Grundfos HURLEY ENGINEERING Hydro Multi-B Series User manual

GRUNDFOS INSTRUCTIONS
Hydro Multi-B
Pressure boosting and tank fill applications
Installation and operating instructions
The Pacific Northwest's
premier Grundfos CBS
Manufacturer's Representative
for all Grundfos Booster
systems. Hurley Engineering
offers complete start up,
selection & installation
assistance, and has a full staff
of service technicians available
for preventive maintenance
programs. Hurley Engineering
is also the Pacific Northwest's
only Grundfos CBS Authorized
Service Partner.

English (US)
2
English (US) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions describe the
Grundfos Hydro Multi-B booster system.
Sections 1-5 give the information necessary to be able to unpack,
install and start up the product in a safe way.
Sections 6-17 give important information about the product, as
well as information on service, fault finding and disposal of the
product.
CONTENTS
Page
1. Limited Warranty
Products manufactured by GRUNDFOS PUMPS CORPORATION
(Grundfos) are warranted to the original user only to be free of
defects in material and workmanship for a period of 24 months
from date of installation, but not more than 30 months from date
of manufacture. Grundfos' liability under this warranty shall be
limited to repairing or replacing at Grundfos' option, without
charge, F.O.B. Grundfos' factory or authorized service station,
any product of Grundfos' manufacture. Grundfos will not be liable
for any costs of removal, installation, transportation, or any other
charges which may arise in connection with a warranty claim.
Products which are sold but not manufactured by Grundfos are
subject to the warranty provided by the manufacturer of said
products and not by Grundfos' warranty. Grundfos will not be
liable for damage or wear to products caused by abnormal
operating conditions, accident, abuse, misuse, unauthorized
alteration or repair, or if the product was not installed in
accordance with Grundfos' printed installation and operating
instructions.
To obtain service under this warranty, the defective product must
be returned to the distributor or dealer of Grundfos' products from
which it was purchased together with proof of purchase and
installation date, failure date, and supporting installation data.
Unless otherwise provided, the distributor or dealer will contact
Grundfos or an authorized service station for instructions. Any
defective product to be returned to Grundfos or a service station
must be sent freight prepaid; documentation supporting the
warranty claim and/or a Return Material Authorization must be
included if so instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES
ARISING FROM INSTALLATION, USE, OR ANY OTHER
CAUSES. THERE ARE NO EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND
THOSE WARRANTIES DESCRIBED OR REFERRED TO
ABOVE.
Some jurisdictions do not allow the exclusion or limitation of
incidental or consequential damages and some jurisdictions do
not allow limit actions on how long implied warranties may last.
Therefore, the above limitations or exclusions may not apply to
you. This warranty gives you specific legal rights and you may
also have other rights which vary from jurisdiction to jurisdiction.
1. Limited Warranty 2
2. Symbols used in this document 3
2.1 Warnings against hazards involving risk of death or
personal injury 3
2.2 Other important notes 3
3. Receiving the product 3
3.1 Transporting the product 3
4. Installing the product 3
4.1 Location 3
4.2 Mechanical installation 3
4.3 Electrical installation 5
5. Starting up the product 5
5.1 Positive inlet pressure startup procedure 5
5.2 Flooded suction and suction lift startup procedures 6
5.3 Handling the product 6
6. Product introduction 7
6.1 Product description 7
6.2 Applications 7
6.3 Identification 9
7. Control unit 10
8. Operating modes 12
8.1 Local mode, external stop not activated 12
8.2 Remote-controlled, external stop not activated 13
8.3 Remote-controlled, external stop activated 13
8.4 Adjusting the proportional-pressure setpoint 14
9. Functions 15
9.1 General functions 15
9.2 Functions for constant-pressure systems 15
9.3 Functions for tank-filling systems 17
10. Data communication 17
11. Servicing the product 17
11.1 Maintaining the product 17
12. Protecting the product against frost 17
13. Taking the product out of operation 17
14. Fault finding 18
15. Technical data 19
15.1 Pressure 19
15.2 Temperature 19
15.3 Relative humidity 19
15.4 Sound pressure level 19
15.5 Electrical data 19
16. Related documents 20
16.1 Service documentation 20
17. Disposing of the product 20
Read this document before installation. Installation
and operation must comply with local regulations and
accepted codes of good practice.
This appliance can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience
and knowledge if they have been given supervision
or instruction concerning use of the appliance in a
safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning
and user maintenance shall not be made by children
without supervision.

3
English (US)
2. Symbols used in this document
2.1 Warnings against hazards involving risk of death
or personal injury
2.2 Other important notes
3. Receiving the product
3.1 Transporting the product
The booster system is delivered in a recyclable packaging,
specially designed for transport by forklift truck or a similar
vehicle.
The forks of the forklift truck must be at least 6.6 ft (2 m) long.
4. Installing the product
Before installing the product, check the following:
• The booster system corresponds to the order.
• All visible parts are intact.
4.1 Location
Install the booster system in a well-ventilated room to ensure
sufficient cooling of the control cabinet and pumps.
Place the booster system with a 3.3 ft (1 m) clearance on all sides
for inspection and removal.
4.2 Mechanical installation
4.2.1 Pipes
Connect the pipes to the manifolds of the booster system. Either
end can be used. Apply sealing compound to the unused end of
the manifold, and fit the screw cap. For manifolds with flanges, fit
a blanking flange with gasket.
We recommend that you install pipe supports for the inlet and
outlet pipes. See figs 1and 2.
Noise and vibration are generated by the rotations in the motor
and pump and by the flow in pipes and fittings. The effect on the
environment is subjective and depends on correct installation and
the state of the other parts of the system.
If booster systems are installed in blocks of flats or the first
consumer on the line is close to the booster system, we
recommend that you fit expansion joints on the inlet and outlet
pipes to prevent that vibrations are transmitted through the pipes.
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
A red or grey circle with a diagonal bar, possibly with
a black graphical symbol, indicates that an action
must not be taken or must be stopped.
The booster system is designed for indoor
installation. Do not expose the product to direct
sunlight.
The pipes connected to the booster system must be
of adequate size.

English (US)
4
Fig. 1 Example showing the position of expansion joints, pipe
supports and machine shoes
Fig. 2 Example showing the position of expansion joints, pipe
supports and mounting bolts
Tighten all nuts before startup.
Fasten the pipes to parts of the building to ensure that they
cannot move or be twisted.
4.2.2 Foundation
Position the booster system on an even and solid surface, for
instance a concrete floor or foundation. The booster system must
be bolted to the floor or foundation.
4.2.3 Vibration dampers
To prevent the transmission of vibrations to buildings, it may be
necessary to isolate the booster system foundation from building
parts by means of vibration dampers.
The right damper varies from installation to installation, and a
wrong damper may increase the vibration level. Vibration
dampers must therefore be sized by the supplier. If the booster
system is installed on a base frame with vibration dampers,
always fit expansion joints on the manifolds. This is important to
prevent the booster system from "hanging" in the pipes.
4.2.4 Expansion joints
Fit expansion joints for these reasons:
• to absorb expansions or contractions in the pipes caused by
changing liquid temperature
• to reduce mechanical strains in connection with pressure
surges in the pipes
• to isolate mechanical structure-borne noise in the pipes (only
rubber bellows expansion joints).
Fit expansion joints at a distance of minimum 1 to 1 1/2 times the
nominal flange diameter from the manifold on the inlet as well as
on the outlet side. This prevents the development of turbulence in
the expansion joints, resulting in better inlet conditions and a
minimum pressure loss on the outlet side.
Fig. 3 Examples of rubber bellows expansion joints without
and with limiting rods
TM03 2154 3805
Pos. Description
1 Expansion joint (and good location for isolating valves)
2 Pipe support
3 Machine shoe
TM04 9900 0211
Pos. Description
1 Expansion joint (and good location for isolating valves)
2 Pipe support
3 Mounting bolt
Expansion joints, pipe supports as well as machine
shoes or mounting bolts shown in figs 1and 2
respectively are not included in a standard booster
system.
2
11
33
2
The weight of a concrete foundation must be 1.5
times the weight of the booster system.
Do not install expansion joints to compensate for
inaccuracies in the pipes such as center
displacement of flanges.
TM02 4981 1902 - TM02 4979 1902

5
English (US)
Expansion joints with limiting rods can be used to minimise the
forces caused by the expansion joints. We always recommend
that you use expansion joints with limiting rods for flanges larger
than ANSI 4" (DN 100).
Anchor the pipes so that they do not stress the expansion joints
and the pump. Follow the supplier’s instructions and pass them
on to advisers or pipe installers.
4.2.5 Prefilling of diaphragm tank, if applicable
If a diaphragm tank is connected to the system, prefill the tank
with nitrogen to a pressure of 0.7 times the setpoint.
4.3 Electrical installation
• The electrical installation of the booster system must comply
with enclosure class UL type 3R.
• Check that the power supply and frequency correspond to the
values stated on the nameplate.
• Make sure that the conductor cross-section meets the
specifications in the wiring diagram.
5. Starting up the product
After having carried out the mechanical, electrical and hydraulic
installation described in sections 4.2 Mechanical installation,
4.3 Electrical installation, proceed as follows:
5.1 Positive inlet pressure startup procedure
1. Check that the precharge pressure in the diaphragm tank is
0.7 times the required outlet pressure (setpoint).
2. Close all pump outlet isolation valves on the Multi B system.
3. Open the outlet valve on one pump and turn the tap on the
outlet side of the system allowing water to pass through the
pump. Once complete, close the isolation valve.
4. Repeat step 3 for all remaining pumps in the system. Once
complete, open the outlet isolation valve on all pumps after all
pumps have been vented.
5. Switch on the main switch.
6. Turn the system on by pressing [On/Off] and adjust the
setpoint to the desired setpoint value by pressing arrow up or
arrow down on the controller.
Use nitrogen to avoid corrosion.
CAUTION
Electric shock
Minor or moderate personal injury
- The electrical installation must be carried out by an
approved person in accordance with local
regulations and the relevant wiring diagram.
- Switch off the power supply and lock the main
switch with a padlock to ensure that the power
supply cannot be accidentally switched on.
See the wiring diagram supplied with the booster
system. Tighten all wire terminals in the panel before
switching on power to the panel.
If the system cannot be installed with the supply
disconnecting device located minimum 2 ft (0.6 m)
above service level according to EN 60204-1
paragraph 5.3.4, install the system with an external
"supply disconnecting device" made according to EN
60204-1, paragraph 5.3.2. The system must be
provided with a means permitting it to be locked in
the OFF (isolated) position.
A positive inlet pressure is required before startup
and during operation.
Do not start the pumps until they have been fully
primed.
Set the precharge pressure on the diaphragm tank
with zero pressure on the tank.
Measure the precharge pressure in the diaphragm
tank while the system is not pressurized.

English (US)
6
5.2 Flooded suction and suction lift startup
procedures
1. Check that the precharge pressure in the diaphragm tank is
0.7 times the required outlet pressure (setpoint).
Note: Set the precharge pressure with zero pressure on the
tank.
2. Switch off the main switch on the cabinet front.
3. Switch off the circuit breakers of all pumps. The circuit
breakers are located inside the cabinet.
4. Set the "Emergency/Normal" switch for all pumps to
"Emergency". The switch is located on the front of the control
cabinet.
5. Close all pump outlet valves and prime all pumps. Prime the
pumps by opening the cap on the port of the check valve
positioned closest to the pump and filling water into the port.
Prime the pump when water no longer is able to fill into the
pump. Reinstall the cap on the check valve port and repeat
the procedure for all pumps.
6. Switch on the relevant circuit breaker of the pump to be
started.
7. Switch on the main switch; this will start the pump with the
relevant circuit breaker on.
8. Vent the pump by slowly opening the outlet valve. This will
also allow gradual filling of the outlet pipes.
9. Set the "Emergency/Normal" switch for the relevant pump to
"Normal".
10. Switch off the main switch.
11. Repeat steps 6, 7, 8, 9 and 10 for the other pumps in the
system.
12. Switch on the main switch.
13. Adjust the required setpoint via the CU 323 by pressing arrow
up or arrow down.
14. Set the system to "On" by pressing [On/Off].
15. Increase the setpoint to the desired setpoint value.
Hydro Multi-B is now in automatic mode and ready for operation.
5.3 Handling the product
Lift the booster systems with CM and CME pumps as shown in
fig. 4.
During handling, the lifting point must always be above the center
of gravity of the booster system.
Fig. 4 Correct lifting of Hydro Multi-B with CM and CME
pumps
When lifting the booster system, only use suitable lifting
equipment that is in good condition and approved for the weight.
The weight is stated on the nameplate of the booster system.
Measure the precharge pressure in the diaphragm
tank while the system is not pressurized.
If you change the outlet pressure, change the
diaphragm tank precharge pressure accordingly.
The initial setpoint pressure value for the system is 0
psi, and the maximum pressure is 22 psi above the
setpoint value.
This may cause a "Maximum pressure exceeded"
alarm condition after startup is complete. Increase
the setpoint pressure value to the desired pressure
and, if necessary, bleed off the pressure on the outlet
to clear the "Maximum pressure exceeded" fault.
TM05 0221 0911
CAUTION
Overhead load
Minor or moderate personal injury
- When lifting the booster system, do not use the
eyebolts of the motors.
- Do not lift the booster system by the manifolds.
- Do not stand on the manifolds.
CAUTION
Crushing of feet
Minor or moderate personal injury
- When lifting the booster system, do not use the
eyebolts of the motors.
- Do not lift the booster system by the manifolds.
- Do not stand on the manifolds.

7
English (US)
6. Product introduction
6.1 Product description
Hydro Multi-B is a range of factory-assembled pump systems,
ready for installation and operation.
As standard, the booster systems consist of two and three pumps
connected in parallel and mounted on a common base frame with
a control cabinet and all necessary fittings.
Fig. 5 Front view of Hydro Multi-B booster system with three
CM(E) pumps
Fig. 6 Rear view of Hydro Multi-B booster system with three
CM(E) pumps
6.2 Applications
The booster systems are suitable for the following application
types:
• constant-pressure boosting
• tank filling.
6.2.1 Booster system for constant-pressure applications
The booster system for constant-pressure applications is
designed to maintain a constant pressure on the outlet side of the
pumps. The booster systems for constant-pressure applications
adjust the performance according to the demand and keep a
constant pressure in the following ways:
• by cutting the required number of pumps in and out
• through continuous adjustment of the speed of the running
pumps.
Operating principle
The user enters the required pressure of the system (setpoint) via
the user interface of the CU 323 control unit. CU 323 adjusts the
system performance according to the feedback received from the
pressure transmitter installed in the outlet manifold.
TM04 9898 0211TM04 9899 0211
Pos. Description Quantity
1 Control cabinet 1
2 Inlet manifold 1
3 Outlet manifold 1
4 Diaphragm tank (not included) 1
5 Isolating valve 2 per pump
6 Non-return valve 1 per pump
7Pump 2-4
8 Base frame 1
9 Pressure transmitter and pressure gauge 1
10 Pressure switch or inlet pressure sensor 1
11 Oval flange (CME 3-10) 2 per pump
Intermediate adapter (CME 15-25) 1 per pump
12 Screw cap or blanking flange 2
12
11
9

Control variant E
Two to three electronically speed-controlled pumps
TM03 0993 0905
One speed-controlled pump in operation.
TM00 7995 2296
Three speed-controlled pumps in operation.
TM00 7996 2296
• Control variant E for constant-pressure applications
maintains a constant pressure through continuous
adjustment of the speed of the pumps.
• The system performance is adjusted to the demand by
cutting the required number of pumps in and out and
through parallel control of the pumps in operation.
PT
Q
H
Hset
Q
H
Hset

English (US)
8
6.2.2 Booster system for tank-filling applications
The booster system for tank-filling applications is designed to fill
a tank such as a roof tank or a break tank in a controlled manner.
The booster system controls the filling either via level switches, a
level sensor, or a ball cock valve.
• Operating principle
The system has three methods of operation, one based on
level switches, one based on a level sensor and the other
based on a ball cock valve.
• Operation with level switches
The user adjusts the switches in the tank to the desired stop
and start levels.
• Operation with level sensor
The user adjusts the setpoint so it corresponds to the real tank
height, measured from the bottom of the tank to the top, via
the user interface of the CU 323 control unit.
• Operation with ball cock valve
The user adjusts the ball cock valve in the tank to the desired
start and stop levels.
• Factory setting
Start level: 15 % of setpoint
Stop level: 85 % of setpoint
High-level alarm: 95 % of setpoint.
The Multi-B systems configured for tank filling applications work as described below.
The CU323 will display the tank level graphically. For
assistance contact Grundfos.
The PC tool is required to adjust the start and stop
level setting. For assistance contact Grundfos.
Control variant E
E: Two to three electronically speed-controlled pumps
TM05 0222 0911
Fig. 7 Example of tank filling
• In tank-filling applications, the booster system fills the tank with focus on protecting the piping and preventing water hammer. When
low level in the tank is reached, a speed-controlled pump starts by running approximately 70 % of maximum speed to slowly and
safely fill the pipes. After a while, it increases the speed to 100 %, and the next pump is started. When the tank is full, the pumps
stop.
• Systems with more than two pumps will as default set one pump as standby pump.
• Changeover among the mains-operated pumps is automatic and depends on load, time and fault.
First pump starts Second pump starts First pump stops
Second pump stops
Time
Pump speed
t
n
100 %
70 %

9
English (US)
6.3 Identification
6.3.1 Nameplate
The nameplate of the booster system is fitted on the base frame.
Fig. 8 Nameplate
6.3.2 Type key
* The control cabinet can be placed up to 6.6 ft (2 m) from the pumps.
TM06 9434 2317
Pos. Description
1 Type designation
2 Model
3 Serial number
4 Supply voltage
5 Maximum operating pressure in psi
6 Liquid temperature
7 Panel part number
8 Weight in lb
9 Country of origin
10 Company logo
11 Maximum flow rate in GPM
12 Nominal head in ft
13 Approval mark, cULus (Category QCZJ)
14 Approval mark
15 QR code
Type: HYDRO MULTI-B 3 CME10-3
Model: A
Serial No.: 10000001
Mains supply: 3 x 460 V, 60 Hz
pMax: 145 PSI Q Nom / Max: 159 / 240
H Nom / Max: 127 / 225Liq. temp.: 32-140
Panel PN: 91148011
Weight: 840 Ib
ASSEMBLED IN US
ft
GPM
F
QR
code Packet Pumping system 38PK
DK - 8850 - Bjerringbro - Denmark
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Code Example Hydro Multi-B -E 3 CME 10-3 A 3 x 460 V, 60 Hz
Type range
E
System type
All pumps, E-motor or CUE
Number of pumps with integrated frequency drive and pump type
A
Pump material
Cast iron (EN-GJL-200)
Supply voltage, frequency

English (US)
10
7. Control unit
The booster system incorporates a CU 323 control unit which enables manual setting and monitoring of the system.
Figure 9shows the user interface for a system with four pumps.
Fig. 9 User interface of control cabinet and CU 323
TM05 0479 1111
PT
WS
On
Off
RESET
OFF AUTO
OFF AUTO
OFF AUTO
OFF AUTO
CU 323
4
3
2
1
system run
alarm
1
2
3
4
5
8
9
10 11
12
13
14
15
16
PT
WS
On
Off
RESET
OFF AUTO
OFF AUTO
OFF AUTO
OFF AUTO
CU 323
4
3
2
1
system run
alarm
6
7
Pos. Buttons Description
1 [On/Off]: Changes the system operating mode between "Normal" and "Stop".
2 [Up]: Increases the setpoint value.
3 [Down]: Decreases the setpoint value.
4 [RESET]: Resets all alarms.
5[>]: Changes the operating mode of the individual pumps between "AUTO" and "OFF". Each pump in
the system has an Auto/Off button.
6
Enables "Emergency/Normal" operation.
Note: If a pump is set to "Emergency" operation, it will run at 100 % speed, and the power supply to
CU 323 will be switched off. There is a delay of 30 seconds before the pumps are set to "Emergency"
operation.
7 Switches the power supply to the control cabinet on or off.
8
"Setpoint" Shows the setpoint. After unlocking CU 323, the setpoint will flash.
Proportional-pressure control. "PPP" flashes for one second followed by the current setpoint for four
seconds. This function is only available for E-pump systems.
The tank symbol appears in tank-filling mode with float switches.
or "Setpoint" Alternates between the tank symbol and the setpoint in tank-filling mode with analog input.
External stop: Indicates that the system has been stopped externally via a digital input.
Indicates that the system has been set to "OFF".
Indicates that the system has been set from "OFF" to "On". "On" is only shown for 3 seconds after
which the setpoint is shown.
Indicates that the buttons on CU 323 have been locked automatically. To unlock the buttons, press
[RESET] and arrow up or [RESET] and arrow down simultaneously.
Indicates that the system is remotely controlled.
Local: Appears if attempts to change local settings are made while the system is remotely controlled.
On
Off
RESET
1___!
1___!
E.St
OFF
On
0-N
bUS
LOC