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O O p p e e r r a a t t i i n n g g P P r r i i n n c c i i p p l l e e s s
In cooling mode, the diverting valves direct the load
chilled fluid to the evaporator and simultaneously
direct the source/sink fluid to the source/sink brazed
plate heat exchanger operating as a condenser.
Figure 9. 50 and 60 tons PolyTherm dimensions
In simultaneous heating and cooling mode, the
diverting valves direct the load heating fluid to the
condenser and the load cooling fluid to the evaporator.
Electronic valves on the brazed plate source/sink heat
exchanger outlet modulate to control refrigeration
26
In heating mode, the diverting valves direct the load
heating fluid to the condenser and the source/sink fluid
to the source/sink brazed plate heat exchanger as
refrigerant has been redirected such that it operates as
an evaporator.
head pressure. Electronic valves on the evaporator and
condenser outlet also allow for variable flow. See
Figure 8, p. 25
and
Figure 9, p.
26.
ARTC-SVX005B-EN
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