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Triple Solar assembly instruction PVT heat pump panels UK January 2021
Filling medium
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The source liquid must have a freezing point of -20 °C. A safety margin has been taken
into account. The maximum operating temperatures of the Triple Solar system are -12 °C
and +30 °C
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The heat pump switches off automatically outside this temperature range.
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Triple Solar supplies a water antifreeze mixture consisting of 35% ethylene glycol
(TYFOCOR from Tyfo).
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Triple Solar supplies a water-antifreeze mixture consisting of 40% propylene glycol when
connected to a cooling module. (regarding KIWA requirements)
•
Mono-propylene or bio-glycol is also possible, but these types of glycol work less well at
lower temperatures due to a higher viscosity.
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Observe the supplier's instructions regarding concentration ratio, toxicity and safety.
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Check the mixing ratio of the glycol with a refractor device. Make sure the refractor device
is suitable for ethylene or propylene glycol.
Attention:
In case of doubt about the mixing ratio of the glycol, check with a refractor device. Make
sure that the refractor device is suitable for ethylene or propylene glycol.
Installing the expansion vessel
Mounting the expansion vessel:
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In the suction side of the system. This is in the warm side of the well! (see diagram in figure
8.3-a). (This is different from continuous heating installations where the expansion vessel is
also placed in the suction side, but in the cold side).
•
As close as possible to the pump
Note that the type of expansion vessel is suitable for ethylene glycol. Often referred to with the
addition "solar".
For installations with a heat pump of 12kW or more, it is advisable to have the size of the
expansion vessel determined in consultation with the supplier. In addition to the capacity of the
heat pump, location, water content and temperature also play a role.
Connecting thermostatic mixing valve
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The thermostatic mixing valve must be set to 25 °C or setting 4 on the Esbe mixing valve (this
applies to NIBE heat pumps).
•
The supplied thermostatic mixing valve is designed to prevent too high a fluid temperature
from entering the heat pump from the source. NIBE heat pumps can operate with a maximum
fluid temperature of 30 °C. Higher temperatures will cause the heat pump to malfunction and
may even damage it.
•
If another heat pump is used, please consult with Triple Solar's technical department
beforehand.
Insulation
Switch off the heat pump to exclude the formation of condensation on the piping.
