Reznor® series 100, model F gas-fired, gravity-vented unit heaters are designed for 80% thermal efficiency and are designed for use with natural or propane gas, as specified, in sizes from 25,000 to 400,000 BTUH gas input. Model F unit heaters are designed for ceiling suspension with a propeller fan for air delivery. I have a Reznor F100 E3 unit that has power to the unit, but will not respond when I turn the thermostat up, where - Answered by a verified HVAC Technician On page 26 of this manual on the F100 heater, it shows different terminals than what you've given me. But it could be that this was Reznorparts.com is the fastest and easiest way to find Reznor replacement parts. If you know the OEM part youi??re looking for, simply type in the part number and you will see pricing and inventory quantity, if not, use our Reznor parts search engine to quickly & easily find the part you are looking for. R.G. Davis & Co. is the largest Reznor parts distributor in the United States and this Parts4heating is now a master parts distributor for Reznor. We carry the full line of Reznor heater parts. Reznor, a subsidiary of Thomas & Betts Corporation is based in Reznor Pennsylvania, USA. Parts4heating is stocking thousands of Reznor parts and have built a database that enables you to find the part you need, when you need it. The UDAP45 unit heater was created to improve upon Reznor's proven technology. It features a new design both in and out, easier installation, and better fuel efficiency. Offering an impressive 83% thermal efficiency, Reznor's UDAP unit heaters produce high-quality heat performance and are available in 12 sizes to heat spaces both large and small. Reznor Unit Heater Model FE100 Parts - Shop online or call 800-269-2609. Fast shipping. Open 7 days a week. 365 day return policy. Save reznor heaters manual to get e-mail alerts and updates on your eBay Feed. + Items in search results. Reznor F-100 Gas Fired Unit Heater - Gravity Vented - NG - Aluminized Heat Ex Free Shipping | Free Lift Gate Service. Brand New. $1,256.05. Reznor hanging heater thermocouple replacement. Troubleshoot Gas Heater will not stay lit - Clean the Flame Sensor with steel wool - Duration: 6:18. RokuChannelMaker.com 112,798 views Reznor Heater Troubleshooting. Customer Question. I have an older Reznor unit heater, 140k BTU/hr, in my garage fueled by propane. Manual J & D calculations. Brian HVAC Guy. HVAC Technician. 1,029 satisfied customers. I have been an HVAC/R mechanic/technician for 30+ years. Reznor® series 100, model F gas-fired, gravity-vented unit heaters are designed for 80% thermal efficiency and are designed for use with natural or propane gas, as specified, in sizes from 25 to 400 MBH gas input. Reznor Unit Heaters are great for garages, workshops, and retail applications. There are a variety of models available in varying BTU Outputs and Efficiency Ratings.