W Ater Installation - Calorex ELEVA PRO 15 kW Manual De Instalación Mantenimiento Y Operación

26 / EN
V.- W ATER 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 cistern): To supply water to the heater, an air tube must be in-
stalled at the cold-water inlet.
• The air tube installation must not be omitted for the cold-water inlet, and we rec-
ommend installing one for the hot water outlet also.
• The air tube discharge must be slightly higher than the upper level of the cistern,
by at least 20 cm (See Figure 5).
• Long segments of piping and/or accessories, such as: elbows, T connections, dis-
tributing valves, etc., should be avoided. (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 2 L/min.
• Check that the minimum pressure of your installation is 2.5 kgf/cm
This water heater is equipped with an electronic temperature control and automatic
re-start switches to protect it from excessively high temperatures.
Closed or Pressurized System (direct from the water system): Regarding the heater's
water supply, we recommend installing a relief valve (NOT INCLUDED) at the hot water
outlet, calibrated at
least once a year, to make sure it is in good working condition. (See Figure 6)
IMPORTANT
When there is excessive pressure, water exits through the relief valve. This is a normal
mechanism and does not mean the heater has malfunctioned. 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 1 MPa (10,2 kgf/cm
We recommend checking the relief valve (not included) at least once a year, to make
sure it is in good working condition.
(0.68 MPa) (7 kgf/cm2) (100 psi). We recommend checking it at
).
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