Sanyo KHS1232 Instruction manual

REFERENCE NO. TD701219
W
TECHNICAL DATA
12KHS32
SPLIT SYSTEM AIR CONDITIONER
FILE NO.
Indoor Model No. Product Code No.
KHS1232 1 852 658 14
Outdoor Model No. Product Code No.
CH1232 1 852 754 05
CH1232
KHS1232
Indoor Unit Outdoor Unit
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IMPORTANT!
Please Read Before Starting
This air conditioning system meets strict safety and operating
standards. As the installer or service person, it is an important
part of your job to install or service the system so it operates
safely and efficiently.
For safe installation and trouble-free operation, you must:
●Carefully read this instruction booklet before beginning
●Follow each installation or repair step exactly as shown
●Observe all local, state, and national electrical codes
●Pay close attention to all warning and caution notices
given in this manual
This symbol refers to a hazard or
unsafe practice which can result
in severe personal injury or
death.
This symbol refers to a hazard or
unsafe practice which can result
in personal injury or product or
property damage.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including fail-
ure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing
are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this sys-
tem. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and inade-
quate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause over-
heating at connection points and a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and out-
door units. Get a partner to help, and bend your knees when
lifting to reduce strain on your back. Sharp edges or thin alu-
minum fins on the air conditioner can cut your fingers.
When Installing…
…In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
…In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the
flare and union tubes before connecting them, then tighten
the nut with a torque wrench for a leak-free connection.
• Check carefully for leaks before starting the test run.
NOTE:
Depending on the system type, liquid and gas lines may be
either narrow or wide. Therefore, to avoid confusion the
refrigerant tubing for your particular model is specified as
either “narrow” or “wide” rather than as “liquid” or “gas.”
When Servicing
• Turn the power OFF at the main power box (mains)
before opening the unit to check or repair electrical parts
and wiring.
• Keep your fingers and clothing away from any moving
parts.
• Clean up the site after you finish, remembering to check
that no metal scraps or bits of wiring have been left inside
the unit being serviced.
WARNING
CAUTION
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Table of Contents
Page
1. OPERATING RANGE .................................................................................................................. 1
2. SPECIFICATIONS........................................................................................................................ 2
3. DIMENSIONAL DATA .................................................................................................................. 5
4. COOLING CAPACITY .................................................................................................................. 7
5. HEATING CAPACITY ................................................................................................................... 9
6. AIR THROW DISTANCE CHART ................................................................................................ 10
7. REFRIGERANT FLOW DIAGRAM .............................................................................................. 12
8. INSTALLATION INSTRUCTIONS ................................................................................................ 13
9. ELECTRICAL DATA ..................................................................................................................... 18
10. ELECTRIC WIRING DIAGRAMS................................................................................................. 19
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1. OPERATING RANGE
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Cooling Maximum 95°F DB / 71°F WB 115°F DB
Minimum 67°F DB / 57°F WB 67°F DB
Heating Maximum 80°F DB / 67°F WB 75°F DB / 65°F WB
Minimum — DB / — WB 17°F DB / 15°F WB
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Power Source 230 / 208V – Single phase – 60Hz
Cooling Heating
Capacity BTU/h 11,700 / 11,500 13,000 / 12,700
kW 3.43 / 3.37 3.81 / 3.72
Air circulation (High) ft3/min. 360 / 330
Moisture removal (High) Pints/h 3.3 / 3.2 —
Voltage rating V 230 / 208 230 / 208
Available voltage range V 253 to 187
Running amperes A 5.5 / 5.9 5.1 / 5.4
Power input W 1,210 / 1,180 1,170 / 1,120
Power factor % 95 / 96 99 / 99
S.E.E.R. (H.S.P.F.) 10.0 / 10.0 (6.8 / 6.8)
Compressor locked rotor amperes A 34
Heater element kW 1.5 / 1.23
Controls / Temperature control Microprocessor / I.C. thermostat
Control unit Wireless remote control unit
Timer ON/OFF, 24-hours & Program
Fan speeds Indoor / Outdoor 3 and Auto / 2 (Auto)
Airflow direction (Indoor) Horizontal Manual
Vertical Auto
Air filter Washable, Anti-mold
Compressor Rotary (Hermetic)
Refrigerant / Amount charged at shipment lbs. (g) R22 / 2.51 (1,140)
Refrigerant control Capillary tube
Operation sound Indoor – Hi / Me / Lo dB-A 43 / 39 / 36
Outdoor – Hi dB-A 49
Refrigerant tubing connections Flare type
Max. allowable tubing length at shipment ft. (m) 33 (10)
Refrigerant tube Narrow tube in. (mm) 1/4 (6.35)
diameter Wide tube in. (mm) 1/2 (12.7)
Refrigerant tube kit / Accessories Optional / Hanging wall bracket
Indoor unit Outdoor unit
Unit dimensions Height in. (mm) 14-3/16 (360) 20-7/8 (530)
Width in. (mm) 38-31/32 (990) 29-17/32 (750)
Depth in. (mm) 7-13/16 (198) 11-1/32 (280)
Package dimensions Height in. (mm) 10-23/32 (272) 23-1/2 (597)
Width in. (mm) 42-17/32 (1,080) 35-13/32 (899)
Depth in. (mm) 18-1/32 (458) 13-27/32 (352)
Weight Net lbs. (kg) 29.7 (13.5) 92.5 (42.0)
Shipping lbs. (kg) 37.4 (17.0) 99.1 (45.0)
Shipping volume ft3(m3) 4.8 (0.13) 6.5 (0.18)
Performance
Electrical Rating
Features
Dimensions & Weight
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80°F DB/67°F WB
Outdoor air temperature 95°F DB/75°F WB
Heating: Indoor air temperature 70°F DB
Outdoor air temperature 47°F DB/43°F WB
2. SPECIFICATIONS
2-1. Unit Specifications
Indoor unit KHS1232
Outdoor unit CH1232
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2-2. Major Component Specifications
2-2-1. Indoor Unit
Indoor unit KHS1232
Remote Control Unit RCS-KHS2422W
POW-KHS1222-A
Control circuit fuse AC 250V - 3A
Switch Ass’y SW-KHS2412W
AH-KH1212
Input (230 / 208V) kW 1.5 / 1.23
Protective thermostat OFF 140 ± 5°F, ON 122 ± 9°F
Thermo fuse Cut-off 341 + 2, –5°F, 277V - 15A
Type Cross-flow
Number … Dia. and length in. (mm) 1 … O.D. 4 (100), L 30 (760)
Model … Number UF4Q-11A6P … 1
No. of pole … rpm (230V, High) 4 … 1,330
Nominal output W 10
Coil resistance ΩBRN – WHT: 281.6
(Ambient temp. 68°F) WHT – VLT: 45.3
VLT – ORG: 56.0
ORG – YEL: 117.0
YEL – PNK: 59.4
Safety
Type Internal protector
Operating Open °F 248 ± 9
devices temp. Close Automatic reclosing
Run capacitor µF 0.8
VAC 440
Model M2EA24ZA01
Rating 208 to 230V, 60Hz
No. of pole … rpm 8 … 3
Output W 2.5
Coil resistance (at 68°F) kΩ16.45 ± 15%
Coil Aluminum plate fin / Copper tube
Rows … Fins per inch 2 … 14.1
Face area ft.2(m2) 2.08 (0.19)
Controller
PCB
Fan
Heater Element
(Aux. Heater)
Fan Motor
Heat
Exch.
Louver
Motor
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
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POW-CH1232
Control circuit fuse AC 250V - 3A
Type Rotary (hermetic)
Model … Number C-R95H6E … 1
No. of cyl. … rpm 1 … 3,500
Nominal output W 950
Compressor lubricant cc 600
Coil resistance ΩC – R: 1.89
(Ambient temp. 77°F) C – S: 4.90
Type Internal External
Overload relay models — MST00AKU-9200
Safety Operating Open °F — 275 ± 9
devices temp. Close °F — 156 ± 27
Operating amp. —Trip in 6 to 16 sec.
(Ambient temp. 77°F) at 21.0A
Run capacitor µF 20
VAC 400
Crank case heater 230V - 20W
Type Propeller
Number … Dia. in. (mm) 1 … 15-3/4 (400)
Model UE6S-21L6P
No. of pole … rpm (230V, High) 6 … 840
Nominal output W 20
Coil resistance
ΩBRN – WHT: 201.7
WHT – YEL: 156.1
(Ambient temp. 68°F) YEL – PNK: 27.1
Safety
Type Internal protector
Operating Open °F 248 ± 9
devices temp. Close Automatic reclosing
Run capacitor µF 2.5
VAC 440
Coil Aluminum plate fin / Copper tube
Rows … Fins per inch 2 … 15.9
Face area ft.2(m2) 3.29 (0.30)
External Finish Acrylic baked-on enamel finish
4
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Compressor
Fan Motor Fan
Heat
Exch.
Controller
PCB
2-2-2. Outdoor Unit
Outdoor unit CH1232
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38-31/32
14-3/16
7-13/16
Rear panel
(Center point of gravity)
Drain hose O.D. 1-1/4
Narrow tube O.D. 1/4
Wide tube O.D. 1/2
Center of
tubing hole
(For right rear)
5-19/32
1-61/64
Wireless remote
control unit
6-7/64
2-13/64 19/32
Dimension: in.
3. DIMENSIONAL DATA
Indoor unit KHS1232
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4 ×15/32 dia. hole
Air intake
Air discharge
23-15/16 2-3/8
29-17/32
Air
intake
Check port
2-1/4 11-1/32
20-7/8
21/32
2-23/32 2-3/8
1/4" narrow tubing
service valve
1/2" wide tubing
service valve
10-23/32
11-7/8
Dimension: in.
Outdoor unit CH1232
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TC : Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
KW : Compressor Input (kW)
Rating conditions (* mark) are: Outdoor ambient temperature 95°F DB
Indoor unit entering air temperature 80°F DB/67°F WB
Rating Capacity: 11,700 BTU/h Air Flow Rate: 360 CFM
Evaporator Condenser
Ent. Temp. °F (°C) Ambient Temp. °F (°C)
WB DB 75 85 95 105 115
(23.9) (29.4) (35.0) (40.6) (46.1)
TC 11,580 11,060 10,530 9,930 9,130
KW 0.89 0.97 1.05 1.14 1.25
59 72 (22.2) SHC 8,690 8,430 8,170 7,880 7,500
(15.0) 76 (24.4) SHC 9,850 9,590 9,340 9,050 8,670
80 (26.7) SHC 11,070 10,810 10,530 9,930 9,130
84 (28.9) SHC 11,580 11,060 10,530 9,930 9,130
88 (31.1) SHC 11,580 11,060 10,530 9,930 9,130
TC 11,980 11,610 11,150 10,540 9,710
KW 0.89 0.98 1.07 1.16 1.28
63 72 (22.2) SHC 7,260 7,090 6,890 6,620 6,260
(17.2) 76 (24.4) SHC 8,430 8,260 8,050 7,780 7,420
80 (26.7) SHC 9,650 9,480 9,270 9,000 8,640
84 (28.9) SHC 10,810 10,640 10,440 10,170 9,710
88 (31.1) SHC 11,980 11,610 11,150 10,540 9,710
TC 12,310 12,110 *11,700 11,060 10,300
KW 0.90 0.99 1.08 1.18 1.31
67 72 (22.2) SHC 5,800 5,720 5,550 5,290 4,980
(19.4) 76 (24.4) SHC 6,960 6,880 6,710 6,450 6,150
80 (26.7) SHC 8,180 8,100 7,930 7,670 7,370
84 (28.9) SHC 9,350 9,260 9,100 8,830 8,530
88 (31.1) SHC 10,510 10,430 10,260 10,000 9,700
TC 12,690 12,480 12,170 11,620 10,940
KW 0.91 1.00 1.10 1.21 1.33
71 72 (22.2) SHC 4,290 4,210 4,090 3,890 3,640
(21.7) 76 (24.4) SHC 5,460 5,380 5,260 5,060 4,810
80 (26.7) SHC 6,670 6,590 6,480 6,270 6,030
84 (28.9) SHC 7,840 7,760 7,640 7,440 7,190
88 (31.1) SHC 9,000 8,930 8,810 8,600 8,360
TC 12,940 12,800 12,520 12,070 11,580
KW 0.93 1.02 1.11 1.24 1.37
75 76 (24.4) SHC 3,960 3,910 3,820 3,670 3,510
(23.9) 80 (26.7) SHC 5,180 5,130 5,030 4,890 4,720
84 (28.9) SHC 6,340 6,290 6,200 6,050 5,890
88 (31.1) SHC 7,510 7,460 7,360 7,220 7,050
4. COOLING CAPACITY
Indoor unit KHS1232
Outdoor unit CH1232
230V single phase 60Hz
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TC : Total Cooling Capacity (BTU/h)
SHC : Sensible Heat Capacity (BTU/h)
KW : Compressor Input (kW)
Rating conditions (* mark) are: Outdoor ambient temperature 95°F DB
Indoor unit entering air temperature 80°F DB/67°F WB
Rating Capacity: 11,500 BTU/h Air Flow Rate: 330 CFM
Evaporator Condenser
Ent. Temp. °F (°C) Ambient Temp. °F (°C)
WB DB 75 85 95 105 115
(23.9) (29.4) (35.0) (40.6) (46.1)
TC 11,390 10,870 10,350 9,760 8,970
KW 0.88 0.96 1.04 1.13 1.24
59 72 (22.2) SHC 8,390 8,130 7,870 7,580 7,200
(15.0) 76 (24.4) SHC 9,470 9,210 8,950 8,670 8,290
80 (26.7) SHC 10,610 10,340 10,090 9,760 8,970
84 (28.9) SHC 11,390 10,870 10,350 9,760 8,970
88 (31.1) SHC 11,390 10,870 10,350 9,760 8,970
TC 11,780 11,410 10,960 10,360 9,550
KW 0.89 0.97 1.06 1.15 1.27
63 72 (22.2) SHC 7,050 6,880 6,670 6,400 6,040
(17.2) 76 (24.4) SHC 8,130 7,960 7,750 7,490 7,120
80 (26.7) SHC 9,260 9,090 8,890 8,620 8,260
84 (28.9) SHC 10,350 10,180 9,970 9,700 9,340
88 (31.1) SHC 11,430 11,260 10,960 10,360 9,550
TC 12,100 11,900 *11,500 10,870 10,120
KW 0.89 0.98 1.07 1.17 1.29
67 72 (22.2) SHC 5,660 5,580 5,410 5,150 4,850
(19.4) 76 (24.4) SHC 6,750 6,670 6,500 6,230 5,930
80 (26.7) SHC 7,880 7,800 7,630 7,370 7,060
84 (28.9) SHC 8,970 8,880 8,710 8,450 8,150
88 (31.1) SHC 10,050 9,970 9,800 9,540 9,230
TC 12,480 12,270 11,960 11,420 10,750
KW 0.90 0.99 1.09 1.20 1.32
71 72 (22.2) SHC 4,240 4,160 4,040 3,840 3,590
(21.7) 76 (24.4) SHC 5,330 5,250 5,130 4,930 4,680
80 (26.7) SHC 6,460 6,380 6,260 6,060 5,810
84 (28.9) SHC 7,540 7,460 7,350 7,140 6,900
88 (31.1) SHC 8,630 8,550 8,430 8,230 7,980
TC 12,720 12,580 12,310 11,870 11,390
KW 0.92 1.01 1.10 1.23 1.35
75 76 (24.4) SHC 3,910 3,860 3,770 3,620 3,460
(23.9) 80 (26.7) SHC 5,040 5,000 4,900 4,750 4,590
84 (28.9) SHC 6,130 6,080 5,990 5,840 5,680
88 (31.1) SHC 7,210 7,170 7,070 6,920 6,760
Indoor unit KHS1232
Outdoor unit CH1232
208V single phase 60Hz
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Outdoor temperature (°F DB)
0
10
20
30
40
50
60
70
80
90
100
110
120
Heating capacity ratio (%)
NOTE
1) …Point of rating condition
Black dot in the chart indicates the following rating condition.
Indoor : 70°F DB
Outdoor : 47°F DB / 43°F WB
2) Above characteristics indicate instantaneous operation, which does not take into
consideration defrost operation.
3) Fan speed : High
47 50 6040302017
5. HEATING CAPACITY
Indoor unit KHS1232
Outdoor unit CH1232
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6. AIR THROW DISTANCE CHART
Indoor unit KHS1232
230V
Room air temperature : 80°F
Fan speed : High
Cooling
208V
Room air temperature : 80°F
Fan speed : High
5
Axis air velocity (ft./sec.) Vertical distance (ft.)
Horizontal distance (ft.)
10 15 20 25 30
0
5
10
30°
15
Axis air velocity
0°
5
Axis air velocity (ft./sec.) Vertical distance (ft.)
Horizontal distance (ft.)
10 15 20 25 30
0
5
10
30°
15
Axis air velocity
0°
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Indoor unit KHS1232
230V
Room air temperature : 70°F
Fan speed : High
Heating
208V
Room air temperature : 70°F
Fan speed : High
5
Axis air velocity (ft./sec.) Vertical distance (ft.)
Horizontal distance (ft.)
10 15 20 25 30
0
5
10
15
Axis air velocity
45°
60°
5
Axis air velocity (ft./sec.) Vertical distance (ft.)
Horizontal distance (ft.)
10 15 20 25 30
0
5
10
15
Axis air velocity
45°
60°
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Compressor
4-way
valve
Accumulator
Accumulator
Wide tube
service
valve
Wide tube
O.D.
1/2"
(12.7 mm)
Narrow
tube
service
valve
Narrow tube
O.D.
1/4"
(6.35 mm)
Heat exchanger
Heat exchanger
Muffler
Capillary tube
Capillary tube
Strainer
Check
valve
Cooling cycle
Heating cycle
Indoor Unit Outdoor Unit
Drier
Check
port
7. REFRIGERANT FLOW DIAGRAM
Insulation of Refrigerant Tubing
To prevent heat loss and wet floors due to dripping of
condensation, both the wide and narrow tubes
must be well insulated with a proper insulation
material. The thickness of the insulation should be a
min. 5/16 in.
IMPORTANT
Wide tube
Thickness:
Min. 5/16"
Insulation
Narrow tube
Thickness:
Min. 5/16"
CAUTION
After a tube has been insu-
lated, never try to bend it
into a narrow curve
because it can cause the
tube to break or crack.
Indoor unit KHS1232 Outdoor unit CH1232
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8. INSTALLATION INSTRUCTIONS
8-1. Installation Site Selection
Indoor Unit
WARNING To prevent abnormal heat
generation and the possibility
of fire, do not place obsta-
cles, enclosures and grilles in
front of or surrounding the air
conditioner in a way that may
block air flow.
AVOID:
●areas where leakage of flammable gas may be
expected.
●places where large amounts of oil mist exist.
●direct sunlight.
●nearby heat sources that may affect performance of
the unit.
DO:
●select an appropriate position from which every cor-
ner of the room can be uniformly air conditioned.
(High on a wall is best.)
●select a location that will hold the weight of the unit.
●select a location where tubing and drain hose have
the shortest run to the outside. (Fig. 1)
●allow room for operation and maintenance as well as
unrestricted air flow around the unit. (Fig. 2)
●install the unit within the maximum elevation differ-
ence (H) above or below the outdoor unit and within
a total tubing length (L) from the outdoor unit as
detailed in Table 1 and Fig. 3.
Table 1
Max. allowable Limit of Limit of Required amount
Model tubing length tubing elevation of additional
at shipment length (L) difference (H) refrigerant*
(ft.) (ft.) (ft.) (oz./ft.)
CH1232 33 65 23 0.27
*If total tubing length becomes 33 to 65 ft. (max.), charge additional refrigerant (R22) by 0.27 oz./ft.
*No additional charge of compressor oil is necessary.
Drain hose
Indoor unit
Outside drainage
Fig. 1
;
;
6"
min.
6"
min.
6" min.
Fig. 2
INDOOR
UNIT
Tubing length (L)
OUTDOOR
UNIT
Elevation
difference (H)
Fig. 3
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AVOID:
●heat sources, exhaust fans, etc. (Fig. 4a)
●damp, humid or uneven locations.
DO:
●choose a place as cool as possible.
●choose a place that is well ventilated and where the
outside air temperature does not constantly exceed a
maximum 115°F (45°C).
●allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 4b)
●install the unit on the 2 accessory steel rails bolted
down to a concrete pad or cinder block platform.
These accessory parts are provided to protect the
unit from possible water and/or icing problems and
ensure longer service life. (Fig. 4c)
●use lug bolts or equal to bolt down unit, reducing
vibration and noise.
Installing the Outdoor Unit in Heavy Snow Areas
In locations where wind-blown snow can be a problem,
snow-proof vents should be fitted to the unit and direct
exposure to the wind should be avoided as much as
possible. These problems may occur if proper counter-
measures are not taken:
●The fan in the outdoor unit may not run, causing the
unit to be damaged.
●There may be no air flow.
●The tubing may freeze and burst.
●The condenser pressure may drop because of strong
wind and the indoor unit may freeze.
Outdoor Unit
Outdoor unit
Hot air
Heat source
Exhaust fan
Fig. 4a
Air discharge Air intake
2"
16"
2"
Air intake
10"
Obstacle
Fig. 4b
Accessory
steel rails
Outdoor Unit
Fig. 4c
CAUTION
Indoor unit
Floor level
Wall
Minimum height
from floor level
4.9 ft.
For stable operation of the air con-
ditioner, do not install wall-mount-
ed type indoor units under 4.9 ft.
from the floor level.
In regions with heavy snowfall, the out-
door unit should be provided with a solid,
raised platform and snow-proof vents.
The platform should be higher than the
maximum snow depth.
IMPORTANT
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8-2. Remote Control Unit Installation
Position
The remote control unit can be operated from either a
non-fixed position or a wall-mounted fixed position.
To ensure that the air conditioner operates correctly, do
not install the remote control unit in the following places:
●in direct sunlight
●behind a curtain or other place where it is covered
●more than 25 ft. away from the air conditioner
●in the path of the air conditioner’s airstream
●where it may become extremely hot or cold
●where it may be subject to electrical or magnetic inter-
ference
1) If Non-fixed Position
Raise the rear plate of the remote control unit mounting
cradle and insert the remote control unit. The unit can be
used either in that position (placed on a table, for
instance) or held in the hand. (Fig. 5)
2) If Wall-mounted Fixed Position
Install the remote control unit at a convenient location on a
nearby wall. However, before attaching the remote control
unit mounting cradle, check that the remote control unit
can operate from the desired wall position. (Fig. 6)
8-3. Address Switches
If you are installing more than 1 indoor unit (up to 4) in the
same room, it is necessary for you to assign each unit its
own address so each one is operated by its own remote
control unit. You assign the addresses by matching the
switch positions of each indoor unit with the switch posi-
tions of its remote control unit. The switches of the remote
control unit are shown in Fig. 7.
For instance, to set up 2 indoor units, switch Unit A’s
address switches and the switches of its remote control
unit to OFF –OFF. Then switch Unit B’s address switches
and the switches of its remote control unit to ON –OFF. It
is important that you match the switches of the air condi-
tioner unit with the switches of its remote control unit.
1) Finding the Address Switches
Remove the battery compartment lid and unit’s 2 batter-
ies. You can see then the switches inside the battery com-
partment. (Fig. 7)
Remote Control Unit
Binding-head
tapping screw
(3 16 mm (5/8"))
×
Fig. 6
Rear
plate
Remote control unit
Remote control unit
mounting cradle
Fig. 5
12
ON OFF ON OFF
Address
ON OFF OFFON
Address switch
(for transmitting)
Addresses 1 and 2 are
both in the OFF position
at time of shipment.
12
Fig. 7
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2) Switch Positions for Up to 4 Units
Table 2 shows the positions you can use for up to 4
indoor units installed in the same room.
Table 2
An indoor unit cannot be remote controlled if its remote
control unit is too far away (more than 25 ft.). If the
remote control unit does not seem to work correctly,
bring it closer to the unit being operated and try again.
For this reason, if the remote control unit is to be used
from a fixed position, operation should be checked at
that position before mounting.
NOTE
Indoor Unit
Unit No.
Remote control unit Indoor unit
121 2
1OFF OFF OFF OFF
2ON OFF ON OFF
3ON ON ON ON
4OFF ON OFF ON
ON
1 2
PCB
Address switch
(for receiving)
Addresses 1 and 2 are
both in the OFF position
at time of shipment.
Fig. 8
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8-4. Recommended Wire Length and
Size
Regulations on wiring diameter differ from locality to
locality. For field wiring requirements, please refer to
your local electrical codes. Carefully observe these reg-
ulations when carrying out the installation.
Table 3 lists recommended wire lengths and size for
power supply systems.
Table 3
Model AWG Power Source Fuse or Breaker
ABC Capacity
CH1232 12 14 18 1 phase, 230/208 V 20 A
WARNING ●Be sure to comply with local
codes on running the wire
from the indoor unit to the
outdoor unit (size of wire
and wiring method, etc.).
●Each wire must be firmly
connected.
●No wire should be allowed
to touch refrigerant tubing,
the compressor, or any
moving part.
1
2
3
4
G
TERMINAL 4P
INDOOR UNIT DISCONNECT
SWITCH
(Field supply)
Inter-unit power line
(Line voltage)
Inter-unit
control line
(Low voltage 12 V DC)
Grounding line
Power supply
L1
L2
To
branch circuit
Ground
1
2
3
4
5
6
G
A
B
C
TERMINAL6P
OUTDOOR UNIT
WIRING SYSTEM DIAGRAM
Refer to the WIRING SYSTEM DIAGRAM for the
meaning of “A”, “B”and “C”in Table 3.
NOTE
NOTE
1. shows field wiring.
2. Separately wire the control and power lines.
3. Use heat-proof electrical wiring capable of
withstanding temperatures up to 167°F.
●To avoid the risk of
electric shock, each air
conditioner unit must
be grounded.
WARNING
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