Instruction Manual

ANTI-CONDENSATE DOOR OPENING HEATER

To prevent condensate from forming around the outer edges of the door opening, an anti-condensate heater

has been installed around the perimeter of the door opening. This constant-energy, low wattage, electric heater

wire elevates the temperature of the door jambs and threshold sufficiently to maintain these surfaces above the

dewpoint temperature of the surrounding air preventing condensation.

Failure of the heater wire is usually suspected when condensation forms around the perimeter of the door opening.

Moisture accumulates to a point where it causes a problem on the building floor, or when the condensate freezes

around the door opening, as will be the case when a walk-in freezer is involved. There is no cause for alarm,

however, if occasionally a few drops of moisture form during a period of EXCEPTIONALLY HIGH HUMIDITY.

NOTE: The heater wire is designed to provide the proper amount of heat to the surfaces around the door opening

WHILE THE WALK-IN IS AT DESIGN TEMPERATURE! Premature failure will result if the heater wire is energized

over an extended period of time while no refrigeration is occurring within the walk-in cooler or freezer.

HEATER WIRE REPLACEMENT

Three pieces of trim and the threshold must be removed to gain access to the

heater wire. The trim serves as the cover of the heater raceway at the side jambs

and the head jamb. The threshold covers the heater channel in the bottom plate

of the door section.

THRESHOLD REMOVAL

WARNING! Make sure that the electric power to the walk-in is disconnected

before attempting to replace door heater.

To remove the threshold, remove all

visible screws that attach the threshold

to the walk-in floor or to the building

floor. Three screws attach the threshold

to the bottom plate of the door section.

When all screws are removed, pry the

threshold up until it is free and remove it

from the floor section.

STAINLESS STEEL TRIM REMOVAL

Use a screwdriver to remove four screws on each of the three trim pieces.

Remove each trim piece in turn. This will expose the heater wire and hardboard

spacer strip.

Walk-in mainTenance