- Economy through efficiency
- Does not require regular cleaning or descaling
- Running cost will not increase with time
- Thermal efficiency for life
- 2 Year Warranty
- Single or Three phase
- This item is not available for next day delivery.
Heater Sizing Chart for a 7 hour heating period per 24 hours with a floating solar cover
(If a floating solar blanket is not used increase the heater size by 50%)
Heater Size | Metric/Imperial |
24°C | 27°C | 30°C |
Litres | Gallons | Litres | Gallons | Litres | Gallons |
6kW | 16,000 | 3520 | 13,000 | 2860 | 11,000 | 2420 |
7.5kW | 21,000 | 4620 | 16,000 | 3520 | 13,000 | 2860 |
9kW | 25,000 | 5500 | 20,000 | 4400 | 16,000 | 3520 |
12kW | 33,000 | 7260 | 26,000 | 5720 | 21,000 | 4620 |
|
15kW | 41,000 | 9020 | 33,000 | 7260 | 27,000 | 5940 |
18kW | 49,000 | 10,780 | 39,000 | 8580 | 32,000 | 7040 |
21kW | 58,000 | 12,760 | 46,000 | 10,120 | 37,000 | 8140 |
24kW | 66,000 | 14,520 | 53,000 | 11,660 | 42,000 | 9240 |
|
30kW | 82,000 | 18,040 | 66,000 | 14,520 | 53,000 | 11,660 |
The Thermalec sizing chart is for outdoor swimming pools in the South of England, running from the beginning of May until the end of September. For swimming pools in the North, multiply the heater size by 1.3 - 1.5 depending on the exposure of the pool.
The figures shown for the capacity of the pool - in gallons or Litres - are based upon an average depth of 4'6" (1.36m) and are provided as a guide when an exact surface area is not known.
Indoor pools: providing the indoor air temperature is maintained at least 1°C above the pool temperature by an alternative form of heating 24 hours per day, the heater size may be reduced by multiplying by 0.7, but since running costs are related to the size of the pool and the temperature required, not the size of the heater, we advise keeping to the table where possible.
In countries where off-peak electricity is not available, heaters sized at 1kW per 1000 gallons (4500 litres) with the heater operating 24 hours per day, will normally be adequate and will give an 8°F (4.4°C) rise in 24 hours assuming no losses
All information given is an approximation.
The greatest Advance in Pool heating - Thermalec + E7 + Solar Cover
The introduction and almost universal acceptance of the use of the floating solar blanket has been the greatest advance we have seen in over 30 years of specialising in pool heating.
The blanket allows the Sun's rays to penetrate deeply into the water. It also seals the surface preventing evaporation and cutting heat loss night and day - halving the running cost.
Most heating systems will start to heat in the early morning unaware that the Sun will do all the work necessary and so they start to heat while the Sun is out - wasting energy competing with the Sun.
Because the Thermalec operates only during the Economy 7 period, starting at about midnight, it’s very sensitive control thermostat can detect exactly how well the water has been warmed by natural means, then makes sure the pool is exactly at the temperature you have set for your morning dip.
After a warm day it may not have to heat at all, but after a dull day it may run for most of the night. During a typical summer it will operate for 3 or 4 hours on average, after the initial warm up period at the beginning of the season.
HEATER BODY:
Cast in iron, with a heavy fusion bonded epoxy coating impervious to chemically treated pool water, constructed in accordance with British Patent 2.092,282 Design pressure of 35psi (2.46kg/cm2) with 3/4" safety valve(s) set to operate at the maximum normal working pressure of 30psi (2.1kg/cm2) giving protection to both the heater and the installation as a whole against over pressure. A 1/2" drain valve at the lowest point allows the heater to be left empty in winter. Flow connections consist of easily removable UPVC stub flanges into which the pipes may be fitted using suitable adhesive, as the flanges can be released easily from the heater no unions are required, neither is any form of heat sink needed. Flow direction is from left to right, but may be reversed quite simply on site following the installation instructions.
HEATER ELEMENTS:
Heavy duty sheathed elements to BS-EN-60335-1, with low Watt density for long life, are mounted individually in a removable top plate, which allows complete inspection of the interior of the heater.
CONTROLS:
Heavy duty contactors control the power supply to the elements. The contactors are switched in turn by a filter pump interlock relay, a pool temperature controller with less than 1°C differential, and a manual reset safety thermostat to operate before the temperature reaches 53°C. The control circuit is protected by a 2A fuse. A minimum of 6 indicator lights monitor every stage for simple diagnostic servicing. The controls are mounted in a plastic coated steel enclosure above the heater body. Cable entry is through a removable plate in the rear panel.
