SERO BWA-SS-10 User Manual - page 21
21
Adjustment of Part of the Heat Curve
At outdoor temperatures between -5°C and +5°C part of the heat curve may need adjusting if the indoor
temperature does not stay at the preset ROOM value. For this reason, the control system includes a
function adjusting the curve at three outside temperatures: -5°C, 0°C, +5°C. This function will allow you
to increase or reduce the feed line temperature, without affecting the heat curve, at three specific outdoor
temperatures. If, for example, the outside temperature is -5°C, the feed line temperature will
change gradually in the outdoor temperature range of 0°C to -10°C, maximum adjustment being reached
at -5°C. The diagram below shows an adjusted CURVE -5. The point of maximum adjustment is clearly
visible.
As we have seen, you can choose to adjust the heat curve at three specified out- side air temperatures:
-5°C,0°C and +5°C. The feed line temperature can be changed by plus/minus 3 degrees.
When outdoor ambient temperature is 5
ć, this setting is available to change the feed water temperature,
it is adjustable by operator: heat curve is not change (the slope is no change), but the point near 5
ć
(from 0
ć to 10ć), curve can be change step by step; the variable is the biggest at 5ć, it is f3ć
.
When outdoor ambient temperature is 0
ć,this setting is available to change he feed water temperature,
it is adjustable by operator: heat curve is not change ( the slope is not change), but the point near 0
ć
(from -5
ć to +5ć), curve can be change step by step; the variable is the biggest at 0ć,it is f3ć.
When outdoor ambient temperature is -5
ć,this setting is available to change he feed water temperature,
it is adjustable by operator: heat curve is not change ( the slope is not change), but the point near -5
ć
(from 0
ć to -10ć), curve can be change step by step; the variable is the biggest at 0ć,it is ±3ć.
CURVE
C
C
C
0
5
-5
24
32
40
48
56
64
18
43
3
CURVE
C
C
C
0
5
-5
24
32
40
48
56
64
18
34
0
CURVE
C
C
C
0
5
-5
24
32
40
48
56
64
18
45
0
3.2.4