Hi I have a carver 2000 heater. when i lifeted the wardrobe cover to look at the back I have noticed there is no ductng on the flue. I thought it has to be ducted outside. is this correct i have had the van servied at a well known service centre all advise welcome!!
Carver 2000 heater flue
- Thread starter lumpy
- Start date
There are two models of the Carver 2000 and both are floor flued.
In truth they are variations of the popular 1800 series fire, theses are are all, (bar the short lived SBD1800), floor flued with generally a 1.6kw output
In truth they are variations of the popular 1800 series fire, theses are are all, (bar the short lived SBD1800), floor flued with generally a 1.6kw output
thank you. Not sure of model but I know at the back there are no pipes off the of the heater, just a outlet
thank you. Not sure of model but I know at the back there are no pipes off the of the heater, just a outlet
The Carver heaters were license-built versions of the Truma range although there were differences between the two ranges.
The basic design of heater could be flued down through the floor with no visible flue - or a visible flue sideways through the wall or upwards through the roof.
The introduction of EN1645 standards (I can't remember the year) effectively banned the fitting of floor and wall-flued heaters on new caravans because they can get blocked by snow.
Before the introduction of EN1645, virtually all UK-built caravans with heaters had the floor-flued type with no visible flue.
The basic design of heater could be flued down through the floor with no visible flue - or a visible flue sideways through the wall or upwards through the roof.
The introduction of EN1645 standards (I can't remember the year) effectively banned the fitting of floor and wall-flued heaters on new caravans because they can get blocked by snow.
Before the introduction of EN1645, virtually all UK-built caravans with heaters had the floor-flued type with no visible flue.
Whilst what RogerL says is basically true, As far as I know Carver never actually produced a commercial wall flued convector space heater. The UK manufactures did not like cutting holes in the side walls of caravans. They preferred roof flues for space heaters.
I am also not sure on this but I believe that some caravan manufacturers designated some models of caravans for three season use only, and by doing so they were allowed to fit floor flued heaters as snow build up was not within their operating criteria.
For information only, from the late 1990's, all Carver heaters were wholly designed and built by Carver and no licence fee was payable Truma.
I am also not sure on this but I believe that some caravan manufacturers designated some models of caravans for three season use only, and by doing so they were allowed to fit floor flued heaters as snow build up was not within their operating criteria.
For information only, from the late 1990's, all Carver heaters were wholly designed and built by Carver and no licence fee was payable Truma.
Late 90's John? surely the 94 season when Carver had their wholly own on the market?
As for the other, roof flued or not, all bar the side flued Truma 220 and that Perloma Riviera jobby!! used fresh air drawn from under the floor so where it exhausts is totally irrelevant as far as the elements are concerned??
What's really important though is floor flued heaters of the Truma/Carver variety while of relativity small heat output, allows their carbon monoxide output to be 4-10ppm so near as matters.. zero
As for the other, roof flued or not, all bar the side flued Truma 220 and that Perloma Riviera jobby!! used fresh air drawn from under the floor so where it exhausts is totally irrelevant as far as the elements are concerned??
What's really important though is floor flued heaters of the Truma/Carver variety while of relativity small heat output, allows their carbon monoxide output to be 4-10ppm so near as matters.. zero
Hello Gary,
As far as I am aware in 1994, Carver were still selling some re badged or licensed Truma products to parts of the UK market and to some localised foreign markets. It was only later when the wholly UK sourced and manufactured products arrived. I do not have the exact date which is difficult to establish but it was later in the 1990's.- these are unimportant details anyway.
You are correct when you say that the air intakes for all these models were under floor, but there is a significant difference between the safety of an air intake and a flue.
As you have already pointed out the inherent efficiency of combustion of these 1.6kW models resulted in very low levels of CO which barely represented a danger. It was also the the very thermal efficiency of these models that allowed a floor flue to be used in the first case.
The products of combustion were so effectively cooled by the heat exchanger they lost some of their natural positive buoyancy, and that allowed the thermal drive of the flame in the fire way to over come the natural positive buoyancy of the flue product in the later parts of the exchanger and drive the flue gasses out below the horizontal level of the flame. This was Truma's patented feature.
In practice the 1.6kW models of heaters often condensed the water vapour content of the flue and it would be seen either dripping as condensate water and/or emerging as a cloud of water vapour from under the caravan. The larger heat input models (3000 series) could not be so efficient in the space available and hence needed a rood flue.
The following notes are related to very very rare and exceptional circumstances, and due to other safety features the danger to a UK caravanner is absolutely minimal.
With a 1.6kW floor flue the emerging flue gases are initially still lighter than air and will try to rise. This is why with the 1.6kW's underfloor flued products, ventilation holes though the floor must not be located close to the heater. After a short distance the free air movement under the floor will both dilute and cause the flue products to cool.
If there is no free air movement under a caravan such as if a caravan was fully engulfed with snow or other obstructions, (a very rare situation in the UK), then the flue product cannot escape, and will collect and spread under the caravan floor. In addition, the once used flue product will be re ingested into the air intake of the heater, and during re combustion, a higher level of CO will be produced in the flue. If this continues to collect under a caravan, then eventually some will find its way into the caravan through the required low level ventilation holes. This represents a very small danger to the occupants.
This cannot happen in a roof flued product as no flue product is released under the caravan.
The same danger does not apply to the air intake, as the only concern would be unburnt gas. Which is of course dangerous, but a fully functional heater would not be emitting unburnt gas back through its air intake, because if the heater is burning, all the gas will be burnt, and if the flame was not burning, then the Flame failure device would cut the gas supply, so the total volume of unburnt gas will be minimal. This is a far lower risk factor than an under floor flued heater and CO.
As far as I am aware in 1994, Carver were still selling some re badged or licensed Truma products to parts of the UK market and to some localised foreign markets. It was only later when the wholly UK sourced and manufactured products arrived. I do not have the exact date which is difficult to establish but it was later in the 1990's.- these are unimportant details anyway.
You are correct when you say that the air intakes for all these models were under floor, but there is a significant difference between the safety of an air intake and a flue.
As you have already pointed out the inherent efficiency of combustion of these 1.6kW models resulted in very low levels of CO which barely represented a danger. It was also the the very thermal efficiency of these models that allowed a floor flue to be used in the first case.
The products of combustion were so effectively cooled by the heat exchanger they lost some of their natural positive buoyancy, and that allowed the thermal drive of the flame in the fire way to over come the natural positive buoyancy of the flue product in the later parts of the exchanger and drive the flue gasses out below the horizontal level of the flame. This was Truma's patented feature.
In practice the 1.6kW models of heaters often condensed the water vapour content of the flue and it would be seen either dripping as condensate water and/or emerging as a cloud of water vapour from under the caravan. The larger heat input models (3000 series) could not be so efficient in the space available and hence needed a rood flue.
The following notes are related to very very rare and exceptional circumstances, and due to other safety features the danger to a UK caravanner is absolutely minimal.
With a 1.6kW floor flue the emerging flue gases are initially still lighter than air and will try to rise. This is why with the 1.6kW's underfloor flued products, ventilation holes though the floor must not be located close to the heater. After a short distance the free air movement under the floor will both dilute and cause the flue products to cool.
If there is no free air movement under a caravan such as if a caravan was fully engulfed with snow or other obstructions, (a very rare situation in the UK), then the flue product cannot escape, and will collect and spread under the caravan floor. In addition, the once used flue product will be re ingested into the air intake of the heater, and during re combustion, a higher level of CO will be produced in the flue. If this continues to collect under a caravan, then eventually some will find its way into the caravan through the required low level ventilation holes. This represents a very small danger to the occupants.
This cannot happen in a roof flued product as no flue product is released under the caravan.
The same danger does not apply to the air intake, as the only concern would be unburnt gas. Which is of course dangerous, but a fully functional heater would not be emitting unburnt gas back through its air intake, because if the heater is burning, all the gas will be burnt, and if the flame was not burning, then the Flame failure device would cut the gas supply, so the total volume of unburnt gas will be minimal. This is a far lower risk factor than an under floor flued heater and CO.
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