Johnson Controls SABROE HeatPAC, Operating Manual, Page: 29 / 64

Operating manual - HeatPAC with reciprocating compressor
009332 en 2021.07
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Design and function
The receiver is equipped with two sight glasses, pos. 1, a purge valve, pos. 2, an electronic level trans-
mitter, pos. 3, and a drain valve, pos. 4.
The outlet pipe, pos. 5, comes from the bottom of the receiver.
The receiver is available in two sizes: DN150 and DN200.
Fig. 14: HeatPAC receiver, DN150 Fig. 15: HeatPAC receiver, DN200
3.2.7 Air purge valve
If there is air or other non-condensable gases in the refrigeration/heat pump plant it tends to accumulate
in the receiver or the condenser.
On HeatPAC the air purge valve is fitted at the top of the receiver, pos. 2, Fig. 14 and Fig. 15.
During air purging the air purge valve should be connected to an open vessel containing water via a re-
frigerant hose.
The air will leave the water as bubbles whereas the R717 gas will be absorbed by the water.
Note: R717 containing water must be disposed of in a correct and proper way, see section 2.3.9 Purging
of heat pump.
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