Technical Description; General Description; Main Parts - REMEHA Calenta 25s Installation And Service Manual

3. Technical description

3 Technical description
3.1

General description

3.2

Main parts

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High-efficiency wall-hung condensing gas boilers
4 High efficiency heating.
4 Low pollutant emissions.
Boiler type:
4 Calenta 25s - 35s: Heating only (Production of domestic hot water
4 Calenta 28c - 40c: Heating and domestic hot water production.
Calenta 25s - 28c
1 21
1
2
20 3
4
5
19
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18
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T000822-D T000822-B
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can be ensured by a separate hot water calorifier).
Flue gas outlet
Casing/air box
Outlet for measuring combustion gases
Mixer pipe
Heating flow hose
Air intake silencer
Box for the control PCBs (accessory)
Combined venturi and gas valve unit
Flow end hydroblock
Safety valve outlet pipe
Siphon
Instrument box
Shunt pump
Return end hydroblock
Plate heat exchanger (DHW) (Only on models with
domestic hot water production)
3-way valve (Only on models with domestic hot water
production)
Condensate receiver tank
Fan
Heat exchanger (Central heating)
Ignition/ionization electrode
Air intake
Calenta 25s - 28c - 35s - 40c
040412 - 7600585-01