Farenheat 7500

[mwe3302]

Hello everyone, I ordered a Fahrenheat 7500 wat heater and I have a question for those that have this heater, I posted this question under picking an electric heater thread but got no response, here it is.

okay so I installed my Fahrenheat 7500 watt ceiling mount heater today that I got from Home depot.com, and it does not seem to throw off the heat that I want, it is 50 degrees outside so I thought I would just let it run on High for a couple hours. I went back out 3-4 hours later and the garage only said 76 degrees. it did not feel 76 degrees in there , that is what my garage door opener panel said because it has a temp gauge on it. this is my garage , I have a 24X30 2 1/2 car garage fully insulated , insulated entry door, and 2 9X7 insulated garage bay doors. the ceiling height is 8 feet.

in the Instructions on page 3 about half way down the page under a WARNING label there is a paragraph that says " Adjusting the Heat Output" it says heat output can be increased or decreased by switching wires at the wattage change terminal board. The heater is factory wired to deliver a heat output of 17,065 BTU per hour,....I have the 7500 watt model and BTU/HR should be 25,598 so I look down to the chart way over to the right it says move jumpers from "C-D TO A-B" and below that it says none, so I am confused its not labeled C-D or A-B anywhere in the heater and not even sure if this is set for 25,598 BTU/HR . anyone else confused about this, or did anyone that has the 7500 watt Fahrenheat model have to change any jumpers inside the heater to reach 25,598 BTU/HR ?

any help in this would be great, thanks . mike

 

[curiousB]

I would go out and purchase a clamp on ammeter if you don't already own one. They are inexpensive and a very handy tool. Heres a cheap on for $16

http://www.harborfreight.com/clamp-on-digital-multimeter-95683.html

Then measure current by clamping around one of the wires to the heater. Multiply by 240V to get your wattage.

Then I would measure AC voltage at the heater input while it is running to ensure you don't have unusual voltage drop in the feed wires from your panel. Turn off the heater and measure the voltage again. Ensure the difference between on and off voltage is less than a couple volts.


If the voltage drop on the wiring is low and the wattage computation above is substantially less than 7500W then try the alternate jumper configuration as some of the elements must be in series instead of parallel. Then do the current measurement and computation again as a double check.

 

[Pantsfall_McFixit]

By default it comes configured for 7500 watts. You do not need to move any jumpers, just connect the lines in the block. That garage is a bit large for 7500 watts, the 10k watt model would suit you better. Or perhaps two 5000 watt units (or just get another and wire for 5000 watts)

You don't happen to be one of the poor souls with 208v do you?

 

[mwe3302]

By default it comes configured for 7500 watts. You do not need to move any jumpers, just connect the lines in the block. That garage is a bit large for 7500 watts, the 10k watt model would suit you better. Or perhaps two 5000 watt units (or just get another and wire for 5000 watts)

You don't happen to be one of the poor souls with 208v do you?

how would I know if I have 208V?

 

[cmanningjr]

Use a volt meter and check between your 2 supply lines. 208v is more common in commercial, so you're probably gonna have 220-240.


Sent from my iPhone using Tapatalk

 

[midas]

So I just got my 7500 and was curious if you ever had to switch any of the wiring? Here is the out of the box wiring on mine...

 

[Steven Ray]

I have just installed my 7500 watt Fahrenheat heater in my garage. I live in east central Indiana and it's been really mild outside since the installation,therefore I haven't had the opportunity to test mine.When it comes to switching to wires to decrease the wattage, the instruction booklet shows the wattage change terminal board. My heater was factory wired for 7500 watt 25600 btu's. Check the instruction manual supplied, it explains the procedure