Overview; Product Description - Xylem LOWARA GHV Manual De Instalación Y Operación

1.

Overview

The pressure booster sets of the GHV, GHC, GVF series are designed to transfer and boost water
pressure in clean water systems for homes, offices, communities and industry.
Operating limits
Fluid temperature:
Ambient temperature:
Operating pressure:
Minimum inlet pressure:
Maximum inlet pressure:
Starts per hour:
ATTENTION
2.

Product Description

The pressure booster set consists of identical electric pumps connected in parallel and mounted on a
common stand, suction and delivery manifolds, on-off valves, check valves, pressure gauge, pressure
transmitters, frequency converters and a Single-phase or Three-phase control panel.
In GHV sets, each electric pump is equipped with a Hydrovar HVL frequency converter.
In GHC sets, only one electric pump is equipped with a Hydrovar HVL frequency converter, while the
others run at fixed speed. The HVL converter always supplies the same electric pump.
In GVF sets, only one electric pump is equipped with a Danfoss FC frequency converter, installed in the
electric panel, while the others operate at fixed speed. The converter is connected in alternation to all the
electric pumps through the SD60 electronic board.
The system must be equipped with a membrane tank. The delivery manifold is fitted with couplings
designed for installation of 24-litre tanks with on-off valve. Along with the tanks, provide a suitable manifold
support. Additional floor-standing tanks may be installed and connected to the manifold.
0°C to +80°C
0°C to 40°C
Max 8 bar, 10 bar, 16 bar - Depending on the type of pump (see
instructions)
According to NPSH curve and flow resistance; level should be raised
by a safety margin of at least 0.5 metres if water contains air.
The inlet pressure plus the pressure supplied by the pump against the
closed valve must always be lower than the maximum operating
pressure.
Do not exceed the number of starts per hour indicated in section 12.
Limitations to fluid temperature and pressure may be imposed by the membrane
tank. Observe the operating limits!
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