Friday, January 22, 2021

Negative Pressure on Bosch Gas Sealed Combustion Tankless Water Heaters

 All of the new and some of the older Bosch gas tankless water heaters are all sealed combustion units.  This means the unit is sealed in the combustion chamber and thus the unit will have a twin pipe system for the exhaust and intake air.  The sealed combustion creates a positive pressure and keeps any cold air from entering and causing damage to the heater.  The sealed combustion units are also sealed and require in most situations that the intake air be taken from outside the home so as to not be shortened by inadequate combustion air.  The Bosch sealed combustion units must "NEVER" be operated with the front cover off the unit as this will create a negative pressure and will allow cold air being drawn down the exhaust pipe and could cause major damage and freezing in some areas to the heat exchanger.

Below is an image of a Bosch sealed combustion unit being vented with a twin pipe system horizontally out the sidewall.  This would be the same for a vertical installation through the roof.  When terminating through the sidewall or through the roof of a home always remember to keep at least 3' apart between the intake air vent and the exhaust air vent so there will be no cross contamination.

These are the Bosch gas tankless water heaters with sealed combustion.  250SX/250SXO/635ES/635ESO/2400E/2400ES/2700ES/Evolution500/Integra500/940ES/C1210ES/C1210ESC/ProTL175/ProTL199/ProTLC175/ProTLC199/T9800SE 160/T9800SE 199/T9900SE 160/T9900SE 199/T9900iSE 199

Please visit for more information or call us at 866-289-4652.

Tuesday, December 29, 2020

Bosch Greenstar Pro Series Combi 100P & Combi 151P Boilers

Global Protankless Supply now carries the Bosch Greenstar Pro Series Combi 100P and the Combi 151P boilers.  The Pro series combination boilers are a special line of boilers for contractors.  These Pro series combination boilers are sold at a cheaper cost and do not include some items the original Bosch Greenstar combination boilers contain.  These units are designed for heating and DHW applications.  Please see below for what is and is not included with the Pro Series Combi 100P & Combi 151P boilers.  

Bosch Greenstar Pro Series

Product offered in 100 and 151BTU Combi

CRC200 thermostat not included

Concentric vent adapter included

Expansion vessel not included

LP conversion kit included

Wall and piping bracket included

Warranty – limited life time heat exchanger

5 years parts, 1 year labor

Please call Global Protankless Supply at 866-289-4652 for further questions or to purchase a Bosch Greenstar Pro Series Combination boiler.

Tuesday, October 20, 2020

Phase-out of Bosch SSB Residential platform boilers SSB 85, 120 & 160

Global Protankless Supply would like to announce that Bosch Thermotechnology has discontinued the full line of Stainless Steel boilers.  The models that have been discontinued are the SSB 85, SSB 120 and the SSB 160.  These boilers are replaced with the Bosch Greenstar Floor-Standing boilers.

Contractors who are looking to purchase an SSB Residential model should use the chart below to reference which Greenstar boiler model is the most suitable alternative. The primary difference is the heat exchanger material, which is stainless steel for the SSB and cast aluminum for the Greenstar, as well as minor variations in the BTU inputs.

Please visit this link to view the full line of Bosch Greenstar boilers.

Call us at 866-289-4652 for further questions or to place an order for a Bosch Greenstar boiler.

Thursday, October 1, 2020

New Bosch Greenstar Wall-Hung Boiler Manifold Now Available

Global Pro Tankless Supply is pleased to announce Bosch Thermotechnology is now carrying the new Bosch Greenstar Boiler Manifold.  The Bosch quick connect manifold is designed for all Bosch Greenstar Wall-Hung boilers.  The Bosch manifold can be used for both Greenstar Wall Hung straight boilers and also Greenstar Wall-Hung combination boilers.  This boiler manifold connector will not work on the Bosch Greenstar Floor-Standing boilers.  If using on the Bosch Greenstar combination boiler you will want to make sure the quick manifold connector is installed as to not interfere with the DHW connections.  The quick connect manifold is easy to install and saves time.  Below are some of the specifications for the boiler manifold.

Greenstar Wall-Hung boiler manifold specifications:

1.  1”NPT boiler connections to fit all Greenstar Wall boilers
2.  1.25”sweat system connections
3.  Service valves enable the boiler to be isolated from the heating system for maintenance
4.  Custom designed for plug-and-play installation with Greenstar Wall boilers
5.  Di-electric unions included for corrosion resistance

For more information or to place an order please call Global Pro Tankless Supply at 866-289-4652.

Wednesday, September 16, 2020

Installing Bosch Tronic 6000C WH17 & WH27 in Canada

Global Pro Tankless Supply is an Authorized Bosch Distributor for all Bosch gas and electric tankless water heaters.  The Bosch Tronic 6000C WH17 & WH27 are whole house electric tankless water heaters.  The Bosch WH17 & WH27 can be installed in Canada and are CSA approved.  For installation in Canada, a single electrical breaker is used.  For the Bosch Tronic 6000C WH17 it is required to use a single 80 amp breaker.  For the Bosch Tronic 6000C WH27 it is required to use a 120 amp breaker.  

For installation in Canada please keep in mind the temperature rise needed as the Bosch WH17 will produce a 45 degree temperature rise at 2.6 GPM and the Bosch WH27 will produce a 45 degree temperature rise at 4 GPM.  See the image below that shows the electrical terminal block for wiring in Canada.  Please refer to the installation manual for proper installation.

Please call Global Pro Tankless Supply at 866-289-4652 for further information or to place an order.

Wednesday, February 5, 2020

Greentherm 9000 series heater promotion

Global Protankless Supply is pleased to announce Bosch Thermotechnology is currently running a special promotion on the new Bosch Grentherm 9000 Series tankless water heaters.  Below are special details of the promotion and how to register your new Bosch Greentherm tankless water heater.

Bosch Greentherm Tankless Water Heater Promotion details:
Every purchased and registered Bosch Greentherm Tankless Water Heater between February 1, 2020 and April 30, 2020 will be eligible for a $75 Visa Card. Valid registrations required for qualifying Bosch Greentherm Tankless Water Heaters.

To claim your reward:
Online registration is fast, easy and there is no paperwork to mail-in! On-line registration is required to claim your $75 Visa Card. Once successfully entered you will receive an e-mail confirmation of your promotion submission – this e-mail only confirms receipt of your submission – not approval. Please, give us up to 10 business days (after confirmed registration) to process your reward.

Be sure to have the following required information before starting your registration:
▸ Valid e-mail address – orientations about how to get the Visa Card will be sent to the e-mail provided
▸ Product and model name/number (use pull-down menu below)
▸ Your wholesaler’s invoice number and an electronic copy to upload.
▸ Complete serial number – As a requirement of the program serial numbers will be validated – so it is important that you get the serial number from the unit. Serial numbers are 18-27 characters, do not rely on the serial number on your invoice. Incomplete or invalid serial numbers will not be accepted.
▸ Follow the on-line instructions. Be sure to click “Submit” when you are done.
▸ All submissions will receive a confirmation e-mail. Please check it for completeness. If you find an error please e-mail the contact provided. If you do not receive the confirmation e-mail please check your spam folder.
▸ All submissions must be entered on-line by April 30, 2020.

For further questions please call Global Protankless Supply at 866-289-4652 or you can click this link Greentherm 9000 series heater promotion site

Tuesday, January 21, 2020

Best Condensing Tankless Water Heater - Bosch vs the Competition

Every major tankless water heater manufacturer has a 199,000 BTU condensing tankless water heater. The reason: anything over 200,000 BTUs will not qualify for the coveted Energy Star label.

The entire tankless industry has moved from non-condensing to condensing tankless water heaters due to the high efficiencies and low cost for PVC or polypropylene venting. So, how do you pick the best condensing tankless water heater from such a crowded field?

Bosch has long been the industry leader in condensing tankless water heater technology. And right now is a very exciting time to purchase a Bosch Tankless Water Heater because of the current offerings that include water connections on either the top or the bottom of the water heater.

Navian offers a few condensing models and are high efficiency units but all have the water connections on the bottom making it a lot more difficult to replace a standard tank heater as the water connections are on the top of the tank.  Some of the Navian condensing models are the NPE-a and the NPE-S series.

Rinnai has a few high efficient condensing models also such as the RUCS series but also have the same bottom water connections making it more difficult to replace a standard tank heater.

Most installers will go with the Bosch Greentherm 9000 series for new installations because of the time saved with top water connections.

For further questions on the new Bosch Greentherm 9000 series units please call Global Protankless Supply at 866-289-4652