Domestic Non Condensing 80 – 85% Efficiency
Commercial Domestic Water Heaters tend to only have two common configurations. There tank type water heater or a water heater and a separate storage tank. Both have benefits and drawbacks and both will work in majority of applications. Goes Heating Systems is happy to educate anyone on our selection process. We find if people understand more about our products it makes selection, install, and maintenance easier for everyone. Whichever selection is made we want the equipment to operate as long and efficiently as it can. Below is a brief description of the system to help start on the selection process.
A tank type water heater is very compact design and doesn’t take much to pipe it in. However the drawback is that if anything happens to the tank or heat exchanger a whole new unit usually is required. There are many manufactures and designs of this type of heater. So knowing a reliable brand can be tough. We would recommend looking at how long the warrantable life of the manufacture lets you know if they will stand behind their product. Also having a representative that understand hot water heaters and has been in the business for 30+ years to back you always helps. The tank type water heater Goes Heating Systems carries start off at 15 year warranty. Majority of manufactures don’t start off with a 15 year warranty they are around 1-3 years for commercial products.
A water heater and a storage tank applications advantages are each part is accessible so if one part were to be serviced or changed out it can be replaced. Also it allows for more variation on tank and boiler size combinations. However more piping is required on install and since each part is a different manufacture the customer needs to know each has a different warranty. Installation is important for boiler function and longevity. Also depending on application the cold water inlet needs to be properly installed to insure the boiler doesn’t directly take cold water and condense. If there are any questions on piping we will be glad to answer just let us know.
Non Condensing Water Heaters are less efficient but they tend to be less cost upfront. However they are the baseline and will not give any payback or value to the building. The drop in efficiency allows the venting to be CAT II. In some cases vent can remain the same. However in majority of cases with retrofit application the venting is majority of the time too large to accommodate new equipment. So new venting will be required to insure proper operation. In order for the boiler to not condense the water heater needs to either be design to not allow the time for the heat exchanger to absorb the heat and condense or have the tank at a temperature range where condensing will not happen. 140 degrees F is the lowest the tank should ever be set in all applications this is to be able to kill any legionella bacteria that can potentially be in that water. Water stored below this temp will not kill the bacteria. Legionella is a growing and serious concern and is life threating. Goes Heating Systems always values people safety as the top priority. With 140 degree F temperature water supply a point of source mixing valves or a central mixing station is required to avoid scalding people. Another concern is if temperature drops below 140 degrees F in the tank the boiler has the potential to condense. Remember these are non-condensing units and not design to handle condensate and if left under this condition the boiler will fail.
Please see below on are options for non-condensing water heaters.
RBI Water Heater and Storage Tank