WE ARE COMMITTED TO COLD AND WANT TO SHARE SOME OF THE MOST FREQUENTLY ASKED QUESTIONS WITH YOU TO HELP SERVICE YOUR GLYCOL CHILLER.
WE ARE COMMITTED TO COLD AND WANT TO SHARE SOME OF THE MOST FREQUENTLY ASKED QUESTIONS WITH YOU TO HELP SERVICE YOUR GLYCOL CHILLER.
Glycol is an antifreeze. There are two main types of glycol: propylene and ethylene. In food applications propylene glycol is used as it is non-toxic. Ethylene glycol is typically used in industrial applications.
G&D Chillers recommends a 35% Inhibited Propylene Glycol to 65% water (24.75 brix). Measure the solution using a glycol refractometer.
The chiller location needs to be on a flat, level surface, typically outside on a concrete pad. It can be installed on a roof, but this will require a roof capable for supporting the chillers operating weight. Make sure you contact your local municipality for any city and state regulations.
Yes! Be mindful of air flow when deciding where to place the chiller. Overhangs can prevent air rejection, so Vertical Air series chillers should not be placed underneath them. Similarly, there should be no obstructions in front of the exhaust side of horizontal discharge units. Refer to your chiller manual for more detail.
This varies depending on the time of year. A typical lead time is 4-6 weeks.
Maintenance is minimal. Measure the glycol mixture quarterly throughout the year. Keep the condenser clear of obstructions and free of leaves and debris. It is good to establish a relationship with a qualified technician in your area. Yearly inspections after the first or second year are a good idea. G&D partners with multiple service companies throughout the country if you need a recommendation.
Learn more about glycol chiller maintenance, read the full article here.
We will fully design and size your supply and return mainline with the purchase of your chiller. We work directly with you and your team to ensure that the system is installed correctly. Contact us directly to discuss our pre-insulated piping options.
There are many variables involved with the sizing of a Glycol Chiller. We have a team ready to ask you the questions to determine your precise requirements.
British Thermal Unit: The amount of energy needed to cool or heat one pound of water by one degree Fahrenheit.
A refrigerated ton is a measurement of BTUs, where 1 ton = 12,000 BTU/hr. It is important to know how many BTUs a particular chiller can produce at your required leaving glycol/water temperature.
NO. This is where it can sometimes get confusing. At air conditioning temperatures a 5 HP compressor can produce close to 5 tons of cooling. However, if your application requires a lower glycol fluid temperature, that same 5 HP compressor will produce less BTUs/tons. This means more horsepower is required to produce 5 tons at those lower temperatures..
For our medium temperature chillers, we typically recommend a 26° to 30° Fahrenheit setpoint.
For our low temperature chillers, we generally recommend a -20° to -50°F setpoint.
For our high temperature chillers, called scroll chillers, we generally recommend 55° to 60°F setpoint
For our medium temperature chillers, we recommend using schedule 80PVC, copper, stainless steel and Georg Fischer “Cool Fit.”
For our low temperature chillers, we recommend using copper, stainless steel, or Georg Fischer “Cool Fit.”
G&D Chillers recommends using condenser coil cleaner to clean your condenser quarterly. We recommend using any of the Nu-Calgon products but specifically “Nu-Calgon Special HD” as this ensures that you get proper air flow though the condenser and ensures the refrigeration pressure is staying within specifications.
All our stationary G&D Chillers now come with a one-year free remote monitoring subscription. This system sends SMS text alerts for any abnormal conditions. The web-based interface allows you to pull up the information on your phone to help keep operations running smoothly. If your unit has a Carel PLC we can set up remote monitoring. For more information, start here and call us for details.
If you have an existing chiller out in the field, we can activate Simple Monitoring Solution (SMS) which is a web-based interface allowing you to log in to check chiller function at any time. Check out a video here from our website
Any of our chillers that have a Carel PLC can communicate via Modbus TCP.
Feel free to give us a call or email info@gdchillers.com for the Read/Write variables
G&D Chillers does not use proprietary parts when building your glycol chiller. Because of this any component that you may need should be readily available. You can email info@gdchillers.com to request a spare parts quote.