Thermia Calibra Cool, Installation Manual

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1.9 Maximum length of collectors, BW model with inbuilt brine pump only.
Caution
The collector length must be designed for energy extracted from the
borehole/ground, which is required for the operation of the heat
pump.
In the figures below you can see what approximate operating brine ∆T you can achieve according to collector length and heating ca-
pacity.
The collector lengths may be applied independently on which heat source is used for the collector circuit (vertical/horizontal). In most
applications a ∆T 3-5
° K is desired for most efficient running.
The lengths of the collectors are based on ethanol 30% at 0°C. (PEM40)
Calibra Cool 7 BW
200
300
400
500
600
700
800
900
1000
2,00 3,00 4,00 5,00 6,00 7,00 8,00
C
o
ll
e
c
to
r
Le
n
g
th
m
Hea ng Capacity kW
- B0W35 with PEM40x2.4
D
T = 3 K
D T = 3.5 K
200
300
400
500
600
700
800
900
1000
2 3 4 5 6 7 8
C
o
ll
e
c
to
r
Le
n
g
th
m
Hea ng Capacity kW
- B0W55 with PEM40x2.4
D
T = 3 K
Calibra Cool 7 WW has no inbuilt brine pump, and therefor no collector length can be given.
Installation Guide Calibra Cool
Thermia AB BWCC01IG0102
7