Global Industrial 246102 Horizontal Unit Heater

Quick guide from the manual

This manual provides essential instructions for the installation, operation, and maintenance of the Global Industrial 246102 Horizontal Unit Heater. This unit is designed for commercial/industrial use and must not be used as a residential or household heater. Installation must be performed by a certified electrician in accordance with local codes.

Product Description and Specifications

The 246102 is a 10KW, 240V horizontal unit heater capable of operating on either 1 or 3-phase power. It features a cold-rolled steel construction, built-in thermal cut-off protection, and options for either a built-in or external wall thermostat.

• Voltage: 240V
• Power: 10,000 Watts (10KW)
• Phase: 1 or 3 Phase
• Circuit Breaker: 60A
• Wire Size: 6 AWG copper
• Airflow: 600 CFM

Installation Instructions

Proper installation is critical for safety and performance. Ensure the following clearances are maintained:

• Height: Minimum 6 feet (1.8 m) from the floor.
• Side/Rear: Minimum 1 foot (0.3 m) from adjacent vertical surfaces or walls.
• Back Wall: Minimum 4.5 inches (11.5 cm) from the back wall.
• Front/Top: Keep combustible materials at least 3 feet (0.9 m) away.

Mounting Steps:

1. Mark hole locations on the wall or ceiling.
2. Drill two holes using a 0.48 inch (12mm) drill bit, 2.75 inches deep.
3. Insert expansion bolts (7) flush to the surface.
4. Attach the mounting bracket (8) and secure with expansion nuts (10).
5. Hook the unit onto the mounting bracket.
6. Secure the unit using the hex bolt (3), washers (4), spring washer (5), and nut (6).

Wiring Connections

Important: Disconnect the main power supply before starting any wiring work. Use 6 AWG copper wires.

Single Phase Connection

1. Open the wiring access window.
2. Connect the two supply cords to terminals L1 and L3.
3. Replace the cover and secure with the screw.

3 Phase Connection

1. Open the wiring access window.
2. Locate the internal red wires marked 'T' and 'W'.
3. Unplug the red wire 'W' and connect it to the Terminal W1/L2 position.
4. Unplug the red wire 'T' and connect it to the Terminal T1 position.
5. Connect the supply cords to L1, L2, and L3.
6. Replace the cover and secure with the screw.

Operating Instructions

The heater can be controlled via the built-in thermostat or an external wall thermostat.

• Selector Switch: Set to 'INSIDE THERMOSTAT' for the built-in control or 'WALL THERMOSTAT' for an external controller.
• Operation: Use the circuit breaker as the main power ON/OFF device. Use the switch on the back of the heater to turn the fan and heating function on or off.
• Temperature Adjustment: Turn the thermostat knob clockwise to increase the temperature or counterclockwise to decrease it.

Maintenance and Cleaning

The unit requires minimal maintenance. Before cleaning, disconnect the power supply and wait 60 minutes for the heating element to cool.

• Cleaning: Do not use liquid chemicals. Use a vacuum cleaner with a crevice tool to remove interior dust. Wipe the enclosure with a clean, soft, lightly damp cloth.
• Caution: Do not allow water to enter the interior of the heater.

Troubleshooting

If the heater fails to operate, check the following:

• Unit not heating: The thermal cut-off protection may have tripped. Turn off the power at the circuit breaker, wait 10 minutes for it to reset, and then turn it back on. Also, check if the circuit breaker has tripped.
• Burning smell: This is normal during the first use due to oil on the heating coil from manufacturing. Ensure the room is well-ventilated.