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INSTALLATION
INSTRUCTIONS
SMA/SMH 18/24
Version C
Single Zone Ductless Mini-Split System
A/C and Heat Pump
Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com
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Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24 Installation Parts Please install the accessories attached with unit correctly according to this installation manual. **Cautions on remote Part No. Name of Part Quantity controller installation 1 Installation Plate 1 • Keep the remote controller at least 3 feet from the nearest 2 Anchor 8 TV set or stereo equipment 3 Mounting Screw A (ST3.9x25-C-H) 8 to advoid possible electronic interference. 4 Remote Controller 1 • Do not leav
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SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc. INDOOR UNIT INSTALLATION 1. Mounting Installation Plate and creating a Wall opening Installation Plate and its measurements (inches): Clearance: Clearance: Clearance: 5 inches or more 5 inches or more Clearance: Clearance: Clearance: 2. Creating a wall opening 1. Attach the installation plate A. A. B. B. C. 3
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Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24 2. Line Set and Condensate Drain Line 1. Condenstate Drain 2. Line Set A. Run the drain hose sloping downward. DO NOT install the drain hose as illustrated below. Left rear piping Right rear piping A. B. When extending the drain hose, insulate appropriately. B. left-rear-hand piping, C. • Connect the indoor unit first, then the outdoor unit. Bend and arrange the piping carefully. • Do not allow the piping to loosen from the indoor
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Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24 5. Connecting Cables A. Lift the panel, loosen the screw, then open the Electric Box Cover. B. C. Wrap cables not connected to terminals with electrical tape so that they will not touch any electrical components. 6
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SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc. 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 al
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Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24 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 flow. • 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 suspendin
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SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc. 3. Refrigerant Piping Connection 1. Flaring 2. Tightening Connection A. A. B. Hand tighten the flare nut and then tighten it with a spanner and torque wrench as shown. B. Excessive torque can break the flare nut. Ensure the proper torque is adhered to in the chart below. .04 9
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Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24 4. Wiring Connection A. B. C. D. E. F. 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. • Eve
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SMA/SMH 18/24 INSTALLATION INSTRUCTIONS Heat Controller, Inc. AIR PURGE AND TEST OPERATION 1. Air Purge A. Completely tighten the flare nuts A, B, C, D. Connect the manifold valve charge hose to the charge port of the packed valve on the gas pipe side. B. Connect the charge hose to the vacuum pump. C. D. where L=Length is entering. E. • Open the valve stem until it hits against the stop. -29.92 inHg. Do not try to open it further. F. • Securely tighten the valve stem cap with a spanner or
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Heat Controller, Inc. INSTALLATION INSTRUCTIONS SMA/SMH 18/24 2. Gas Leak Check 3. Test Operation Make sure connections do not leak Test the unit’s operation after completing gas leak with leak detector or soapy water. check at all flare nut connections and complete soapy water. 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 A. Lo packed valve maintenance is
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