Hydronic System Start Up

Caution

WARNING: Failure to properly bleed air from the SANCO2 heat pump, Pod, and hydronic coil may prevent the system from operating correctly and lead to damage to the SANCO2 Heat Pump.

Domestic Hot Water

1. Ensure all plumbing and wiring involving the SANCO2 and the Pod are correct and complete. Do NOT power the Harvest Pod at this time.

2. Fill the tank by opening valves on lines B and F (see Plumbing System Diagram).

3. Open PRV to allow air to exit the system. Leave open until water comes out of the relief valve.

4. Open the remaining valves (see Plumbing System Diagram).

5. Open the hot water faucets to bleed air from the house piping system. Close the hot water faucets after no air is seen in the water.

6. Open the three water bleed valves on the SANCO2 Heat Pump. Two are on the water connections, and the third is underneath the heat pump. Close the bleed valves after no air is seen in the water.

7. Power the SANCO2 outdoor unit.

   Upon powering on, SANCO2 undergoes a 5-minute air bleed cycle, displays “12:00” on the screen, and begins to run.

Tip

At this point, hot water will accumulate in the tank. It will take ~1 hour for the hot water tank to accumulate enough hot water for domestic hot water service to be usable.

Hydronic Coil

For the hydronic coil to operate, all air must be purged from the hydronic coil loop.

Note

NOTE: A check valve inside the Pod means that purging the hydronic coil plumbing loop at the highest point of the system will not be effective.

1. Close the shut-off valve at the tank on line H (see Plumbing System Diagram).

2. Open the Hose Bib (HB) drain on line H to purge the hydronic coil and circulation pump. Continue purging until no air more air bubbles are visible in the water.

3. Close the drain and re-open the shut-off valve at the tank on line H.