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5. Installation and Debugging5.1 Operating conditions:The heat pump operates normally under the following conditions:Ambient Temperature: -8℃-43℃Relative Humidity: ≤95%Power Supply: 220V/-/50Hz Any conductive material, explosive gas, or corrosive gas that woulddamage the metal or isolation material of heat pump should not be in thevicinity. The unit is recommended to be installed outdoors or in the basement.5.2 Transportation and Installation: During transportation the unit must be right side up and should not beinclined more than 30° degrees from the vertical.The unit must be positioned with clearance in the front and on both sides: 1mfrom the front and 2m from both sides. The unit should be firmly installed withinan inclination ≤2/1000. The 220V/50Hz power supply should not be too far away from the unit toavoid high pressure drop when compressor starts. It is suggested to use2.5~16mm 2 four-core cable without joints and power switch with residualcircuit breaker. Wiring according to the electric drawing. Be sure the unit iswell grounded (a 5meter ground line is supplied with the unit).Inlet and outlet pipe connections should be checked to avoid leaks and anyexcessive pressure. A valve, filter and pressure gauge should be installed at theinlet side to control the input water pressure and flow and clear the water before itgoes into the circulation system. Refer to the installation drawing (page 3) forinstallation details. Pressure of the circulation pipes inside the heat pump should bewithin the limit of 0.6MPa.The heat pump can be connected to a solar system if needed:Clear the water inside the system if the unit is to be stopped for a long time toavoid frozen and damage of heat exchanger and water pump in cold winter.Instruction of drainage:a) Remove the four screws at the bottom of the back plate and the drainagePage 7 of 19