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IV
SYSTEM TRIAL OPERATION
This chapter introduces the system trial operation, including the preparation work of the mechanical, water
system, and electrical parts before start up.
4.1 PRECAUTIONS BEFORE TRIAL OPERATION
●
Trial operation can only be performed after electrical safety inspection.
● Do not block the air inlet and outlet. Otherwise, the performance of the unit may be degraded or the protection
device may be activated and fail to operate.
● Make sure that all valves are open, flushing and draining the water system pipes, and confirm that the water
cleanliness meets the requirements.
● Fill the water system and empty it to ensure that there is no air in the water system.
● Never perform forced operation. (The protection device does not work, which may cause damage to the unit
and lose efficacy!).
● Whether the system is fully warmed up (more than 12 hours).
4.2 INSPECTION ITEMS AFTER INSTALLATION
According to this manual, check the installation work by referring to the following table.
Figure 4-1 Inspection items
INSPECTION ITEMS
DETAILED DESCRIPTION
YES
NO
Whether the
installation position
meets the
requirements
Unit is firmly installed and leveled
The air flow space of heat exchanger at air side
meet the requirements
Maintenance space meets the requirements
Appearance meets the requirements
Whether the water
system meets the
requirements
Water pipes’ size meet the requirements
Pressure control meets the requirements
Insulation meets the requirements
There is no air in water system
Whether the
electrical system and
wiring meets the
requirements
Leakage protector is effective
Grounding wire is correct
Wires’ capacity meet the requirements
Switches’ capacity meet the requirements
Fuse capacity meets the requirements
Voltage and frequency meets the requirements
Tightened connection position
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