Wilo Economy Instrucciones De Montaje página 29

English
Captions:
Installation and operating instructions Wilo pressure boosting systems (DEA)
Fig. 1a Example of a pressure boosting system with MHIE
pumps and ECe switchgear
Fig. 1b Example of a pressure boosting system with MHI
pumps and ER switchgear
1 Pumps
2 Control equipment
3 Base frame
4 Inlet manifold pipe
5 Pressure manifold pipe
6 Check valve
7 Non-return valve
8 Diaphragm pressure vessel with throughflow
fitting
8.1 Throughflow fitting
9 Pressure gauge
10 Standard bracket
11 Low-water cut-out switchgear (WMS), optional
12 Pressure sensor
Fig. 2a Pressure sensor and diaphragm pressure vessel
kit
8 Diaphragm pressure vessel
8.1 Throughflow fitting
9 Pressure gauge
12a Pressure sensor
12b Pressure sensor (plug), electrical connection, PIN
assignment
13 Draining/venting
14 Stop valve
Fig. 2b Throughflow fitting operation/pressure testing
the diaphragm pressure vessel
8 Diaphragm pressure vessel
8.1 Throughflow fitting
A Open/close
B Draining
C Check the supply pressure (nitrogen!) according to
Fig. 3
Fig. 3 Information table: nitrogen pressure, diaphragm
pressure vessel (example)
a Nitrogen pressure according to the table
b Start-up pressure, base load pump in bar PE
c Nitrogen pressure in bar PN2
d Nitrogen measurement without water
e Important! Introduce nitrogen only
28
Fig. 4a Protection against low water level (WMS) kit
9 Pressure gauge
13 Draining/venting
14 Stop valve
15 Pressure switch
15-1 Plug connector
Fig. 4b Protection against low water level (WMS) kit, pin
assignment and electrical connection
15 Pressure switch (type PS3..or MDR- T )
15-1 Plug connector
15...- Plug connector type PS3-4xx (2-core) (normally
1a closed contact)
15-1b Plug connector type PS3-Nxx (3-core) (changeo-
ver contact)
Core colours
BN BROWN
BU BLUE
BK BLACK
Fig. 5 Example of direct connection
(hydraulic diagram)
Fig. 6 Example of indirect connection
(hydraulic diagram)
16 Consumer connections upstream of the DEA
17 Diaphragm pressure vessel on the end pressure
side with bypass
18 Consumer connections downstream of DEA
19-1 Infeed connection for system flushing (nominal
diameter = pump connection)
19-2 Drainage connection for system flushing (nominal
diameter = pump connection)
20 DEA with 4 pumps
21 Diaphragm pressure vessel on the inlet side with
by-pass
22 Unpressurised break tank on the inlet side
34 Flushing apparatus for the inlet connection of the
break tank
35 Bypass for revision/maintenance
(not permanently installed)
XX Building connection to the water supply mains
Fig. 7a Assembly: vibration damper and compensator
A Screw the vibration damper into the threaded
inserts provided and secure with locking nuts
B Compensator with extension limiters (accessories)
C Fixation of pipes downstream of the DEA, e.g. with
pipe clips (onsite)
D Threaded caps (accessory)
Fig. 7b Assembly: flexible connection lines and fixing to
the floor
A Floor fixing, structure-borne noise insulation
(onsite)
B Flexible connection pipe (accessory)
BW Bend angle
RBW Bend radius
C Fixation of pipes downstream of the DEA, e.g. with
pipe clips (onsite)
D Threaded valves (accessories)
WILO SE 05/2019