Unfortunantly In order to download the manual you have to fill out that you are a student HVAC professional at NORDYNE University Log In Register
Once you are in you select north american products.
Then select intertherm and click search products.
The Search will come up.
Select HVAC, Leave Select product type set to optional and type in the box below that M7RL. Click Search products.
Click the first Item on the list M7RL 95.1% AFUE Gas Furnace.
This will give you it all!
Be advised. If you are not a HVAC professional. Installing the furnace is not recommended. In order to get parts you will need to have a Contractors license or EPA Certification to purchase from the supply chains like Johnstone supply (the best place to get any part). Please be careful and think about the dangers of carbon monoxide, gas explosions and improper electrical hookups if you are attempting to do the repair yourself.
Hope this helps you