Items Included with Bosch Greenstar Floor-Standing (FS) Boilers

This is to list the items that are included with the Bosch Greenstar Floor-Standing (FS) Straight Boilers and FS Combi Boilers.  The Bosch Greenstar FS boilers already have the main controller integrated into the top of the boiler itself.  See the list below of the items that come with the boilers and also the list of the optional accessories.

Included with Bosch Greenstar FS Straight Boilers
Installation manual
Adapter for connection of a Low Water Cutoff (LWCO)
Gas conversion kit
DHW tank temperature sensor (for use with indirect tank)
Flue adapter

Included with Bosch Greenstar FS Combi Boilers
Installation manual
Adapter for connection of a Low Water Cutoff (LWCO)
Gas conversion kit
Flue adapter

Optional Accessories for Greenstar FS Boilers (not included)
FW200 Weather compensation control
CRC100 or CRC200 room thermostats
CZM100 Zoning module
Optional concentric vent kit available for horizontal direct vent terminations
ICM control for cascading up to 4 boilers

New Bosch CT100 Wi-Fi Enabled Smart Thermostat Control

Global Protankless Supply is pleased to announce that Bosch is now making a CT100 Wi-Fi enabled smart thermostat for all the Bosch Greenstar wall-hung and floor standing straight boilers and combination boilers.  The Smart control is also good for the Buderus GB142, GB162 series condensing boilers.  The Bosch Control CT 100 connects to your boiler’s EMS BUS connection only. Therefore it can only be used for installations with a single zone. The CT100 wi-fi enabled smart controller cannot be used with the Bosch CZM100 Zone Manager to control multiple zones.

*  Bosch CT100 Thermostat Smart Control #7736700988
*  Back Plate for Bosch Smart Control #87377041690

Bosch Smart Control combines a touch screen programmable thermostat with Wi-Fi connectivity and intuitive free mobile App to allow busy households to monitor and adjust home comfort and energy consumption while on the go. Bosch CT100 can monitor and adjust home heating and hot water conditions, boiler design settings and even energy consumption via mobile App anywhere in the world via a Wi-Fi or cellular connection.

Features & Benefits:
*  Communicates with Bosch Greenstar, Buderus GB142, GB162 series condensing boilers; not just On/Off control
*  Easy to Install - 2 wire installation (use existing wires)
*  Controls space heating and domestic hot water
*  Electrically powered by Bosch boiler
*  Remote control from anywhere in the world
     o Connects to home WiFi network
     o Confidentially stores data
     o Self-learning functionality
*  Free Apple or Android App (up to 5 mobile users per control)
*  Product registration via App
*  Change home and away times with intuitive scheduling
*  Set energy goals with gas usage data Informative “How to Videos” in App and online

Please call Global Protankless Supply to with further questions and to order this product at 866-289-4652.

Turn Down Ratios for Bosch Greenstar Straight & Combi Boilers

The turn down ratio can be calculated by dividing the input rating by the minimum input. See below for the appropriate turn down ratio for each boiler in the Greenstar series. The figures outlined in this bulletin are calculated using NG inputs and rounded to 2 decimal places.

Turn down ratios for Greenstar Condensing Combination (Combi) Boilers:

Bosch Greenstar Wall-Hung Combi 100 - ZWB28-3A23S3123

•    Part number: 7738 100 002
•    Input Rating: 100,800 BTU
•   Minimum Input: 24,600 BTU
•    Turndown Ratio: 4.1 : 1

Bosch Greenstar Floor-Standing (FS) Combi 100 - KWB28-3A23S3123

•  Part number: 7-733-600-082
•  Input Rating: 100,800 BTU
•  Minimum Input: 24,600 BTU
•  Turndown Ratio: 4.1 : 1

Bosch Greenstar Wall-Hung Combi 131 - ZWB35-3A23S3123

• Part number: 7738 100 256
• Input Rating: 131,900 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 3.7 : 1

Bosch Greenstar Floor-Standing (FS) Combi 131 - KWB35-3A23S3123

•  Part number: 7-733-600-083
•  Input Rating: 131,900 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 3.7 : 1

Bosch Greenstar Wall-Hung Combi 151 - ZWB42-3A23S3123

•  Part number: 7713 331 041
•  Input Rating: 151,600 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 4.2 : 1

Bosch Greenstar Floor-Standing (FS) Combi 151 - KWB42-3A23S3123

•  Part number: 7-733-600-084
•  Input Rating: 151,600 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 4.2 : 1

Turn down ratios for Greenstar Condensing Straight Boilers:

Bosch Greenstar Wall-Hung 57 - ZBR16-3A23S3123

•  Part number 7712 231 416
•  Input Rating: 57,200 BTU
•  Minimum Input: 12,900 BTU
•  Turndown Ratio: 4.4 : 1

Bosch Greenstar Floor-Standing (FS) 57 - KBR16-3A23S3123

•  Part number 7-733-600-077
•  Input Rating: 57,200 BTU
•  Minimum Input: 12,900 BTU
•  Turndown Ratio: 4.4 : 1

Bosch Greenstar Wall-Hung 79 - ZBR21-3A23S3123

•  Part number: 7738 100 322
•  Input Rating: 79,200 BTU
•  Minimum Input: 24,600 BTU
•  Turndown Ratio: 3.2 : 1

Bosch Greenstar Floor-Standing (FS) 79 - KBR21-3A23S3123

•  Part number: 7-733-600-078
•  Input Rating: 79,200 BTU
•  Minimum Input: 24,600 BTU
•  Turndown Ratio: 3.2 : 1

Bosch Greenstar Wall-Hung 100 - ZBR28-3A23S3123

•  Part number: 7712 231 415
•  Input Rating: 100,800 BTU
•  Minimum Input: 24,600 BTU
•  Turndown Ratio: 4.1 : 1

Bosch Greenstar Floor-Standing (FS) 100 - KBR28-3A23S3123

•  Part number: 7-733-600-079
•  Input Rating: 100,800 BTU
•  Minimum Input: 24,600 BTU
•  Turndown Ratio: 4.1 : 1

Bosch Greenstar Wall-Hung 131 - ZBR35-3A23S3123

•  Part number: 7712 231 414
•  Input Rating: 131,900 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 3.7 : 1

Bosch Greenstar Floor-Standing (FS) 131 - KBR35-3A23S3123

•  Part number: 7-733-600-080
•  Input Rating: 131,900 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 3.7 : 1

Bosch Greenstar Wall-Hung 151 - ZBR42-3A23S3123

•  Part number: 7712 231 413
•  Input Rating: 151,600 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 4.2 : 1

Bosch Greenstar Floor-Standing (FS) 151 - KBR42-3A23S3123

•  Part number: 7-733-600-081
•  Input Rating: 151,600 BTU
•  Minimum Input: 36,000 BTU
•  Turndown Ratio: 4.2 : 1

Bosch Greenstar Intelligent Cascade Module (ICM) #7719003528

Bosch is always working on new ways to improve their products and has recently came out with an Intelligent Cascading Module (ICM) part #7719003528 for the Bosch Greenstar gas-fired wall-hung boilers.  The ICM modules are designed to control cascade systems.  A cascade system is a heating system where several smaller boilers are connected in parallel to achieve higher output.  The Bosch ICM modules are only suitable for controlling Bosch Greenstar boilers with BUS-enabled Heatronic 3 systems.

One Bosch ICM module can control up to 4 Greenstar boilers.  By conecting up to 4 ICM modules, up to 16 boilers can be linked to form a single cascade.  Depending on the heating system controls used, a cascade system with up to 4 or up to 16 boilers can be created.  The maximum number of boilers that can be connected and the number of ICM modules required for the different systems are shown in the table below.

Model Numbers Pertaining to the Bosch Greenstar Combi and Straight Boilers

Below is a table describing the model numbers that pertain to the Bosch Greenstar gas-fired wall-hung boilers and combination boilers.

Z - Central heating appliance
W - DHW heating
B - Condensing technology
R - Constant temperature control
16 - Output up to 54,600 BTU/hr (16 kW)
21 - Output and DHW output up to 71,600 BTU/hr (21 kW)
28 - Output and DHW output up to 95,500 BTU/hr (28 kW)
35 - Output and DHW output up to 119,400 BTU/hr (35 kW)
42 - Output and DHW output up to 143,300 BTU/hr (42 kW)
-3 - Version
A - Fan-supported appliance
23 - Natural gas (NG) conversion to Liquid Propane (LP) comes with boiler

So if you wanted to reference model number "ZWB42-3" this would be the model number for the Bosch Combi 151 Gas-Fired Wall-Hung Boiler for space heating and domestic hot water (DHW).
Z - Central heating appliance
W - DHW heating
B - Condensing technology
42 - Output and DHW output up to 143,300 BTU/hr (42 kW)
-3 - Version

All Greenstar boilers and Combi units are fan assisted "A" and they all come preset for Natural Gas NG "23" but also come with the conversion kit for Liquid Propane LP.

Conversion:
Model #               Description
ZBR16-3             Bosch Greenstar Wall-Hung 57 Boiler
ZBR21-3             Bosch Greenstar Wall-Hung 79 Boiler
ZBR28-3             Bosch Greenstar Wall-Hung 100 Boiler
ZBR35-3             Bosch Greenstar Wall-Hung 131 Boiler
ZBR42-3             Bosch Greenstar Wall-Hung 151 Boiler
ZWB28-3            Bosch Greenstar Wall-Hung Combi 100 Boiler
ZWB35-3            Bosch Greenstar Wall-Hung Combi 131 Boiler
ZWB42-3            Bosch Greenstar Wall-Hung Combi 151 Boiler

New 95% AFUE Rating for Bosch Greenstar Gas Fired Wall Hung Boilers

Bosch Thermotechnology has recently announced that the Bosch Greenstar models have been tested and certified by AHRI with a 95% AFUE rating. The wall mounted gas fired condensing boilers feature the best of German engineering, designed for easy service and are backed with the best warranty in the industry. The Greenstar is available in both heat only and combi models ranging from 57-151 MBH.  Available for Natural Gas or LP - one of these boilers will be a great fit for your application.

The Bosch Greenstar boilers are certified ENERGY STAR products, and with the AFUE rating of 95% they are eligible for the $150 Federal Tax credit for natural gas, propane, or oil furnace or hot water boiler. These boilers are also eligible for many state, local and utility rebates, such as Gas Networks in Massachusetts and Philadelphia Gas Works. Visit the DSIRE web site to find rebates in your area.


Haven't installed a Bosch Greenstar boiler? Now is a great time to buy with excellent rebates for your customers and for you - the Bosch Greenstar models are eligible for a $100 contractor rebate through the Bosch Thermotechnology Summer Sizzler Program which runs until September 15. View these products in the AHRI directory.  Please note the $100 contractor rebate is done through Bosch Thermotechnology and not through Global Protankless Supply.  Please call Global Protankless Supply for contractor pricing on units and accessories.

Thanksgiving Day Sale on Greenstar Boilers & Tankless Water Heaters

Pro Water Heater Supply is excited to offer special Thanksgiving Day / Black Friday / Cyber Monday sale pricing on all Bosch Tankless Water Heaters and all Bosch Greenstar Boilers.

We carry the full line of all current Bosch tankless water heaters, including the Bosch 1050ES, Bosch 1210ES and the very popular Bosch 520PN / 520 HN units. The Bosch 520 series heaters are available in both natural gas and propane and require no electricity!

We also have special pricing on the very popular Bosch 660EF indoor tankless water heaters and the Bosch 660EFO outdoor tankless water heaters. Did you know that we are the only source for the correct Bosch 660EF Adaptor that is needed for all Bosch 660EF installations?

In addition to the full line of current Bosch tankless water heaters we are the exclusive outlet for prior model units, such as the Bosch Integra 500 (199,000 BTU Condensing) and the Bosch Evolution 500 (199,000 BTU Non-condensing). We still have a large quantity of these Clearance Heaters and they are priced Thanksgiving Day, Black Friday and Cyber Monday to move!

Looking for a Bosch Greenstar Combi 151 Boiler or Bosch Greenstar Combi 100 Boiler? We have these and the other Greenstar straight boilers for sale at a deep discount promotional price. The Bosch Combi boilers are our most popular wall-hun condensing boilers as they provide for both space heating and domestic hot water (DHW).