Thursday, October 16, 2014

Changes to Bosch Therm Gas Tankless Water Heaters

Bosch is always upgrading their products and coming out with new and better models and changes.  Below are a few new changes to the Bosch Therm gas tankless water heaters.

The current silver-gray cover will be changing to Bosch white. This change is consistent with the Bosch residential product visual branding, such as with Greenstar, Greensource, Greentherm, and Therm.  Once the inventory of the units with silver covers is sold then Bosch will start changing over to the new white covers.

Warranty updates
For recirculation applications:
The C950ES, C1050ES and C1210ES heat exchanger warranty has been improved to 10 years for the following applications:
- Controlled recirculation applications
- Combination DHW and space heating applications
This warranty statement takes affect with products produced since April 2014 (FD 420). C950ES, C1050ES, and C1210ES products produced prior to April 2014 (before FD 420) will follow the previous warranty statement.




Wednesday, October 15, 2014

New changes to the Bosch Greentherm C950ES & C1050ES

Bosch is always making changes to their products to help improve performance.  Below are a few changes that have recently been approved for the Bosch Greentherm C950ES & Bosch Greentherm C1050ES tankless water heaters.

There have been a lot of new accessories added and approved for the heaters:
Accessories (Bosch part #)
• Concentric termination kit 3"/5"PVC (196006)
• Concentric vent kit 80/125 PP (7738003210)
• Concentric Up and Out kit (7 738 003 210)
• Neutralizer Kit (7738001483)
• Isolation Valve Kit (7738003449)
• Optional wireless remote control to operate with the appliance
(7709003213)
• Cascading kit (7 709 003 962)
• Outdoor kit (7709003913)
• Concentric termination kit 3"/6" PVC (196016)
• Exhaust/Intake bird screen (L2594)
• Condensate drain tee (196061) [included with Concentric
termination kits]
• Pipe Cover (PTPCES)
• High temperature kit (7736500074)
• Recess box kit (7736500043)
• Pressure relief valve (7 738 001 152)

The Bosch Greentherm C950ES & C1050ES can now be vented using 2" PVC/CPVC and must use the twin pipe system for this application.  Please see the venting section in the installation manual for more details.

The Front cover for the Bosch C950ES & C1050ES is changing from Silver to White.  This will be in effect for all the Greentherm and Therm units.

The Thermal Efficiency for the Greentherm C950ES heater is 94% with an Energy Factor of .95.
The Thermal Efficiency for the Greentherm C1050ES heater is 96% with an Energy Factor of .95.

Warranty updates
For recirculation applications:
The C950ES & C1050ES heat exchanger warranty has been improved to 10 years for the following applications:
- Controlled recirculation applications
- Combination DHW and space heating applications
This warranty statement takes affect with products produced since April 2014 (FD 420). C950ES & C1050ES products produced prior to April 2014 (before FD 420) will follow the previous warranty statement.


Thursday, September 11, 2014

New 2015 Energy Factor Changes affecting Bosch Tankless Water Heaters

A major change to the water heater market is on the way, creating both challenges and opportunities for plumbing, heating and HVAC contractors, designers and engineers.

New energy efficiency mandates from the U.S. Department of Energy (DOE) will take effect on April 16, 2015. They require higher energy factor (EF) ratings on virtually all residential water heating products including gas-fired, oil-fired, electric, tabletop, instantaneous gas-fired and instantaneous electric.  Tankless systems already exceed these EF requirements, and all other water heating products manufactured before the DOE mandates take effect can still be bought and installed after the changeover date.

“It’s important for contractors to become familiar with the new rules and the technology options,” said Ralph Perez, director of product management, A.O. Smith, in an interview with Perspective Media. “There are products available that comply with the 2015 regulations, but they are generally not yet in the mass market.”

While all affected models will see an increase in the EF requirement, the most dramatic changes are in larger capacity models (see accompanying chart).  That’s because the only technologies that now meet the EF requirements over 55 gallons are electric heat pump water heaters and high-efficiency condensing gas water heaters.
The Bosch gas fired tankless water heaters affected by the new energy factor are the Bosch 330PN LP & NG, Bosch 520HN LP & NG and the Bosch 520PN LP & NG.


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 recirculation 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
PVC-DWV ANSI/ASTM D2665
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.