MODINE Unit Heater HDS125AS0111SBAN

Turn off gas at the manual shut-off valve ahead of the combination gas control.

Turn off all electric power to the heater.

Check fan for fit on motor shaft.

Verify use of factory-approved service replacement parts only.

Were any mechanical or electrical controllers wet?

Ensure gas is turned off at the manual shut-off valve ahead of the combination gas control.

Turn off all electric power to the heater.

Verify the following information from the rating plate on the appliance

Are all replacement parts factory-approved?

List any non-approved parts or controls used, if applicable.

Use only factory-approved service replacement parts

Ensure the following precautions are taken

Turn off gas at the manual shut-off valve ahead of the combination gas control

Turn off all electric power to the heater

Keep unit free from dust, dirt, grease, and foreign matter, paying particular attention to

Remove the access panel, open the union on the gas line, and disconnect the igniter and sensor wires

Turn off gas at the manual shut-off valve ahead of the combination gas control.

Turn off all electric power to the heater.

Check gas valves and piping for general cleanliness and tightness.

Inspect gas controls to ensure proper operation of the unit.

Verify replacement of any defective controllers

Were factory-approved service replacement parts used?

Acknowledge understanding of using only factory-approved service replacement parts

Acknowledge understanding of the risk of substituting parts or controls not approved by the factory

Ensure the following precautions are taken

Are you trained and familiar with the operation of unit heaters and their controls?

Turn off gas at the manual shut-off valve ahead of the combination gas control

Turn off all electric power to the heater