7
General inf
ormation
2.2 - DESCRIPTION OF COMPONENTS
Corpo mantellato
e coibentato
Uscita fumi
Manometro
Manometro
Pressostato differenziale
Porta anteriore
Quadro elettrico
Cased body
and insulated
Pressure gauge
Pressure switch differential
Pressure gauge
Front door
Inspection door
smoke chamber
Control panel
2.3 - SAFETY DEVICES AND
CONTROL
The DIATHER generators are equipped with the following safety
and control devices:
DIFFERENTIAL PRESSURE SWITCH
Connected between oil inlet and outlet (scale 0.5 ÷ 4 bar), com
-
plete with valves and pressure gauges.
The differential pressure switch is intended as a safety compo
-
nent since it bocks the burner if the pressure difference drops
below the pre-set value.
Differential pressure switch calibration
Divide by 13 the oil side load loss value (see oper
-
ating data table) and round down the result. From
this subtract 0.4 and you have the pressure in bar
to set on the pressure switch.
The differential pressure switch installed as standard on the
DIATHER generators is the DANFOSS RT 260A model; to cal
-
ibrate, carefully follow its manufacturer's instructions provided
with the generator documentation.
Following the intervention, restore the pressure switch at a pres
-
sure of 0.3 bar higher than the calibration (fixed differential).
WORK AND SAFETY THERMOSTATS
N°1 Safety thermostat placed on the flow pipe, which locks out
the generator in case the operating temperature is exceeded.
T alarm = 300°C
N°1 Thermoregulator placed on the flow pipe, for the ignition,
shutdown and burner adjustment.
T 1
st
stage = 280°C (**)
T 2
nd
stage = 250°C (**)
(**) Factory setting (adjustable)
N°1 Thermoregulator placed on the return pipe for the measure
-
ment of the return temp.
T return = 150°C
PRESSURE GAUGES
Two stainless steel and laminated glass pressure gauges with
scale adjusted to the boiler design pressure, complete with
steel shut-off valve.
Respectively positioned on:
- oil flow
- oil return
The pressure gauge is installed on appropriate tool unit
equipped with siphon fitting for the dispersion of heat.
ATTENTION
Any disassembly/replacement of the devic
-
es listed must be performed with the boiler
off, depressurised to atmospheric pressure
and suitably cooled; the manufacturer is not
liable for damages to persons and/or prop
-
erty or animals due to non-compliance with
this requirement.
