96
EQJW146F002 EN
Functions of the DHW circuit
Parameters
WE
Parameters: value range
Hysteresis**
5.0 °C
PA4 > P03: 0.0 to 30.0 °C
Parameters
WE
Parameters: value range
Charging temperature boost***
10.0 °C
PA4 > P04: 1.0 to 50.0 °C
Lag time for storage tank charging pump 1.0
PA4 > P06 x Valve transit time: 0.0 to 10.0
*
Parameters serve as limitation of the adjustment range for the DHW temperature to be set at the rotary switch
** Deactivation value T = 'DHW temperature' + 'Hysteresis'
*** Charging temperature T = 'DHW temperature' + 'Charging temperature boost'
7.1.1
DHW circuit additionally controlled by a globe valve
In system Anl 11.1, the following version with globe valve can be configured instead of the
three-way valve control in the DHW circuit:
KW
WW
SF1
VF2
ZP
SLP
Rk2/Y2
RK2/Y2 Control circuit/valve 2
SLP
Storage tank charging pump
SF1
Storage tank sensor 1
VF2
Flow sensor 2
ZP
Circulation pump (DHW)
WW
Hot water
KW
Cold water
Fig. 6: Schematics of a storage tank system with a globe valve for return flow temperature limitation
Globe valve and flow sensor VF2 are used exclusively for return flow temperature limitation
in the schematics shown above. The pre-control circuit provides at least the same flow tem-
perature as in the standard schematic version which is calculated from 'DHW temperature set
point' + 'Charging temperature boost' + 'Boost set point (pre-control circuit)'.
The functions and parameters of the DHW heating in the storage tank system are upgraded
by the following settings:
Functions
WE
Configuration
Return flow control
0
CO4 > F20 - 1
Parameters
WE
Parameters: value range
Max. return flow temperature
65.0 °C
PA4 > P07: 20.0 to 90.0 °C
