To Next PageTo Next PageWhat to do if I see residue or metal dust in my Toshiba HWT-801H8W-E?
If you observe discolored oil, a large quantity of residue, shiny metal dust, or other wear residue or mixture of foreign matter, the existing pipes should not be reused as they are.
What to do if there is a heavy scratch or dent on my Toshiba HWT-801H8W-E Heat Pump pipe?
If there is a heavy scratch or dent on the pipe, be sure to use new pipes for the refrigerant piping works.
What to do if existing pipe thickness is thinner than specified for my Toshiba HWT-801H8W-E Heat Pump?
If the existing pipe thickness is thinner than the specified 'Pipe diameter and thickness,' be sure to use new pipes for the refrigerant piping works.
Details protective gear needed for installation and maintenance tasks.
Emphasizes professional installation to prevent leaks, electric shock, or fires.
Stresses the importance of proper earthing to prevent electric shock and reduce noise.
Mandates powering down before electrical work to prevent electric shock hazards.
Recommends a dedicated power circuit for the unit to ensure stable operation and safety.
Highlights correct wiring to avoid damage to electric parts and ensure system integrity.
Warns about introducing foreign matter into the refrigeration cycle during unit relocation.
Lists necessary tools and equipment and precautions for their safe and effective use.
Details material, diameter, and thickness requirements for refrigerant piping.
Step-by-step guide for conducting an airtight test using nitrogen gas to check for leaks.
Explains how to purge air from the system using a vacuum pump to ensure vacuum.
Instructions for securing power and connecting wires properly to prevent damage.
Emphasizes proper earthing to prevent electric shock and reduce electrical noise.
Details checks and procedures before and during the unit's initial test run.
Provides guidelines and warnings for choosing a suitable installation location for optimal performance.
Details on fixing the unit securely to the foundation and setting up drainage connections.
Instructions for removing pipe covers and preparing passage holes for pipes and wires.
Step-by-step guide for flaring refrigerant pipes, including tool usage and precautions.
Key points and cautions for performing gas leak checks on piping connections.
Defines maximum and minimum lengths for refrigerant pipes based on model for proper operation.
Detailed steps for pressurizing pipes with nitrogen and checking for leaks.
Steps to check for leaks using foaming liquid or other methods after pressurization.
Instructions for using a vacuum pump to evacuate air from the connecting pipes.
Instructions on how to properly open and close the liquid and gas side valves.
Steps for charging refrigerant when pipe length exceeds specified limits.
Details on using liquid refrigerant and avoiding gaseous refrigerant for charging.
Table showing how to calculate additional refrigerant based on pipe length.
Specifies the need for insulating material that withstands high temperatures for the gas side pipe.
Guide on how to fill in the refrigerant label with specific quantities and values.
Illustrates how to connect system interconnection wires between the Hydro and Outdoor Units.
Details required power supply, wire size, and fuse ratings for different unit models.
Instructions to connect the earth wire correctly according to applicable technical standards.
Guidance on routing wires away from valves and hot pipes to prevent damage.
Recommends powering on 12 hours prior to test run for compressor protection.
Essential checks for leaks, valve status, and potential pressure issues before operation.
Suggests cleaning units every 3 months for regularly operated systems.
States that cleaning and maintenance should be performed by qualified service personnel.
Lists recommended temperature ranges for cooling, heating, and hot water operations by model.
Guidelines and checks for reusing existing refrigerant pipes for installation.
Warnings and restrictions when reusing previously installed pipes to ensure safety.
Explains LED indicators and check codes for diagnosing unit issues.
Details conditions, restrictions, and checks for reusing existing refrigerant pipes.
Three essential conditions (dry, clean, tight) for reusing existing pipes.
Cases where existing pipes should not be reused and require replacement.
Explains monitoring refrigerant concentration and ventilation in confined spaces.
General