19
Display
Description
Factory setting
Setting range
"Comfort"
This function preheats the plate heat ex-
changer to ensure that DHW is available
quickly (see page 19). Sensor used: S1
Note
Using the comfort function increases the
risk of scale forming on the plate heat ex-
changer.
Off
■
On (enabled)
■
Off (disabled)
■
"Set comfort"
Only with
"Comfort ON"
:
Set temperature display for comfort func-
tion
"Set comfort" = "T DHW set" - 7 K
or with modulating set temperature:
"Set comfort" = "TDHW set mod." - 7 K
—
—
■
"Comf.hyst."
Only with
"Comfort ON"
:
Hysteresis if
"Set comfort"
is exceeded
Comfort function OFF if:
"Set comfort"
+
"Comf.hyst."
2 K
1 to 10 K
■
"Comf. speed"
Only with
"Comfort ON"
:
Primary pump speed while the comfort
function is enabled
25 %
15 to 100 %
■
"Wait.time"
Only with
"Comfort ON"
:
Blocking time for the comfort function after
it was active.
10 min
0 to 60 min
■
"Timer"
Only with
"Comfort ON"
:
Setting a time program to automatically
start the comfort function
—
—
"TDHW set modu-
la."
If the set DHW temperature
"TDHW set"
cannot be achieved at the flow temperature
sensor (S2), the
"TDHW set"
is set back
dynamically.
Setback occurs for:
T FL
≤
"T DHW set" + "
Δ
T modulat."
(T FL = actual DHW temperature)
"T DHW set mod." =
T FL - "
Δ
T modulat."
Yes (enabled)
■
Yes (enabled)
■
No (disabled)
■
"
Δ
T modulat."
Only for
"TDHW set modula. Yes"
:
Temperature differential for dynamic match-
ing (see
"TDHW set modula."
)
5.0 K
2.0 to 20.0 K
"
=
Blocking prot."
Pump anti-seizing protection:
To prevent pumps and valves from seizing
up, they are successively activated at
12:00 h every day for 4 s.
No
■
Yes (enabled)
■
No (disabled)
Starting the comfort function manually
Enable the function via
"Comfort ON"
. The comfort
function will then always be enabled.
Commissioning
Setting DHW
(cont.)
5517 095 GB
Commissioning
Содержание VITOTRANS 353
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