Removing Air From The System - Sanden GAUS-315EQTD Installation Manual

Removing air from the system

 The following steps must be taken to ensure all air is removed from the system.
Incorrect removal of air may cause the water temperature to vary.
 Plumb pipes to tank unit and heat pump unit.
 Push up the lever on the PTR valve to open, and fill the tank unit with water.
 Confirm the water comes out of the relief valve and then close the lever.
 Open the water tap to remove air.
 Close the tap after no air is confirmed in the water.
 Open the water drain plugs (two places) on the heat pump unit.
 Close the plugs after no air is confirmed in the water.
 Supply the power to the heat pump unit and leave the water tap open for three
minutes.
 Close the tap after no air is confirmed in the water.
Figure 7: Air removing process
PTR valve
lever
PTR Valve Lever
Plumb pipes to Storage Tank Unit and Heat Pump Unit.
Push up the lever on the PTR valve to open,
and fill in the tank with water.
Confirm the water come out of the relief valve,
and then close the lever.
Water drain plugs
Open the water tap to remove air. Close the tap after no
air is confirmed in the water.
Open the water drain plugs (2 places) on the Heat Pump
Unit.
Close the plugs after no air is confirmed in the water.
Supply the power to the Heat Pump Unit and leave the
water tap open for 3 minutes.
Close the tap after no air is confirmed in the water.
Sanden Heat Pump – Installation Manual
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