Hydro Multi-B
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
English (US)
Caution
Note
Note
English (US) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1. Symbols used in this document
2. Limited warranty
3. Product introduction
3.1 Introduction
3.2 Delivery and handling
3.3 Applications
3.4 Features and benefits
4. Delivery and handling
4.1 Delivery
4.2 Handling
5. Identification
5.1 Nameplate
5.2 Type key
6. Installation
6.1 Mechanical installation
6.2 Electrical installation
7. Operation
7.1 User interface
8. Startup
8.1 Positive inlet pressure startup procedure
8.2 Flooded suction and suction lift startup procedures
9. Operating modes
9.1 Local mode, external stop not activated
9.2 Local mode, external stop activated
9.3 Remote-controlled, external stop not activated
9.4 Remote-controlled, external stop activated
10. Functions
10.1 General functions
10.2 Functions for constant-pressure systems
11. Data communication
12. Maintenance and service
12.1 Maintenance
12.2 Frost protection
12.3 Service
12.4 Overview of inputs and outputs
13. Fault finding
14. Maintenance
14.1 Pumps
14.2 CU 323
15. Frost protection
16. Taking out of operation
17. Technical data
17.1 Pressure
17.2 Temperature
17.3 Relative humidity
17.4 Sound pressure level
18. Electrical data
18.1 Disposal
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Warnin g
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
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1. Symbols used in this document
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codes of good practice.
Warnin g
The use of this product requires experience with
and knowledge of the product.
Persons with reduced physical, sensory or
mental capabilities must not use this product,
unless they are under supervision or have been
instructed in the use of the product by a person
responsible for their safety.
Children must not use or play with this product.
Warnin g
If these safety instructions are not observed,
it may result in personal injury.
Warnin g
The surface of the product may be so hot that
it may cause burns or personal injury.
If these safety instructions are not observed, it
may result in malfunction or damage to the
equipment.
Notes or instructions that make the job easier
and ensure safe operation.
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2. 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 deale r of Grund fos' p roducts 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.
3. Product introduction
3.1 Introduction
As standard, Hydro Multi-B booster systems consist of two to
three CM(E) pumps coupled in parallel and mounted on a
common base frame with all the necessary fittings and a control
cabinet.
Fig. 1 Front view of Hydro Multi-B booster system
Fig. 2 Back view of Hydro Multi-B booster system
English (US)
TM05 8632 2513TM05 8633 2513
Pos. Description Quantity
1 Control cabinet 1
2 Suction manifold (316 SS) 1
3 Discharge manifold (316 SS) 1
4 Isolating valve (Nickel Plated Brass) 2 per pump
5 Non-return valve (Polyacetal (POM)) 1 per pump
6 Pump (CME A-version CI/304 SS) 2-3
7 Base frame (304 SS) 1
8 Pressure transmitter and pressure gauge 1
9 Inlet pressure switch and pressure gauge 1
Oval flange connection (CME 3 - CME 10) 2 per pump
10
Intermediate adapter connection (CME 15) 1 per pump
11 Screw cap or blanking flange 2
Optional diaphragm tank
12
(available as an accessory)
n/a
3
English (US)
PT
H
set
Q
H
H
set
3.2 Delivery and handling
3.2.1 Delivery
The Hydro Multi-B booster system is delivered in packaging
specially designed for transport by fork-lift truck or a similar
vehicle.
The forks of the fork-lift truck must be at least 6 ft (2 m) long.
3.2.2 Handling
The Hydro Multi-B booster system is delivered attached to a
wood pallet. It is recommended to move the system on wood
pallet to installation location. Detach from wood pallet and slide
off wood pallet at final location of installation.
Warnin g
When lifting the booster system, never use the
eyebolts of the motors.
Do not lift the booster system by the manifolds.
Do not stand on the manifolds.
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.
3.3 Applications
Grundfos Hydro Multi-B booster systems are for constant
pressure boosting applications.
The Hydro Multi-B system is designed to maintain a constant
pressure on the discharge side of the pumps. Hydro Multi-B
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
CME pumps.
3.3.1 Operating principle
The user enters the required pressure of the system (setpoint) via
the user interface of the CU 323 control unit. The CU 323 adjusts
the system performance according to the feedback received from
the pressure transmitter installed on the discharge manifold.
3.3.2 Control variants
Hydro Multi-B systems for constant-pressure applications are
available as control variant E. The systems works as described
below.
Control variant E
Two to three electronically speed-controlled CME pumps.
One CME pump in operation.
H
Q
Three CME pumps in operation.
• 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.
TM03 0993 0905
TM00 7995 2296
TM00 7996 2296
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3.4 Features and benefits
The Hydro Multi-B is developed with focus on user-friendliness
and ease of operation.
The pumps are controlled via the CU 323 controller which
features a simple interface that makes it easy to control and
monitor the system.
When the system has been set up, the controller takes care of the
daily operation.
Fig. 3 CU 323 controller
The components and design of the Hydro Multi-B have been
chosen with focus on robustness and compactness. Every
system is thoroughly tested before is leaves the factory.
4. Delivery and handling
4.1 Delivery
The Hydro Multi-B booster system is delivered in a recyclable
packaging, specially designed for transport by fork-lift truck or a
similar vehicle.
The forks of the fork-lift truck must be at least 6 feet long.
4.2 Handling
Hydro Multi-B booster systems must be lifted as shown in fig. 4.
During handling, the lifting point should always be above the
centre of gravity of the booster system.
English (US)
TM05 0444 1211
TM05 0221 0911
Fig. 4 Correct lifting of Hydro Multi-B
Warnin g
When lifting the booster system, never use the
eyebolts of the motors.
Do not lift the booster system by the manifolds.
Do not stand on the manifolds.
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.
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English (US)
Note
Note
5. Identification
This section shows the nameplate, the type key and the codes
that can appear in the variant code.
As codes can be combined, a code position may
contain more than one code (letter).
5.1 Nameplate
The nameplate is fitted on the base frame.
Fig. 5 Nameplate
Pos. Descripti on
1 Type designation
2 Model
3 Supply voltage
4 Maximum head [ft]
5 Nominal head [ft]
6 Nominal flow rate [gpm]
7 Weight [lb]
Motor power [Hp] of pumps with variable frequency
8
drive
9 Code for pump versions
10 Number of E-pumps
11 E-pump type
12 System serial number
13 Control panel part number
14 Options
15 Country of origin
16 cULus Packaged Pumping Listing (Category QCZJ)
TM05 9777 4413
5.2 Type key
Code Example Hydro Multi-B E 2 CME 10-3 A 3 x 460 V, 60 Hz
Type range
System variants
E
Two to three pumps with integrated variable frequency drive
Number of pumps with integrated variable frequency drive, (CME) pump type and pump material
A
Cast iron (EN-GJL-200)
Supply voltage, frequency
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6. Installation
Caution
Note
Note
Note
Note
Note
Note
Note
Note
Warnin g
Installation and operation must comply with local
regulations and accepted codes of good practice.
Before installation, check the following:
• Does the booster system correspond to order?
• Are all visible parts intact?
6.1 Mechanical installation
6.1.1 Location
The booster system must be installed in a well ventilated room to
ensure sufficient cooling of the pumps and the control cabinet.
The booster system is not designed for outdoor
installation and must not be exposed to direct
sunlight.
The booster system must have a 3 ft (1 m)
clearance on all sides for inspection and
dismantling.
6.1.2 Pipework
The pipework connected to the booster system
must be of adequate size.
Fig. 6 Example showing the position of expansion joint s, pipe
supports and mounting bolts
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.
It is advisable to install pipe supports for the suction and
discharge pipes. See fig. 6.
To achieve optimum operation and minimize noise and vibration,
it may be necessary to consider vibration dampening of the
booster system.
Noise and vibration are generated by the rotations in the motor
and pump and by the flow in pipework 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 a building where the first user
on the line is close to the booster system, it is advisable to fit
expansion joints on the suction and discharge pipes to prevent
vibration being transmitted through the pipework. All nuts should
be re-tightened prior to start-up.
The pipes must be fastened to parts of the building to ensure that
they cannot move or be twisted.
6.1.3 Foundation
The booster system should be positioned on an even and solid
surface, for instance a concrete floor or foundation. The booster
system must be bolted to the floor or foundation.
As a rule of thumb, the weight of a concrete
foundation should be 1.5 x the weight of the
booster system.
6.1.4 Vibration dampers
To prevent the transmission o f vibrations to buildings, it may be
necessary to isolate the booster system foundation from building
parts by means of vibration dampers.
Which is the right damper varies from installation to installation,
and a wrong damper may increase the vibration level. Vibration
dampers should therefore be sized by the supplier of vibration
dampers. If the booster system is installed on a base frame with
vibration dampers, expansion joints should always be fitted on
the manifolds. This is important to prevent the booster system
TM04 9900 0211
from "hanging" in the pipework.
English (US)
Pos. Description
1 Expansion joint
2 Pipe support (and good location for isolating valve)
3 Mounting bolts
Expansion joints, pipe supports and mounting
bolts shown in fig. 6 above are not supplied with
a standard booster system.
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