Honeywell EN2H-0221GE51 R0808 ユーザーズマニュアル

Hydraulic Components 

SDC / DHC  

130 EN2H-0221GE51 

R0808 

The boiler temperature is maintained according to the set 
minimum temperature, independent of demands or deactivating 
control modes. 

 

5.2.4 "DHW" menu, pg. 77 

 

In order to protect the heat generator against overheating, the 
controller is equipped with an electronic maximum temperature 
limit. It shuts off the burner if the temperature in the heat 
generator exceeds the limit value. 

The burner is switched on again if the temperature in the heat 
generator falls below the limit value by half of the burner switching 
differential plus 2 K. 

 

5.2.4 "DHW" menu, pg. 77 

 

•  If the boiler temperature BT

actual

 is less than or equal to the 

parameter setting 27 (BT

min

 - HC), the heating circuit pumps 

switch off (DHCP, SFP, MCP). The mixed heating circuit 
valves close. 

•  If BT

actual

 is greater than BT

min 

- HC + SC

min 

- HC, the heating 

circuit pumps and mixed heating circuit valves are enabled 
again. 

 

There are various ways in which the heat generator can react to a 
malfunction of the heat generator sensor: 

 

Burner switch-off in case of a faulty heat generator sensor 

A fault message appears in case of a short-circuit or interruption 
of the sensor; the burner will be switched off. 

External burner switch-off 

In case of the interruption of the sensor the burner is switched off 
without a fault message. It is used, for example, for external