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

Hydraulic Components 

SDC / DHC  

156 EN2H-0221GE51 

R0808 

"District Heating" menu, parameter 01: Setting range is extended 
to OFF,  
–10 ... +50. 

 

Setting OFF means district heating is deactivated. 

District heating valve permanently in STOP position when 
deactivated. 

The switch-over of the heat generator is controlled from the 
"District Heating" menu, parameter 01. 

 

If the return max. limit is active and the district heating valve is 
opened less than 5%, the district heating valve is opened to 10% 
every 10 minutes for heat demand, so as to obtain an adequately 
precise return temperature measurement. This assures that the 
limit sensor is adequately supplied in the return. 

 

The requirement for this function is the heat meter, whose 
information (pulse per volume or pulse per thermal output) is 
called upon for this limit. Calibration of the thermal output and the 
volume flow with parameters 12 and 13 allows calculating the 
entities thermal output and volume flow. These values are 
displayed with the 

¤

 key. Setpoint limits for thermal output and 

volume flow are entered under parameters 14 and 15. 

This limitation function operates as PI controller above the 
setpoint value, using the same parameters as the temperature 
control function. 

The values are independent of the outside temperature. The heat 
flow is derived from a volume signal in the following way: