Adjustment Of Flow Temperature Climazone - Viessmann Vitodens 200 Operating Instructions And User's Information Manual

Adjustment of flow temperature climazone

Sample graph (with 1.0 curvature)
°F °C
176 80
158 70
140 60
122 50
104 40
86 30
68 20
50 10
40 35
104 95
Adjustment
Outside Temperature Fixed Point
Flow Temperature Fixed Point
Outside Temperature Climazone
Flow Temperature Climazone
Normal Room Temperature
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.
38
30 25 20 15
86 77 68 59
Outdoor Temperature
ºF / ºC
ºF / ºC
ºF / ºC
ºF / ºC
ºF / ºC
10 5 0 -5
50 41 32 23
A B
68 / 20 68 / 20
68 / 20 68 / 20
-4 / -20 -4 / -20
167 / 75 149 /65
68 / 20 68 / 20
A
B
C
D
-10 -15 -20 -25
14 5 -4 -13
C
68 / 20 68 / 20
68 / 20 68 / 20
-4 / -20 -4 / -20
41 / 55 113 / 45
68 / 20 68 / 20
°C
-30
°F
-22
D