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

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Safety instructions 
SDC / DHC  
14 EN2H-0221GE51 
R0808 
2.4  Connection of accessory parts  
 WARNING 
According to VDE 0730, a separator for each mains terminal 
is to be provided in the voltage supply to the control 
equipment. Observe the local regulations regarding 
grounding and zeroing. 
As soon as the mains voltage is applied to terminals 21, 22, 
2, 6, 12 and 18, headers X3 and X4 can also carry mains 
voltage. 
If the heating circuit and hot-water loading pumps do not 
have an On / Off switch, but manual switch-on and switch-off 
capability is still desired, the appropriate switches must be 
installed by the customer. All accessory parts (sensors, 
selectors etc.) are to be connected to the respective circuit 
diagram. 
 
2.5  Maintenance and cleaning 
The controller is maintenance-free. The device can be cleaned 
externally with a moist (not wet) cloth.