21
10 TEST RUNNING
Operate according to "key points for test running" on the electric control box cover.
11 PRECAUTIONS ON REFRIGERANT LEAKAGE
● Test running can not start until the outdoor unit has been connected to the power for 12 hours.
● 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.)
CAUTION
Room is filled of leakage refrigerant
(All refrigerant has leaked out.)
4/6kW Fig.11-1
Outdoor Unit
Indoor Unit
Install mechanical ventilator to reduce the refrigerant thickness ,under critical level. (ventilate regularly).
Install leak alarm facility related to mechanical ventilator if you can not regularly ventilate.
2
Requirments for charge limits in unventilated areas:
The maximum refrigerant charge in appliance shall be in accordance with the following:
m
max = 2.5 x (LFL) x 1.8 x (A)
or the required minium floor area Amin to install an appliance with refrigerant charge m
c shall be in accordance with following:
A
min=( mc / ( 2.5 x (LFL) x 1.8))
where
m
max is the allowable maximumm charge in a room,in kg
A is the room area, in m
A
min is the required minimum room area ,in m
m
c is the refrigerant charge in appliance,in kg
LFL is the lower flammable limit in kg/m ,the value is 0.306 for R32 refrigerant
5/4 1/2
3
5/4 2
●
●
●
When the refrigerant charge in appliance is more than 1.842kg, following requirments should be complied with.
2
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