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Ascjim

  • Posts: 220
Hot Water
« on: May 31, 2019, 12:56:44 pm »
I'm interested in getting a L5 gas heater for one of our vans and was wondering if we could run a two man set up from one unit.

I'm happy to buy two units running off one gas bottle but I thinking of the space saving in the van.

Daz, any tips of setting up?

Cheers




dazmond

  • Posts: 23977
Re: Hot Water
« Reply #1 on: May 31, 2019, 01:03:55 pm »
I'm interested in getting a L5 gas heater for one of our vans and was wondering if we could run a two man set up from one unit.

I'm happy to buy two units running off one gas bottle but I thinking of the space saving in the van.

Daz, any tips of setting up?

Cheers

id say dont bother.....they can be dangerous.....also you cant run a 2 man set up off one heater......or one bottle for that matter
price higher/work harder!

Spruce

  • Posts: 8465
Re: Hot Water
« Reply #2 on: May 31, 2019, 02:47:12 pm »
I'm interested in getting a L5 gas heater for one of our vans and was wondering if we could run a two man set up from one unit.

I'm happy to buy two units running off one gas bottle but I thinking of the space saving in the van.

Daz, any tips of setting up?

Cheers

id say dont bother.....they can be dangerous.....also you cant run a 2 man set up off one heater......or one bottle for that matter

This sounds like someone is trying to wind Daz up. So I doubt this is a newbie poster.

He could Daz, but he would need a header tank, 2 water to water plate heat exchangers and a 12v pump to circulate the heated water in an internal enclosed heat circuit in the same way your diesel heater works. Best also to have thermostatic mixing valves on each heat exchanger.

L5 gas heater has no provision for safe fumes extraction outside the van so 2 of them will be double trouble. Even using one isn't advised tbh, especially if you are employing. A gas bottle also takes up valuable space.

One of the local lads had a gas heater in his van vented through the roof. The gas regulator that screws into the gas bottle developed a leak inside the regulator and filled his van with gas. The heater was removed that very evening.

Success is 1% inspiration, 98% perspiration and 2% attention to detail!

The older I get, the better I was ;)

dazmond

  • Posts: 23977
Re: Hot Water
« Reply #3 on: May 31, 2019, 04:31:21 pm »
I'm interested in getting a L5 gas heater for one of our vans and was wondering if we could run a two man set up from one unit.

I'm happy to buy two units running off one gas bottle but I thinking of the space saving in the van.

Daz, any tips of setting up?

Cheers

id say dont bother.....they can be dangerous.....also you cant run a 2 man set up off one heater......or one bottle for that matter

This sounds like someone is trying to wind Daz up. So I doubt this is a newbie poster.

He could Daz, but he would need a header tank, 2 water to water plate heat exchangers and a 12v pump to circulate the heated water in an internal enclosed heat circuit in the same way your diesel heater works. Best also to have thermostatic mixing valves on each heat exchanger.

L5 gas heater has no provision for safe fumes extraction outside the van so 2 of them will be double trouble. Even using one isn't advised tbh, especially if you are employing. A gas bottle also takes up valuable space.

One of the local lads had a gas heater in his van vented through the roof. The gas regulator that screws into the gas bottle developed a leak inside the regulator and filled his van with gas. The heater was removed that very evening.

what i mean is he cant use one L5 gas heater for  a 2 man system spruce.....of course if he wanted to go down the diesel route,then of course yes...... :)
price higher/work harder!

Dave Willis

Re: Hot Water
« Reply #4 on: May 31, 2019, 08:10:20 pm »

“One of the local lads had a gas heater in his van vented through the roof. The gas regulator that screws into the gas bottle developed a leak inside the regulator and filled his van with gas. The heater was removed that very evening.“

Exactly what I had. All that gas sat around the leisure battery connections, brilliant!

Spruce

  • Posts: 8465
Re: Hot Water
« Reply #5 on: May 31, 2019, 09:11:20 pm »

“One of the local lads had a gas heater in his van vented through the roof. The gas regulator that screws into the gas bottle developed a leak inside the regulator and filled his van with gas. The heater was removed that very evening.“

Exactly what I had. All that gas sat around the leisure battery connections, brilliant!

This is why I would always go the vapour tank route. Tanks made by Gas It are a good example. They will mostly be fitted inside the van, but they have an enclosed housing on the side of the tank that seals the gas pipes and regulator to prevent gas escaping into the cabin/cargo area. This enclosure is vented to the outside through the van's floor.

The other thing is that caravans and motor homes have a vent hole drilled in the floor. As gas is heavier than air this vent will allow small amounts of escaping gas to vent outside. But the regulations require the gas bottle to the 'screened' off from the inside in a motorhome and a gas bottle outside on the draw bar of a caravan.

Its the same principle as an LPG tank in the boot of a petrol car that has be converted to LPG. This same enclosure is vented to the outside to protect the car's occupants.

Success is 1% inspiration, 98% perspiration and 2% attention to detail!

The older I get, the better I was ;)

Ascjim

  • Posts: 220
Re: Hot Water
« Reply #6 on: June 01, 2019, 10:22:32 am »

“One of the local lads had a gas heater in his van vented through the roof. The gas regulator that screws into the gas bottle developed a leak inside the regulator and filled his van with gas. The heater was removed that very evening.“

Exactly what I had. All that gas sat around the leisure battery connections, brilliant!

This is why I would always go the vapour tank route. Tanks made by Gas It are a good example. They will mostly be fitted inside the van, but they have an enclosed housing on the side of the tank that seals the gas pipes and regulator to prevent gas escaping into the cabin/cargo area. This enclosure is vented to the outside through the van's floor.

The other thing is that caravans and motor homes have a vent hole drilled in the floor. As gas is heavier than air this vent will allow small amounts of escaping gas to vent outside. But the regulations require the gas bottle to the 'screened' off from the inside in a motorhome and a gas bottle outside on the draw bar of a caravan.

Its the same principle as an LPG tank in the boot of a petrol car that has be converted to LPG. This same enclosure is vented to the outside to protect the car's occupants.

This is what I did last year when I converted a van into a camper. I got a 'Gas it' refillable bottle, a gas locker and put a drop vent under the van, if there was a leak the gas would escape through the drop vent as it's heavier than air. Having a open bottle in the van isn't safe at all!

I like the idea of having a header tank. 1 pump going into the heater, then the hot water going into a smaller tank (maybe 25l) and running the 2 pumps from there - I guess that would work.

Spruce

  • Posts: 8465
Re: Hot Water
« Reply #7 on: June 01, 2019, 02:21:12 pm »

“One of the local lads had a gas heater in his van vented through the roof. The gas regulator that screws into the gas bottle developed a leak inside the regulator and filled his van with gas. The heater was removed that very evening.“

Exactly what I had. All that gas sat around the leisure battery connections, brilliant!

This is why I would always go the vapour tank route. Tanks made by Gas It are a good example. They will mostly be fitted inside the van, but they have an enclosed housing on the side of the tank that seals the gas pipes and regulator to prevent gas escaping into the cabin/cargo area. This enclosure is vented to the outside through the van's floor.

The other thing is that caravans and motor homes have a vent hole drilled in the floor. As gas is heavier than air this vent will allow small amounts of escaping gas to vent outside. But the regulations require the gas bottle to the 'screened' off from the inside in a motorhome and a gas bottle outside on the draw bar of a caravan.

Its the same principle as an LPG tank in the boot of a petrol car that has be converted to LPG. This same enclosure is vented to the outside to protect the car's occupants.

This is what I did last year when I converted a van into a camper. I got a 'Gas it' refillable bottle, a gas locker and put a drop vent under the van, if there was a leak the gas would escape through the drop vent as it's heavier than air. Having a open bottle in the van isn't safe at all!

I like the idea of having a header tank. 1 pump going into the heater, then the hot water going into a smaller tank (maybe 25l) and running the 2 pumps from there - I guess that would work.

I was thinking of replication a Webasto based diesel hot water system, just replacing the diesel furnace with a gas heater.

With a diesel heater you have an internal hot water circuit with the furnace (boiler), circulating hot water pump through one or two water to water plate heat exchangers, a header tank and then back to the boiler.

The external circuit/s will be the water tank, the wfp pump/s pumping water through the heat exchangers with the mixing valves controlling the hot water temperature from the heat exchanger to the pole via the hose reel.
Success is 1% inspiration, 98% perspiration and 2% attention to detail!

The older I get, the better I was ;)