THIS PROCEDURE MUST BE PERFORMED BY A QUALIFIED TECHNICIAN.
WARNING
HAZARDOUS VOLTAGE: Risk of electric shock. Can cause injury or death. System may be connected to more than one branch circuit. Disconnect power to all circuits before servicing. Equipment must be installed and serviced by a qualified technician..
HIGH TEMPERATURES: Risk of fire. Can cause injury or death. Internal core temperatures can reach 1200°F. Ensure core is NOT hot before removing galvanized front panel.
De-energize System
De-energize the system and remove the front painted panel.
Remove Sensor
Remove the brick core sensor.
Disconnect Harnesses
Disconnect element wiring harnesses from elements. Carefully set the core sensor and the harnesses to the side to prevent damage.
NOTE: Inspect element lead wires. If damaged or show signs of overheating, these terminals MUST be replaced with a high temperature connector (Order item #1040470).
Remove Galvanized Panel
Remove the galvanized front panel and set it aside.
Lift Blanket Insulation
Starting at the bottom, carefully lift each of the insulation blankets and drape them over the top of the system, using a barrier between layers of insulation will help prevent damage.
NOTE: Use face mask, gloves, and long-sleeved garments when handling insulation materials in compliance with generally accepted safety practices.
Remove Air Channel
Remove front air channel. Cover blower opening to avoid debris falling into core blowers.
Remove Elements
Remove defective elements. When elements fail, there can be loose debris that should be removed.
Insert New Elements
Insert new elements between brick layers, sliding them in until element ends embed into side cut outs of the brick cavity.
Install Front Air Channel
Re-install the front air channel with flanges on top and sides facing inward.
Position Blanket Insulation
Lower insulation blankets back in position, one at a time. Carefully tuck bottom edge in first, then sides of insulation into edges, corners, and around exposed portions of heating elements to ensure maximum efficiency.
Install Galvanized Cover
Re-install the galvanized front panel.
Install Brick Core Sensor
Re-install the brick core temperature sensor making sure to secure in place so it does not short against the painted front panel.
Connect Element Terminals
Reconnect element wiring harnesses. Element screws should be tight.
NOTE: Properly torque and verify connections are secure. Loose connections will fail.
Required clearance between element termination and metal panels is 1/2" (3/4” nominal).
Complete Check-Out
Re-install the painted front panel and complete the Installer’s Final Check-Out Procedure found in the Owner’s and Installer’s Manual to ensure proper operation.