Domestic Hot Water (Dhw); Lighting And Shutdown - Ferroli SUN P N Instrucciones De Uso, Instalación Y Mantenimiento

Indication during operation
Heating
A heating demand (generated by Request Contact, Room Thermostat or Remote Timer Control) is indicated by activa-
tion of the radiator (detail 1 - fig. 1).
The multifunction display (detail 4 - fig. 1) shows the heating sensor temperature and, during heating standby time, the
message "d2".

Domestic hot water (DHW)

A DHW demand (generated by drawing hot water) is indicated by activation of the faucet (detail 6 - fig. 1).
The multifunction display (detail 4 - fig. 1) shows the DHW sensor temperature and, during DHW standby time, the mes-
sage "d1".

1.3 Lighting and shutdown

Burner not electrically powered
B
The frost protection system does not work when the power and/or gas to the unit are turned off. To avoid dam-
age caused by freezing during long shutdowns in winter, it is advisable to drain all water from the boiler, the
DHW circuit and the heating system water; or drain just the DHW circuit and add a suitable antifreeze to the
heating system, as prescribed in sec. 1.3.
30
fig. 2
fig. 3
fig. 4 - Burner not electrically powered
cod. 3541F710 - Rev. 00 - 05/2017
SUN P N
EN