- Secondary cold feed connection to hot water storage cylinder using injector Tee
- Willis Immersion Heater
- Thermosyphonic flow circulates hot water to hot water storage cylinder where it stratifies at top of cylinder, stored at high temperature and available for immediate use.
- Temperature sensor
- Secondary flow
Operating Instructions
A Willis Immersion heats approximately 4.5 litres of water to a high temperature every 5 minutes, so if one can decide before switching on how much water is required the pre-heating time can be calculated as follows:–
4.5 litres for hand-washing, baby’s bath, shaving, breakfast dishes etc. = Pre-heat for 5 minutes
9 litres required for washing-up dinner dishes, medium sized clothes wash = Pre-heat for 10 minutes
9–14 litres required for a shower = Pre-heat for 10/15 minutes
54 litres required for a bath = Pre-heat for 1 hour
Warning
Because the Willis Immersion is such a rapid water heater, it is not recommended for use in hard water areas.
Operation
Even with the efficiency of a Willis Immersion a cylinder insulation jacket of 75mm thickness is recommended.
An extra switch and warning light in your kitchen reminding you to switch-off will save you pounds.
Get into the habit of having a shower instead of a bath. It will save electricity, water and time.
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