120
CTC EcoLogic M/L
Solar panels
8.2.5
System Types 2 and 3 - Passive cooling
If the Cooling function is defined, mixing valve Y3, charge pump G3 and
sensor B3 should be used for the cooling installation (not heating circuit
3). For details on how to connect, see the Installation and Maintenance
instructions for the cooling installation.
Fan convector
From the solar panels, the heat flow is directed to the DHW tank/buffer tank
or to the ground heating coil in order to recharge the bedrock/ground once
the DHW tank is fully charged.
The speed-controlled pump (G30) and sensors B31 and B30 are fitted next
to the solar panels.
For recharging the bedrock/ground, a 3-way valve (Y31), heat exchanger and
charge pump (G31) are connected.
The 3-way valve (Y30) is fitted together with the speed-controlled pump
(G32) and heat exchanger in order to direct the flow towards the DHW tank
or the buffer tank. Heat exchangers and pumps (G32) do not need to be
installed to the solar heating circuit if there is already a loop in the connected
DHW/heating tank.
When the recharging function is in operation, CTC EcoLogic also starts
the brine pump in the heat pump (CTC EcoPart). The charge pump for
recharging the borehole (G31) ensures there is enough flow through the heat
exchanger.
8.2.6
System Types 2 and 3 - Solar heating
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