TECHNICAL DESCRIPTION MULTICAL
®
401
5512-091 GB/02.2008/Rev. J1
33
Figure 20 Figure 21
Figure 22
E=3 Cooling tariff (t)
If the actual cooling (
t), in C, is lower than TL2, but higher than TL3, the thermal energy is counted in TA2
and the main register. If the actual cooling gets lower than TL3, the thermal energy will be counted in both
TA3 and the main register.
t TL2
Counting only in main register
TL3 t TL2
Counting in TA2 and main register
t TL3
Counting in TA3 and main register
Table 11
During set-up of tariff limits TL3 must naturally be lower than TL2, as shown in below example with
TL2=30.00
C and TL3=20.00C:
Figure 23 Figure 24
The cooling tariff can be used as the basis for weighted user payment. Low cooling (small difference
between flow and return temperatures) is uneconomical for the heat supplier.
E=4 m
3
tF + m
3
tR
TA2 is accumulated by the product of m
3
tF (integer m
3
x integer C) and TA3 is accumulated with the
product of m
3
t R.
The resolution is the same irrespective of the flow sensor size (qp 0.6…qp 15 m
3
/h).