Filling The System & Bleeding Air - ECO2 Systems SANCO2 GS4-45HPC Installation Manual

Filling the System & Bleeding Air
Removing air from the system
The following steps must be taken to ensure all air is bled from the system.
Please note:
Incorrect bleeding of air may cause the water temperature to vary during operation, and
Plumbing work should only be completed by a licensed plumber
lead to possible error codes.
・
Ensure that all piping to tank unit and heat pump unit are installed and connections are
• The following steps must be taken to ensure all air is removed from the system.
tight, then open the Cold Water Supply Valve to 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 PR valve to open, and fill the tank unit with water.
• Push up the lever on the PTR valve to open, and fill the tank unit with water.
Confirm that water comes out of the relief valve, and then close the lever.
• 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 plug 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 or a steady stream of water is present.
• Connect the power to the heat pump unit.
・
Supply power to the heat pump unit.
• Air removing process (Refer to figure 4)
・
Display shows "1200" then "Clock setting mode" is started with operating "Air bleeding
1. Switching to Air Removing Mode
process" at the same time.
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
In case finish time setting or nothing is operated for 1 minute, "Clock setting mode" is
the "Enter" key. Press the "Up" keys again to display "APon", then press the
terminated and "APon" will be displayed on the monitor.
"Enter" key.
・
"Air bleeding process" will be done in 5 minutes.
After 5 minutes, the air removing mode will automatically finish and the display will
Once it's finished, current time will be shown on monitor.
show [Air ] again.
・
Leave the hot water faucets open for 3 minutes.
• Open the hot water taps in the home to remove air.
Close the faucets after no air can be seen in the water.
• Close the hot water taps in the home after no air is confirmed in the water.
*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 10: Air bleeding process
Figure 4: Air removing process
The air bleeding valve
PR valve lever
Open the faucet to bleed air. Close the faucet
after no air bubbles can be seen in the water.
Open the air bleeding valve on the Heat Pump
Unit.
Close the valve after no air is confirmed in the
water supply.
Then connect power to the Heat Pump Unit.
Open faucet.
Open
Sanden Heat Pump – Owner's Manual
SANCO Heat Pump – Installation Manual
2
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Page 17 of 44
PR valve to open,