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concentration.
*1. It is opening without door or opening at the top or
bottom of door with floor space more than 0.15%.
NOTES:
<Example>
Refrigerant Charge: 60kg
The Smallest
Room
Medium-sized
Small Room
Room
Mechanical Ventilation Equipment + Gas Leakage Detector & Alarm System
•
The quantity of refrigerant gas leakage against
each room should be calculated as 60kg each.
•
The refrigerant concentration must be below
3
0.42 kg/m
for each room.
The installer and system specialist shall secure
against leakage according to local regulations or
standards.
The following standards may be applicable, if local
regulations are not available.
International Organization for Standardization,
ISO5149 or European Standard, EN378 or Japan
Standard, KHKS0010.
8. Test Run
Test run should be performed according to item
8.2. And use Table 8.1 for recording test run.
WARNING
•
An electrical shock will occur by residual
voltage.
Turn OFF the power source completely
before starting the maintenance for
electrical parts.
Check to ensure that no residual voltage
exists after turning OFF the power source.
•
Check to ensure that each wire is correctly
connected at each phase of power supply. If
it is incorrectly connected, electrical parts
will be damaged, the unit will not operate
and the alarm code will be indicated. In this
case, connect each wire correctly.
•
Do not operate the system until all the check
points have been cleared.
As for the test run of indoor unit, check
Installation and Maintenance Manual
attached to the indoor unit.
Refrigerant Piping
Outdoor Unit
Indoor Unit
Large Room
8.1 Before Test Run
1. Check to ensure that the refrigerant piping
and communication between outdoor unit
and indoor units are connected to the same
refrigerant cycle.
If not, it will cause abnormal operation and a
serious accident.
Check that the DIP switch settings of the
refrigerant cycle No. (DSW1 and RSW1 [O.U.],
DSW5 and RSW2 [I.U.]) and the unit number
(RSW) for the indoor units apply to the system.
Confirm that the DIP switch settings on the
printed circuit board of the indoor units and
the outdoor units are correct. Especially, pay
attention to the setting of outdoor unit No.,
the refrigerant cycle No. and the end terminal
resistance. Refer to Chapter 6. Electrical Wiring.
2. Check to ensure that the electrical resistance
is more than 1 megohm, by measuring the
resistance between ground and the terminal
of electrical parts. If the electrical resistance is
less than 1 megohm, do not operate the system
until the electrical leakage is found and repaired
(Refer to "Caution for Insulation Resistance" for
details.).
Do not impress the voltage on the terminals for
communication (Outdoor Unit: TB2 1, 2, 3, 4 /
Indoor Unit: TB2 A, B, 1, 2). Otherwise, it may
cause failure.
3. Check to ensure that each wire, L1, L2, L3 and N
(R, S and T) is correctly connected to the power
source.
If it is incorrectly connected, the unit will not
operate and the wired controller will indicate
the alarm code "05". In this case, check and
change the phase of the power source according
to the sheet attached to the reverse side of the
service cover.
4. Check to ensure that the switch of the main
power source has been ON for more than 12
hours, to warm the compressor oil by the oil
heater.
SET FREE "air365 Max" series outdoor unit does
not operate for at most 4 hours after power
supply
(Stoppage Code d1-22).
In case of operation within 4 hours, release the
protection control as follows:
a. Supply power to the outdoor unit.
b. Wait for 30 seconds.
c. Push PSW5 on the outdoor PCB for more than
3 seconds in order to release the d1-22.
In case of using the wired controller for release.
NOTE:
8. Test Run
63
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