13
NOTE
The wire diameter and continuous length is under the condition
that the voltage vibration is within 2%. If the continuous length is
exceed showing value, choose the wire diameter follow relevant
regulation.
Indoor unit power supply wiring
Indoor Power Supply
Circuit Breaker
Manual swtich
Wire Distribution Box
Indoor Unit
Fig. 5-6
CAUTION
1. Refrigerant piping system, indoor unit-indoor unit connection
signal wires and indoor unit-outdoor unit connection singal wire
are in the same system.
2. When power cord is parallel with signal wire, please put them
into separate wire distribution pipes, and leave a proper
distance.(Reference distance: It is 300mm when current
capacity of power cord is less than 10A, or 500mm when 50A).
z
Please use shield wire as indoor unit/outdoor unit signal wire.
Indoor/Outdoor unit signal wire wiring
Outdoor Unit
Close end of the connection shielded wire
Indoor/Outdoor
Unit Signal Wire
(open)
In broken line table, users can purchase the wire
controller when necessary
.
Fig. 5-7
6. TEST RUNNING
Operate according to “gist for test running” on the electric control box
cover.
CAUTION
z
Test running can not start until the outdoor unit has been
connected to the power for 12hr.
z
Test running can not start until all the valves are affirmed open.
z
Never make the forced running. (Or the protector sits back,
danger will occur.)
7. PRECAUTIONS ON
REFRIGERANT LEAKAGE
This air conditioner(A/C) adopts inncouous and nonflammable
refrigerant. The locating room of the A/C should big engough that any
refrigerant leakage is unable to reach critical thickness. So certain
esssential action can be taken on time.
z
Critical thickness------the Max. thickness of Freon without any harm
to person.
z
Refrigerant critical thickness: 0.44[kg/m³] for R410A.
Confirm the critical thickness through follow steps, and take
necessary actions.
1. Calculate the sum of the charge volume (A[kg]) Total
Refrigerant volume of 10HP=factory refrigerant
superaddition
2. Calculate the indoor cubage (B[m³]) (as the minimum cubage.
3. Calculate the refrigerant thickness
Counter measure against over high thickness
1. Installmechanicalventilator to reduce the refrigerant thickness
under critical level. (ventilate regularly)
2. Install leak alarm facility related to mechanical ventilator if you
can not regularly ventilate.
b. Leak alarm related to mechanical ventilator
A. Ventilation
peristome
(Leak hunting siren should be installed in
places easily keep refrigerant)
Indoor unit
Outdoor unit
Indoor unit
Room full of leak refrigerant
(All refrigerant has run up)
Fig. 7-1
Summary of Contents for KMF-120 DVN4
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