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Triple Solar assembly instruction PVT heat pump panels March 2020
Attention:
Always place the expansion vessel in the source circuit on the suction side of the pump, and as
close to the pump as possible.
Attention:
It is not recommended to use automatic air vents in the source circuit, as these become
unreliable in the long run when the condensate freezes and may leak. However, there is an
automatic air vent in the expansion vessel connection group. Here there is less variation in
temperature
Filling medium
•
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
•
The heat pump switches off automatically outside this temperature range.
•
Triple Solar supplies a water antifreeze mixture consisting of 35% ethylene glycol (TYFOCOR from
Tyfo).
•
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.
•
Observe the supplier's instructions regarding concentration ratio, toxicity and safety.
•
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:
•
In the suction side of the system. This is in the warm side of the well! (see diagram in figure 8.4-
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
•
The thermostatic mixing valve must be set to 25 °C or setting 4 on the Esbe mixing valve (this
applies to NIBE heat pumps).
