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Covering model numbers GAUS-315EQTD GAUS-315EQTE Heat Pump Unit GAU-A45HPA Tank Unit GAU-315EQTE Sanden Heat Pump – Installation Manual Page 1 of 33...
Note: Every care has been taken to ensure accuracy in preparation of this publication. No liability can be accepted for any consequences that may arise as a result of its application. Sanden is in a process of continuous improvement with, therefore specifications may be different to those referenced in this manual –...
Introduction The Sanden Heat Pump Water Heater System has been designed using the latest refrigeration technology to remove the heat from the air to heat water. The refrigerant we use is CO which does not contribute to global warming, so it allows us to help keep a clean healthy earth for future generations.
Such failure is not covered under any warranty agreements. Failure to comply with the above conditions will void the warranty. Figure 2: Typical installation layout 100 Psi Water Faucet Pressure Reducer 95 Psi MAX Sanden Heat Pump – Installation Manual Page 4 of 33...
10% and power consumption increased by approx.10% For optimum operation install the unit per the above or in a location with no obstacles Sanden Heat Pump – Installation Manual Page 5 of 33...
Note: The entire system is set up and fully functional when supplied. Once all the water and electric connections have been made the system will operate automatically provided that mains power is available. Sanden Heat Pump – Installation Manual Page 6 of 33...
The water supply must have a pressure of 29 PSI (200 kPa) or higher. A drain trap must be installed on the drain pipe if water is to be drained to a drain pan Sanden Heat Pump – Installation Manual Page 7 of 33...
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Drain water from the relief valve for one to two minutes. e) Run water from all the hot water supply faucets in the house for about ten minutes to clean inside the pipes. Sanden Heat Pump – Installation Manual Page 8 of 33...
If the heat pump unit piping is kinked or clogged or the air inside was not removed during the test operation, temperature of the supplied hot water may become inconsistent. Sanden Heat Pump – Installation Manual Page 9 of 33...
Secure the power supply wiring below the terminal block with the screw clamp fitting. Attach the terminal block cover and piping cover back on the heat pump unit. Sanden Heat Pump – Installation Manual Page 11 of 33...
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Figure 10: Power Wiring Connections Ground 208/230V Power Sanden Heat Pump – Installation Manual Page 12 of 33...
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Replace the terminal block cover back onto the tank unit and tighten the screws. Figure 11: Connecting tank unit thermistor cable Tank unit Terminal block Thermistor cable Gasket Conduit connector Conduit Sanden Heat Pump – Installation Manual Page 13 of 33...
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Select the electrical supply mode that best suits the customer’s hot water consumption. The type of off-peak connection may need to be changed if hot water supply is not maintained as required. Sanden Heat Pump – Installation Manual Page 14 of 33...
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Check the Installation against the Installation Check list provided at the end of this manual Ensure that the work site is tidy; Sanden International recommends the use of Slim Duct or Fortress product to cover water piping on the outside of the house Sanden Heat Pump –...
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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 Heat Pump Unit. Open Faucets. Sanden Heat Pump – Installation Manual Page 16 of 33...
It is important to use a heat tape that directly senses the pipe’s temperature. Figure 8: Details on wrapping thermal insulation around the piping connector Sanden Heat Pump – Installation Manual Page 17 of 33...
The time setting can be adjusted by pressing “Up” and “Down” keys. Fast forward and rewind are available by pressing and holding down a key. 3. Executing Setting the Clock Sanden Heat Pump – Installation Manual Page 18 of 33...
Press the Enter key to set the desired time setting. After the start time is set, the start time display stops flashing. The end time display will now start flashing. Sanden Heat Pump – Installation Manual Page 19 of 33...
It should generally be assumed that the owner does not operate this function. The following modes can be found in the maintenance mode. Blackout time setting mode Set the blackout time. Sanden Heat Pump – Installation Manual Page 20 of 33...
After the mode is switched, press the Enter key to select a mode from the six modes described above. To exit maintenance mode, press and hold down the Enter key, or leave for more than 60 seconds with no panel operation. Figure 13 Maintenance mode diagram Sanden Heat Pump – Installation Manual Page 21 of 33...
Below is the list of the error codes. If the corrective action does not solve the error problem, a malfunction of the PCB controller is highly likely. Error Error contents Corrective action code E000 No error generated Sanden Heat Pump – Installation Manual Page 22 of 33...
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- Replace the defrost thermistor - Check the heat pump piping filter for any blockage E047 High pressure side error - Check for any piping bend, blocking or kink Sanden Heat Pump – Installation Manual Page 23 of 33...
No warranty coverage is given on the heat pump unit and tank unit where the PH is less than 6.0. Supply Water with a PH less than 6.0 may be treated to raise the PH. Sanden Heat Pump – Installation Manual Page 24 of 33...
Hot water storage tank unit GAU-315EQTE Storage capacity 83 / 66 gallons Product weight 154 / 134 lbs Design pressure 101 PSI (700 kPa) Storage tank material Stainless steel Outside casing Colour coated zinc steel Sanden Heat Pump – Installation Manual Page 26 of 33...
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Heated water temp. F (65 *1 Ambient temp. (Dry / Wet) 61 F (16 C) / 63 F (17 C), Inlet water temps. 63 F (17 Outlet water temp. 149 F (65 Sanden Heat Pump – Installation Manual Page 27 of 33...
3. Where the Heat Pump Water Heater System is installed outside the boundaries of a metropolitan area as defined by Sanden or further than 15 miles from an accredited service agent, the cost of transport, insurance and travelling costs between the nearest accredited service agent's premises and the installed site shall be the owner's responsibility.
Warranty Period Subject to the Warranty Conditions and Exclusions stated above, your Sanden Heat Pump Water Heater System is warranted as follows: Heat pump unit – Three years from date of installation Tank unit –...
On completion of the installation, inspect and check off each item in the charts on the following page. Once the inspection has been completed remove the inspection table and hand to the customer. Check sheet Safety items Sanden Heat Pump – Installation Manual Page 31 of 33...
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Insulation is provided for the water supply/hot water supply and heater pump pipes. During draining of the tank unit water does not overflow from the building drain. Installed By…………………………………… Date………………………………… Inspected By ………………………………… Date………………………………… Sanden Heat Pump – Installation Manual Page 32 of 33...