Viessmann VITOCAL 300, Installation And Service Instructions Manual

Page: 147 / 160

Setting parameters Setting range Standard
setting Commission-
ing
Buffer cylinder pro-
gram 7-day program OFF
Fixed temperature 1 to 60 °C 50 °C
Temperature hyster-
esis 2 to 20 K 5 K
Max. temperature 1 to 70 °C 60 °C
Stop optimisation No/Yes No
Excess reaction
0 to 2 * 1
2
2. Temperature sensor No/Yes No
"Natural cooling"
Natural cooling circuit No/Yes No
Room temperature 10 to 30 °C 20 °C
Room temperature
hysteresis 0.5 to 10.0 K 1.0 K
Room temperature
control No/Yes Yes
Room temperature
hook-up slope 0 to 50 10
Level, cooling curve -15 to 40 0
Slope, cooling curve 0.0 to 3.5 1.2
Integral room tempera-
ture controller 5 to 1000 100
Minimum flow tem-
perature 1 to 30 °C 10 °C
Natural cooling with
mixer No/Yes No
Cooling mixer runtime 0:05 to 4:15 min 0:10 minutes
Mixer active zone 2.0 to 40 K 4.0 K
Mixer dead zone 0.5 to 3.0 K 1.0 K
External heat source
External heat source No/Yes No
Priority ext. heat
source No/Yes Yes
Temperature limit for
operation -50 to +50 °C 10 °C
Threshold ext. heat
source 10 to 3000 300
Delay ext. heat source 0:00 to 5:00 h 0:30 h
Reports of control parameters
(cont.)
147
Commissioning/service reports
55
92
901
GB
Service
*1
0: No reaction; 1: Draw-off only in case of critical excess; 2: Always draw-off.