INSTALLATION, OPERATION & MAINTENANCE MANUAL VMH 09/12/18/24 SD Inverter Single Zone Ductless Mini-Split Heat Controller • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.
VMH 09/12/18/24 SD Inverter Mini-Split Heat Controller TABLE OF CONTENTS Safety Precautions Warnings and Cautions........................................................................................................ 3 Installation Instructions Installation Location Selection........................................................................................... 4-5 Accessories..........................................................................................................................
Heat Controller VMH 09/12/18/24 SD 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 instructions will cause harm or damage. n The seriousness is classified by the following indications.
VMH 09/12/18/24 SD Inverter Mini-Split Heat Controller Selecting installation place Choose a location that places the outdoor unit as close to the indoor unit as possible. The maximum unit separation and vertical lift (compressor above the evaporator) must be taking into account. Do not exceed allowable refrigerant line lengths. More than 6in.(15cm) Indoor unit • Unit must be installed in a location that does not obstruct the flow of air and ensures clearances are maintained. (Fig.
Heat Controller VMH 09/12/18/24 SD Inverter Mini-Split • Avoid areas where water, snow, or ice may fall from the roof onto the unit. • In climates where snow is a consideration, locate the unit away from areas prone to drifting. • Ensure the location of the unit will not be subject to snow drifts, heavy accumulation of snow or leaves or other seasonal debris. If unavailable, provide an awning for the unit. (Fig. 5 and Fig. 6) 1.
VMH 09/12/18/24 SD Inverter Mini-Split Heat Controller Accessories Number Name of Accessories Qty/unit 1 Wall Bracket 1 2 Plastic Dry Wall Anchor 5-8 depending on model 3 Self-tapping Screw A ST 3.9X25 5-8 depending on model 4 Seal (heat pump models only) 1 (Part 202720090001) 5 Drain Elbow (heat pump models only) 1 (Part 201101020011) 6 Remote Controller (with 2 AAA batteries) 1 7 Self-tapping Screw B ST2.
Heat Controller VMH 09/12/18/24 SD Inverter Mini-Split Wall Bracket should be flush with the interior wall Indoor unit installation 1. Wall Bracket Mounting A. There are two tabs on the back of the indoor unit that hold the wall bracket onto the unit. Press them down with a flat head screwdriver to release the wall bracket from the back of the unit. B. Mount the wall bracket flush on structural parts (studs) of the wall with proper unit clearances in consideration. (Fig. 1 and Fig.
VMH 09/12/18/24 SD Inverter Mini-Split Heat Controller 4. Refrigerant Line Installation A. Remove the knockout from the desired side of the unit that the line set will be routed from. The lines from the unit can be routed either left or right, left back or right back (Fig. 14). Clamp B. Remove the clamp (Fig. 14) before attempting to bend the line set to prevent kinks.
Heat Controller VMH 09/12/18/24 SD Inverter Mini-Split Outdoor Unit Installation • Install the outdoor unit on a rigid base such as a concrete slab, to prevent increasing noise level and vibration. • Use a raised concrete pad or concrete blocks to provide a solid, level surface. Securely anchor the unit down with bolts. • In a snowy area, slab should be higher than drifting snow. • See outdoor installation location information on page 4 for more details and acquired clearances.
VMH 09/12/18/24 SD Inverter Mini-Split Heat Controller Refrigerant Line Set Installation Refrigerant Line Set Installation • Use copper tubing suitable to withstand pressures for R-410A refrigerant. We recommend a min. wall thickness of 0.027in. (0.7mm). 11. The tube size should always be the same diameter as the connections provided at the service valves of the outdoor unit.
Heat Controller VMH 09/12/18/24 SD Inverter Mini-Split Leak Test, Evacuation & Release of Refrigerant WARNING It is illegal to discharge refrigerant into the atmosphere. Use proper reclaiming methods and equipment when working on the refrigerant containing parts of the unit. Service should be performed by a QUALIFIED service agency and certified technicians. The condensing unit is supplied with a R-410a factory approximately 25 ft. (7.6m) of line charge, sufficient for most matching evaporator units.
VMH 09/12/18/24 SD Inverter Mini-Split Heat Controller Unit Wiring The contractor is to provide an individual branch circuit for over current protection for the unit as required by code. Some codes may require a disconnect between the indoor and outdoor unit. Run power supply wiring through a weatherproof disconnect box and conduit to the unit connection. Disconnects are required to be within sight and easy reach of the unit (usually within 3 feet).
Heat Controller VMH 09/12/18/24 SD Inverter Mini-Split Electrical Work Indoor/Outdoor Communicating Cable Indoor Wiring 1. Wiring must conform to local and national electric codes 2. Lift the indoor unit’s panel up, remove the electrical box cover by loosening the screw as shown in (Fig.22). Fig. 22 Panel 3. Connect each conductor to the terminal of the indoor unit (L1, L2, S and Ground) based on the labels of each terminal (Fig. 23). 4. Use strain relief to secure the cable (Fig. 23). 5.
VMH 09/12/18/24 SD Inverter Mini-Split Heat Controller Electrical Work Outdoor unit power and communication cable wiring Outdoor Unit To power supply 1. Remove the electrical control cover from the outdoor unit (Fig. 24). Ov er 1 2. Connect power supply wires to the right side of the outdoor unit’s terminal strip. (Fig. 25) 3/4 in. (40 mm ) Conduit panel 3. Connect the green/yellow ground from the power supply wire to ground terminal. (Fig. 25) Connecting cable Power supply cord 4.
Heat Controller VMH 09/12/18/24 SD Inverter Mini-Split Initial Start-Up & Checks FIELD CHARGING Operation of the unit will depend on the setting of the thermostat on the unit or the remote control. Refer to the owner’s manual and remote control manual for operating instructions. Unit performance, efficiency, and life depends, to a large extent, on a proper system charge. Time spent on getting the charge right at start-up will payoff in the long run.
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