Admissible Lengths Of The External Connections To The Burner; Automatic Deactivation Of The Pre-Heating (Only For Suitable Applications) - Riello MO550-BWG Instrucciones De Instalación, Uso Y Mantenimiento

3.7.27 Admissible lengths of the external
connections to the burner
Outlet cables of the burner
Mains electric power supply
Heat request thermostat
1st - 2nd stage adjustment
thermostat
Hour counter
External lockout indicator
Remote reset
In the event of burner applications with remote
control commands greater than those indicated in
Tab. F, insert the relay command devices
(230Vac) with contacts placed near or not more
WARNING
than the maximum indicated lengths.
3.8

Automatic deactivation of the pre-heating (only for suitable applications)

It is possible to disable the pre-heater function in automatic
mode by pressing the remote reset button.
Sequence of pre-heating
deactivation
Allow the disabling of the pre-heating
only when there is no lockout or fault
Permit the disabling of the pre-heating
using the remote reset button.
Supply the burner and simultaneously
keep the reset button pressed for 3 sec-
onds.
Release the remote reset button within
3 seconds.
The burner will start disabling the pre-
heating only if the remote reset button is
released within 3 seconds.
When the pre-heating is disabled, the pre-heating remains off
until:
- a lockout occurs
- the main supply voltage is interrupted
- there is a stop due to intermittent operation.
The deactivation of the automatic pre-heating is not lost if the
switching off test is activated or if the heat request thermostat
opens.
20138365
Electrical data and operating times
Maximum
length
Identification
permitted
(metres)
L1 (L), N 20
TL (T1,T2) 20
TR 1
B4 3
S3 20
R (RS) 20
Tab. F
Colour of the LED
of the button
-
-
RED
OFF
-
Tab. G
14
GB