Functions Of The Dhw Circuit; Dhw Heating In The Storage Tank System (Anl 1 To 3) - Samson TROVIS 5474 Mounting And Operating Instructions

Functions of the DHW circuit

7 Functions of the DHW circuit
Only systems Anl 1 to 3 have their own DHW heating (DHW heating in storage system with
Co5 -> Fb13 = ON).
The systems Anl 4 to 7 do not have their own DHW heating; they are, however, able to process
an external DHW demand (-> section 7.4) and to reduce an excessively high flow temperature
over a DHW forced charging in the external system (-> section 7.2).

DHW heating in the storage tank system (Anl 1 to 3)

7.1
SLP
Fig. 4 · DHW heating in a storage tank system
Operation with storage tank sensor SF1
The controller begins charging the storage tank when the water temperature measured at sen-
sor SF1 falls below the set point DHW demand ON . The controller stops charging the storage
tank when the water temperature in the storage tank measured at sensor SF1 reaches the value
T = DHW demand ON + Hysteresis .
The set point Boiler set point for DHW demand determines the set point at sensor VFg.
Functions
Heating circuit with DHW heating
Storage tank sensor SF1
Storage tank sensor SF2
Parameters
Boiler set point for DHW demand
DHW demand ON
Hysteresis
44
EB 5474 EN
WW
SF1
ZP
SF2
KW
WE
OFF
OFF
OFF
WE
65 °C
40 °C
5 °C
SLP Storage tank charging pump
SF1 Storage tank sensor 1
SF2 Storage tank sensor 2
ZP Circulation pump
WW Hot water
KW Cold water
Configuration
Co5 -> Fb13 = ON
Co4 -> Fb03 = ON
Co4 -> Fb04 = OFF
Parameter level / Range of values
PA4 / 20 to 120 °C
PA4 / 20 to 90 °C
PA4 / 0 to 30 °C