By Hayward Pool Products




Alternate Part #'s GLD-451-1018, HAYHL-CHEM, HLCHEM

Product Description

SENSE & DISPENSE - Total Pool Chemistry

What if your pool could self-adjust; automatically test its own chemistry, and balance and sanitize the water? What if it always knew what the water needed and adjusted continuously, eliminating unhealthy highs and lows? Ensuring brilliant, balanced water all the time, automatically. You can get your water in balance with Goldline® Controls.

This professional-grade ORP and pH sense-and-dispense technology was previously only available for commercial pools. Goldline Controls now offers an economical approach, with the same level of accuracy, for residential in-ground pools. The Sense in Dispense is an Add on Module which can only be used in conjunction with the Goldline Controls Pro Logic Control System

The Advantage
When pool owners add Sense and Dispense, Total Pool Chemistry technology to their Pro Logic or Aqua Plus controls, they get the first controls to offer integrated chemistry automation. That is a significant accomplishment, which means that there is no additional box on the pool pad and no additional power line required, so pool owners still only use their control pad or remote to control all functions of the pool and spa. This integration lowers installation and energy costs since the power comes from the existing controls. The technology can also be added to new or existing control units, and the level of control can be customized for the individual pool owner based on their needs and the needs of the environment. Pool owners can add the Sense and Dispense to their Aqua Rite Pro salt chlorinators. As with the Pro Logic or Aqua Plus controls, the Aqua Rite Pro salt chlorinators can be featured with integrated chemistry automation that does not require a separate box on the pool pad or an additional power line. And while there are existing products that may provide chemistry automation, Sense and Dispense is the only integrated solution that can be added to new or existing Aqua Rite Pro salt chlorinators at any point in time.

How It Works
Sense and Dispense, Total Pool Chemistry technology consists of two chemistry kits. The first kit senses pH and ORP levels and dispenses a self-renewing supply of pure chlorine generated from salt. The second kit lowers pH by using CO2, which has been shown to be particularly effective on salt chlorinated pools where the pH tends to drift up. By using CO2, pool owners are able to reduce the pH to recommended levels by forming H2CO3 (carbonic acid), a safe acid that does not require handling. Both chemistry kits are used for controls and chlorinators. Additionally, the technology can support commercially available Peristaltic Acid pumps preferred by some pool professionals for the management of pH (This approach does not require the second kit to manage pH).

Q: Can you give a simple explanation on how this system works and the proper items which would need to be purchased?

A: The Sense & Dispense is an add on module for the Pro Logic control system & the AquaRite XL. When you purchase the AQLCHEM Chemistry Kit #1 With pH sense, liquid ph dispense, ORP Sense & ORP dispense, you are now able to have your Pro Logic or AquaRite XL system sense the pH level in your pool as well as display the pH level on the Pro Logic controller and dispensed the proper amount of liquid acid to the pool to adjust your ph. Typically customers will purchase one of our Stenner Liquid Acid Pumps and Acid tank to dispense acid to pool. The AQLCHEM Chemistry Kit # 1 will also sense your ORP/Chlorine level and display the ORP level on your controller as well dispense the appropriate amount of chlorine to your pool when your chlorine levels fall outside of your preset set points. The chlorine is sent to the swimming pool using the salt chlorine generator on the Pro Logic system. So the AQLCHEM will sense the pH in the pool, dispense the liquid acid to maintain ph level as well as sense the ORP/Chlorine in the pool and then dispense the appropriate amount of chlorine to the pool, the only thing the AQLCHEM will not do is dispense the appropriate amount of pH via CO2. If you want to maintain your ph through CO2 instead of liquid Acid then you would require the Purchase of the AQLCHEM2 CO2 add on module. Now if you want to automate the process of dispensing pH back to the pool via CO2 you will need to purchase the AQLCHEM2 Chemistry Kit #2 CO2 pH dispense module. The AQLCHEM2 would be purchased in addition to the AQLCHEM. Which method should I use to maintain my ph, liquid acid or CO2? We reccomend CO2 as you dont have to worry about handling acid and it the lowest it can drop your ph is to 5.5 ppm where liquid acid could drop your ph all the way down to 0.0 PPM which could be very hamrul to your pool plaster, liner or equipment. If you will be using muratic acid you would use one of our Stenner Liquid Chemical feeders which is a 15 Gallon tank with a feed pump on the tank which would dispense acid back to the pool, you may or Stenner Liquid Feeders here. If you decide to go with a CO2 tank this can be purchased locally. Lastly if you have a AquaLogic system you may purchase the AQLCHEMUPG to allow your Aqua Logic to be able to add the AQLCHEM and AQLCHEM2 to an Aqua Logic control.

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?     Asked on 9/10/2018by Larry Landset

Hi, two questions...(1) Does this unit work with the Hayward Goldline Aqua Logic AQL-PS-4? (2) Does the AQL2-POD2 plus AQL2-BASE-RF AquaConnect Wireless Antenna work with this unit as well? Thank you.

A  Answered on 9/10/2018 by InyoPools Product Specialist Lennox H.

Hi, Larry. Those pieces of equipment are not compatible. In order to get them to work, you will need to replace your current PCB with the ProLogic Main PCB -  GLX-PCB-PRO

?     Asked on 5/21/2019by Russ

Will this work with gold line pro logic, aqua plus with a chem 3 120 acid feeder and Goldline T-cell 15. Also are the probes GLX ph and orp probes? I also have automated sprinkler valve. Everything is automated. This wld b a replacement equipment. Thx

A  Answered on 6/28/2019 by Industry Professional

Yes, This will work with the Pro Logic

?     Asked on 4/5/2020by John

I have a ProLogic PS-8 that I'd like to upgrade with this. From what I understand, I simply have to buy this and CHEM2 to get the CO2 dispenser. Can you tell me why there are also CHEM3 and CHEM4 kits? I don't understand their use.

A  Answered on 4/7/2020 by Industry Professional

The chem 2 is a 120v solenoid valve used to adjust the ph side of the water chemistry that uses a co-2 tank. The chem4 acid is also a feed system used to adjust the ph side of the water chemistry that uses muriatic acid or liquid ph decreaser . The chem4 chlor is a feed system to add liquid chlorine to the sanitizer side of the water.


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