I have a new 15,000 btu tank top heater. After I light the pilot flame and go thru the start up procedure the screen (head) does not glow bright orange and very little heat comes off it. The L shaped tubing at feeding the head glows quite a bit and the air rushing in the tube makes a swrrling sound. Am I doing somthing wrong with this at start up? thanks - Bill
Heating & Cooling - Mr. Heater - Model MH12TS - Single Tank-top Propane Heater