Panasonic cu-3e19rbu installation
Order No: PAPAMY1505100CE
Installation Manual
Air Conditioner
Outdoor Unit
CU-3E19RBU
CU-4E24RBU
Destination
U.S.A.
Canada
Please file and use this manual together with the service manual for Model No. CS-E9RKUAW CS-E12RKUAW CS-E18RKUAW,
CS-E24RKUAW, CS-ME7RKUA, CS-E12RB4UW, CS-E18RB4UW, CS-ME5RKUA, Order No. PAPAMY1501049CE,
PAPAMY1503094CE, PAPAMY1503095CE, PAPAMY1505112CE.
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
IMPORTANT SAFETYNOTICE
There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacturer.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
© Panasonic Corporation 2015
!
APPLICABLE INDOOR UNITS
Wall Mounted Type
Indoor Unit
CS-MKS7NKU
Multi-Outdoor Unit
CS-MKS9NKU CS-MKS12NKU CS-MKS18NKU CS-MKS24NKU
3-Room
4-Room
4-Room
CU-3KS19NBU
CU-4KS24NBU
CU-4KS31NBU
Semi-Concealed Type
Indoor Unit
Multi-Outdoor Unit
3-Room
4-Room
4-Room
CU-3KS19NBU
CU-4KS24NBU
CU-4KS31NBU
YES
YES
YES
CS-MKS9NB4U
&
CZ-18BT1U
YES
YES
YES
YES
YES
YES
CS-MKS12NB4U
&
CZ-18BT1U
YES
YES
YES
YES
YES
YES
CS-KS18NB4UW
&
CZ-18BT1U
YES
YES
YES
YES
YES
YES
NO
YES
YES
6
9. Installation Information
9.1 CU-3E19RBU
9.1.1 Check Points
Indoor/outdoor unit
connection cables
(Not included in the unit)
Outdoor unit power supply:
Single-phase 208-230V, 60Hz
30A switch
(circuit breaker)
(Not included in the unit)
Flexible cord x 3 core
(Not included in the unit)
Outside
wiring work
Unit C
Unit A Maximum pipe length: 25 m (82.0 ft)
Unit B Maximum pipe length: 25 m (82.0 ft)
Unit C Maximum pipe length: 25 m (82.0 ft)
Grounding work
Flexible cord x 4 core
(polychloroprene sheathed)
(Not included in the unit)
Unit B
Flexible cord x 4 core
(polychloroprene sheathed)
(Not included in the unit)
Unit A
Applicable connecting tube kit:
CZ-3F type
Total maximum pipe length: 50 m (164.0 ft)
Air purging: Air purging by vacuum pump.
Allowable
elevation:
15 m (49.2 ft) max.
The allowable
elevation between
each of the indoor
units and between
the indoor and
outdoor units.
29
9.2 CU-4E24RBU
9.2.1 Check Points
Indoor/outdoor unit
connection cables
(Not included in the unit)
Flexible cord x 4 core
Unit D
(polychloroprene sheathed)
(Not included in the unit)
Outdoor unit power supply:
Single-phase 208-230V, 60Hz
45A switch
(circuit breaker)
(Not included in the unit)
Flexible cord x 3 core
(Not included in the unit)
Outside
wiring work
Unit C
Flexible cord x 4 core
(polychloroprene sheathed)
(Not included in the unit)
Unit B
Flexible cord x 4 core
(polychloroprene sheathed)
(Not included in the unit)
Unit A
Applicable connecting tube kit:
CZ-3F type
Unit A Maximum pipe length: 25 m (82.0 ft)
Unit B Maximum pipe length: 25 m (82.0 ft)
Unit C Maximum pipe length: 25 m (82.0 ft)
Unit D Maximum pipe length: 25 m (82.0 ft)
Total maximum pipe length: 70 m (229.6 ft)
Grounding work
Air purging: Air purging by vacuum pump.
Allowable
elevation:
15 m (49.2 ft) max.
The allowable
elevation between
each of the indoor
units and between
the indoor and
outdoor units.
30
10. Installation Instruction
10.1 CU-3E19RBU
10.1.1 Select The Best Location
If an awning is built over the unit to prevent direct
sunli
ght or rain, be careful that heat radiat
the con
denser is not obstructed.
There should not be any animal or plant which
coul
d be affected by hot air discharged.
Keep the spaces indicated by arrows from
ceiling, fence or other obstacles.
Do not place any obstacles
rt circuit of the discharged air.
sho
which may cause a
Recommended installation height for outdoor un
sho
uld be above the seasonal snow
ion from
wall,
level.
10.1.1.1 Outdoor Unit Installation
Diagram
Installation parts you
should purchase (Ú)
It is advisable to avoid more
than 2 blockage directions.
For better ventilation &
it
multiple-outdoor installation,
please consult authorized
dealer/specialist.
Refrigerant piping size
Outdoor Unit CU-3E19**
Liquid - side ø1/4" (ø6.35 mm) thickness 1/32" (t0.8 mm)
Gas - side ø3/8" (ø9.52 mm) thickness 1/32" (t0.8 mm)
Outdoor Unit CU-3E19**
Min. total piping length for additional gas 98.4 ft (30 m)
If total piping length of all indoor units exceeds the
minimum len
with 0.2 oz (20g) of refrigerant (R410A) for ea
addition
Allowable piping length of each indoor unit (min. ~ max.) 9.8 ft ~ 82.0 ft (3 m ~ 25 m)
Allowable total piping length of all indoor unit 164.0 ft (50 m) or less
Height difference between indoor and outdoor unit
Height difference between indoor unit
gth listed above, additionally charge
al feet (meter) of piping.
Outdoor Unit CU-3E19***
ch
Allowable piping length
Outdoor unit located on upper side
Outdoor unit located otherwise
Outdoor unit located otherwise
Outdoor unit located on upper side
Outdoor unit located otherwise
This illustration is for explanation purposes only.
•
* Note:
Respective indoor unit installation procedure shall refer to
instruction manual provided in the indoor unit packaging.
g
h
k
i
j
Power supply cord (Ú)
(Conduit)
Connection cable (Ú)
(Conduit)
Additional drain hose (Ú)
1
/4" (6.35 mm)
Liquidsidepiping(Ú)
3
/8"(9.52mm)
Gas side piping (Ú)
49.2 ft (15 m) or less
24.6 ft (7.5 m) or less
49.2 ft (15 m) or less
24.6 ft (7.5 m) or less
49.2 ft (15 m) or less
Outdoor unit located
on upper side
g
i
Outdoor unit
j
h
tinuroodnItinuroodnI
31
Outdoor unit located
otherwise
Outdoor unit
k
Indoor unit
j
Outdoor unit
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