Please read this owner’s manual carefully
before operating the unit and keep it for future reference.
DUCTABLE UNIT
MULTIZONE HEAT PUMP
Owner’s Manual
INVERTER
9 000 to 24 000 BTU/hr
Models:
SMD09KCHVS-I
SMD12KCHVS-I
SMD18KCHVS-I
SMD24KCHVS-I
2
TABLE OF CONTENTS
Operation notices .................................................................................................................................................................3
Explanation of symbols
........................................................................................................................................................3
User notice
................................................................................................................................................................................4
Precautions
................................................................................................................................................................................4
Working temperature range
...............................................................................................................................................6
Preparation before installation ..................................................................................................................................7
Outline dimensions of the indoor unit
...........................................................................................................................7
Required installation clearance distances diagram
....................................................................................................7
Selection of installation location
.......................................................................................................................................8
Requirements for electrical connection
.........................................................................................................................9
Installation ..............................................................................................................................................................................10
Installation of indoor unit
................................................................................................................................................. 10
Installation of air supply duct
.......................................................................................................................................... 11
Drawings of the air supply outlet and returned air inlet
....................................................................................... 12
Installation of return air duct
........................................................................................................................................... 12
Installation of condensate pipe
...................................................................................................................................... 13
Design of drain pipe
........................................................................................................................................................... 14
Installation of drain pipe
................................................................................................................................................... 14
Precaution for lift pipe
....................................................................................................................................................... 15
Test of drainaige system
.................................................................................................................................................... 16
Piping
....................................................................................................................................................................................... 16
Insulation of refrigerate pipe
........................................................................................................................................... 16
Wiring between the wire and the wiring terminal
.................................................................................................. 17
Wiring of the power cord (single-phase)
..................................................................................................................... 18
Wiring of the signal line of the wired controller
....................................................................................................... 18
Electrical specications
...................................................................................................................................................... 19
Malfunction ............................................................................................................................................................................20
Malfunction analysis
........................................................................................................................................................... 20
Maintenance ..........................................................................................................................................................................21
Cleaning and maintenance
.............................................................................................................................................. 21
Cleaning the lter
................................................................................................................................................................ 21
3
OPERATION NOTICES
EXPLANATION OF SYMBOLS
Indicates a hazardous situation that, if not avoided,
will result in serious injury or death.
Indicates a hazardous situation that, if not avoided,
could result in serious injury or death.
Indicates a hazardous situation that, if not avoided,
may result in minor or moderate injury.
Indicates important but not hazard-related information,
used to indicate risk of property damage.
Indicates a hazard and it is assigned to the signal words
DANGER, WARNING or CAUTION.
CAUTION
WARNING
NOTICE
DANGER
4
USER NOTICE
• The total capacity of the indoor units running at the same time cannot exceed 150% of the outdoor
unit capacity. Otherwise, the cooling or heating eect of each indoor unit will be poor.
• To ensure a successful startup, switch the main power on 8 hours before powering on the unit.
• After receiving the “O” signal, each indoor unit will continue to operate for 20 to 70 seconds to use the
remaining cool or warm air in the air exchanger while preparing for the next operation. This is normal.
• When the operating mode of the indoor unit is in conflict with that of the outside unit, a malfunction
light will blink for 5 seconds on the indoor unit display or on the controller to warn the user. Then the
indoor unit will stop. Change the operating mode of the indoor unit to match that of the outdoor unit
or with a compatible mode. COOL mode is compatible with DRY mode and FAN mode is compatible
with all operating modes.
• If the supply power fails when the unit is running, the indoor unit will send the “start” signal to the
outdoor unit three minutes after power recovery.
• This appliance is not intended for use by people (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they are under the supervision or
instruction concerning use of the appliance by a person responsible for their safety. Children should
be supervised to ensure that they do not play with the appliance.
• This product must not be disposed together with the domestic waste. This product has to be disposed
at an authorized place for recycling of electrical and electronic appliances.
PRECAUTIONS
WARNING
Operation and Maintenance
• This appliance can be used by people (including children of 8 years old and above) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, as long as they are under
the supervision or instruction concerning use of the appliance by a person responsible for their safety.
• Children shall not play with the appliance.
• Cleaning and user maintenance shall not be made by children.
• Do not connect to multi-purpose socket. Otherwise, it may cause re hazard.
• Disconnect power supply when cleaning. Otherwise, it may cause electric shock.
• If the power supply wire is damaged, it must be replaced by a qualied person in order to avoid
a hazard.
• Do not wash with water to avoid electric shock.
• Do not spray water on indoor unit. It may cause electric shock or malfunction.
• After removing the lter, do not touch ns to avoid injury.
• Do not use re or hair dryer to dry the lter to avoid deformation or re hazard.
• Do not operate this unit with wet hands.
• Maintenance must be performed by qualied person. Otherwise, it may cause personal injury
or damage.
5
• Do not repair the appliance by yourself. It may cause electric shock or damage. Please contact a
qualied person when you need to repair it.
• Do not extend ngers or objects into air inlet or air outlet. It may cause personal injury or damage.
• Do not block air outlet or air inlet. It may cause malfunction.
• When below phenomenon occurs, please turn o the appliance and disconnect power immediately,
and then contact a qualied person for service:
- There’s abnormal sound during operation.
- Circuit break trips o frequently.
- The appliance gives o burning smell.
- Indoor unit is leaking.
• Do not use or place any flammable, combustible or noxious substance next to the unit.
• If the appliance operates in an inappropriate environment or under abnormal conditions, it may cause
malfunction, electric shock or re hazard.
• Keep good ventilation in the room to avoid oxygen decit.
• Do not step on top panel of outdoor unit, or put on heavy objects. It may cause damage or personal
injury.
• When the unit is not to be used for a long time, please cut o the main power supply of the unit.
• Before turning the unit o, make sure it has run for a minimum of 5 minutes; otherwise its service life
will be shortened.
WARNING
Wiring
• Installation must be performed by a qualied person. Otherwise, it may cause personal injury or
damage.
• Must follow the electric safety regulations when installing the unit.
• According to the local safety regulations, use qualied power supply circuit and circuit breaker.
• Install a circuit breaker of adequate capacity only used for the system; otherwise, it may cause malfunction.
• An all-pole disconnection switch having a contact separation of at least 3 mm in all poles should be
connected in xed wiring.
• The appliance should be properly grounded. Incorrect grounding may cause electric shock.
• Make sure the power supply matches with the requirement of the appliance. Unstable power supply
or incorrect wiring may cause malfunction of the unit, electric shock or re hazard.
• Properly connect the live wire, neutral wire and grounding wire.
• Be sure to cut o the power supply before proceeding any work related to electricity and safety.
• Do not turn the power on before nishing installation.
• If the power supply or signal control wires are damaged, it must be replaced by a qualied person
in order to avoid problems.
• During installation, the communication cable and the power cord must not be twisted together but
instead separated with an interval of at least 2 cm, otherwise the unit is likely to run abnormally.
• The temperature of refrigerant circuit will be high, please keep the interconnection cable away from
the copper tube.
6
• The appliance shall be installed in accordance with national wiring regulations.
• Installation must be performed in accordance with the requirement of NEC and CEC by a qualied
person only.
• The heat pump is a rst class electric appliance. It must be properly grounded with specialized grounding device by a qualied person. Please make sure it is always properly grounded, otherwise it may
cause electric shock.
• The yellow-green wire in the appliance is the grounding wire, which can’t be used for other purposes.
• The grounding resistance should comply with national electric safety regulations.
• All wires of indoor unit and outdoor unit should be connected by a qualied person.
• If the length of power connection wire is insucient, please contact the dealer for a new one. Do not
extend the wire yourself.
• After the electrical installation, take an electric leakage test.
WARNING
Location
• If you need to relocate the appliance to another place, only a qualied person can perform the work.
Otherwise, it may cause personal injury or damage.
• Select a location which is out of reach for children and far away from animals or plants. If it is unavoidable, please add a fence around the outdoor unit for safety purpose.
• The location should be able to withstand the weight of the unit. Otherwise, the unit will fall and it may
cause injury or death.
• Instructions for installation and use of this product are provided by the manufacturer.
WORKING TEMPERATURE RANGE
Indoor side state Outdoor side state
Dry bulb temp.
°C (°F)
Wet bulb temp.
°C (°F)
Dry bulb temp.
°C (°F)
Wet bulb temp.
°C (°F)
Rated cooling 27 (80) 19 (67) 35 (95) 24 (75)
Max. cooling 27 (80) 19 (67) 46 (115) 24 (75)
Min. cooling 19 (67) 14 (57) 19 (67) 14 (57)
Rated heating 21 (70) 16 (60) 8 (47) 6 (43)
Max. heating 27 (80) – 24 (75) 18 (65)
Low ambient heating 21 (70) 16 (60) -15 (5) -16 (3)
7
PREPARATION BEFORE INSTALLATION
OUTLINE DIMENSIONS OF INDOOR UNIT
A
B
D
E
G
I
C
J
F
H
Backward
return air
Electric box Liquid pipe Gas pipe
Drain pipe
Downward return air
Models (in.) A B C D E F G H I J
SMD09KCHVSI 29 1/4 19 5/16 26 1/16 24 7/16 27 9/16 24 1/4 30 13/16 6 1/8 7 7/8 25
SMD12KCHVSI 29 1/4 19 5/16 26 1/16 24 7/16 27 9/16 24 1/4 30 13/16 6 1/8 7 7/8 25
SMD18KCHVSI 37 1/16 19 5/16 33 15/16 32 5/16 35 7/16 24 1/4 38 11/16 6 1/8 7 7/8 25
SMD24KCHVSI 45 19 5/16 41 13/16 40 3/16 43 5/16 24 1/4 46 9/16 6 1/8 7 7/8 25
Models (mm) A B C D E F G H I J
SMD09KCHVSI 742 491 662 620 700 615 782 156 200 635
SMD12KCHVSI 742 491 662 620 700 615 782 156 200 635
SMD18KCHVSI 942 491 862 820 900 615 982 156 200 635
SMD24KCHVSI 1142 491 1062 1020 1100 615 1182 156 200 635
REQUIRED INSTALLATION CLEARANCE DISTANCES DIAGRAM
˚
19 11/16"
500 mm
˚
9 7/8"
250 mm
Nut with
washer
Spring
pad
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