Caleffi solar 279 series Manuel d'installation et de mise en service - Page 5

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Installation

• R emove temperature gauge.

• R emove insulating shell.

• S lide clip to release bracket, then reposition.

• I nstall the bracket to the wall using the mounting screws supplied

in the pack (1).

Insert the unit from the front, seating the pins as shown in the

ﬁgure.

The components are fastened to the bracket automatically by the

clip (2).

• E stablish the position for installing an expansion tank (separately

purchased) at a distance allowed by the length of the hose (3).

• I nstall the piping for the entire system and connect the solar unit.

Secure the components and the pipes to the rear insulation.

Tighten all the ﬁttings.

• T he unit's threaded fittings are tightened and tested in the assembly

phase in the factory. However, use a pressure test to check for

leaks during commissioning.

• M ake the electrical connections of the system, as specified in the

solar controller instruction manual.

Apply the front part of the insulation.

Filling the system

• O pen the shut-off valve coupled with the automatic air vent,

installed at the highest point of the solar thermal system.

• O pen the shut-off and check valves, located where the temperature

gauge(s) insert.

• F ill by with a pump, using the valve (A) located at the lowest point

of the system, until air no longer comes out of the air vents. If the

solar thermal system requires the use of glycol-water solution top-

off the system using the same glycol-water mixture.

• C lose the air vent shut-off valve.

• C lose valve (A).