Gas Dryer BTU input
The Lady Kenmore Combination Washer-Dryer had a 37,000 BTU modulating burner as did the early Kenmore "Match All" Soft Heat Dryer with the perforated drum back which was a less efficient design than the solid bulkhead in use in WP, Maytag and other dryers today. The control system for the combination used a slightly higher drying temperature than the control for the perforated drum back since the air flow was less direct and because the combo was drying stuff that was spun at 400 rpm. I have one of the match all gas dryers in coppertone and a very ordinary looking black control panel KitchenAid gas dryer that matches my washer and electric dryer that are kept inside, except it has one of the 37,000 BTU modulating burners. Within 8 to 10 minutes of starting, its vent pumps out clouds of visible water vapor unless it is a very hot day. Between these two, I have a WP dryer with the round window in the door. It has a cycling 37,000 burner. The burner cycles for the first time within 10 minutes of starting a full load on the high heat setting. In still damp weather, 2 or 3 of the dryers can fill the area under the deck with enough vapor to block vision from one end to the other. The modulating burners make drying faster because once the operating temperature of around 160F is reached, the gas valve begins slowly reducing the input to hold the temperature steady unlike a cycling burner which cycles off at the desired temperature then has to cool anywhere from 10 to 20 degrees before firing again.
The Lady Kenmore Combination Washer-Dryer had a 37,000 BTU modulating burner as did the early Kenmore "Match All" Soft Heat Dryer with the perforated drum back which was a less efficient design than the solid bulkhead in use in WP, Maytag and other dryers today. The control system for the combination used a slightly higher drying temperature than the control for the perforated drum back since the air flow was less direct and because the combo was drying stuff that was spun at 400 rpm. I have one of the match all gas dryers in coppertone and a very ordinary looking black control panel KitchenAid gas dryer that matches my washer and electric dryer that are kept inside, except it has one of the 37,000 BTU modulating burners. Within 8 to 10 minutes of starting, its vent pumps out clouds of visible water vapor unless it is a very hot day. Between these two, I have a WP dryer with the round window in the door. It has a cycling 37,000 burner. The burner cycles for the first time within 10 minutes of starting a full load on the high heat setting. In still damp weather, 2 or 3 of the dryers can fill the area under the deck with enough vapor to block vision from one end to the other. The modulating burners make drying faster because once the operating temperature of around 160F is reached, the gas valve begins slowly reducing the input to hold the temperature steady unlike a cycling burner which cycles off at the desired temperature then has to cool anywhere from 10 to 20 degrees before firing again.
