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Winter/Summer
Compensation
Setpoint
Compensation
(K)
5
4
3
2
1
0
-30
-1
Winter Authority
-2
Slope (-0,1)
-3
Winter Authority
-4
Limit (-3 K))
-5
When the controller is connected to a supervisory system, the winter
and/or summer compensation modes may be enabled. The supervisory
system must be programmed to set the outdoor air temperature via the
communications bus on a periodic basis. After a power interruption the
winter and summer compensation modes are temporarily disabled until a
new outdoor air temperature value is received. When the outdoor
temperature falls below the winter set point, the working set point of the
controller will be raised or lowered in accordance with the winter
authority slope. When the outdoor temperature rises above the summer
set point the working set point of the controller will be raised in
accordance with the summer authority slope. The maximum amount of
compensation is limited by the Winter Authority Limit and the Summer
Authority Limit.
The effect of the winter and summer compensation on the controller set
point is shown below.
Winter Authority Slope
(+0,1)
-20
-10
0
Figure 6: Winter/Summer Compensation
Summer Authority Limit
(+5 K)
10
20
30
Winter
Summer
Setpoint
Setpoint
(10°C)
(24°C)
Summer Authority
Slope (+0,2)
Outdoor Air
Temperature
40
50
Technical Bulletin—TC-9102
(°C)
tc2winsu.drw
9
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