Global Water SolarWave Serie Manual De Instalación Y Funcionamiento página 3

For correct operation, pressure tanks should be precharged as
follows:
A. Turn off the pump, disconnect the tank from the system and
completely drain all water inside the tank to avoid water pressure
affecting precharge readings.
B. Using a suitable pressure gauge, check the precharge pressure
of the tank after assembling into the system.
C. Release or add air as necessary to adjust to the required
precharge pressure.
D. Replace protective air valve cap and seal with the air valve label
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provided. This will enable you to determine if the valve has been
tampered with in case of future service calls.
E. After correctly setting the precharge, no regular air charge
checks are required.
DO NOT CHECK AIR AFTER INSTALLATION.
CAUTION: Never over-charge the tank and precharge the
tank with ambient temperature only!
1.4 Typical Installations
Tranducer
Flow Sensor
Pressure Switch
Pressure
Gauge
Relief Valve
Water Flow
Fig. 1.4-1 Tank Installation with Accessories
• This is a diaphragm type pressure tank for use on a well water
or booster system. The system must be protected by a suitable
relief valve.
• FlowThru™ Series tanks should only be used in Variable Speed
Drive or Variable Frequency Drive controlled pumping systems.
Tank
Relief Valve
Pump
Water Flow
Fig. 1.4-2 With Convertible Jet Pump
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Tank
Water Flow
To System
From
Pump
Submersible Pump
Fig. 1.4-3 With Submersible Pump
Pressure Switch
Flexible
Connector
Fig. 1.4-4 Booster Pump w/ Horizontal Tank
Pressure
Switch
Pressure Gauge
Drain
Fig. 1.4-5 Booster Pump w/ Inline Tank
1.5 Multiple Tank Installation
Relief Valve
Header to be sized
for maximum velocity of
1.8m/sec (6ft/sec)
Fig. 1.5 Multi-tank Installation
All tanks must have the same pre-charge for the system to
function properly. Tanks should be installed on a header to ensure
all tanks receive equal and balanced pressure. Adjust each tank
precharge as detailed in section 1.3. The system pressure switch
or control should be centrally located (see Fig 1.5) in order for the
tanks to function properly.
1.6 Pump Run Control Operating Principles
Without a pressure tank, a water system's pump would cycle (turn
on) every time there was a demand for water. This frequent and
potentially short cycling would shorten the life of the pump.
Pressure tanks are designed to store water when the pump is
running and then deliver pressurized water back to the system
Pressure Gauge
when the pump is shut off. A properly sized tank will store at
least one liter of water for every liter per minute (LPM) of pump
capacity. This allows for fewer pump starts and longer run times
which should maximize the life of the pump.
3.5 bar
1. Before drawdown
1.7 Replacing Plain Steel Tanks with GWS Tanks
GWS recommends that defective plain steel tanks are replaced
with GWS tanks. It is strongly recommended that a relief valve
is installed at the GWS tank connection. Also be sure to plug the
air port on a jet pump, as air is no longer required to be supplied
to the tank.
2. Thermal Expansion Tank Installation
Thermal expansion tanks are designed to accommodate the
natural expansion of water as it is heated. Thermal expansion
tanks may be used in several different applications including closed
loop hydronic heating systems, direct and indirect solar heating
systems, and open loop potable water heating systems. GWS
has developed three different series of tanks to be used for
each application: HeatWave™ for closed loop hydronic heating
systems, SolarWave™ for indirect closed loop solar heating
systems, and ThermoWave™ for direct solar heating and open
loop potable water heating systems. For high volume thermal
expansion applications Challenger™ and SuperFlow™ Series
NOTE: All tanks must have
equal precharge tanks may be used.
CAUTION: Check tank data label for maximum operating
pressure and temperature prior to installing.
Relief
Pressure
Valve
Switch
CAUTION: Additives (such as glycol) can affect the thermal
expansion and expansion tank operation. Check with your GWS
dealer or nearest GWS sales office for more details.
WARNING: It is strongly recommended that any heating
system is protected by a suitable pressure relief valve set at or
below the maximum tank pressure rating. Failure to install a
relief valve may result in tank explosion in the event of a system
malfunction or over pressurization, resulting in property damage,
serious personal injury or death.
2.1 Precharge
Using a suitable pressure gauge, check the tank precharge
pressure prior to installation. Refer to the tank data label for
factory precharge pressure. The precharge pressure should be
set equal to the system fill pressure or the main pressure. For
SolarWave™ tanks precharge should be set at minimum system
operating pressure and/or fill pressure. Release or add air by
the tank air valve accordingly. Make sure the tank is completely
drained of water and there is no system pressure affecting the
precharge pressure reading when adjusting tank precharge.
2.2 Thermal Expansion Tank Location
As tanks, pipes and connections can leak even when installed
correctly; make sure to install the tank at a location where any
leak will not cause water damage. The thermal expansion tank
should be installed on the cold or supply side of any heating
system. The tank should be installed indoors and protected from
3.0 bar 2.5 bar
freezing temperatures.
2.3 System Connection
Thermal expansion inline tanks are designed to be supported by
system piping and should be connected to the system piping using
a "T" connection (See Fig. 2.3-1). Optional wall mounting brackets
are also available for increased support (check with your local
2. During 3. Pump comes on and
GWS dealer for more information). Vertical tanks with base are
drawdown begins to fill the tank
designed to be self-supporting and should be connected to the
system with additional piping (See Fig. 2.3-2).
Hot
Relief
Valve
Water
Heater
Fig. 2.3-1
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Cold Hot Cold
BackFlow
Water Preventer
or Check
Relief
Heater
Valve
Inline
Valve
Tank
Vertical
BackFlow
Tank
Preventer
w/ Base
or Check
Valve
Fig. 2.3-2
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