Kaysun KMF-400 DN3, Installation Manual

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b. Leak alarm related to mechanical ventilator
Indoor unit
CAUTION
Signal wire is 3-core, polarized wire. Use 3-core shield wire to
prevent interference. The grounding method now is grounding the
closed end of the shield wire and opening (insulating) at the end.
Shield is to be grounded.(Reference distance: It is 300mm when
current capacity of power cord is less than 10A, or 500mm when
50A).
OA
When power cord is parallel with signal wire, please put them
into separate wire distribution pipes, and leave a proper distance.
Display box, remote controller, and matched resistance are the
accessories of indoor unit; wire controller is optional, if necessary
please contact to the dealer to buy.
A. Ventilation peristome
(Leak hunting siren should be installed in
places easily keep refrigerant)
This air conditioner(A/C) adopts inncouous and nonflammable
refrigerant of R410A. The locating room of the A/C
should big enough 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: 0.44[kg/m
3
] for R410A.
Outdoor unit
Indoor unit
Room full of leak refrigerant
(All refrigerant has run up)
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
+ super addition.
2. Calculate the indoor cubage (B[m]) (as the minimum cubage.
3. Calculate the refrigerant thickness.
A [kg]
Critical thickness
B [m ]
3
8.1 Check points before test running
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.
1. If indoor and outdoor units have been installed properly.
2. Whether piping and wiring is correct.
3. Whether has taken leakage inspection to the refrigerant pipe
system.
4. Whether heat insulation has been properly applied.
5. If ground wire has been correctly connected.
6. Whether take a record of the piping length or refrigerant adding
amount.
7. Whether the power supply voltage is equal with the rated
voltage.
8. If there’s barriers around air inlet/outlet.
9. Open gas side and liquid side stop valve.
10. Connect to power supply and pre-heat the AC.
installation manual
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