Test Running; Precautions On Refrigerant Leakage; Turn Over To Customer - intensity MDV-V105W/DMN1 Installation Manual

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.

8. TEST RUNNING

Operate according to "gist for test running" on the electric control
box cover.
CAUTION
Test running can not start until the outdoor unit has been
connected to the power for 12hr.
Test running can not start until all the valves are affirmed
open.
Never make the forced running .(Or the protector sits back,
danger will occur.)
9. 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.
Critical thickness------the Max. thickness of Freon without any
harm to person.
Refrigerant critical thickness: 0.3[kg/m
R407C, 0.44[kg/m for R410A.
3]
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
volume + superaddition
2. Calculate the indoor cubage (B[m
cubage.
3. Calculate the refrigerant thickness
A[kg]
≤ critical thickness
B[m ]
3
Fig. 7-5
3 ] for R22, 0.35[kg/m 3 ] for
]) (as the minimum
3
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.
Outdoor unit
Room full of leak refrigerant
(All refrigerant has run up)
b. Leak alarm related to mechanical ventilator
Indoor unit
(Leak hunting siren should be installed inperistome
places easily keep refrigerant)
NOTE
Please press "constraint cool" button to carry out refrigerant
recycling process. Keep the low pressure above 0.2MPa, other
wise compressor may be burnt out.

10. TURN OVER TO CUSTOMER

The owner's manual of indoor unit and owner's manual of
outdoor or unit must be turned over to the customer. Explain
the contents in the owner's manual to the customers in details.
Indoor unit
A. Ventilation
Fig. 9-1
Installation manual
9