10
Regulation of the hydraulic pressure of the supply device
Pressure indicated on the water-gauge, when the heating system is filled being cold, has to be 1,0 bar.
If pressure of device decreases to minumum values, boiler display shows error F 37. Increase pressure
in device to value higher than 1,0 bar by using the filling tap (See 1). Manometer indicating pressure
without electrical connection is placed in the bottom part of the boiler.When the hydraulic pressure is
recovered, boiler activates 120 seconds long ventilation cycle displayed as „FH“. Afterwards it is
always necessary to close the filling tap (See 1).
Connection to the DHW tank of the KT Plus, KT small Plus boilers
Control electronics of the boiler serves to control the external DHW tank. Make hydraulic
connections following the scheme. Make electrical connections following the instructions in the
electrical scheme (Page 13). It is always necessary to instal thermal probe for the tank. Boiler control
system detects presence of the thermal probe and automatically configures itself, activates display and
appropriate control of DHW warming.
Scheme of connection to external tank:
8
DHW outlet
9
DHW inlet
10
Inlet into the heating system (CH flow connection)
11
Return flow from the heating system (CH return
connection)
209
Inlet into the exchanger of DHW warming
210
Return flow from the exchanger of DHW warming
