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GNA-2538 R0
4.4. Electrical Connection
• Do not bypass or remove the heater/fan motor interlock that prevents the heater from
starting if the fan is not running. Doing so could result in a fire and injury.
• Make certain the heater is wired/interlocked to the fan motor controls.
• Never plug the heater into a separate power source than the fan.
• Make absolutely certain the heater is connected to the fan motor control box so the fan
interlock will operate.
Installation Notes
• The heater control box requires 3-wire single phase power - 120V “hot” L1, 0V neutral L2, and ground.
• The heater power source must be electrically interlocked to the fan to ensure operation only when the fan is
running.
• AGI recommends that all fan/heaters are connected to a ground rod. Check previously installed units for
proper grounding.
• The customer is responsible for supplying the materials and labor to install:
–
A properly-sized lockout type disconnect box with fuse or breaker protection for EACH fan and add-on
heater.
–
Properly-sized service line.
–
Proper grounding protection.
–
Wire the heater into the fan control box so the interlock will prevent the heater from operating without
the fan ON.
Important
When installing new wires, replace wires with the original wire type supplied with this fan/heater.
Always replace wires with original type and/or an equivalent wire type.
Note
For wiring specifics , see
Section 8.3 – Electrical Schematics on page 46
AXIAL FAN HEATER – LP AND NG-FIRED HEATER
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