Evohome Worcester Bosch Settings Help
Posted: Mon Jan 23, 2023 9:39 pm
Hi, I have had Evohome installed for a few years, it's been quite solid and never really had any issues.
Anyway, we have switched over to a smart meter recently and I noticed our high gas usage and wanted to check the Honeywell was working as it should, the chap who fit the boiler didnt really know much about it. I know it would have been better to get a connected specialist in to install the boiler and check it over but I have found them difficult to get hold of and not really interested unless they installed the evohome system, the original Evohome installer has gone missing. So I am stuck between a rock and a hard place at the moment and left to try and find out for myself.
I wanted to check the system parameters are set correct but not sure what they all do.
Current settings are,
Internal Sensor ofset - set to 0
Cycle Rate - Set to 6 per hour
Minimum on time 2 mins
Fail Safe Enabled
Hot Water Temp - Set to 60 (on the boiler this is set to 65 I believe)
Hot Water Overun - 0
Hot Water Differential - 10
Hot Water Priority - Enabled
My system is as follows,
Bosch Greenstar 8000 35 Life System boiler - this was recently installed
Hot water cylinder (Sealed)
Evohome system
12 x zones - 11 of them have HR92 installed
The remaining zone being Polypipe wet under heating system with a BDR91 controlling the Polypipe ZRU PB970028, I spoke to Honeywell who said this should be setup as a Zone valve.
1 x Hotwater Kit
I also wondered if opentherm was worthwhile but to be honest I don't know enough about it.
If anyone has setup a similar system I would really appreciate any help or guidance and if you need to know anymore about the system I will try to answer.
Thanks
Mark
Anyway, we have switched over to a smart meter recently and I noticed our high gas usage and wanted to check the Honeywell was working as it should, the chap who fit the boiler didnt really know much about it. I know it would have been better to get a connected specialist in to install the boiler and check it over but I have found them difficult to get hold of and not really interested unless they installed the evohome system, the original Evohome installer has gone missing. So I am stuck between a rock and a hard place at the moment and left to try and find out for myself.
I wanted to check the system parameters are set correct but not sure what they all do.
Current settings are,
Internal Sensor ofset - set to 0
Cycle Rate - Set to 6 per hour
Minimum on time 2 mins
Fail Safe Enabled
Hot Water Temp - Set to 60 (on the boiler this is set to 65 I believe)
Hot Water Overun - 0
Hot Water Differential - 10
Hot Water Priority - Enabled
My system is as follows,
Bosch Greenstar 8000 35 Life System boiler - this was recently installed
Hot water cylinder (Sealed)
Evohome system
12 x zones - 11 of them have HR92 installed
The remaining zone being Polypipe wet under heating system with a BDR91 controlling the Polypipe ZRU PB970028, I spoke to Honeywell who said this should be setup as a Zone valve.
1 x Hotwater Kit
I also wondered if opentherm was worthwhile but to be honest I don't know enough about it.
If anyone has setup a similar system I would really appreciate any help or guidance and if you need to know anymore about the system I will try to answer.
Thanks
Mark