The installation of this product must be completed by professional personnel. Operators must be familiar with the composition and working principle of photovoltaic power generation systems and relevant standards of the project location. Before installation, check the integrity of the equipment appearance and accessories. Damage caused by removing anti-tamper labels or non-standard installation is not covered by the warranty.

1. Preparation of Installation Tools

• 3# Hexagonal wrench: Disassembly and assembly of MPPT controller wiring compartment door panel (accessory included)
• Cross screwdriver (PH2): Fastening grounding and hanger (suitable for M6/M8 bolts)
• Tube terminal crimping pliers: Crimping communication wire terminals
• 19mm extended socket wrench: DC+/- output cable connection (suitable for M12 nuts)
• AMC4 terminal crimping pliers: Crimping MC4 input cable terminals
• Multimeter: Measuring voltage to ensure safe wiring installation
• PV terminal wrench: Disassembly and assembly of PV terminals (accessory included)
• Safety protective equipment: Insulated shoes, gloves and other construction labor protection supplies

2. Installation Methods

The product package is equipped with a hanger, supporting three installation methods: hoop pole-mounted, screw pole-mounted, screw hanger-mounted. Priority should be given to installation locations without direct sunlight, rain or snow accumulation; if not available, a sunshade can be built. For wall installation, M8 expansion screws must be prepared by yourself, selected according to wall load-bearing capacity.

• Hoop pole-mounted: Pass ≥2PCS hoops through the hoop installation holes on the back of the hanging plate and fasten tightly; hang the controller on the hanging plate from top to bottom and fasten both sides with 8PCS random screws.
• Screw pole-mounted: Fix the hanger with 3PCS M8x20 random screws; after hanging the controller on the plate, fasten both sides with 8PCS M8x20 random screws.
• Screw hanger-mounted: Fix the hanger with 4PCS M8x20 random screws; after hanging the controller on the plate, fasten both sides with 8PCS M8x20 random screws.

3. Electrical Connection Specifications

Before electrical connection, disconnect the DC circuit breaker on the inverter and battery side and the MPPT input main switch, and set up power-off warning signs; confirm that the open-circuit voltage of the photovoltaic string does not exceed the limit value, mark the positive and negative poles of the cable clearly, no-load operation is prohibited.

• Output side cable wiring: Connect the ground wire to the PE mark on the outside of the casing, the cable cross-sectional area ≥35mm², suitable for M8x20 combination screws; pass the DC output cable into the junction box from the bottom, remove the M12 nut with an extended sleeve, crimp the power terminal and lock it with a torque of 30N.M.
• PV input cable wiring: First strip the cable and crimp MC4 male and female terminals (distinguish positive and negative poles), then connect the positive and negative poles of the cable to the PV+/PV- terminals of the MPPT controller correspondingly.
• RS485 communication cable wiring: The bottom of the cabinet is equipped with a COM1 485 interface, supporting single/multi-unit networking, wiring according to the definition of 485_A (differential +), GND (signal ground), 485_B (differential -); pass the cable into the waterproof lock head, crimp the tube terminal and insert it into the corresponding port, multiple units are connected in series.

4. Cable Selection Requirements

5. System Application Scenarios and Core Advantages

With high adaptability and high reliability, Imax Wall-mounted Hybrid MPPT Controller can be widely used in various DC-coupled grid-tied & off-grid PV storage system scenarios. The core application scenarios and corresponding advantages are as follows:

Figure 2: Imax Wall-mounted Hybrid MPPT Controller Typical Application Scenarios

• Commercial and industrial distributed PV storage scenarios: Adapts to the photovoltaic installation needs of large commercial and industrial plants and parks, multi-channel MPPT design can match the layout of PV panels in different orientations, 99.4% high conversion efficiency maximizes photovoltaic power generation benefits; IP66 protection grade can adapt to outdoor/semi-outdoor installation environments of plants, significantly reducing system operation and maintenance costs.
• Island/coastal high-salt mist area PV storage scenarios: C5 anti-corrosion grade + IP66 protection perfectly adapts to the harsh environment of high salt mist and high humidity by the sea, solving the pain points of easy corrosion and high failure rate of traditional equipment; wide voltage input range can adapt to complex lighting conditions on islands, ensuring stable operation of energy storage systems.
• PV storage scenarios in remote off-grid areas: No need to configure photovoltaic inverters and AC/DC combiner boxes, greatly reducing the initial investment cost of off-grid PV storage systems; -30~55°C wide operating temperature range can adapt to extreme climate areas such as plateaus and deserts, achieving stable power supply with “no power interruption during outage”.
• Residential PV storage integrated scenarios: Compact structure, small size, supports multiple installation methods, adapting to the limited installation space of household roof photovoltaics; intelligent heat dissipation + low noise design does not affect residents’ daily life; multiple safety protection functions ensure household electricity safety.
• PV charging station PV storage scenarios: Fast response characteristics of anti-backflow and power limitation can accurately control photovoltaic power output, adapting to the grid connection specifications of charging stations; large installed capacity support can meet the high-power energy storage needs of charging stations, reducing the peak-valley electricity price difference cost of charging stations.