Honeywell EN2H-0221GE51 R0808 User Manual

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Hydraulic Components 
SDC / DHC  
220 EN2H-0221GE51 
R0808 
 ATTENTION 
No global controller function for data bus system with 
several central devices. 
 
Control modes and switching time settings are not effective when 
the demand contact is activated. The respective heating circuit 
only responds to requests from the demand contact. 
The control modes manual, emission measurement with safety 
temperature limiter check and screed function are of higher 
priority. 
System information 
An open demand contact is signaled by the string "disable" in the 
status display; a closed contact is identified by the string 
"demand". 
 
A variable input that has been defined as a demand contact acts 
on the heating circuit in the following way: 
•  Variable input open: No demand  
The heating circuit is switched of unconditionally (no frost 
protection, no standby function). 
•  Variable input short-circuited: Demand  
The heating circuit is in control mode HEATING (continuous 
heating) and works according to its parameter settings. 
 
 ATTENTION 
Customers must take appropriate frost protection measures 
for the respective control circuit. 
 
This function can be activated up to three times (once for each 
available variable input). 
 
Contact function