Thermia Atria Optimum, Installation Manual

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The delivery includes two rubber hoses and pipe insulation stored inside the outdoor unit. The hoses are to be connected to the outdoor
unit on one side and to the brine circuit on the other side as shown in the the figure below. The side panel has to be removed in order to
get access to the brine pipes.
5.4 Maximum length of collectors
Product fact
The recommended length of the collectors in the tables below could be exceeded independently on which heat source is used for the
heat pump.
If the recommended lengths are exceeded the ΔT could increase and thereby will the COP decrease. The COP will decrease by a few
percenteges even if the ΔT will increase up to 6°C.
The lengths of the collectors are based on ethanol 30% at 0°C.
Collector of type PEM DN 32, Øi=28
Diplomat, Comfort, Diplomat Duo Calculated maximum length of collectors (m)
Size (kW) 1 collector 2 collectors 3 collectors 4 collectors
6 <390 <2 x 425 - -
8 <300 <2 x 325 - -
10 <270 <2 x 395 - -
12 <190 <2 x 350 - -
16 <70 <2 x 175 <3 x 183 4 x 197
Installation Guide Domestic heat pumps
VMGFP202 Thermia Värmepumpar
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