Removing Air From The System - Sanden EcoPlus GAUS-300FQS Owner's Manual

Removing air from the system

Please note:
Plumbing work can only be completed by an EcoPlus approved plumber.
 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 the tank unit and the heat pump unit.
 Push up the lever on the TPR valve to open, and fill the tank unit with water.
 Confirm that the water comes out of the relief valve and then close the lever.
 Open the hot water taps in the home to remove air.
 Close the hot water taps in the home after no air is confirmed in the water.
 Open the water drain plug on the heat pump unit.
 Close the plug after no air is confirmed in the water.
 Connect the power to the heat pump unit.
 Air removing process (Refer to figure 4)
1. Switching to Air Removing Mode
Long press the "Up" and "Down" keys to switch to the "Heat Setting Mode".
2. Press the "Up" or "Down" keys to switch to the "Air Removing Mode" and press
the "Enter" key. Press the "Up" keys again to display "APon", then press the
"Enter" key.
It will automatically go back to the clock display mode after 5 minutes.
 Open the hot water taps in the home to remove air.
 Close the hot water taps in the home after no air is confirmed in the water.
Figure 4: Air removing process
Water drain plugs
Open
the drain plug
TPR valve lever
TPR valve lever
Plumb pipes to Storage Tank Unit and Heat Pump Unit.
Push up the lever on the TPR valve to open,
and fill the tank with water.
Confirm the water comes out of the relief valve,
and then close the lever.
Open the faucet to remove air. Close the faucet
after no air bubbles can be seen 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.
Then connect power to the Hea t Pump Unit. Open
Faucets.
Sanden Heat Pump – Owner's Manual
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