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

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SDC / DHC 
Hydraulic Components 
EN2H-0221GE51 R0808 
215 
7.3.8  Hydraulic buffer relief (HBR)  
AB
A
B
M
HPE
PF
KSPF
1
 
 
1 Buffer 
tank 
 
Using a 3-way switching valve (output active), hydraulic buffer 
relief (HBR) causes temporary intake into the upper region of the 
buffer tank, if that region has not reached its setpoint temperature 
yet, so that connected heating or hot water circuits receive priority 
supply of energy.  
When the buffer temperature exceeds the buffer setpoint by 2.5 
K, the 3-way switching valve is hydraulically coupled to the lower 
region of the buffer tank so that the entire buffer tank can be 
loaded. Another switch-over to the upper region of the buffer tank 
is initiated as soon as the buffer temperature undershoots the 
buffer setpoint temperature by 2.5 K. 
 
Partial buffer loading with priority supply for heating and hot water 
for all types of loading control modes (see buffer control modes 1, 
2 and 5) 
 
Function
Application