Tuesday, August 5, 2014

Using Bosch Tankless for Domestic Hot Water Recirculation

Bosch tankless water heaters can be used in recirculation applications and there are many different set ups for this such as direct recirculation and indirect recirculation.  Certain models of the Bosch tankless water heaters are approved for direct recirculation and are listed below.  Please be aware that the heat exchanger warranty of 15 years will be reduced to 3 years for direct recirculation.  This is stated in the warranty section of the installation manual.   All of the Bosch tankless water heaters can be set up for an indirect recirculation application in conjunction with a mini tank, recirculation pump and aquastat as described in the image below. The warranty for reciculation through an indirect mini tank and not directly through the heater is 15 years.

Bosch tankless water heaters approved for direct recirculation:
Bosch Therm C1210ES
Bosch Therm C1210ESC (Commercial Unit)
Bosch Greentherm C1050
Bosch Greentherm C950
Bosch Therm 940ES
Bosch Therm 830ES

Diagram for Recirculation Application:
(This schematic is for illustration only and must not be used for actual installation without appropriate engineering and technical advise from a properly licensed professional in the locality where the installation is made).

Wednesday, July 30, 2014

Bosch Tankless Water Heaters Used for Solar Thermal Applications

Certain models of the Bosch tankless water heaters are approved and designed for using Solar Thermal. Solar Thermal applications should be set up in conjunction with an indirect tank to maintain a more consistent temperature but the heater can be used for direct solar preheated water.  The maximum temperature for the solar preheated water into the Bosch tankless water heater is 140 degrees F.  The Bosch tankless water heaters that are approved for Solar preheated water are listed below:

Bosch Therm 830ES
Bosch Therm 940ES
Bosch Greentherm C950ES
Bosch Greentherm C1050ES
Bosch Therm C1210ES
Bosch Therm C1210ESC

Wednesday, July 2, 2014

Bosch Greentherm C1050ES & C950ES Venting Limitations

The Bosch Greentherm C1050ES and the Bosch Greentherm C950ES gas tankless water heaters have minimum and maximum venting lengths for the exhaust and intake air.  Please review the specifications below for the two heaters and the size, material and lengths that can be used.

Vent options
The Greentherm C1050ES & C950ES must comply with the following material for exhaust and intake air.

PP common vent
PP twin pipe
PVC schedule 40 ANSI/ASTM D1785
CPVC schedule 40 ANSI/ASTM F441
ABS-DWV schedule ANSI/ASTM D2661

The Greentherm C1050ES & C950ES have many different ways they can vent such as horizontal or vertical and can use different types of material for venting and intake air.  There is the Polypropylene up and out concentric vent kit, Polypropylene common vent system if you are cascading more than one unit and up to 4 units, PVC Concentric vent kit, you can do a twin pipe PVC vent, etc.

Maximum vent lengths for exhaust, intake air and use of elbows  for the Greentherm C1050ES & C950ES are listed below:

Thursday, June 26, 2014

Global Pro Tankless Supply 4th of July Sale

Global Pro Tankless Supply is pleased to announce our 4th of July Sale that will be running from June 26th through July 11th 2014 at midnight ET. Everything will be marked way down for this special sale period.  Global Pro Tankless Supply will meet or beat any other authorized distributor's price as part of this promotion.  Global Pro Tankless Supply would need to verify the competitors discounted price either in e-mail or through a website.

Global Pro Tankless Supply will be knocking prices down on all our Bosch Gas tankless water heaters, electric tankless water heaters, Bosch Greenstar Boilers and Combi Boilers. No coupons are necessary as our prices have already been reduced on our web site at www.prowaterheatersupply.com

We also have special July 4th sale pricing on our Humphrey gas lights & accessories, Danfoss electric in-floor heating mats, Z-Vent Stainless Steel Venting and Virgo water filtration systems.

Please feel free to e-mail us with questions at info@prowaterheatersupply.com  or call us at 866-289-4652. We are open 24x7 to assist you in selecting the best product for your needs.


Tuesday, June 10, 2014

Bosch Tankless Water Heater Warranty

Bosch Thermotechnology provides the warranty for all of its Bosch tankless water heaters, including gas, propane and electric tankless water heaters in addition to the electric mini-tank water heaters.

You can find the full details of these Bosch product warranties at: http://www.bosch-climate.us/support-center/product-warranty.html

At this link you will also find the Bosch warranties for their Geothermal Heat Pumps, Bosch Greenstar Boilers, Stainless Steel Storage Tanks, and Solar products.

The warranty is always provided by the manufacturer, so you can contact Bosch directly with any warranty questions. Bosch also provides the warranty for all of its replacement parts.

Call us at 866.289.4652 if your Bosch water heater, boiler, storage tank or replacement part are out of warranty and in need of replacement. We offer Next Day Air, Second Day Air, and Ground shipping options for all of our Bosch products.

Monday, June 9, 2014

Replacing an Aquastar 240FX with Bosch Therm 830ES

The Aquastar model 240FX was a unit that was distributed by Controlled Energy Corporation (CEC) many years ago.  The 240FX was manufactured by Takagi and was capable of 2 major applications at one time. The Aquastar 240FX was a 165K BTU unit, took 4" single wall sealed galvanized or 4" single wall stainless steel venting.  The 240FX took it's combustion air from the area where it was installed.  The 240FX could sit right on the ground as the water and gas connections came out the left side of the unit.  Wall mounting was also an option.  The 240FX was suppose to be vented out the sidewall of the home for a maximum of 15' using the FXHood as the termination.  The Aquastar 240FX has been obsolete for some time and now most of the parts are no longer made also.

The closest replacement for the Aquastar 240FX is now the Bosch Therm 830ES.  The Bosch 830ES is a 175K BTU unit and is good for 2 major applications at one time.  The 3/4" water and gas connection are on the bottom of the unit vs the left side of the Aquastar 240FX.  The venting on the 830ES must be either 3" or 4" stainless steel single wall venting (AL29-4C) venting up through the roof or out the sidewall.  There is a vertical vent kit, ES VVT vertical vent kit avalable and also a sidewall vent kit, AQ3ES sidewall vent kit for venting out the side of the home.  The intake air for the 830ES is taken from the outside also using 3" PVC and should be taken from the same wall or roof the exhaust is going out through.  Please refer to the link above for more information on the Bosch Therm 830ES or call us at 866-289-4652 with questions.

Tuesday, May 20, 2014

Freeze Prevention Kit for Bosch Therm 520PN & 520HN Models

The Bosch Freeze Prevention Kit, part number 7709003775 is sold as an accessory and is approved for the Bosch Therm 520PN & 520HN heaters.  The Freeze Prevention Kit is designed to provide protection for the water heater down to approximately 5 degrees F for short term conditions only.  It will not protect the appliance in areas where the temperature is routinely expected to be below freezing.

The Freeze Prevention Kit will not protect plumbing outside the appliance from freezing.  Precautions should be taken to prevent this.

For more information and to order the Bosch Freeze prevention kit please call us at 866-289-4652.