Filling The System & Bleeding Air - ECO2 Systems SANCO2 GS4-45HPC Owner's Manual

Filling the System & Bleeding Air
Removing air from the system
Please note:
The following steps must be taken to ensure all air is bled from the system.
Incorrect bleeding of air may cause the water temperature to vary during operation.
Plumbing work should only be completed by a licensed plumber
Ensure that all piping to tank unit and heat pump unit are installed and
• The following steps must be taken to ensure all air is removed from the system.
connections are tight, then open the Cold Water Supply Valve to the system.
Incorrect removal of air may cause the water temperature to vary.
Push up the lever on the PR valve to open, and fill the tank unit with water.
• Plumb pipes to the tank unit and the heat pump unit.
Confirm that water comes out of the relief valve, and then close the lever.
• 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 faucets to bleed air from the house piping system.
• Open the hot water taps in the home to remove air.
Close the faucets after no air is seen in the water.
• 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. Open the water drain plugs on the heat pump unit.
• Close the plug after no air is confirmed in the water. Close the plugs after no air is seen in the water.
• Connect the power to the heat pump unit.
Supply power to the heat pump unit.
• Air removing process (Refer to figure 4)
Leave the hot water faucets open for 3 minutes.
1. Switching to Air Removing Mode
Close the faucet after no air can be seen in the water.
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
Display shows "1200" then "Clock setting mode" is started with operating "Air bleeding
the "Enter" key. Press the "Up" keys again to display "APon", then press the
process" at the same time.
"Enter" key.
In case finish time setting or nothing is operated for 1 minute, "Clock setting mode" is
After 5 minutes, the air removing mode will automatically finish and the display will
terminated and "APon" will be displayed on the monitor.
show [Air ] again.
• Open the hot water taps in the home to remove air.
"Air bleeding process" will be done in 5 minutes.
• Close the hot water taps in the home after no air is confirmed in the water.
Once it's finished, current time will be shown on monitor.
*Caution
CAUTION : Air bleeding valve is located at the bottom of the heat pump unit!
If air removing mode is not completed, the system will not start the heating cycle.
Figure 4: Air bleeding process
Figure 4: Air removing process
The air bleeding valve
PR valve lever
Open
Sanden Heat Pump – Owner's Manual
SANCO Heat Pump – Owner's Manual
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PR valve to open,
bleed air. Close the faucet
air bleeding valve
valve