Gas Circuit; Hydraulic Circuit; Electrical Connections; Commissioning The Boiler - REMEHA Calenta 25s Installation And Service Manual

Calenta 25s - 28c - 35s - 40c
C
5.3

Commissioning the boiler

040412 - 7600585-01
5.2.2.

Gas circuit

WARNING
Ensure that the boiler is switched off.
1. Open the main gas supply.
2. Unscrew the two screws located under the front panel by a quarter
turn and remove the panel.
3. Tilt the control box forwards by opening the holding clips located
at the sides.
4. Check the gas supply pressure at the pressure outlet C on the gas
valve unit.
WARNING
¼ To ascertain the gas types permitted, see chapter:
"Equipment categories", page 9
5. Check the tightness of the gas connections made after the gas
valve unit in the boiler.
6. Check the tightness of the gas line, including the gas valves. The
test pressure must not exceed 60 mbar.
7. Purge the gas supply pipe within the boiler by unscrewing the
pressure outlet on the gas block. Tighten the measurement point
when the pipe has been sufficiently purged.
8. Check the tightness of the gas connections in the boiler.
T001518-B
5.2.3.

Hydraulic circuit

4 Check the condensate discharge siphon; it must be filled with
clean water up to the mark.
4 Check that there are no leaks on the hydraulic connections.
5.2.4.

Electrical connections

4 Check the electrical connections, particularly the earth.
4 Check the electrical connections to the thermostat and the other
external controls.
1. Tilt the control box upwards again and fasten it using the clips
located at the sides.
2. Open the main gas supply.
3. Open the gas valve on the boiler.
4. Insert the boiler plug into an earthing socket.
5. Turn on the boiler using the on/off switch.
5. Commissioning
55