Pump Down Operation - Daikin CTXU25G2V1B Service Manual

SiBE12-908

Pump Down Operation

In order to protect the environment, be sure to pump down when relocating or disposing of the unit.
1) Remove the valve caps on the liquid and the gas stop valves at the pipes for
rooms A and B.
2) Run the unit on forced cooling. (Refer to the below.)
3) After 5 to 10 minutes, close the liquid stop valves at the pipes for rooms A and B
using a hex wrench.
4) After 2 to 3 minutes, stop the FORCED COOLING operation as quickly as possible
after the gas stop valves at the pipes for rooms A and B have been shut off.
5) Turn the power breaker off.
CAUTION
Run the air conditioner to cool both rooms A and B when performing a pump down.
1. FORCED COOLING operation.
1-1 Using the indoor unit "ON/OFF" button.
1) Press the "ON/OFF" button on the indoor unit in either room A or B for 5 seconds continuously.
The units in both rooms will start.
2) FORCED COOLING operation will end after around 15 minutes and the unit will stop automatically. Press the ON/OFF"
button on the indoor unit to FORCED COOLING operation to stop.
3) Use this method to FORCED COOLING operation when the outside temperature is 10°C or lower.
1-2 Using the wireless remote controller.
1) Select cooling operation and press the "ON/OFF" button. (The unit will start.)
2) Press the "TEMP
3) Press the "MODE" button twice.
(T will be displayed and the unit will go into test-run mode.)
4) Test-run mode will end after around 30 minutes and the unit will stop automatically. Press the "ON/OFF" button to force the
test-run to stop.
CAUTION
If the outside temperature is 10°C or lower, the safety device might start, preventing operation. In this situation, warm the
outside temperature thermistor on the outdoor unit to 10°C or warmer. Operation will start.
Connecting the Humidifying Hose
Either one of the following sets (optional accessories) is required when connecting humidifying hoses.
Prepare the 10 or 15m set according to the conditions of the site.
<Optional accessories>
KPMH996A10S (10m set)
Joint (φ25)
A
1
KPMH996A15S (15m set)
Joint (φ30)
F G
1
Installation / Operation Manual
" button (2 locations), and the "MODE" button at the same time.
Binding band
B
8m (With cuff)
C
(I.D. 25mm
O.D. 35mm)
2
Reducing Binding band
B
joint
(φ30→φ25)
(I.D.
30mm
O.D.
46mm)
2 6
Gas
stop valve
Humidifying hose
2m (With cuff)
D
(I.D. 25mm
O.D. 35mm)
1 1
Humidifying hose
7.5m 3.5m
H J
(I.D.
30mm
O.D.
46mm)
1 1
Installation Manual
Liquid
Hexagonal
stop valve
wrench
Close
Valve cap
Installation manual
E
1
Installation
E
manual
2m (With cuff)
D
I.D.
25mm
O.D.
35mm)
2 1
10
74