Hot water capacity?

[Noaman_5065025]

Dear all, is the hot water limited to the external water tank capacity or is there an internal tank inside the Carvan?

Thanks

Noaman

 

[jacky3]

hi

your carver or now truma ultra store water heater is found inside the caravan at the front or side, under seating.this is where the water is stored seperately for heating. only its capacity is around 10 litre sometimes less depending on make.so really you have only 10 litres of hot water at any given time.when you have pump and everything in place turn on pump and then hot tap only this will automatically fill the system and truma ultrastore(make sure you have lever next to water heater in horizontal position, usually red or yellow)old caravans dont have this,there is a screw on outside of caravan next to vent for heater that you turn to empty and turn back to refill

http://www.truma.com/truma/en/pr/gruppe/produktgruppe_en_23857.php

 

[ProfJohnL]

Hello Norman,

I will have to make some assumptions about your water system, as you do not give details of makes and models.

In most caravans manufactured since 1985, the supplied hot water system was either a Carver Cascade, or a Truma Boiler. Although they were totally different designs, functionaly they were very similar. They are both:

*Storage water heaters,(Approx. 70C max temp Thermostatically controlled))

*Typically hold 9 litres (2 Gallons)

*You need to push cold water in, to get hot water out

*later models had an option to heat the water using a mains element

*Takes about 30 minutes on gas to heat a full tank from cold. (20min if used with both gas an mains heating)

My third point really answers your capacity question, if your cold water runs out you cannot push any cold water in to get hot out. This process always ensures your hot tank is full, and will not run dry (subject to following the draining and recommisioning instructions over winter and in storage

The other factor you must bear in mind, is that the water may achieve 70C, whichis too hot for showering, so normally you would mix it with cold for comfort. This extends the useable amount of hot water and it is considered just possible to have two showers consecutively provided you are economic with your water.

Hope this helps