WARNING
Only qualified personnel
in accordance with the country/regional requirements & regulations, should
install and maintain this equipment. Unauthorized alteration or improper maintenance of this unit may
release the manufacturer from any warranty claims. The installation must be in accordance with the
instructions in this manual and applicable local plumbing and electrical codes.
INTRODUCTION
Founded in 1966, Thermalec
®
Pool and Spa Products was the first company in Britain to manufacture a
range of electric heaters specifically for public, commercial and domestic swimming pools and spas. In
1999, Thermalec
®
joined the Meddings Group of Companies to enhance and diversify
the latter’s
engineering activities whilst allowing Thermalec
®
to widen its horizons as part of a larger group. Over the
years, the Thermalec
®
electric pool and spa heater has been refined and today has an established name
in many areas of the world as the quality heater of first choice. The clever patented design, robust quality
and inherent reliability of the Thermalec
®
electric heater have earned it a position as the market leader in
Britain. Thermalec
®
heaters are also exported to the Middle East, the Far East and Europe, where
Thermalec
®
has gained the confidence of pool builders and operators as a name they can rely on.
Thermalec
®
pool and spa heaters are designed and built with care at our factory in the South West of
England. Our overriding objective is the application of half a century of experience, delivering to each and
every customer a quality pool heater that will give many long years of safe, efficient and economical
service.
The dedication that we apply to the design and building of a truly superlative pool heater extends further.
We exchange knowledge and experience with our partners worldwide to ensure the total satisfaction of
our customers, both installers and final users. Thermalec
®
engineers and technicians share their skills,
offering guidance, training and support in heater selection, installation and operation. This is particularly
for difficult applications such as sea water pools, health spas or hydrotherapy pools
– areas in which the
performance of Thermalec
®
pool heaters are especially outstanding.
At Thermalec
®
, we are justly proud of our electric pool heaters. In the few pages that follow, you will find
outline details of the range and of some of the features that make Thermalec
®
heaters the natural quality
choice for any size or type of pool or spa. This manual provides installation procedures, operating and
maintenance instructions and a parts list for the Thermalec
®
Swimming Pool Heater. Your Thermalec
®
Electric Swimming Pool Heater has been designed and engineered by British Engineers to provide you
with the most advanced highest quality heating system possible. Its operation is the most efficient and
pollution-free. Our models are available for every size or make of pool. To ensure a long life of trouble-
free service, your Thermalec
®
swimming Pool Heater should be carefully installed in accordance with the
instructions given in this manual. Failure to do so may damage the swimming pool heater and the pool
equipment to which it is connected. Only qualified personnel should install and maintain this unit, and, of
course, local plumbing and electrical codes have precedence over these instructions.
DESCRIPTION
The Thermalec
®
Swimming Pool Heater consists of titanium elements encased in a cast iron heating
vessel, the heaters upper external enclosure contains the electrical heating and control system. To help
maintain the heater to its optimum level, a brief description of its components and their operation has
been added to aid the customer. The cast iron vessel houses the elements. The vessel and heating
elements are the only components of this heater that are in contact with the water and has a unique spiral
flow of water through it, this promotes efficient heat transfer, minimizes scaling of the elements and the
build-up of sediments. The internal design of the heater prevents the direct impingement of cold pool
water onto the heating elements, reducing thermal shock, prolonging the service life. If air gets into the
