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Thread: Question about Teledyne Laars heater

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    Join Date
    May 2008
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    Question about Teledyne Laars heater

    I am heating our pool for the first time this season. We have only owned the pool/house for a year and heated the pool on a couple of occasions and we heat the spa regularly. When I heat the pool or spa I turn on the heater and set the temperature from our Aqualink system in the house and I don't do anything with any of the equipment outside. So looking at the heater today, I noticed a dial for "spa, off, pool", and currently it is set to "spa". When I am heating the pool, as opposed to the the spa, should I go outside and turn the dial to "pool"? Will this heat my pool faster? I have tried to look online for a manual for this heater (Teledyne Laars Series 2, Model ESC), but all I can find is the blown up parts diagram.

    Thank you as always for your help! I really don't know what I would do without all of the help from this site!
    16,000 gallon IG gunite pool w/attached spa, Pentair Intelliflo VS, Sta-Rite DE Filter, 2 skimmers, 1 main drain, Polaris 280, iAqualink, blower, Jandy Heater

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    launboy's Avatar
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    Jun 2008
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    Re: Question about Teledyne Laars heater

    I'm not 100% sure because I don't own one myself, but the knob may be so you can set one temp for the spa, and one temp for the pool, then just switch between modes without messing with the temps. This probably only applies if you control the heater using its panel.

    My other guess is that it is a limit. The Spa side might have the limit set to 104 and the pool side might have it set lower, like 90-92 or something.

    HTH,
    Adam
    18' x 42" Intex Easyset Pool, with 16' x 52" deep end in the middle. Approx. 5500 Gal.
    Hayward Power-Flo LX 1 HP, 100# Jacuzzi Brand Sand Filter(Piped underground so it looks nice) 8)
    3 - 2' x 20' Solar Pool Heater Panels(roof mounted)
    Goin' on 9 summers...NOBODY thought it would last this long.
    Buried Portable Spa sharing pumps and water with pool (Almost complete project)

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Question about Teledyne Laars heater

    The AquaLink is over-riding the thermostat in the pool heater, turning the pool heater on and off based on it's own temperature sensor. The heater should be set to a temperature a little hotter than you would ever want, so that it heats any time it has power, unless the water gets too hot (which will only happen if the AquaLink is malfunctioning).
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    May 2008
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    Re: Question about Teledyne Laars heater

    Thank you! I won't touch anything on the heater then. I started wondering because when I felt the water coming out of the returns in the pool it didn't feel as hot as the water coming out of the returns when we are heating just the spa. It seems to take about 1 hour per degree to heat the pool. Is this about normal?
    16,000 gallon IG gunite pool w/attached spa, Pentair Intelliflo VS, Sta-Rite DE Filter, 2 skimmers, 1 main drain, Polaris 280, iAqualink, blower, Jandy Heater

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    JasonLion's Avatar
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    Re: Question about Teledyne Laars heater

    Yes, slow heating is normal. Pools require huge amounts of heat to change temperature.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Join Date
    Feb 2008
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    Re: Question about Teledyne Laars heater

    1 hour per degree is what I usually plan on when heating mine. I suspect most pool heaters are sized for that, or close to it.
    31000 Gal IG L-shape w/ spa, Riversand finish (PebbleSheen clone)
    Jandy 60 sq ft DE, 2.5 HP (uprated) Stealth pump, Polaris 280 w/ booster, Jandy PDA PS4 controller

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