Part 2: Overview of display values and settings Expert area
43
Hot water
Designation Value range Default IV
DHW RELIEF 00, 01 (OFF/ON) 01 = ON
PARALLEL DHW *) 00, 01, 02, 03 01
T-HS DHW 00 K – 50 K 20 K
HYST DHW 5 K – 30 K 5 K
DHW FOLLOWUP 00 min – 30 min 00 min
THERM INPUT 00, 01 (OFF/ON) 00 = OFF
WALL HUNG 00, 01 (OFF/ON) 00 = OFF
LOAD THROUGH 00. 01 (OFF/ON) 00 = OFF
RETURN Exit level using Ä
DHW RELIEF(Charge pump lock)
The charging pump is not switched until the heat generator
temperature exceeds the storage tank temperature by 5 K.
It is switched off when the heat generator temperature
drops below the storage tank temperature. This prevents
the storage tank from being cooled by the heat generator
when hot water preparation starts.
PARALLEL DHW (Pump parallel running)
*) Function with [CoCo2 index03] => 02 = 03;
with CoCo1/CoCo2 (< index 03) => 01 = 00 and 02 = 03
00 => Hot water priority operation: The heating circuits are
blocked during hot water preparation. The mixers close
and the heating circuit pumps switch off.
01 => HW partial priority: The heating circuits are blocked
during hot water preparation. The mixers close and the
heating circuit pumps switch off. The mixer circuits are en-
abled again when the heat generator has reached the
temperature of hot water set temperature + heat generator
superheating [T-DHW + T-HS DHW]. If the heat generator
temperature drops below the enable temperature by the
switching hysteresis [HYST DHW], the mixer circuits are
blocked again.
02 => Pump parallel running: Only the direct heating cir-
cuits are blocked during hot water preparation. The mixer
circuits continue to be heated. The hot water preparation is
extended by this function.
03 => Pump parallel running also for the direct heating cir-
cuit: During hot water preparation all heater circuits contin-
ue to be heated. The hot water preparation is extended by
this function. When the heat generator temperature ex-
ceeds the maximum flow temperature of the direct heating
circuit by 8K, the heating circuit pump for this circuit is
switched off (overheating protection). The heating circuit
To Next Page
Loading...