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Laars/ Jandy FAQ (cont.)

To heat a pool quickly after periods of intermittent shutdown, a larger gas-fired heater is needed. And in colder climates a larger than standard size heater also is recommended for "constant" heating. Maintaining pool temperature requires the same amount of fuel regardless of the heater size. For intermittent heating however, a larger heater actually saves fuel because it brings the pool to temperature more quickly.


If you have questions about heater sizing, consult your Teledyne Laars/ Jandy dealer.


What are the differences between constant and intermittent heating?


Just what the terms imply. With constant heating your pool temperature is kept at a comfort level, and your pool is ready for use at all times. You set your thermostat at the temperature you want and forget it. This is very convenient but more costly as more fuel is used to maintain temperature in the pool at all times.


With intermittent heating, you heat your pool only for those periods when you expect to be using it. For example, if you swim only on weekends, you would heat up the water for weekend use only and shut off your heater during the week.


With either heating method, the use of a good pool cover can conserve heat and reduce fuel costs considerably.


Any pointers on intermittent heating?


While intermittent heating generally effects greater fuel economy, just as you would achieve by cutting off your furnace while away from home for several days, even less heating is required with this method if you keep a cover on your pool when it is not being used. A covered pool stays warmer than an uncovered one. Shutting down your heater for less than 2 or 3 days can be a false economy if you are not using a cover because building pool temperature up again tends to offset the "shutdown" savings. The less temperature buildup you require, the less energy will be needed.


Remember, too, that intermittent heating requires a heater large enough to heat your pool quickly when needed.


How can we conserve energy and still fully enjoy our pool?


First, keep your thermostat at the lowest comfortable setting—and mark this setting on your thermostat dial. Second, if you swim only on weekends and are not using a cover, keep your heater on a standby setting of 70 degrees. With a cover on the pool when you’re not using it, you can leave the thermostat at your normal setting. Third, if you’re vacationing for a couple of weeks or more, or shutting down for the winter, turn the heater off completely, including any pilot light. Fourth, use all available means to prevent heat loss. Shelter your pool from prevailing winds using hedges, other landscaping, cabafias or decorative fencing as windbreaks even though the pool is covered. Finally, use a pool cover whenever you are not using the pool.


Is a pool heater safe?


As safe as any major heating appliance in your home. Teledyne Laars/ Jandy heaters, for example, are equipped with automatic safety pilots or ignition safeguards, pressure regulators, water pressure relief valves and other safety features. Shut-off controls are automatic. Electric shock hazard is avoided by construction and installation of the heater in accordance with strict electrical standards and codes.


Teledyne Laars/ Jandy offers two types of gas-fired heaters. One has a standing pilot and a built-in millivolt electrical system. The other has 24 volt solid-state electronic pilot ignition supplied by household current. Both are as safe as your other gas appliances when properly installed.


Teledyne Laars/ Jandy’ gas-fired models are design-certified by the American Gas Association. Our oil-fired heater, which is internally grounded according to the National Electric Code, is UL listed. Every Teledyne Laars/ Jandy heater is fired up and fully performance-tested at the factory prior to sale.


How automatic is a pool heater?


All you do is set it. For heating only at specific periods, a time clock or electronic timers may be used for automatic shutdown and turn-on


Are all gas-fired heaters built alike?


Definitely not. Some are built like an ordinary tank-type hot water heater, or with heating coils inside the water tank. Teledyne Laars/ Jandy gas-fired heaters were the first ever built specifically for pools. Our heaters utilize the direct-fire method for greater efficiency. Patented stainless steel burners heat finned copper tubes from which the pool water absorbs heat as it flows through them. This simplified direct-fire principle, first introduced by Teledyne Laars/ Jandy 40 years ago, makes our heaters the most imitated on the market.


Aren’t all oil-fired heaters basically the same?


No. Teledyne Laars/ Jandy oil-fired heaters are trim and compact, about half the size of many other oil-fired heaters. But the most important difference is that we have adapted our proven heat exchanger to use stainless steel finned tubes to resist sulphur corrosion. The result is efficient heat transfer with only minimal annual cleaning. And these oil-fired models use our time-tested controls throughout—all proven components for safe, automatic operation.


What features should we look for in a pool heater?


You should be concerned with economy of operation, reliability and durability.      (continued........)


The information on this page is provided by Teledyne Laars/ Jandy, a leader in the Pool Heating Industry, from their brochure "Facts about pool heating"

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