Removing Air From The System - Sanden GAUS-160FQS 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 the tank unit and the heat pump unit.
• Push up the lever on the PTR 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 13)
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 "On", then press the "Enter"
key.
It will automatically go back to the clock display mode than 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 7: Air removing process
Water drain plugs
Open
The deain plug
PTR valve lever
Plumb pipes to Storage Tank Unit and Heat Pump
Plumb pipes to Storage Tank Unit and Heat Pump Unit.
Unit.
Push up the lever on the PTR valve to open,
Push up the lever on the PTR valve to open,
and fill in the tank with water.
and fill in the tank with water.
Confirm the water come out of the relief valve,
Confirm the water come out of the relief valve,
and then close the lever.
and then close the lever.
Open the faucet to remove. Close the faucet after
Open the faucet to remove air. Close the faucet
after no air bubbles can be seen in the water.
no air bubbles can be in the water.
Open the water drain plugs (2 places) on the Heat Pump
Open the water drain plug on the Heat Pump Unit.
Unit. Close the plugs after no air is confirmed in the water
Close the plug after no air is confirmed in the water
supply.
supply.
Then connect power to the Heat Pump Unit. Open
Then connect power to the Heat Pump Unit. Open
Faucets.
faucet.
Sanden Heat Pump – Installation Manual
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