EarthLinked AVS-0030-A, Quick Start Instructions

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SD-410-QS (H) (06/15) Page 43
Figure 31. Hydronic System Performance Parameters
8. Check the suction saturation temperature to verify that it is within ±3°F for the measured
suction pressure. The suction temperature should be approximately 15 to 20°F lower
than the local earth temperature.
Cool Mode Start-Up
IMPORTANT!
Be sure the return air to the air handler is maintained in the range of
70ºF to 80ºF.
If site conditions prevent maintaining an air handler return air
temperature between 70ºF and 80ºF, the cooling system start-up steps
can be completed at a later time. If the cooling mode start-up process is
delayed, the system can run in heat mode only and the cooling mode
must be disabled until the cooling mode start-up process is initiated. If
the cooling mode start-up process is initiated after running the system
in heat only mode, the system should remain OFF for 48 hours after
running in the heat mode to allow the earth temperature surrounding the
earth loops to stabilize.