27 / EN
Closed System Installation Diagram
Closed System
Relief Valve
(included)
Water supply valve
(not included)
Cold-water inlet
IMPORTANT: use the certified piping that resist to pressure and temperature of the
equipment.
•
Not using a well calibrated relief valve or an air tube could result in excess water
pressure in the system, which could damage the installation and the heater.
•
The cold-water inlet connection is indicated with a blue plug, and the hot water
outlet connection has a red plug.
•
Under no circumstances must the relief valve be removed, nor its correct operation
be canceled in the
•
closed system; and the air tube installation must not be omitted at the hot water
outlet in the open system. Otherwise, an excessive water pressure increase
could damage the installations or the heater. This damage is considered out of
warranty and voids it, because of being an outside cause.
•
To fill the heater, open the supply valve on the cold-water supply pipe. Open a
hot water tap slowly (preferably the shower) to allow air to exit the heater and
the pipe. A continuous water flow at the hot water tap indicates that the heater
is full of water..
CAUTION!
The electrical installation must be carried out by one of our CALOREX SERVICE specialized
technicians, because this is a dangerous procedure.
Union Nuts
(not included)
Hot water outlet
FIG.6