Amel Super Maramu 2000

On NIKIMAT, SM2K #289 I have the Espar heater D5LC.

Red Arrow is hot air going to Aft Cabin
Blue Arrow (I guess) hot air going to Forward cabin
Black Arrow (I guess) hot air going to salon

Below is the Racor diesel filter
On its right, there is a T connection.
The bottom goes to the Onan Genset
The top goes to a pump for the Espar D5LC Heater
You can see the valve used is a simple faucet.
Note: disregard the engine exhaust hose you see, it is a spare.