First trip..... HELP

[Oldwrench]

Ok our first trip with our rehabbed 83 excella 31cb. A few issues. The least of which was that when who ever did the kitchen, didn't pay attention to strength. The cabinet collapsed in on itself . Ended up sticking a 2x4 on top of the furnace to hold up the stove.
So the day I got home I started.
I am fairly good at most things mechanical. Ripped out the kitchen and rebuilt the cabinet, got a nice butcher block top and some new appliances. And went to put it all back together.
Trying to figure out the heater ducts. I have one that goes to the bedroom and a small 2 inch that goes to the bathroom, where does the other 2 inch one go ? And can anyone tell me where I can buy some of the 2 inch duct ? ( Old ones are trashed) and does anyone have any kind of diagram of the correct routings .
Thanks for reading and I appreciate any help I can get.

[TG Twinkie]

Sure looks like 3" to me. There may be a 2" going beneath the floor to heat the tanks. Looks like there is an excessive length on one of the hoses causing more restriction of air flow

[GMFL]

The small 2 inch duct is to heat your plumbing to prevent freezing during subfreezing temperatures sometimes they are just attached to the floor with a bracket that blows hot air under the sink,, under the shower and that general area not sure how yours attaches but the 2 inch line is definitely for tanks and plumbing are to prevent frezing

[dznf0g]

Ducting here:

https://www.dwincorp.com/product-cat...xible-ducting/

One of the 2" ducts goes through the floor to warm the tanks. I THINK yours is similar to my 30' Classic. One duct disappears through the floor near the furnace, runs in the belly pan to the fresh tank area. The other one just slips through the floor right where your vent stack comes through. That one warms the gray and black tanks as they are in the same pan.

[dznf0g]

Also, your 4" ducts are WAAAAAY too long. They should be stretched as straight as possible to reduce restrictions in airflow.