English
22
•
Please be careful not to leak refrigerant when connecting the
charging tube.
Refrigerant charging port is mounted to internal pipings of the
product, in which refrigerant is already charged by the manufac-
turer.
• Heat Recovery series (RQCEQ)
•
Open the liquid/suction/HP-LP gas shutoff valve fully. (*1)
•
Shut the lid of the electrical component box, and turn on all of
the outdoor , BS and indoor units in the same refrigerant sys-
tem.
(In order to stop liquid compression of the compressor, always
turn the power on six hours before operation and energize the
crankcase heater.)
•
When installing, perform check operation in accordance with
[Check operation]
.
After running the unit for about 45 minutes and no longer than
60 minutes(*2), the system automatically stops check opera-
tion. (*3)
Once check operation stops, it is completed unless a malfunc-
tion code is displayed. Normal operation is possible about 5
minutes after check operation is complete.
If a malfunction code is displayed, refer to the [Remote control-
ler displays malfunction code] and perform check operation
again.
(*1)
(Refer to figure 31.2)
1.
Measuring device
2.
R410A tank (with siphon)
3.
Charge hose
4.
Refrigerant flow
5.
Liquid side shutoff valve
6.
Suction gas side shutoff valve
7.
HP/LP gas side shutoff valve
8.
Refrigerant charge port
9.
Outdoor unit
10.
To indoor unit
11.
Field piping
(*2) If additional charging is required from the refrigerant tank,
more time is required for additional charging.
(*3) Press the “RETURN” button (BS3) on the outdoor unit
PCB (A1P) if check operation is forcibly cancelled.
•
Use a charging tube with a pushing projection (at the connecting
end) to connect the refrigerant charging port mounted to the shut-
off valve fixing plate.
•
Please be careful not to leak refrigerant when connecting the
charging tube.
Refrigerant charging port is mounted to internal pipings of the
product, in which refrigerant is already charged by the manufac-
turer.
11-2-3. After check operation
• After check operation is completed, record the actual amount of
refrigerant charged from the refrigerant tank on the "Service Pre-
caution" label (lower) on the electrical component box of the out-
door unit.
• Adjust local settings using the press switches (BS1-5) on the out-
door unit PCB (A1P) as necessary. Refer to “Field setting” in "Ser-
vice Precaution" label on the lid of the electrical component box
for instructions on adjusting settings.
Liquid side shutoff valve
Gas side shutoff valve
open
open
Liquid side shutoff
valve
Suction gas side
shutoff valve
HP/LP gas side
shutoff valve
open
open
open
01_EN_3P226891-14T.fm Page 22 Tuesday, September 30, 2014 7:48 PM
