HEATER CASE ASSEMBLY REPAIR PROCEDURES INDEX
Disassemble/Assemble Heater Case Assembly
General Repair Heater Case Assembly
Remove/Install Shields and Shield Insulator
Repair Painted Surfaces
D I S A S S E M B L E / A S S E M B L E H E A T E R C A S E A S S E M B LY
TOOLS: Tool kit, service, refrigeration unit
Control box assembly removed.
Printed circuit (PC) board assembly removed.
Fuel lines and fittings removed.
Fuel filter removed.
Combustion blower removed.
Ventilating air motor removed.
Safety thermostats and thermocouple removed.
Burner head assembly removed.
Ignition transformer and cable removed.
Heat exchanger removed.
1. Force grommet (1) out of hole in exchanger housing panel. If grommet is cracked, worn, or
2. Remove one screw (2) and two lock washers (3) and lift off ground strap (4). If ground strap
is torn, badly corroded, or has loose terminal, replace.
3. Remove three screws (5) and lock washers (6) at front of heater and lift off front mounting
4. Remove four screws (8) and lock washers (9) at rear of heater and lift off rear mounting