Viessmann Vitotwin 300-W - Adjusting Screed Drying

83
Function (code) Code Setting
range
Deliv-
ered con-
dition
Heat-
ing
cir-
cuit 1
Heat-
ing
cir-
cuit 2
Heat-
ing
cir-
cuit 3
"Heating curve slope" A (incli-
nation)
720 1020 1320 0.10 - 4.00 1.40
"Heating curve displacement"
B
(level)
721 1021 1321 -4.5 - 4.5 0.0
"Heating curve adaption" (Auto-
matic adjustment)
726 1026 1326 On - Off Off
Adjusting screed drying
This function allows screeds to dry dur-
ing the construction phase. For this,
always observe the details specified by
the screed manufacturer.
When the screed drying function is acti-
vated, the heating circuit pump is
switched on and the flow temperature is
held in accordance with the selected pro-
file. On completion (25 days), the heating
circuit is regulated automatically via the
set parameters.
This function comes to an end when the
set time expires or the setting is returned
to "Off".
Note
The screed drying function is only appro-
priate for heating circuits with mixers.
Observe EN 1264.
The report to be provided by the heating
contractor must contain the following
heat-up details:
■ Heat-up data with respective flow tem-
peratures
■ Max. flow temperature achieved
■ Operating conditions and outside tem-
perature during handover
First select the relevant heating circuit to
set screed drying.
"Screed drying" (code 850; 1150;
1450)
Setting Meaning/effect
"Off" Function disabled
"Functional
heating"
Passes through the first part of temperature profile A
"Curing heat-
ing"
Passes through the second part of temperature profile B
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5618 294 GB
Service