Viessmann VITODENS 200 - Adjustment of Outside Temperature Climazone

37
Adjustment of outside 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 23 / -5 14 / -10 5/-15 -4 / -20
Flow Temperature Climazone ºF / ºC 158 / 70 158 / 70 158 / 70 158 / 70
Normal Room Temperature ºF / ºC 68 / 20 68 / 20 68 / 20 68 / 20
Note: Adjusting the Outside Temperature Climazone Setpoint adjusts the slope of the curve. Maximum supply
temperature calculation is based on outdoor temperature.
The adjustment of the outside temperature climazone setting 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.
An adjustment from -4ºF to 14ºF / -20ºC to -10ºC increases the slope of the line and therefore recalculates a
higher supply temperature with respect to a smaller change in outdoor temperature. The reverse of this is true
to a maximum of -4ºF / -20ºC.
An adjustment of this setting takes place on the horizontal 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
°F
°C