| 摘要 |
The disclosure relates to a water heater with an outer shell or casing (1) with interior insulation (2) and an elastic container (6) for water interiorly therein. At normal operational pressure, the container (6) substantially fills out the space in the insulation (2). The elasticity in the container (6) is sufficient in order, on opening of a faucet in the water system to which the water heater is connected, to expel a volume of water so that the volume of the container, compared with a completely filled container, is reduced by at least 8 %. |
