quantity and control method determined per project
• Integrated control panels with automatic variable frequency control
• Integrated pressure tank for minimised pump cycling

FAQs

What is a back-mounted variable frequency pump unit?

It is a compact water supply system that integrates a centrifugal pump, variable frequency drive, pressure tank and control system into a single back-mounted unit for installation in space-constrained environments.

What are the flow and pressure ratings?

Flow rate, head, motor power, pump quantity and control method are determined according to specific customer requirements and project operating conditions.

What liquids can this unit handle?

It is suitable for clean water and non-aggressive liquids without solid particles or fibres, making it suitable for domestic water supply and small-scale industrial process water applications.

Why use a back-mounted design?

The back-mounted configuration enables installation in utility rooms, mechanical cupboards and narrow corridors where traditional pump room layouts are not feasible, maximising available space utilisation.

Why use variable frequency control?

Variable frequency control adjusts pump speed based on actual water demand, reducing energy consumption, minimising pump cycling and extending equipment service life.

Where can this unit be used?

It is suitable for residential building water supply, small commercial building water supply, utility room installations, retrofit applications, small-scale industrial process water supply and domestic water pressure boosting.

Contact Chaodun

For product selection, technical data, performance information or project quotations, please contact Shanghai Chaodun Machinery Manufacturing Group Co., Ltd.

Website: https://cd-pump.cc

Email: Suzion@cd-pump.com

WhatsApp: +44 751 8050 473