• The installation diagram must be visible in a visible place.
• Avoid blocking liquids between valves (enclosed liquid). If this happens there should be a relief device to prevent damage.
• Provide for the existence of the drain valve in sections of the circuit that can be isolated for removal of components.
• Check valves are mounted downstream of the solenoid valves.
• The refrigerant circuit must be such that it prevents the accumulation of liquid or the condensation of discharge gas in inadequate parts.
• Do not mix hot gas with accumulated liquid.
• Pipes and equipment must be protected against mechanical damage.
• Pipes must be identified with color and symbols to avoid accidents.
