Hydraulic Connections - Olimpia splendid SHERPA SHW S1 200 Manual Del Usuario

An hydraulic safety group complying with EN 1487 standards must be installed in the water inlet. If not, it could
cause damage to the unit, or even hurt people. The safety group must be provided with stop valve, manual drain
valve, inspectionable non-return valve and safety valve set to 7 bar. For the installation place please refer to the
pipeline connection sketch. The safety group must be protected from frost.
The discharge pipe connected to the safety group is to be installed in a continuously downward direction and in a
frost-free environment. Ensure the water may drip from the discharge pipe of the safety group and that this pipe
must be left open to the atmosphere.
The safety group is to be operated regularly to remove lime deposits and to verify that it is not blocked. Please
beware of burn, because of the high temperature of water.
The expansion tank with capacity suitably sized to absorb volume variations (depending from the extension of
sanitary distribution piping) must be installed in the inlet line. In each case, its capacity must not be lower than 12
liters for 200 series and 18 liters for 300 series.
The tank water can be drained through the external manual gate valve installed on the inlet pipe (not provided).
After all the pipes installed turn on the cold water inlet and hot water outlet to fill the tank. When there is water
normally flowing out from water outlet taps, the tank is full. Turn off all valves and check all pipes. If any leakage,
please repair.
If the inlet water pressure is less than 1.5 bar, a pressure pump should be installed at the water inlet. For ensure the
long safety using age of tank at the condition of water supply hydraulic higher than 5.5 bar, a reducing valve should
be mounted at the water inlet pipe.
A filter is advisable in the air inlet. If the unit is connected with ducts, filter in there must be put forward to the air
inlet of duct.
To fluently drain condensate water from evaporator, please install the unit at the horizontal floor with a maximum
inclination angle of 2 degrees towards the discharge hole that is located on the opposite side of the control panel.
Otherwise, please make sure that the condensate drain pipe is at the lowest place and make a siphon on it if
necessary.

9.6 HYDRAULIC CONNECTIONS

The hydraulic connections have to be installed in accordance with national and local regulations. Pipes can be made up of
multilayer pipe, polyethylene or stainless steel and must withstand at least 100°C and 10 bar. Pipes have to be designed
depending on the desired water flow and on the hydraulic pressure drops of the system. All pipes have to be insulated with
closed-cell material of adequate thickness. Units should be connected to piping by means of flexible joints. Piping should include:
• Y-shaped metallic filter (to be mounted on the inlet pipe) with a mesh not larger than 1mm.
• Automatic charging group (3 bar advised) when water supply pressure is higher than 5,5 bar.
• Hydraulic safety group (7 bar).
• Manual gate valves to separate the unit from the hydraulic circuit.
• Manual gate valve on the inlet pipe to discharge the unit if necessary.
Thermometers for wells to monitor the system's temperature.
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Expansion tanks, safety valves and air vents where indicated in the following installation diagrams.
•
Perform the connections making sure that weight of the pipes do not overload the unit.
Check the water hardness, which should not be below 12°f. With particularly hard water, it's recommended the use
of a water softener so that the residual hardness is no more than 20°f and no less than 15°f.
WARNING: When it's possible, connect the pipes to the hydraulic connections always using the system key against
key.
WARNING: Unit water inlet pipe have to be in correspondence with the blue connection, otherwise the unit
malfunction could occur.
WARNING: It is compulsory to install on the WATER INLET connection a metallic filter with a mesh not larger than 1
mm. Should the filter not be installed, the warranty will no longer be valid. The filter have to be kept clean, so
make sure that it is clean after the unit has been installed, and then check it periodically.
WARNING: if an external pump is installed and connected to the system (for hot sanitary water circuitation or solar
water circuitation) it is recommended to install and connect also a flow switch before the pump. If not, any damage
to the pump will not be signalled and the system malfunction could occur.
Perform the drainage/piping work according to the installation instruction. If there is a defect in the
drainage/piping work, water could leak from the unit and household goods could get wet and be damaged.
The hot water needs to mix with cold water for terminal usage, too hot water (over 50°C) in the heating unit may
cause injury. It's recommended the use of anti-scald valves.
The diagrams are to be considered only for indication purpose. It is always required the study of the specific
installation context and the approval of the system by a qualified heating engineer designer.
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