27
STANDARD PANEL BOARD FOR TS/3P-DUO
(code nr. 21076 - for TS/3P DUO 360 to 1200)
5
5.1 - FUNCTIONS
DESCRIPTION
Through the main switch 11 the panel board
and all the equipments connected to it will
be under power.
The switches 12 & 14 switch On and OFF
the power to the burners.
The switch 13 switch ON and OFF the power
to the C.H. pump.
With the thermostats 32 & 33 the working
temperature of the boilers can be adjusted.
These thermostats are provided with a DPDT
contact, for the control of a two stage burner.
The differential between the switching points
of the two double pole is 6°C (not adjustable).
The minimum thermostats, accessible through
the opening of the panel board cover, switches
OFF the C.H. pump during the reacing of
the steady state and up to the obtention of
30 °C within the boilers.
In case of three phase burner and/or C.H.
pump with a current higher than 3A, convenient
relays have to be foreseen between these
ones and the panel board.
11 Illuminated main switch
12 Burner switch 1
st
boiler
13 C.H. pump switch
14 Burner switch 2
nd
boiler
15 Free switch - not used
31 High limit thermostat 1
st
boiler
32 Working thermostat 1
st
boiler
33 Working thermostat 2
nd
boiler
35 High limit thermostat 2
nd
boiler
41 General fuse (4A)
42 Thermometer 1
st
boiler
43 Thermometer 2
nd
boiler
fig. 30
On the electrical supply line to the boiler a
switch with fuses is to be foreseen.
