Dayton fuel trimmer 60000 btu. Everything lights and fan turns on but the flame isn't very big and the air isn't very hot. Warm maybe. What can I do to get more heat and a bigger flame?
I assume this is a typical heater, with an on/off thermostat rather than temperature-dependent flame size controller.
Make sure the burner is clean and the flame holes are not clogged. Also make sure the heat exchanger is clean, not loaded with ash or dust.
Verify that you have adequate air supply to the heater (if the flame gets much larger when you have doors open all the way to the outdoors, you definitely have a problem, including a safety issue) and that the exhaust stack is not blocked. I've seen issues caused by bird or wasp nests in the vent plumbing.
Check inlet gas pressure, and verify that the heater main gas valve is functioning. (If you have recently added another gas appliance, the piping may not permit adequate gas flow when both are running.) If you have your gas piped in from a utility company, you may have to ask them to verify adequate flow and pressure at the meter.
Check the inlet to the gas valve to make sure it is not clogged with sediment (requires shutting off gas and removing the inlet plumbing from the valve).
Dayton 1RKT5A Heater Wiring.
answer is unattainable since it is unknown what the previous owner has done to modify it ---you can try to get a wiring diagram [none on line ] and use a meter to check unit for modifications or a failed component -----or have a repair shop check unit
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