Covering model numbers GAUS-315EQTA GAUS-315EQTB GAUS-315EQTC Heat Pump Unit GAU‐A45HPA Tank Unit HP315SSA_D.2 Tank Unit HP315SSA_C.2 Tank Unit HP315SSA_F.
Contents Contents ..............................................................................................................................................................................2 Introduction ......................................................................................................................................................................3 How it works.............................................................................................................................
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 CO2 which does not contribute to global warming so it allows us to help keep a clean healthy earth for future generations. We have also considered the power requirement. By using CO2 as the refrigerant we have produced one of the most energy efficient units currently available.
Installation details This Heat Pump Water Heater System must be installed by a licensed person in consideration of the following standards and regulations: AS/NZS3500 National plumbing and drainage code hot water supply systems – acceptable solutions HB 263-2004 Heated water systems plumbing industry commission AS/NZS 3000 Electrical installations (known as the Australian/New Zealand wiring rules) Notice to Victorian customers from the Victorian Plumbing Industry Commission.
Installation location For the most efficient operation of the heat pump unit the optimum location is the warmest side of the property and there should be sufficient space for the warm air to circulate through the unit. The tank unit should be located as close as possible to the most frequently used hot water outlet such as a bathroom. It may be located either outside or inside.
Figure 4: Restrictions on installation with the space between the tank unit and the heat pump unit Overhead view Standard layout Side view Keep the piping run to a minimum as the longer the pipe run the greater the potential for heat loss. Total piping length: 4 metres maximum per way Number gure 4 of bends: 6 maximum (A) Difference in height between the base of tank and base of Heat pump should be no more than: 3m Max.
Figure 5: Heat pump installation example and dimensions Attach the drain elbow to the drain opening located on the bottom of the heat pump unit. The drain elbow is included in the installation kit for the heat pump unit. Attach a drain hose with 16mm of inner diameter to the drain elbow to guide the drained water to a appropriate drain Piping Connections All piping that connects to the water supply must be carried out by a licensed plumber.
Follow the manufacturer’s instruction manual for the type of bond, amount to be applied, curing time, and other specifications. If any bond or flux has entered the tank unit and the hot water has a chemical/acrid smell take the following countermeasures. a) After heating the water in the tank unit, drain it and clean inside the tank unit. Fill the tank unit with 100 litres of water and exchange twice. b) Clean or change the filter. c) Fill up the tank unit.
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 tank unit and heat pump unit. Push up the lever on the PTR valve to open, and fill the tank unit with water. Confirm the water comes out of the relief valve and then close the lever. Open the water tap to remove air. Close the tap after no air is confirmed in the water.
Freeze protection Even if the pipes have been insulated, the piping can freeze if the surrounding temperature gets below zero. This could cause damage to the equipment and piping so make sure the appropriate freeze protection measures are taken Follow the instructions in the installation manual provided with the freeze protection heater. After completion of the piping work inspect the plumbing for any water leaks from the joints before carrying out freeze protection.
Electrical connections Electrical installation should be done only by a licensed electrician who carries out the work according to the relevant regulations for electrical safety and wiring. Follow the wiring rules for the breaker rating and the thickness of the electrical wiring. Verify that the tank unit is full of water and the water stop cocks are open before turning on the power.
Electrical installation should only be done by a licensed electrician Outline of electrical system connections How to connect power line Remove the piping cover, terminal block cover and screw clamp fitting. Connect the power supply line to the terminal block. Hold the power supply line below the terminal block with the screw clamp fitting. Attach the terminal block cover and piping cover back on the heat pump unit.
How to connect tank unit thermistor cable Cut the thermistor cable and conduit to the required lengths. The thermistor cable and conduit length are designed to cover the maximum allowable distance between the tank unit and heat pump unit (four meters). If the units are located closer than four meters the thermistor cable and conduit may be cut to the desirable length (Figure 11). Reveal the sheath on the thermistor cable. Attach the conduit connector to the conduit end.
Time setting and block out time setting Current time setting This product contains a built-in clock IC. As a part of the water heating cycle logic refers to the current time, it is necessary to set the clock before starting to use the product. The current time can be set in the Clock Setting Mode as described below. *Note There is no need to adjust the time setting for the daylight saving period.
Blockout time setting mode This mode is used to set the block out time that blocks the heat pump unit operation within the setting time. Blockout times are used if the customer has a time of use tariff. Change the mode Press and hold down Up and Down keys together in the clock display mode to go to the block out time setting mode. Once the mode is changed, ‘bo’ and ‘00XX’ (00 = start time, XX = end time) are displayed.
Maintenance Mode Maintenance mode is a function to check the heat pump unit status and to check and perform other settings. It should generally be assumed that the owner does not operate this function. The following modes can be found in the maintenance mode. Blockout time setting mode Set the block out time. Error history display mode Check the history of any errors that may have occurred. Parameter display mode Check the values measured by the thermistor.
Error Codes When an error has occurred, a red LED on the timer setting panel turns on and an error code is displayed on the LED display. The panel does not turn to the display sleep mode while the error code is shown. After a component is replaced or the inspection is completed, turn the breaker on/off several times to confirm the error does not re-occur. Below is the list of the error codes. If the corrective action does not solve the error problem, a malfunction of the PCB valve is highly likely.
Thermistor detection error - Reconnect the expansion valve connector, check if it is off the PCB - Replace the expansion valve (together with PCB), or the entire unit of heat pump E045 E047 - Check if the thermistor is mounted in HP defrost thermistor detection error position on the evaporator - Replace the defrost thermistor - Check the heat pump piping filter for any blockage - Check if any piping bend, blocking or crush - Inspect if the pipes are being frozen High pressure side error - Open the valve
Water Supply Quality Chloride and pH In high chloride water supply areas, the water can corrode some parts and cause them to fail. Where the chloride level exceeds 250 mg/litre warranty does not apply to the heat pump unit and tank unit. pH is a measure of whether the water is alkaline or acid. In an acidic water supply, the water can attack the parts and cause them to fail. No warranty applies to the heat pump unit and tank unit where the pH is less than 6.0.
Dimensions and technical data Hot water storage tank unit GAU‐315EQTA Storage capacity Product weight Design pressure Storage tank material Outside casing 315 litres 82 kg 700 kPa Stainless steel Colour coated zinc steel Sanden Heat Pump – Installation Manual Page 20 of 26
Heat pump unit GAU‐A45HPA Refrigerant type Product weight Thermal capacity Power consumption COP Heated water temp. R744(CO2) 56 kg 4.5 kw *1 1.0 kw *1 4.5 *1 o 65 C *1 Ambient temp. (Dry / Wet) 16oC / 17oC, Inlet water temps. 17oC, Outlet water temp.
Wiring Diagram Sanden Heat Pump – Installation Manual Page 22 of 26
Warranty Policy Warranty Conditions 1. The Sanden Heat Pump Water Heater System must be installed in accordance with the installation instructions supplied with the Heat Pump Water Heater System and in accordance with all relevant statutory and local requirements of the state in which the water heater is installed. 2. Where a failed component or Heat Pump Water Heater System is replaced under warranty, the balance of the original warranty period will remain effective.
9. Repair and/or replacement of the Heat Pump Water Heater System due to scale formation in the waterways or the effects of either corrosive water or water with a high chloride or low pH level when the water heater has been connected to a scaling or corrosive water supply or a water supply with a high chloride or low pH level as outlined in the Owner's Guide and Installation Manual.
Check sheet Safety items Action Completed Fix the legs of the tank unit in place with anchor bolts if necessary. The floor has been properly water proofed and properly drained. The earth leakage breaker can be turned off with the test button. Earth (ground) work is implemented. The tank unit is installed on a level sturdy surface. There are no gas containers or flammable materials anywhere near the unit. The wiring between the tank unit and the heat pump unit is properly connected.
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