Honeywell GmbH
8
Translation of original - EN1H-1377GE23 R1114
GB
3.6 Version
Plug-in ready compact booster unit, consisting of:
• self-priming multi-stage centrifugal pump
• monitoring and control unit for the centrifugal pump
• system control
• backfeed tank with integrated drinking water backfeed via mechanical
floating valve and free outlet according to EN 1717
• fastening set for wall mounting, consisting of screws, wall plugs and
mounting bracket
• flexible expansion joint connection PN10 with DVGW-/TÜV approval and
10-year guarantee for the pressure side as well as the drinking water
connection (length approx. 30/50 cm)
• Membrane pressure expansion vessel
• Installation manual with mounting template
3.7 Overview
In an angular tank designed for wall mounting there is a multi-stage high-
pressure pump. The high-pressure pump is connected via bent tube to an
inlet, which leads to the supply tank.
Figure 1:
CBU140 Structure
3.7.1 Installation type
• Fixed installation
3.8 Intended use
The compact booster unit may only be operated in such areas as described
in the other applicable documents.
Non-intended operation of the compact booster unit can result in danger to
persons, systems, the surroundings and the environment.
• Operate the compact booster unit only if it is in perfect working condition.
• Do not operate the compact booster unit if it is only partially assembled.
• The compact booster unit may only be used to pump the medium as
described in the documentation of the respective version.
• Never operate the compact booster unit without pump medium.
• Observe the values for minimum pumping rates (avoiding damage
because of overheating, storage damage, ...).
• Observe the values for maximum pumping rates (to avoid damage due to
overheating, floating ring seal damage, cavitation damage, storage
damage, ...).
• Do not throttle the input of the compact booster unit (to avoid cavitation
damage).
• Other modes of operations, if not mentioned in the documentation, have
to be coordinated with the manufacturer.
3.9 Non-intended use
The compact booster unit is not designed for operation outside. Tempera-
ture, light and moisture can lead to malfunctions and damaging devices.
• Do not operate the compact booster unit outside.
• Operate the compact booster unit only as intended.
• Do not fill aggressive or flammable medium into the medium lines of the
system.
• No mechanical stress on housings (e.g. by depositing objects or as a
step).
• Do not perform any external modifications on the device housing. Do not
paint housing parts and screws!
• Do not disassemble the compact booster unit more than is necessary for
purposes of installation and maintenance.
3.10Options
4. Function
The self-priming system draws in the pumping medium from an angular tank
via the inlet. In this tank there is a water supply of approx. 13 Litre, which is
automatically filled and refilled from the drinking water network via floating
valve. The pump is turned on and off automatically when a consumer is
opened.
For monitoring there is a pump control in the pressure lines of the system,
which turns the pump on when the pressure drops below approx. 2.5 bar
(factory setting). When the consumer is closed, the pump is then turned off
with a delay of approx. 10 seconds. This device simultaneously protects the
pump from dry running. A check valve in the pump control prevents back-
flow. The pressure is read from a built-in pressure gauge.
4.1 Construction dimensions
CBU
Membrane pressure expansion vessel
1 Pump control
5
Pressure delivery
2 Pump
6
Tank
3 Inlet tank
7
Vent valve
4 Drinking water connection
1
6
5
4
2
3
7
CBU140-25A-043
Connection size DN25, Pumping head 43 m
DN 70 discharge pipe
200mm free space for service
in both directions
410
28
56
168
569
R 3/4
90
425
R 1
290
206
