Hydro Multi-B – (2) or (3) CME Pumps in Parallel

• Common suction supply ( manifold )

• Common discharge ( manifold )

• The pumps are the same model • Flow & head are the same for each pump

• Total head is the same as the head of the individual pumps

• Total flow is the sum of the flows of the individual pumps

• Simple to use variable speed pumping system – (2) or (3) pumps

• 30% - 40% Less cost than comparably sized BoosterpaQ

• Flows to 330 GPM

• Heads to 231 FT ( 100 PSI boost )

• 232 PSI Maximum working pressure

• Liquid temperatures up to 140 Degrees-F

• Ambient temperatures up to 104 Degrees-F

• CME3 – CME15 Pumps ( “I” version ) 1.5 – 7.5 HP AQQE seal

• 1½ “- 3” NPT or 4” ANSI flange manifold connections

• UL Listed

• NSF61 Approval

Hydro Multi-B Overview

Hydro Multi-B Systems are Very Compact

CME Pumps on Hydro Multi-B Systems

• CME “I” version – All 304 SS wetted components

• Permanent magnet motors on some pumps 1 X 230V – Through 2 HP 3 X 460V – Through 3 HP

• Asynchronous motors on some pumps 3 X 208-230 – 2 HP, 3 HP, 5 HP & 7.5 HP 3 X 460V – 5 HP & 7.5 HP

Components of Hydro Multi-B Systems

Control Panel

Discharge Manifold316 SS

CME Pumps304 SS

Check Valve(1) Per Pump

Suction Manifold316 SS

Discharge PressureTransducer

Pump Isolation Valves(2) Per Pump

Diaphragm TankSold Separately

Base Pressure Switch – Suction Manifold

Grundfos CU323 Controller Controls the Hydro Multi-B

• Developed & manufactured by Grundfos

• Automatically insures the best operation in all situations Number of pumps in operation Energy optimized pump cascade control

• No need for “system expert” to operate the system

• Very low potential for improper use

Grundfos CU323 Controller Interface

SystemOn / Off Button

Increase Setpoint

Setpoint & Other

Information

Decrease Setpoint

Status of Discharge

Pressure or Level

Actual Discharge Value,

Value Status & Status of SensorPower & System Status

Alarm & Warning Status

Pump Controled by CU323

Pump Status

Pump is Off

Pump On / Off Button

Alarm Reset

Status of Suction Pressure

Pump Number

Hydro Multi-B Control Panel

• Manufactured by Grundfos

• Panel is NEMA 3R rated

• Panel is UL listed

• CU323

• Emergency / Normal switch One per pump Normal setting – Controlled by CU323 Emergency Setting – Pump runs at full speed

o CU323 is deactivated

• Mains power disconnect

Grundfos PC Tools

E-Products

BACnetLON

ModbusGSM

GENIbus

Hydro Multi-B Input / Output & Communication Capabilities

(2) Analog inputs

(2) Digital inputs

(3) PTC sensorsor thermal switches

(2) Digital outputs

(2) Signal relays

Grundfos CIM card

Hydro Multi-B Pump Cascade ControlConstant Pressure Application

• Insures that only the required number of pumps are running Maintain setpoint pressure Meet the flow demand

• 1st Pump starts when the actual discharge pressure drops below setpoint

• Another pump starts if the other pump(s) can’t maintain the setpoint

• When the flow demand drops, the pump(s) stop if not needed to meet demand

Hydro Multi-B Automatic Pump Changeover

• Insures an equal number of running hours on each pump

• Insures that another pump will start to meet an increased demand Another pump must be available

• There are (3) types of automatic pump changeovers Operation-dependent pump change

o Pump with lowest number of operating hours will start 1st

o Pump with highest number of operating hours will stop 1st

Alarm-dependent pump changeo Will stop a pump that faults, and start another pump

• Pump with lowest number of operating hours will start Time-dependent pump change

o Comes into play if a pump or pumps are running continuously o Once every (24) hours, will check if another pump, with lower operating hours, is available, and if so, will stop the pump and start the pump with lower operating hours

Hydro Multi-B Standby PumpsConstant Pressure Application

• Must use Grundfos PC Tools Industrial E-Products to set this function

• (1) or (2) Pumps can be selected as standby pumps

• A standby pump will not operate unless another pump faults

• A standby pump is not a specific pump Status as a standby pump alternates between all pumps

Hydro Multi-B Stop Function / Low Flow OperationConstant Pressure Application

• The last pump in operation can be automatically stopped due to low / no flow demand

• The CU323 continually monitors flow to determine a low flow demand Low flow = flow < minimum flow

• If low flow is detected, the system will go into start / stop operation The system will cycle on / off with a low flow demand The system will stop if the the actual discharge pressure is above the setpoint The system will start if the actual discharge pressure is below the setpoint If the low demand increases above minimum flow, the system will revert to normal constant pressure operation

Hydro Multi-B Dry Run Protection

• A pressure switch is supplied as standard

• A float switch can be used

• A level switch can be used

• External electrode relay Such as a Grundfos LiqTec

• Analog sensor Minimum pressure is preset at the factory Minimum pressure can be changes using PC Tools Industrial E-Products

Hydro Multi-B Other Protection Functions

• Maximum discharge pressure exceeded Stops the system if discharge pressure is > 22 PSI above setpoint for (5)

secondso Indications are shown on the CU323

Automatically restarts the system if the discharge pressure falls below the setpoint

• Minimum time between start / stop of pumps Insures a delay between the start / stop of one pump and the start / stop of

another pump Prevents “hunting” when pumps start / stop continuously

• Redundant discharge pressure sensor – Requires PC Tools Industrial E-Products

• Motor protection MLE motors have motor protection built in to them

• Controller lock function Press “Reset” & “Increase setpoint” or “Decrease setpoint” for (2) seconds to

lock Press “Reset” & “Increase setpoint” or “Decrease setpoint” for (2) seconds to

unlock