Cooper & Hunter FG20/C-M, Service Manual

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DUCT TYPE SPLIT AIR CONDITIONER MAINTENANCE
37
1.5 Drain Piping Work
A
B
For easy drainage of the condensation water, it should be installed with a downward gradient. To
avoid the condensation, the connection pipe joint should be insulated with thermal insulation
material. A water seal should be employed as shown above and the height of the water seal could
be determined by the pressure of the drain hose.
Drain hose is in negative pressure state: A = B
≥ P/10+20 (mm)
Drain hose is in positive pressure state: A ≥ 30mm
，
B ≥ P/10+20 (mm)
2 OUTDOOR UNIT INSTALLATION
2.1 Before Installation
1. After receipt of the unit, please check the unit for damage during transport. If there is external
or internal damage, please notify the company by written form.
2. After receipt of the unit, check and inspect the unit and accessories according to package list
for models, damage of unit body and specification and quantity of accessories.
3. Confirm conveying route and method of the unit to avoid damage to the unit and possible
injuries. For protection and safety of the unit, it is recommended to convey the unit together
with the packing container, even in special conditions.
4. Check the installation foundation for firmness. If the unit is installed on the metal place,
ensure electric insulation and conformability to relative criteria.
5. Ensure installation site away from the storage area with inflammable and explosive materials
to avoid explosion or fire.
2.2 Installation Site
— Outdoor unit should be installed in a steady and stable place.
— To reduce the length of the refrigerant pipe and bend number, make sure the indoor unit
and outdoor unit be close to each other.
— Ensure the operation noise do not disturb neighbors and passerby.
— Do not install the unit where it will be exposed to direct sunlight or other radiation heat
source, or the awning or a rainproof cloth should be utilized.
— The inlet and outlet port should not be blocked.
—
Make sure the well air circulation.
— Selection a location that is far away from combustible or explosive material, dust, fog or