16
Installation instructions
fig. 14
Key:
Pr = Recirculation pump (failure to install it will void the warranty)
VM = Zone mixing valve ((failure to fit or to manage it will void the warranty)
Pi = C.H. pump
VE = Open expansion tank
IR = Central Heating System
PS = D.H.W. recirculation pump
PC = Loading pump of D.H.W. storage tank
TA = Room thermostat
TB = D.H.W. thermostat
Ipr = Recirculation pump switch
fig. 13
It is recommended to insert on the
pump supply cable a minimum
thermostat with its bulb inserted into
the bulb holder welded to the rear
plate of the boiler FOKOLUS, to
enable the operation of the C.H.
pump, only when the temperature in
the boiler will exceed the threshold of
65 ° C (minimum temperature).
The same thermostat will turn off the
C.H. pump if the boiler temperature
falls below this limit, in order to
safeguard the life of the boiler,
preventing the formation of
condensate.
The loading pump of the D.H.W.
storage tank works with priority on the
C.H. pump
Please note that to avoid or, at least, to
limit the formation of condensate
within the boiler, it is necessary to
install a recirculation pump, and,
failure to install it, will void the
warranty
.
Heating system with temperature regulation via a manually controlled mixing valve.
Domestic hot water production via a coil type storage tank or plate heat exchanger with separate system and
dedicated loading pump
