INSTALLATION MANUAL VMH 09/12/18/24 Version C Inverter Single Zone Ductless Mini-Split Heat Pump Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.
VMH Inverter Mini-Split INSTALLATION MANUAL Heat Controller, Inc. Table of Contents Safety Precautions Warnings and Cautions............................................................................2 Installation Instructions Selecting an installation location...............................................................3 Accessories..............................................................................................4 System installation........................................................
Heat Controller, Inc. INSTALLATION MANUAL VMH Inverter Mini-Split • Read the follow SAFETY PRECAUTIONS carefully before installation. • Electrical work must be performed by a licensed electrician. Be sure to use the correct rating of the power cord and main circuit for the model to be installed. • Incorrect installation due to ignoring the instruction will cause harm or damage. n The seriousness is classified by the following indications.
VMH Inverter Mini-Split INSTALLATION MANUAL Heat Controller, Inc. Selecting installation place Read completely, then follow step by step. Indoor unit • Do not expose the indoor unit to heat or steam. • Select a place where there are no obstacles in front or around the unit. • Make sure that condensation drainage can be conveniently routed away. • Do not install near a doorway. • Ensure that the space on the left and right of the unit is more than 5in.(12cm).
INSTALLATION INSTRUCTIONS Heat Controller, Inc. INSTALLATION MANUAL VMH Inverter Mini-Split Accessories Number Q ty Qty/unit Name of Accessories 1 Installation Plate 2 Plastic Expansion Sheath INSTALLATION INSTRUCTIONS 1 8 3 Accessories 8 1 1 4 ty 1 1 8 Parts you must purchase (A minimum 8 pipe wall-thickness 1 0.7mm is required.
VMH Inverter Mini-Split • • Heat Controller, Inc. INSTALLATION MANUAL CAUTION Use a stud finder to locate studs to prevent unnecessary damage to the wall. A minimum pipe run of 10 ft. (3m) is required to minimize vibration & excessive noise. Indoor unit installation (wall-mounted type) 1. Installation Plate A. Mount the installation plate horizontally on structural parts (studs) of the wall with proper clearance around the installation plate. B.
Heat Controller, Inc. VMH Inverter Mini-Split INSTALLATION MANUAL 4. Indoor unit installation A. Pass the piping through the hole in the wall. B. Put the upper claw at the back of the indoor unit on the upper hook of the installation plate, move the indoor unit from side to side to see that it is securely fastened (see Fig.11 & Fig.12). INSTALLATION INSTRUCTIONS C. Separate the bottom of the indoor unit from the 2. When connecting extension drain hose, wall by inserting a spacer.
VMH Inverter Mini-Split Heat Controller, Inc. INSTALLATION MANUAL Outdoor Unit Installation Outdoor installation precaution • Install the outdoor unit on a rigid base to prevent increasing noise level and vibration. • Determine the air outlet direction where the discharged air is not blocked. If the installation place is exposed to strong winds, ensure the unit is lengthwise along the wall or provide a suitable air baffle. • If suspending the unit, follow the bracket manufacturer’s instructions. Fig.
draining off the outdoor unit during the heating mode. Heat Controller, Inc. Seal Drain pipe VMH Inverter Mini-Split INSTALLATION MANUAL Fig.46 Refrigerant pipe connection Refrigerant Pipe Connection 1. Flaring work Main cause for refrigerant leakage is due to defect in the flaring work. Carry out correct flaring work using the following procedure: A: Cut the pipes and the cable. linepiping set kitkit oraccessory copper tubes/pipes 1. Use the or pipes purchased locally. locally. purchased 2.
VMH Inverter Mini-Split INSTALLATION MANUAL Heat Controller, Inc. Refrigerant Pipe Connection Tightening Connection • Align the center of the pipes. • Sufficiently tighten the flare nut with fingers, and then tighten it with a spanner and torque wrench as shown in Fig. 20 & 21. Outer Diameter o 1/4" (6.35) o 3/8" (9.35) o 1/2" (12.7) o 5/8" (15.87) Tightening torque 11.57 ft-lb (160 kgf-cm) 21.69 ft-lb (300 kgf-cm) 36.17 ft-lb (500 kgf-cm) 54.28 ft-lb (750 kgf-cm) Additional tightening torque 14.
Heat Controller, Inc. INSTALLATION MANUAL VMH Inverter Mini-Split Electrical Work Electric safety regulations for the initial Installation 1. Power voltage should be in the range of 90%~110%of rated voltage. 2. The creepage protector and main power switch with a 1.5 times capacity of Max. Current of the unit should be installed in power circuit. 3. Ensure the air conditioner is grounded well. 4. Connect wiring to the unit according to the electrical diagram located on the panel of the outdoor unit. 5.
VMH Inverter Mini-Split Heat Controller, Inc. INSTALLATION MANUAL Electrical Work ELECTRICAL WORK Power supply 208-230V~60Hz Minimum norminal cross-sectional area of conductors: Input Rated Amp (Switch/Fuse) Rated current Nominal cross-sectional area of appliance (A) (ft2)/(mm 2) 8.1/0.75 >3 and <6 10.8/1 >6 and <10 >10 and <16 16.21.5 27/2.5 >16 and <25 32A/25A (<12000Btu/h) 40A/30A (>12000Btu/h) NOTE: The supply voltage must be consistent with the rate voltage of the air conditioner.
will not touch any electrical components. Secure the cable onto the control board with the cord clamp. Heat Controller, Inc. To outdoor unit To outdoor unit VMH Inverter Mini-Split Fig.22 INSTALLATION MANUAL Electrical Work Connect the cable to the outdoor unit Connect to thefrom outdoor unit thecable cover control the unit by 1. Removethe loosening 3 screws. 1. Remove thethe cover control See from Fig.23. the unit by loosening the (3) Seecaps Fig. on 24.the conduit panel. 2.screws. Dismount 3.
VMH Inverter Mini-Split INSTALLATION MANUAL Heat Controller, Inc. Air Purging Air and moisture in the refrigerant system have undesirable effects as indicated below: • Pressure in the system rises. • Operating current rises. • Cooling or heating efficiency drops. • Moisture in the refrigerant circuit may freeze and block capillary tubing. • Water may lead to corrosion of parts in the refrigeration system.
Heat Controller, Inc. VMH Inverter Mini-Split INSTALLATION MANUAL Air Purging • When relocating the unit to another place, perform evacuation using vacuum pump. • Make sure the refrigerant added into the air conditioner is liquid form. Caution in handling the packed valve • Open the valve stem until it hits against the stop. Do not try to open it further. Fig. 26 • Securely tighten the valve stem cap with a spanner or the like. • Valve stem cap tightening torque (see tightening torque table).
VMH Inverter Mini-Split Heat Controller, Inc. INSTALLATION MANUAL TEST RUNNING Safety and and leak leakage check Safety check Electrical safety check Perform the electric safe check after completing installation: 1. Insulated resistance The insulated resistance must be more than 2M . 2. Grounding work After finishing grounding work, measure the grounding resistance by visual detection and grounding resistance tester. Make sure the grounding resistance is less than 4 . 3.
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