Viessmann VITODENS 200 - Adjustment of Flow Temperature Climazone

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Adjustment of flow temperature climazone
Sample graph (with 1.0 curvature)
Adjustment A B C D
Outside Temperature Fixed Point ºF / ºC 68 / 20 68 / 20 68 / 20 68 / 20
Flow Temperature Fixed Point ºF / ºC 68 / 20 68 / 20 68 / 20 68 / 20
Outside Temperature Climazone ºF / ºC -4 / -20 -4 / -20 -4 / -20 -4 / -20
Flow Temperature Climazone ºF / ºC 167 / 75 149 /65 41 / 55 113 / 45
Normal Room Temperature ºF / ºC 68 / 20 68 / 20 68 / 20 68 / 20
Note: Adjusting the Outside Temp Climazone setpoint adjusts the slope of the curve. Maximum supply
temperature calculation is adjusted based on outdoor temperature.
The adjustment of the flow temperature climazone settting changes the slope of the curve with respect to cold
outdoor temperatures. By increasing or decreasing the setting, the slope of the curve is recalculated and will
therefore recalculate the supply temperature setpoint with respect to changes in outdoor temperature.
This setting does not limit the maximum calculated temperature, instead it sets a given supply temperature with
respect to the outside temperature climazone. If the outdoor temperature continues to get cooler, the flow
(supply) temperature will continue to calculate up to the maximum setting.
An adjustment of this setting takes place on the vertical axis as shown in the example above.
5285 565 v1.35285 565 v1.3
20
68
15
59
10
50
25
77
30
86
35
95
40
104
5
41
0
32
-5
23
-10
14
-15
5
-20
-4
176 80
158 70
140 60
122 50
104 40
86 30
68 20
50 10
-25
-13
-30
-22
Outdoor Temperature
A
B
C
D
Supply Temperature
°C
°F
°C°F