36
Technical features and dimensions
fig. 32
3.18 - OPTIONAL PANEL BOARD
11 Main switch with indicator light
12Burner switch
13Mixed zone system pump switch
14Direct zone system pump switch
15Storage tank pump
31Safety thermostat
32Working thermostat
41General fuse
42Boiler thermometer
fig. 33
The main switch 11 powers the board and the equipment
connected to it.
Switches 12 and 13 control the burner and the mixed zone
system pump.
Switches 14 and 15 control the direct zone system pump and
the storage tank pump.
The thermostat adjusts the working temperature of the boi-
ler: to achieve this, the thermostat must be placed at maxi-
mum full-scale pos. 32 .
Eventual operation of the second stage of the burner will be
managed by the heat control.
The default setting of the heating controller stops the system
pump until the boiler reaches the temperature of 50°C.
The electric power line of the boiler's control board must have
a switch with protective fuses.
For use of the panel board, see the system manager instruction booklet
Ipi2 System pump 2 switch
Ipb Storage tank pump switch
Pb Storage tank pump
Pi1 Direct zone system pump
Pi2 Mixed zone system pump
Te Working thermostat
PhFase (230V ~50Hz)
N Neutral
F1General fuse (max 4A)
Ib Burner switch
IG Main switch with indicator light
Ipi1 System pump 1 switch
Tm Minimum thermostat
Ts Safety thermostat (100°C)
Vm2 Mixer valve
A Possible repetition of burner block
B Possible working hour counter stage 1
7-pole plug
TERMINALS OF KROMSCHRÖDER
HEATING CONTROLLER
Stage 2
