Table of Contents
Advertisement
INSTALLATION OF THE OUTDOOR UNIT
Fixing of outdoor
○Make sure that the unit is stable in installation.
or unit
Fix the unit to stable base.
○When installing the unit at a higher place or where
W)
it could be toppled by strong winds, secure the unit
or
firmly with foundation bolts, wire, etc.
Electric wiring work
○Perform wiring, making wire terminal numbers
conform to terminal numbers of indoor unit terminal
block.
○Connect using ground screw located near
○Always perform grounding system installation work with the power cord unplugged.
○Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire.
○In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections.
○Grounding terminals are provided in the control box.
hole (ø65)
Always use an earth leakage circuit breaker designed for inverter circuits
CAUTION
to prevent a faulty operation.
nit : mm )
Phase
Model
SRK25 / DXK09
Single
SRK35 / DXK12
-phase
SRK45 / DXK15
○The specifications shown in the above table are for units without heaters. For units with heaters, refer to the
rew of the lid
installation instructions or the construction instructions of the indoor unit.
ened securely.
○Switchgear or Circuit breaker capacity which is calculated from MAX. over current should be chosen along the
regulations in each country.
cover
○The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than
three cables contained in a conduit and a voltage drop is 2%. For an installation falling outside of these conditions,
Lid
please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.
CONNECTION OF REFRIGERANT PIPINGS
Preparation
the
n I
d
o
r o
(Do not turn)
○Remove the flared nuts.
(on both liquid and gas sides)
CAUTION
●
Flaring work
n
Measurement B
Flaring block
Copper pipe
Air purge
Indoor - Outdoor
connecting wire
mark.
power cable, indoor - outdoor connecting wire circuit diagram
Switchgear or Circuit Breaker
Earth leakage
Over current protector
breaker
Switch breaker
rated capacity
15A, 30mA,
30A
16A
0.1sec or less
Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.
O
u
d t
o
r o
Press
Press
Remove
Remove
○Remove the flared nuts.
(on both liquid and gas sides)
Do not apply refrigerating machine oil to the flared surface.
Measurement B (mm)
Copper pipe
Clutch type flare tool
Conventional (R22) flare tool
diameter
for R410A
Clutch type Wing nut type
6.35
0.0~0.5
1.0~1.5
9.52
0.0~0.5
1.0~1.5
12.7
0.0~0.5
1.0~1.5
Drain piping work
CAUTION
○Execute drain piping by using a drain elbow and drain grommets supplied
Please connect the
earthed line of indoor
○Water may drip where there is a larger amount of drain water. Seal around
and outdoor connect-
ing wire to a bracket
part of the illustration.
○Condensed water may flow out from vicinity of operation valve or
○Where you are likely to have several days of sub-zero temperatures in a
Power cable
Interconnecting and
Power source
grounding wires
(minimum)
(minimum)
2.0mm
2
1.5mm
2
X 4
○When condensed water needs to be led to a drain, etc., install the unit on
Dimension A
( Unit : mm )
Liquid side : 9.1
Gas side Model SRK25/35,
A
DXK09/12 : 13.2
Model SRK45,
DXK15
○Install the removed flared nuts to the pipes to be connected,
then flare the pipes.
Use a flare tool designed for R410A or a conventional flare
tool. Please note that measurement B (protrusion from the
flaring block) will vary depending on the type of a flare tool in
use. If a conventional flare tool is used, please use a copper
1.5~2.0
pipe gauge or a similar instrument to check protrusion so
1.5~2.0
that you can keep measurement B to a correct value.
2.0~2.5
Compound pressure gauge
Operation valve
Pressure gauge
cap
separately as accessories, where water drained from the outdoor unit is a
problem.
the drain elbow and drain grommets with putty or adequate caulking
material.
connected pipes.
row, do not use a drain elbow and drain grommets. (There is a risk of
drain water freezing inside and blocking the drain.)
CAUTION
Do not put a grommet on this hole.
This is a supplementary drain hole
to discharge drain water, when a
large quantity of it is gathered.
⑦ Grommet
Drain hose
⑧ Drain elbow
(To be procured on the installer's part)
a flat base (supplied separately as an option part) or concrete blocks.
Then, please secure space for the drain elbow and the drain hose.
Connection
Liquid side
Indoor
Outdoor
Gas side
(Do not turn)
: 16.6
○Connect the pipes on both liquid and gas sides.
○Tighten the nuts to the following torque.
Liquid side( φ 6.35) : 14.0 ~ 18.0 N ・ m (1.4~1.8 kgf ・ m)
Gas side ( φ 9.52) : 34.0 ~ 42.0 N ・ m (3.4~4.2 kgf ・ m)
( φ 12.7) : 49.0 ~ 61.0 N ・ m (4.9~6.1 kgf ・ m)
CAUTION
Do not apply excess torque to the flared nuts.
Otherwise, the flared nuts may crack depending on the
conditions and refrigerant leak may occur.
Insulation of the connection portion
Clearance
Liquid side
Gas side
Hide quick links:
Advertisement
Table of Contents
Troubleshooting
