shane rowles
New Member
I am not a plumber so I paid to have my Bosch Greenstar 151 Combi floor model installed. I converted from a single zone coal boiler to a three zone gas boiler. The original plan was to add the Bosch Greenstar FW200 Weather Compensation Boiler Control and outdoor sensor to make my new install as efficient as possible.
Since the FW200 control is not compatible with the CZM100 Zone control, and the CRC thermostats they used a Taco zone control and Honeywell on/off thermostats.
The problem is the outdoor reset never got installed and when I asked about it I was told that the boiler that was installed was a new model and the only thing the outdoor reset did was shut the boiler off when the outdoor temp went above 70F. They claim that there is a sensor on the return water inside of the boiler and that is how it decides on how to modulate for the most efficient water temp. I don't know enough to know if this is true or not and I feel like I now just have a smart boiler using simple on/off controls and I am not getting the most efficiency out of my boiler.
Should I still push to get the FW200 and outdoor sensor or push to convert the Taco zone controller and Honeywell thermostats over to the Bosch CZM100 zone controller and the CRC200 and CRC100 room controllers? Any and all help would be greatly appreciated. Thanks
Boiler name is Bosch Greenstar 151 combi floor model
Boiler model is KWB 42-3 A23 S3123
model number is 7 733 600 084
Since the FW200 control is not compatible with the CZM100 Zone control, and the CRC thermostats they used a Taco zone control and Honeywell on/off thermostats.
The problem is the outdoor reset never got installed and when I asked about it I was told that the boiler that was installed was a new model and the only thing the outdoor reset did was shut the boiler off when the outdoor temp went above 70F. They claim that there is a sensor on the return water inside of the boiler and that is how it decides on how to modulate for the most efficient water temp. I don't know enough to know if this is true or not and I feel like I now just have a smart boiler using simple on/off controls and I am not getting the most efficiency out of my boiler.
Should I still push to get the FW200 and outdoor sensor or push to convert the Taco zone controller and Honeywell thermostats over to the Bosch CZM100 zone controller and the CRC200 and CRC100 room controllers? Any and all help would be greatly appreciated. Thanks
Boiler name is Bosch Greenstar 151 combi floor model
Boiler model is KWB 42-3 A23 S3123
model number is 7 733 600 084