Panasonic cu-2e18nbu installation
Order No: PHAAM1111120A1
Installation Manual
Outdoor Unit
CU-2E18NBU
Please file and use this manual together with the service manual for Model No. CS-E9NKUAW CS-E12NKUAW, Order No.
PHAAM1111087C1.
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.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.
© Panasonic HA Air-Conditioning (M) Sdn. Bhd. 2011.
Unauthorized copying and distribution is a violation of law.
Item Unit OUTDOOR UNIT
Air Volume High m3/min (ft3/min) 37.2 (1313)
Refrigerant Control Device Expansion Valve
Refrigerant Oil FV50S
Refrigerant (R410A) g (oz) 1.92k (67.8)
Dry Bulb Wet Bulb
Cooling
Indoor Operation Range
Heating
Cooling
Outdoor Operation Range
Heating
Maximum °C (°F) 32 (89.6) 23 (73.4)
Minimum °C (°F) 16 (60.8) 11 (51.8)
Maximum °C (°F) 30 (86.0) —
Minimum °C (°F) 16 (60.8) —
Maximum °C (°F) 43 (109.4) 26 (78.8)
Minimum °C (°F) 16 (60.8) 11 (51.8)
Maximum °C (°F) 24 (75.2) 18 (64.4)
Minimum °C (°F) -15 (5.0) -16 (3.2)
Note
Specifications are subject to change without notice for further improvement.
Multi split combination possibility:
o A single outdoor unit enables air conditioning of up to two separate rooms for CU-2E18NBU.
Outdoor Unit
CU-2E18NBU
A B
2.8 kW CS-E9NKUAW
Wall
Capacity range of connectable indoor units From 5.6 kW to 6.4 kW
1 room maximum pipe length (m (ft)) 25 (82.0)
Allowable elevation (m (ft)) 15 (49.2)
Total allowable pipe length (m (ft)) 50 (164.0)
Total pipe length for maximum chargeless length (m (ft)) 20 (65.6)
Piping Length
Additional gas amount over chargeless length (g/m (oz/ft)) 20 (0.2)
Remarks for CU-2E18NBU
1. At least two indoor units must be connected.
2. The total nominal cooling capacity of indoor untis that will be connected to outdoor unit must be within connectable capacity range of
indoor unit.
(as shown in the table above)
Example: The indoor units’ combination below is possible to connect to CU-2E18NBU. (Total nominal capacity of indoor units is between
5.6 kW to 6.4 kW)
1) Two CS-E9NKUAW only. (Total nominal cooling capacity is 5.6 kW)
2) One CS-E9NKUAW and one CS-E12NKUAW. (Total nominal cooling capacity is 6.0 kW)
Specifications are subject to change without notice for further improvement.
3.2 kW CS-E12NKUAW
Note: “
• •
• •
•” : Available
6
9. Installation Information
9.1 Check Points
QUICK GUIDE PIPING AND ELECTRICAL SPECIFICATION
Indoor (ID) &
Outdoor (OD)
units: Possible
Combination
Patterns
Outdoor (OD):
CU-2E18NBU
Indoor (ID): 2
UNITS OF CSE9NKUAW
Outdoor (OD):
CU-2E18NBU
Indoor (ID): 2
UNITS OF CSE12NKUAW
Outdoor (OD):
CU-2E18NBU
Indoor (ID): 1
UNIT OF CSE9NKUAW +
1 UNIT OF
CS-E12NKUAW
Capacity
Refrige-
(Btu/h)
16700 R410A
rant
Piping size
Gas Liquid
Ø3/8”
(Ø9.52mm)
Ø1/4”
(Ø6.35mm)
Standard
pipe
length
24.6 ft
Min.
Max.
pipe
Max.
Eleva-
tion
See
Step 1
each ID
from
length
OD to
for
each
ID unit
unit
9.8 ft 82.0 ft 164.0 ft 65.6 ft
Max.
total
length
Min. total
pipe
length
for
additional
gas
Additional
refri-
ge-
rant
0.2
oz / ft
Power
supply
208/230V
60 Hz
MCA 20A
MOP
25A
Power
supply
AWG12 AWFG16
wire
size
OD-ID
connection
wire size
Example:
If total piping length of all installed indoor units is at 68.6 ft, the quantity of additional refrigerant should be 0.6 oz ......
(68.6 - 65.6) ft x 0.2 oz/ft = 0.6 oz.
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