Connection Of An Independent Hot Water Tank - REMEHA Calenta 25s Installation And Service Manual

Calenta 25s - 28c - 35s - 40c
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040412 - 7600585-01
4.5.3.
The standard version of the heating-only type of boiler is fitted with a
command for regulation of the hot water tank circuit. The command
is adjusted to switch preferentially to the hot water tank circuit. This
gives priority to the hot water tank when simultaneous requests for
heat come from the hot water tank and the central heating. The
indirectly heated calorifier can be connected using an internal or
external three-way valve.
Internal three-way valve
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The boiler connection kit must be used to install the three-way valve
in the boiler (Accessory). The three-way valve (230 V) is controlled
by the boiler control unit of the boiler.
¼ For the installation or mounting of any accessories, refer to the
mounting instructions delivered with the accessories in question.
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T004865-A
Connection of an independent hot water
tank
Boiler
Independent hot water tank
DHW sensor
Air vent kit of the hot water tank
Safety unit
Expansion vessel
Heating-Installation
3-way valve
A safety unit is installed at the point where cold water
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arrives at the hot water tank to prevent backflow or
overpressure.
The central heating pipes for the boiler circuit must be
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in Ø 22 mm (From Ø 15 mm to Ø 22 mm at the boiler
itself).
4. Installation
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