ESBE GRF100 User manual

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ESBE SYSTEM UNITS
CIRCULATION UNIT FLEXI
Series and Function • General/Safety
Mounting
Hydraulic Installation, Commissioning
How to use the information leaflet • Maintenance
• Spare parts
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GENERAL/SAFETY
PED
Max. operating pressure: PN 6
This instruction manual is an essential component of the product. Read the
instructions and the warnings carefully as they contain important information
about a safe installation, usage and maintenance.
This product can be used only for the circulation of water and water/glycol in
heating installations.
We reserve the right to modify or improve the product, its technical data and
literature at any time and without notice.
INSTALLATION EXAMPLE
All piping schematics are general representations
The producer won´t be responsible for damages caused by wrong usage or
unrespect of the instructions given in this manual.
The mounting of the unit must be performed by a qualified professional and in
compliance with local/regional laws. This manual refers to standard products.
Different versions or functions are available.
At mounting - pay attention and follow common practice and general safety norms
for the use of machineries, pressurized equipment and at high temperatures.
SERIES FUNCTION
ESBE
GDF100
Direct supply
Circulation unit intended for direct
supply of heating.
ESBE
GFF100
Fixed temperature
With a VTA Thermostatic mixing
valve ready and mounted on the
Circulation unit.
ESBE
GRF100
Mixing function
With Rotary mixingvalve VRG
ready and mounted on the
Circulation unit.

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MOUNTING
POSSIBLE INSULATION ADJUSTMENTS
EXAMPEL OF PUMP INSTALLATION
LEFT - RIGTH TRANSITION

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MULTIPLE INSTALLATIONS OF CIRCULATION UNITS ON THE WALL
If more than one Circulation Unit should be used we recommend the use of Serie
ESBE GMA manifold, with or without hydraulic separator.
When no storage tank or other components performing a hydraulic separation
are used, then manifold series GMA2XX should be installed.
FEED OF OPEN SYSTEMS
When installing in the feed of open systems, the safety supply must branch off
upstream of the circulation unit (EN 12828)
.COMMISSIONING CIRCULATION UNIT
WARNING! Before any intervention disconnect the electric mains through the
external mounted switch and depressurise!
WARNING! Depending on the operating status of the circulation pump or
system (fluid temperature), the entire Circulation Unit can become very hot.
Both primary and secondary loops have to be washed in order to remove any
possible mounting residuals.
Check that all connections are fully tightened: it´s important to check all
connections before filling the system in order to avoid leakages or sprays which
may be dangerous for the electric components. Open all shut-off valves and fill
the primary and secondary loop following the instructions for the tank, boiler etc.
During the filling phase recheck that all connections are tightened.
FILLING AND VENTING
Fill the buffer tank and the primary loop with an appropriated liquid, according
to the system instructions, respecting the limits of the components used. While
filling the device, open any vents situated in the circuit. Watch the system until
it reaches its correct operation condition. If pressure is not enough, adjust the
pressure by repeating the above procedure.
To avoid problems with cavitation, fill up the system to get sufficient pressure
head on the suction side of the circulation pump. The minimum pressure needed
depends on the temperature of the fluid. Recommended min pressure head at
fluid temperatures 50/95/110°C is 0,5/4,5/11 m respectively.
To make the filling and venting of the system easier it´s possible to force the check
valve on the return side of the unit, to an open position (default), see Fig. 1.
After a complete filling and venting, turn the screw on the check valve back to it´s
normal operating position, picture 2 and set the circulation pump operation to
recommended position.
COMMISSIONING IF USING LARGER SYSTEMS/CENTRAL REGULATING
Please read each product´s instruction manual.
COMMISSIONING FIXED TEMPERATURE OPERATION
To set the mixed water temperature, see recommendations in the table below.
All temperature settings must be measured at suitable location with a
thermometer to have the correct mixing temperature of the valve.
20 - 60°C 25°C 35°C 40°C 46°C 52°C 58°C
The temperatures are only a reference and might be different under certain conditions.
However the range will be kept.
HYDRAULIC INSTALLATION
SINGULAR INSTALLATION ON THE WALL
Install the appliance on a solid wall.
1. Choose the correct position for the piping and drilling by usage of the Mounting
template supplied with the package. Drill the holes in the wall for your installation
purposes. Take care not to damage any electrical wiring or existing piping.
2. Detach parts of the Circulation Unit's insulation shell.
3. Mount the Circulation Unit on the wall with the supplied screws and plugs.
Ensure that the pipes are completely in line and lock them firmly. *Please note
that to achive best performance there should be no tilt at all.
WARNING! For all installations, verify that the plugs are suitable for the kind of
wall chosen. Otherwise replace them with a special model. To value the suitability of
the plugs please consider the structure of the wall, all the units connected and the
weight of the water.
4. Connect the pipings.
WARNING! Equipment might be damaged when incorrect usage of tools.
5. Remount the insulation shell parts (and actuator/controller).
GDA100
180˚
>
180˚
>
40 - 50 Nm
GRF100
GFA100
0º
*

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www.esbe.eu
Mtrl.nr. 98140915 • Ritn.nr. 7549 utg. A• Rev. 1504
GB
HOW TO USE THE INFORMATION LEAFLET
The Circulation Unit is equipt with an information display containing a leaflet that
graphically explains what kind of application the unit is controlling. It gives you also
the possibility to write in notes and leave your business card behind.
Just remove the display glass and select the suitable information.
MAINTENANCE
The circulation unit does not require any specific maintenance under normal
conditions. Althoug it is important to annually check the entire system. Pay
specially attention to all threaded or soldered connections and the potential
occurrence of limestone sedimentation.
WARNING Switch off the electric supply before any operation. Pay attention to
the hot water contained.
SPARE PARTS
Spare parts are ordered via ESBE customer service.
In order to avoid queries and incorrect orders, all data on the name plate should
be submitted for each order.
GXX X00