What is the suction pipe pressure must be For small airconditioning unit eg1-2 TR'?

For small air conditioning units, such as those with a capacity of 1-2 tons (TR), the suction pipe pressure typically ranges from 30 to 40 psi (pounds per square inch) under normal operating conditions. This pressure can vary slightly depending on the specific refrigerant used and the ambient temperature. It's crucial to monitor this pressure to ensure optimal system performance and efficiency. Always refer to the manufacturer's specifications for precise pressure guidelines.