Thermalec Electric Pool Heater

Simply the best pool heaters in the world!

• Two years parts warranty
• Lifetime efficiency guarantee
• No harmful emmisions to worry about
• Silent operation
• Totally efficient, reliable and economical

Economical to run, quiet and unobtrusive, easy to operate, safe and simple to install - all these are true of a Thermalec electric heater for your swimming pool or spa.
Thermalec heater systems will keep your pool at a constant temperature level throughout your chosen swimming or spa season, efficiently and economically.

Note: 7.5-24kW heaters are wired for single phase, but are also supplied with an on-site adaptor for conversion to three phase.

The unique way to heat your pool

Thermalec pool heaters are unique in that they will operate with water coming from the filter with high velocity without it striking the heating elements directly. Instead, the water is deflected by baffles, forcing it round the curved base of the heater. 

Thermalec is guaranteed to hold its thermal efficiency for life, without regular cleaning or de-scaling.

An On/Off switch is provided to the control the main power to the heating elements.

Standard Specification

HEATER BODY:
Cast in BS-EN-1561-1997-ENGJL-200 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 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, nor 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 incoloy 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 vessel.

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.

SIZING CHART

Heater Size	Metric
	24°C		27°C		30°C
	M²	M³	M²	M³	M²	M³
3Kw	6	8	5	7	4	5
6kW	12	16	10	13	8	11
7.5kW	15	21	12	16	10	13
9kW	18	25	14	20	12	16
12kW	24	33	19	26	15	21
15kW	30	41	24	33	19	27
18kW	36	49	29	39	23	32
21kW	42	58	34	46	27	37
24kW	48	66	38	53	31	42
30kW	60	82	48	66	39	53
36kW	72	99	58	79	46	64
48kW	96	132	77	105	62	85
60kW	120	165	96	132	77	106
72kW	144	197	115	158	93	127
84kW	168	230	134	184	108	149
96kW	192	263	154	210	124	170
108kW	216	296	173	237	139	191
120kW	240	329	192	263	155	212

Model Ref	Imperial
	75°F		80°F		85°F
	SQ.FT.	GALLS.	SQ.FT.	GALLS.	SQ.FT.	GALLS.
12PHR/3	63	1750	50	1400	42	1170
12PHR/6	125	3500	100	2800	83	2340
12PHR/7.5	156	4370	125	3500	104	2920
12PHR/9	188	5250	150	4200	125	3500
12PHR/12	250	7000	200	5600	167	4670
24PHR/15	313	8750	250	7000	208	5840
24PHR/18	375	10500	300	8400	250	7000
24PHR/21	438	12250	350	9800	292	8170
24PHR/24	500	14000	400	11200	334	9340
36PHR/30	625	17500	500	14000	417	11670
36PHR/36	750	21000	600	16800	500	14000
72PHR/48	1000	28000	800	22400	667	18680
72PHR/60	1250	35000	1000	28000	834	23350
72PHR/72	1500	42000	1200	33600	1001	28020
120PHR/84	1750	49000	1400	39200	1167	32680
120PHR/96	2000	56000	1600	44800	1334	37350
120PHR/108	2250	63000	1800	50400	1501	42020
120PHR/120	2500	70000	2000	56000	1668	46690

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 capacity of the pool - in gallons or M³ - 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.

3-12kW Instruction Manual	15-24kW Instruction Manual
30-36kW Instruction Manual	48-72kW Instruction Manual

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