Coleman model DGAA-090 - http://www.hvacmechanic.com/ Forums
Original message
| phil schelin | "Coleman model DGAA-090" , posted Thu 26 Oct 12:00  
Heat Exchanger failures while under warranty . Model DGat-070 has beeen under a recall however, in our manufactured home community there is a growing number of Coleman model DGAA-090 heat exchanger cracks reported. In addition, the replacement units must be under a backorder condition as we wait 19 days for a new unit . Style Crest technicians ask for these tests to be performed. "Can you provide me with operational data on the units you have witnessed the cracks". We would like to know: the supply static pressure; the ATR (air temperature rise); the manifold gas pressure; the firing rate. I'm looking for data on the number of similar failures in your areas.
Phil Schelin frankfort il 60423
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