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

SDC / DHC 

Hydraulic Components 

EN2H-0221GE51 R0808 

233 

Each heat generator has its own switching differential. The 
cascade switching differential must be set in such a way that it is 
always larger than the switching differential of any individual heat 
generator.  

 

The afterheating characteristics of the boilers used must be taken 
into account when rating the heating system. The cascade switch-
on delay is used to adjust the system to the start-up delays of the 
individual boilers. When does the heat generator deliver its 
energy into the system after being switched on (start-up phase, 
pre-running time)? The appropriate setting is the maximum delay 
time of the boilers in the system.  

 

To prevent all heat generators switching off simultaneously if the 
set cascade switching differential is exceeded, the run-down of 
heat generators is controlled by the switch-off delay. The setting 
has to be adjusted to the afterheating characteristics of the heat 
generators. 

 

To ensure the balanced utilisation of the heat generators within a 
cascade, a runtime-dependent leading stage swap can be 
activated.  

After the set operating time of the presently leading heat 
generator has passed, the system switches to the heat generator 
with the next higher bus address. 

Stage swap can only be executed between several central 
devices. It cannot be applied if several condensing boilers are 
switched by a single central device. 

 

The leading cascade stage can still be set manually to any 
existing stage even when automatic stage-sequence switching is 
disabled. 

 

Changing the heat generator type within the central device at 
address 10 leads to an automatic reset of the leading stage to the 
first heat generator.