Basic question regarding CH pipe run

[Maccadam]

Hi all,

Should the feed or return be nearest to the bottom of the rads?

I'm fitting to a boat and they will fit neatly one above the other, but not side by side.

I appreciate the hot water rises so guess feed pipe nearest rads?

Cheers

David (not a plumber )

 

[Chalked]

Can't get what you mean, as your terminology is a bit off.

A feed is a pipe that would supply cold water yo top up the system
The return is the pipe that has been through rad/ cylinder and is returning to the heat source.

I'm presuming you are using a stove? So would be working on gravity. This would need a flow pipe continuously rising from the heat source to the top of the radiator. Then the return would be connected to the opposite bottom end of the radiator.

 

[rpm]

Can't get what you mean, as your terminology is a bit off.

A feed is a pipe that would supply cold water yo top up the system
The return is the pipe that has been through rad/ cylinder and is returning to the heat source.

I'm presuming you are using a stove? So would be working on gravity. This would need a flow pipe continuously rising from the heat source to the top of the radiator. Then the return would be connected to the opposite bottom end of the radiator.

My sisters boat is all in 22mm copper.

 

[ShaunCorbs]

Gravity or pumped ?

 

[Maccadam]

Gravity or pumped ?

To all that responded, many thanks.

I'm using 22mm copper, 2 pipe system, hot to rads and a return pipe carrying the 'cold'... apologies about terminology. I'll be running a diesel webasto, it has intergrated pump.

Interestingly I will also have a stove with back boiler (1.5 kW to back boiler, 3 to stove). I will also connect this to the same rads/pipes as diesel heater. Will have divert after calorifier taking water away from diesel heater. Separate pump for stove.

Only problem I foresee (I'm not a plumber or heating engineer) is the diesel heater has to cool the heating chamber slowly of its own accord, so some how I supply it water whilst stove is on, or I only turn on stove when diesel heater has cooled.

Diesel heater can be put on timer so boat warm when I get home, then I switch off and put stove on.

Cheers

David