IBC HPX 3 User Manual

6.7.5 Buffer tank piping
Hydronic Heat Pump circulator with integral check valve
Glycol fill tank: 25%-50% propylene glycol throughout system. Alternatively, a flat plate
heat exchanger or heat pump indirect tank can isolate glycol from distribution water (see
previous figures).
Buffer tank.
Buffer tank hydraulically separates HPX from load piping; load pump(s) sized for head
loss of building side of tank only. Buffer tank needs vacuum breaker for cooling mode.
Figure 12 Hydronic Heat Pump with buffer tank
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6.7.5 Buffer tank piping

IBC HPX 3 Specifications

General

Brand	IBC
Model	HPX 3
Category	Heat Pump
Language	English