Heat pump 50Hz/R410A
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2
1. General installation guideline
Part 3 Design and installation
1.2 Checking the drawing
Installation procedure
Remarks
Check and confirm required loads calculation,
model selection, drawings etc.
Make a relationship between outdoor ,indoor
controller and option connection clear.
(prepare control circuit diagram)
Determine sleeve position, size and
counts as required
Check model name to make sure the fitting is
made correctly
Special attention to dryness , cleanness and
tightness
Make sure that the drain pipe diameter is
big enough and adjust it to downward gradient
Make sure airflow is sufficient
Make sure no gap is left where the
insulating materials are joined
Multiple core cable must not be used
(suitable cable should be selected)
The foundation must be vibration proof and
in level
Avoid airflow short circuit and ensure
sufficient space is allowed for servicing
Follow the testing operation check sheet
Explain to customer or operator the manual
etc
For 24 hours at 3.8MPa(R410a) or 2.8MPa(R22)
there must be no drop in pressure
Charge the refrigerant accurately by using a
Less than 5 Torr (At least more than 1hr)
charging cylinder
Make sure there are no gaps left between
facing materials used on the ceiling
Sleeve and insert works
Installation of indoor units
Refrigerant piping works
Drain pipe works
Duct works
Insulation works
Electrical work
Outdoor unit foundation works
Installation of outdoor units
Air tight test
Vacuum drying
Additional charge of refrigerant
Fit decoration panels
Test run
Transfer to customer with explanation
Determination of work scope
Preparation of contract drawings
