Wilo VBH Series, Инструкция по установке и эксплуатации

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English
18 Wilo SE 07/2015
5 Product information
5.1 Type key
5.3 Scope of delivery
• PE tank, round or cornered construction form,
with:
• Inlet connection
• Draw-off connection
• Drainage
• Float switches as protection against low water
levels with connection junction box
• Ventilation and exhaust with strainer insert
• Inspection opening with closable cover (locking
ring)
• Inner wash plates for slowing down the fluid
• Water level indicator (clear-view tube fastened
in the interior space for transport)
• Version GII and GIII with:
• Overflow as free outlet, type AF as per DIN EN
1717 with circular cross-section
• Version FLA with:
• Overflow as free outlet, type AB as per DIN EN
1717 with noncircular cross-section (with mov-
ing shutter as protection against small animals
and dust)
5.4 Accessories
Accessories must be ordered separately:
• Float valve(s) as per nominal width of the tank
inlet
• Diaphragm valve and pilot float valve as per nom-
inal width of the tank inlet
• Flushing apparatus kit in accordance with
DIN1988-6
• Flexible connection line or compensators as per
nominal connection diameter for extraction
• Overflow alarm device or AlarmControl for retro-
fitting for overflow alarm
For a detailed list and description, consult the cat-
alogue/price list.
6 Description and function
6.1 Description
The tank made of PE-HWU, in either the round or
the rectangular version, is used for the indirect
connection of a pressure boosting system to the
public potable water network. Depending on type
and size, the tank is equipped with one or more
inlet connections. In the case of all round GII and
FLA tanks (as well as with rectangular GIII tanks)
up to the 1000 litre size, and in the case of all rec-
tangular FLA tanks, the inlet connections are each
designed as through bore-holes (1) on the longi-
tudinal side for the attachment of a float valve
(Fig. 3-(16)). In the case of type GIII tanks in the
1500 to 3000-litre range, the main inlet is
designed to be on the cover in the form of a block
flange (2). This is used for connecting the outlet
line of a diaphragm valve (Fig. 4). In order to con-
trol the diaphragm valve according to the fill level
of the tank, a pilot float valve is to be mounted on
the longitudinal side in the drilled hole (1) pro-
vided for this purpose and connected with the
diaphragm valve by means of a control line (Fig. 4-
(24)).
Example: Wilo-Break tank 1000L RECTANGULAR PE FLA
Wilo break tanks Series family
150...3000L Useable nominal capacity
RECTANGULAR/
ROUND Construction form
PE Material polyethylene (PE-HWU)
GII / GIII / FLA Type designation
5.2 Technical data
Approved medium: Pure water
(other fluids on request)
Admissible fluid temperature [°C] 0 to 40
Ambient temperature [°C] 5 to +40
Drained –20 to +60
Material Polyethylene (PE-HWU) black
Fitting dimensions In accordance with dimension sheets (Fig. 1a to h)
Float switch (protection against low water
level)
Max. switching voltage
[V] 48
Max. switching current [A] 0.5
Max. rating [W/VA] 3/3
Material PVC
Protection class IP67