Heat Controller SMH 24 User manual

Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • [phone] • www.heatcontroller.com
INSTALLATION
INSTRUCTIONS
SMA/SMH 18/24
Version C
Single Zone Ductless Mini-Split System
A/C and Heat Pump

SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc.
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Installation Manual for Single Zone Ductless Mini-Split
• For correct installation, read this manual before starting the installation. Please save this manual in a safe
place.
• Only trained and qualied service personnel should install, repair or service air conditioning equipment. Users
should not install the air conditioner by themselves.
• Pictures in this manual may be slightly different from the air conditioner you purchased. These pictures are
only representations.
INSTALLATION PRECAUTION
Installation in the following places is not recommended.
• Near equipment which contains or uses oil.
• Coastal locations where exposure to high winds and high concentrations of salt in the air may damage the
air conditioner.
• A location with exposure to sulde gas such as hot-spring resort.
• Places where there are high frequency machines such as wireless equipment, welding machines, or in a
medical facility. The unit uses a remote controller and may cause electrical interference with nearby wire-
less equipment.
• A location with abnormal environmental conditions such as locations where the unit is exposed to exces-
sively high or low ambient temperatures, exposure to adverse weather, corrosive fumes, dust laden or
moisture-laden atmospheres and hazardous locations.
• A location where there are combustible gases or volatile matter.
Recommended Areas of Installation
Indoor Unit
• A place where there are no obstacles or blockages, near the inlet or outlet airow areas of the unit.
• A place which can bear the weight of the indoor unit.
• A place which provides adequate clearance around the indoor unit as required.
• A place 3.3ft or more away from TV or radio equipment to ensure there is no electronic/wireless interference.
• A place which is far away from heat or steam sources and ammable gas.
• Install the indoor unit on the wall where the height from the oor is more than 7.5 feet.
Outdoor Unit
• A place which is convenient for installation and not exposed to a high winds or air with high concentra-
tions of salt content.
• A place which can bear the weight of the outdoor unit.
• A place where the outdoor unit can be installed in a horizontal level position.
• A place where the operation noise and discharge air will not disturb others.
• A place free from leakage of combustible gases.
• Where an allowable head level for the connective piping is less than 16 feet and length of the connective
piping is less than 33 feet.
• A place which provides recommended clearance around the outdoor unit.
Note:
1. The appliance should not be installed in the laundry room.
2. All the connections must be in accordance with local and national electric codes.
3. For power details of the air conditioner, refer to the rating plate of the product.

Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24
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Part No. Name of Part Quantity
1Installation Plate 1
2Anchor 8
3 Mounting Screw A (ST3.9x25-C-H) 8
4 Remote Controller 1
5Remote Controller Holder 1
6 Mounting Screw B (ST2.9x10-C-H) 2
7 Refrigerant Pipe
Liquid side o 1/4" (<24,000 Btu/h)
o 3/8" (≥24,000Btu/h)
Gas Side o 1/2" (<24,000 Btu/h)
o 5/8" (≥24,000 Btu/h)
8 Seal* 1
9 Drain Elbow* 1
Installation Parts
* See outdoor installation instructions
Remove the water receiver rst
before connecting the piipes
NOTICE: There should be at least two of the air ow inlets/
oulets labeled “A”, “B”, “C” above free from blockage.
Anchoring the Outdoor Unit
• The outdoor unit should not be exposed
to strong winds
• Anchor the outdoor unit with o5/16"
anchor bolts
8Seal
9Drain
Elbow
**Cautions on remote
controller installation
• Keep the remote controller at
least 3 feet from the nearest
TV set or stereo equipment
to advoid possible electronic
interference.
• Do not leave the remote
controller in a place exposed
to direct sunlight or close to
a heating source, such as a
stove.
• Ensure that the positive and
negative poles are correct
when inserting batteries into
the remote controller.
Please install the accessories attached with unit correctly according to this installation manual.
U Bend example

SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc.
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INDOOR UNIT INSTALLATION
1. Mounting Installation Plate and creating a Wall opening
Installation Plate and its measurements (inches):
5 inches or more 5 inches or more
2. Creating a wall opening
1. Attach the installation plate
A.
B.
C.
A.
B.
Clearance:
Clearance: Clearance:
Clearance:
Clearance: Clearance:

Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24
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2. Line Set and Condensate Drain Line
B. When extending the drain hose, insulate
appropriately.
1. Condenstate Drain 2. Line Set
• Connect the indoor unit rst, then the outdoor
unit. Bend and arrange the piping carefully.
• Do not allow the piping to loosen from the
indoor unit during installation.
• Be sure not to let the drain hose slack.
• Insulate both pipes.
• Do not allow the power cable and control cable
to be crossed.
A. Run the drain hose sloping downward. DO
NOT install the drain hose as illustrated below.
B.
A.
C.
Left rear piping
Right rear piping
left-rear-hand piping,

SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc.
3. Indoor Unit Installation
secured to
lip at the back
Place the upper lip at the back
of the indoor unit onto the up-
per hook of the installation plate.
Move the indoor unit from side to
side to see that is is secured onto
the hook of the installation plate.
Push the lower part of the indoor
unit up to the wall. Then move
the indoor unit from side to side
and up and down to ensure it is
secured to the installation plate.
B.
D. Piping can easily be installed by
placing a piece of foam between
the unit and the wall to assist in
holding the unit away from the
wall during installation.
C.
A.
4. Electrical Work
E. All wiring to the unit and interconnecting between indoor and out-
door units must comply with local and national electrical codes.
F. Do not exceed the power code by splicing.
G. Voltage should be in range of 90%~110% of unit’s voltage.
H. The indoor unit is powered through the interconnecting cable. The
indoor unit requires no separate power source.
• Connect unit to a dedicated circuit.
• Refer to the unit’s rating plate from proper supply voltage.
A.
B.
C.
D.

Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24
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5. Connecting Cables
C. Wrap cables not connected to terminals with electrical tape so that
they will not touch any electrical components.
B.
A. Lift the panel, loosen the screw, then open the Electric Box Cover.

SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc.
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6. Piping and Wrapping
A. For the left-hand and right-hand piping, remove the rear
plate bushing from the left side of the rear plate.
B. Wind the line set, drain hose and wiring with tape se-
curely and evenly. Consult local and national electrical
codes for proper routing and placement of electrical
wiring.
C. When installing the indoor unit lower than the outdoor
unit, make a “u-bend” trap to prevent rain water from
running along the connecting pipe to the inside of the
building/room where the indoor unit is located.
wrap
line set.
Before wrapping electrical wiring with line set, consult local and
national codes for proper installation of line voltage wiring.

Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24
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OUTDOOR UNIT INSTALLATION
1. Outdoor Installation Precaution
• Install the outdoor unit on a rigid base to prevent noise and vibration.
• Locate the air outlet direction where the discharged air is not blocked.
Ensure there are no obstacles blocking the unit’s air ow.
• If the installation location is exposed to strong winds, place the unit length
wise along a wall or use shield plates to protect against high winds.
• If suspending the unit, the installation wall should be solid brick, concrete or of similar construction. If
not, reinforce the supporting wall. The connections between the bracket and wall and the bracket and
the air conditioner must be rm, stable and reliable. Consult all local and national building codes.
• If suspending the unit, follow the instructions provided by the bracket manufacturer.
2. Drain Elbow Installation
Fit the seal into the drain elbow,
then insert the drain elbow into the
outdoor unit’s base pan hole, rotate
90° to securely assemble them. To
discharge excessive condensate
from the outdoor unit when in heating
mode, connect the drain elbow to a
drain hose (locally purchased).
89

SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc.
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3. Refrigerant Piping Connection
1. Flaring 2. Tightening Connection
.04
A.
B.
A.
B.
Excessive torque can break the are nut. Ensure
the proper torque is adhered to in the chart below.
Hand tighten the are nut and then tighten it
with a spanner and torque wrench as shown.

Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24
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4. Wiring Connection
A.
Use a dedicated circuit. Use HACR break sized per
unit’s rating plate. Size wires according to minimum
circuit ampacity shown on the unit’s rating plate.
• Be sure to comply with local and national electri-
cal codes while running the wire from the indoor
unit to the outdoor unit.
• Install disconnects fro the outdoor and indoor
units as required by national and local electrical
codes.
• Every wire must be connected rmly. Loose wir-
ing may cause the terminal to overheat or result
in unit malfunction. A re hazard may also exsist.
NOTE: To prevent wire from loosening, secure
wires and/or cords under cord clamp.
B.
C.
D.
E.
F.

SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc.
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AIR PURGE AND TEST OPERATION
1. Air Purge
where L=Length
• Open the valve stem until it hits against the stop.
Do not try to open it further.
• Securely tighten the valve stem cap with a
spanner or wrench.
• Torque the valve properly:
Gas pipe side (0.38"): 23.5 N-cm (300 kgf-cm)
Liquid pipe side (0.25"): 12.56 N-cm (160 kgf-cm)
-
Hi Handle
Lo Handle
-29.92 inHg.
is entering.
Connect the charge hose to the vacuum
pump.
Completely tighten the are nuts A, B, C, D.
Connect the manifold valve charge hose to the
charge port of the packed valve on the gas pipe
side.
A.
B.
C.
D.
E.
F.
G.
H.

Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24
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2. Gas Leak Check 3. Test Operation
soapy water.
Make sure connections do not leak
with leak detector or soapy water.
A. Lo packed valve
B. Hi packed valve
C. End of indoor unit connection
D. End of indoor unit connection
Test the unit’s operation after completing gas leak
check at all are nut connections and complete
an electrical safety check.
A.
B.
C.
D.
E.
controlled by the remote controller to run in
cooling mode. Manual operation must be used
when the remote controller is disabled or when
maintenance is necessary.
The test operation should last about 30 minutes.F.

04/2009
08/2010