Heat exchanger/766020 diagram
Part #613863
Replaced by #36C03-333
Heat exchanger/766020 diagram
Part #600587
Heat exchanger/766020 diagram
Part #613209
Part #609227
Heat exchanger diagram
Part #1001184
Heat exchanger diagram
Part #600586
Furnace body diagram
Part #612254
Part #611872
Heat exchanger diagram
Part #612443
Part #613039
The manufacturer no longer makes this part, and there's no substitute part