Install Electric Throttle Part; Install Branch Pipe; Test Operation - intensity MDV-D71T1/VN1-B Installation Manual

High static pressure duct fan & coil
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Infrared signal receiver
Operation lamp
Timer indicator
PRE-DEF indicator(cooling and heating type)
or fan only indicator(cooling only type)

14. INSTALL ELECTRIC THROTTLE PART

Please refer to the following figures to install.
Connective Pipe 1
Connective Pipe 2

15. INSTALL BRANCH PIPE

Liquid branch pipe
Electric throttle part
12.7
25.4
Gas branch pipe
Branch Part should be installed in horizontal mode or
vertical mode.
Install horizontally
Temporary button
Alarm indicator
Fig.13-1
Fig.14-1
Hi-pressure pipe
Low-pressure pipe
10m
9.5
9.5
15.9
15.9
Fig.15-1
Install vertically
Main pipe is vertical
to horizontal plane
Fig.15-2
Fig.15-3

16. TEST OPERATION

The test operation must be carried out after the entire installation
has been completed.
Please confirm the following points before the test operation:
The indoor unit and outdoor unit are installed properly.
Tubing and wiring are correctly completed.
The refrigerant pipe system is leakage-checked.
The drainage is unimpeded.
The heating insulation works well.
The ground wiring is connected correctly.
The length of the tubing and the added stow capacity of the refriger-
ant have been recorded.
The power voltage fits the rated voltage of the air conditioner.
There is no obstacle at the outlet and inlet of the outdoor and
indoor and indoor units
The gas-side and liqid-side stop vaule are both opened.
The air conditioner is pre-heated by turning on the power.
According to the user's requirement, install the remote controller
frame where the remote controller's signal can reach the indoor
unit smoothly.
Test operation
Set the air conditioner under the mode of "COOLING"with the
remote controller, and check the following points per the "Owner's
Manual" If there is any malfunction, please resolve it through
chapter "Troubles And Causes "in the "Owner'sManual".
The indoor unit
Whether the switch on the remote controller works well.
Whether the buttons on the remote controller works well.
Whether the air flow louver moves normally.
Whether the room temperature is adjusted well.
Whether the indicator lights normally.
Whether the temporary buttons works well.
Whether the drainage is normal.
Whether there is vibration or abnormal noise during operation.
Whether the air conditioner heats well in the case of the
HEATING/COOLING type.
The outdoor unit
Whether there is vibration or abnormal noise during operation.
Whether the generated wind, noise, or condensed water by the
air conditioner have influenced your neighborhood.
Whether any of the refrigerant is leaked.
CAUTION
Protection function will delay the startup of compressor for 3
minutes in case the unit is turned on immediately after power
on or restarted after shutdown.
installation manual
19

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