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Hydraulic Installation - Calorex ELEVA 4 kW V2 Manual De Instalación

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27 / EN
V.- HYDRAULIC INSTALLATION
V.- HYDRAULIC INSTALLATION
To achieve a good heater installation, verify the type of water feed system you have
at your home or the location where the water heater will be installed, as there are two
different types.
Open system (with a water storage tank): to supply water to the heater, an air tube
must be installed at the cold-water inlet.
The air tube installation must not be omitted for the cold-water inlet, and we
recommend installing one for the hot water outlet also.
The air tube venting must be slightly higher than the upper level of the water
storage tank, by at least 20 cm (See Figure 5).
Long segments of piping should be avoided and/or a lot of accessories such as:
elbows, T connections, bypass valves, etc. (the recommended distance between
the heater and the point of use should not exceed 5 m).
Check that the minimum flow of your shower is of 1,5 L/min (model 4 kW),
2 L/min (model 9,5 kW) y 1,5 L/min (model 12 kW) .
Check that the minimum pressure of your installation is 0,2 kgf/cm
(model 4 y 9,5 kW) and 0,25 kgf/cm
IMPORTANT
In the open system, UNINSTALL the included relief valve, because it could cause a loss
of pressure in the line.
Closed or Pressurized System (direct from the water network): regarding the heater's
water supply, we recommend installing a relief valve (NOT INCLUDED) at the hot water
outlet, calibrated at (0,68 MPa) (7 kgf/cm
IMPORTANT
When there is excessive pressure, water exits through the relief valve. This is a normal
mechanism and does not mean the heater has a failure. Avoid undue water spills by
installing a drain tube at the relief valve exit towards the drainage.
NOT installing the relief valve in a closed system will void the warranty. Do not skip
this step.
Maximum operating pressure of 8,15 kgf/cm
We recommend checking the relief valve (included) at least once a year, to make sure
it is in good working condition.
(0,025 MPa) (model 12 kW).
2
) (100 psi) (See Figure 6).
2
(0,8 MPa).
2
(0,02 MPa)
2

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Eleva 9,5 kw v2Eleva 12 kw v2