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V-ELECTRICALDIAGRAM
VI-PUTTINGINTOSERVICE
COLDFILLINGPRESSUREOFTHEINSTALLATION
Before filling the installation, adjust the
nitrogen pressure of the expansion tank
according to the height of the installation. You
obtain the value of this nitrogen pressure
(P
[bar]) by dividing the manometric height
tank
of the installation by 10 and adding a margin
of 0.2 to 0.5.
E.g. For an installation height of 6 m: P
(6/10+0.3) = 0.9 bar
VII - USE - IGNITION
- place the boiler under pressure by means of
the general cut-off switch
- set the control thermostat to the
temperature desired
CONTROL PANEL
4
1
8
Burner
L
N L
1
2 3
P
Safety limit
with manual
reset
SP-051 HE
The pressure with which the water of the
installation will come to be pushed against
the diaphragm of the tank must be such that
the diaphragm is slightly cambered by the
action of the water (P
the above example, the cold water filling
pressure of the installation must then be
adjusted to approximately:
=
tank
P
= 0.9 + 0.3 = 1.2 bar
filling
- after bringing the installation up to
temperature, again completely bleed of water.
ATTENTION
Before ignition, open the bleed valves, slowly
refill the installation,
2
3
N L
L
230 V - 50 Hz
°C
L
N
4 5
6
1
4
Main switch
1
2
2
5
Boiler
thermostat
NT 174 HE/2
+[0.2 to 0.5]). In
tank
1) Main switch
2) Boiler Thermometer
3) Boiler Thermostat
4) Safety limit with manual reset (110°C)
Filling the boiler with water must be complete.
Non-observance of this instruction will
invalidate the guarantee.
and let the air out until the water appears,
then close the bleeds.
Check for leaks.
Check the connection of the smoke flue. Set
the circulator speed according to the pressure
losses of the heating circuit.
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