i am using joven 830i

with pump rm395 cash n carry from ELK

sooooooooo good but pump abit noisy...hehehe

it is possible.

but does the heating element can heat the water efficiently ? since you have water pump, the water heater have their own recomended flowrate / pressure to heat water.

the matter is how hot can the water be if you max the heater ? this is what i realize when in hotel uses this set up.

so u need to adjust the water volume on the heater.