VRF Air-Conditioner IOM
6
Concentrated construction of drainage pipe of
multiple indoor units in seat installation (pump
must be dismantled) shall be in accordance with
the following figure.
6.2
Drainage test
Guarantee smooth drainage pipe connection and
check whether each joint is sealed.
Confirm by injecting water into air outlet. Inject
water into air outlet with jar or hose; pay attention
to slowly injecting until the drainage nozzle of
water pond has water flow.
At the end of preparation work, power on terminal
board and immediately start discharge pump in
refrigerating mode.
Check the drainage condition of discharge pump
after operating for a few minutes.
In seat installation, the method of drainage test is
to directly inject water slowly from air outlet until
the water outlet of drainage pipe end has water
discharge and observe whether the middle has
seepage along the pipeline.
7.
Electric Connection
7.1
General
Power off before implementing any electric
operation.
All the purchased parts and materials as well as
electric operation must comply with the local laws
and regulations.
All the connection operation must be implemented
by professional electrician.
Line breaker or leakage breaker must be arranged
at power supply.
Earthing resistance must below 4Ω.
Air conditioner must be earthed reliably. Earthing
wire shall not be connected to gas pipe, tap water
pipe, lightening rod or telephone line.
Do not power on before the end of all the electric
operation.
The terminal of the same power supply shall not
be connected with two wires with different
diameters.
Please use the power line with specified
specification, firmly connect and ensure terminal
free from external force drawing.
Terminal screw should not be too tight or too
loose. Too tight will damage the terminal and too
loose may lead to poor contact and cause excess
heating to trigger hazard.
7.2
Unit power distribution
Please refer to the following figure for power
distribution of indoor unit and outdoor unit.
A set of independent cooling medium system shall
use an independent switch control; multiple
systems shall not use a switch control and partial
indoor unit in a system and indoor unit of other
system shall also not share a switch control.
About 10cm as much as possible
Incline
downward
above 1/100
Drainage pipe
Inject water into air
outlet
Arrange drainage
pipe to U shape
against return
Wrap drainage pipe and its
connection position with
insulating
pipe
against
condensation
S-shaped
Bending
Indoor unit
Outdoor
unit
