T/ZLXH 0002-2020 Multizone air conditioning (heat pump) engineering construction technical specification

Scope

Main Technical Content: 5.2 Installation of Indoor Units 5.2.1 The installation environment of indoor units shall meet the following requirements: 1. There should be sufficient installation and maintenance space around the indoor units. For indoor units installed in enclosed ceilings, provision shall be made for a removable and easily accessible inspection port for maintenance. 2. Before installation, the indoor units shall be cleaned of internal and external debris. After hoisting, the open supply air inlets and return air inlets shall be protected against dust. 3. Condensed water from the indoor units shall be discharged in an organized manner, and measures shall be taken to prevent water overflow or accumulation from affecting the environment or human activities. 4. The airflow of the indoor units shall be unobstructed and evenly distributed, with no airflow short-circuiting. The supply air inlets and return air inlets of the same indoor unit shall be located in the same space. 5.2.2 The positioning and bracket installation of indoor units shall meet the following requirements: 1. The indoor units shall be installed horizontally. 2. The indoor units must be individually supported by brackets, and shall not be shared with other equipment or pipelines, nor be suspended from other professional brackets. 3. When using metal hanging rods with a diameter of at least 10mm to fix the indoor units on cast-in-place ceilings, the strength of the rods shall be able to withstand the operating weight of the units. The rods shall be fixed with one nut on the upper side and two nuts on the lower side to prevent loosening. When the length of the rods exceeds 1.5m, anti-vibration measures shall be taken. The actual tensile force of the hanging rods shall be set at 50% to 70% of the allowable tensile force specified in Table 5.2.2. 4. When using expansion bolts with a diameter of M10, the drilled hole diameter shall be the outer diameter of the expansion tube

Development Information

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