Compact pressure-boosting system in accordance with DIN 1988 and DIN EN 806 for direct or indirect connection. Consisting of glanded versions of non-self-priming, vertically mounted, stainless-steel high-pressure multistage centrifugal pumps connected in parallel, for which each pump is fitted with a frequency converter. Ready for connection with stainless steel pipework, mounted on a base frame, including control device with all necessary measurement and adjustment equipment.

For fully automatic water supply and pressure boosting in residential, commercial and administrative buildings, hotels, hospitals, department stores and for industrial systems.

For pumping drinking water, process water, cooling water, firefighting water (apart from fire-fighting systems in accordance with DIN 14462 and with the approval of the local fire safety authorities) or other types of industrial water that do not affect the materials either chemically or mechanically and do not contain abrasive or long-fibre constituents.

Special features/product advantages

• IE5 motor and optimised hydraulics ensure high energy system efficiency

• Disproportionately large frequency converter control range from 25 Hz up to a maximum of 60 Hz for a large field of application

• Various protective features including overload protection, dry-running protection and automatic deactivation ensure high reliability.

• Easy setting and operation with the SCe control panel thanks to LCD display, and green knob for adjustment.

• Ready for building automation integration with the SCe control panel via Modbus

Equipment/function

2-4 pumps per system of the MVIE (70 or 95) series with speed control via integrated frequency converter on each pump.

SCe switchgear ensures automatic control of the complete pressure-boosting system.

Complete assembly mounted on galvanised steel, height-adjustable base frame.

All components that come in contact with the fluid are corrosion-resistant.

On the discharge side:

• Shut-off valve at each pump

• Non-return valve at each pump

• Diaphragm pressure vessel 8 l, PN 16

• Pressure sensor 4 – 20 mA

• Pressure gauge

On the suction side:

• Shut-off valve at each pump

• Pressure sensor 4 – 20 mA

• Pressure gauge

Smart-Controller (SCe) in a sheet metal enclosure, protection class IP 54 consisting of an internal power supply unit, microprocessor with Soft PLC, analogue and digital inputs and outputs, for control of electronic pumps with frequency converters.

A working area of 1 m around the system is recommended in order to facilitate the maintenance process.

Operation/display

• LCD display (backlit) indicates operating data, controller parameters, operating statuses of the pumps, error messages and history memory

• Menu navigation with symbols and menu numbers

• LEDs for display of the system status (operation/fault)

• Factory-preset parameters for easy commissioning/start-up

• Setting of operating parameters and acknowledgement of fault messages using Green Button Technology

• Lockable main switch

• Operation selectable with / without standby pump by customer service

• Elapsed time indicator for each pump and for overall system

• Switching cycle counter for each pump and for overall system

• Fault log for the last 16 faults

Control

• Fully automatic control for 1 to 4 frequency-controlled pumps by means of setpoint/actual value comparison

• Setpoint changeover: Second setpoint can be activated by contact

• External remote adjustment of setpoints via 4 – 20 mA signal

• Automatic, load-sensitive cut-in of 1 to n peak-load pump(s) depending on the control variable pressure - constant, p-c or pressure - variable, p-v

• 2 parameter sets selectable, Easy menu (setpoint & control mode) or Expert menu (operation and control parameters)

• Operating mode of the pumps freely selectable (manual, off, automatic)

• Automatic, configurable pump cycling

• Standard setting: Impulse - The base-load pump is cycled at each new demand, regardless of operating hours

• Alternative: Pump cycling dependent on operating hours, cycling of the base-load pump after the specified operating hours

• Automatic, configurable pump test run (pump kick)

• Can be activated/deactivated

• Time between two pump test runs is freely programmable

• Disabling times can be programmed as desired

• Speed can be adjusted as desired

Monitoring

• Actual value of the system is output via a 0-10 Volt analogue signal for external measurement / display applications, 10 Volt depending on the sensor range value

• 4-20mA sensor signal (conductivity test of the sensor cable) for control variable actual value

• The pump mains power feed is protected via the circuit breaker

• Automatic cycling to the standby pump in the event of a main pump fault

• Monitoring of maximum and minimum system values with adjustable time delays and limits

• Zero-flow test for deactivating the system when no water is being drawn off (adjustable parameters)

• Pipe filling function for filling empty pipes (initial filling of the consumer network)

• Protection against low water level via contact e.g. for float switch or pressure switch

Interfaces

• Potential-free contacts for SBM/SSM collective operation and collective fault signals

• Logical reversal can be applied to SBM and SSM

• Contacts for External on/off, low water and second setpoint

• External on/off via contact for deactivation of the system's automatic mode

Optional accessories (factory installation or retrofitting after technical checks)

• Manual-0-Automatic switch: Preselection of the operating mode of each pump and manual operation in the event of a controller fault: “Manual” (emergency/test mode available at mains power, motor protection available), “O” (pump switched off – cannot be switched on using the controller) and “Auto” (pump enabled for automatic mode via the controller)

• Evaluation relay for PTC motor protection

• Individual operation and fault signal, low-water signal

• Signal converter for 0/ 2-10V to 0/ 4-20 mA

• Soft starter for peak-load pumps

• Connection to BMS systems in accordance with VDI 3814

Recommended accessories (to be ordered separately)

• Optional WMS low-water cut-out switchgear kit;

• Flexible connection pipes or compensators

• Break tank for system separation

• Diaphragm pressure vessel

• Threaded caps for systems with threaded joint tubing

Bus systems (optional)

• BACnet, LON bus, Modbus RTU

Standards followed

• Specifications for installations inside buildings conveying water for human consumption DIN 1988 (EN806)

• Diaphragm pressure vessel/ diaphragm expansion tank DIN 4807

• Electronic Equipment for Use in Power Installations EN 50178

• Electrical Equipment of Machines EN 60204-1

• Household and Similar Electrical Appliances - Safety EN 60335-1

• Low-voltage switchgear combinations EN 60439-1/ 61439-1

• EMC - Immunity for Industrial Environments EN 61000-6-2

• EMC - Emission Standard for Residential, Commercial and Light-Industrial Environments (EN 61000-6-3)