ruggers Posted December 20, 2022 Share Posted December 20, 2022 On 06/12/2022 at 07:10, HughF said: you only need one of them, not two as specified by most installers. I wasn't aware of them, everyone always say fit 2. Are they a serviceable part because there's a lot riding on them working if it's fit and forget and you get a power cut in 8 yrs time on freezing day. TBH I can't think of the last time there was every a power cut in 15 years, but we do get -5°C periods every year for a few days/week. On 06/12/2022 at 07:10, HughF said: On 06/12/2022 at 13:55, ProDave said: Are you serious about valves to dump the water out of your system of it freezes? I just mixed an inhibitor / antifreeze with the water in mine at a level that should prevent it from freezing to -10. Job done. Did you just mix regular antifreeze used for something else and fill your whole system with it, so it's in your radiators and all pipework? I was hoping not to include any inhibitor in a new install and apply VDI 2035. Link to comment Share on other sites More sharing options...
ProDave Posted December 20, 2022 Share Posted December 20, 2022 27 minutes ago, ruggers said: I wasn't aware of them, everyone always say fit 2. Are they a serviceable part because there's a lot riding on them working if it's fit and forget and you get a power cut in 8 yrs time on freezing day. TBH I can't think of the last time there was every a power cut in 15 years, but we do get -5°C periods every year for a few days/week. Did you just mix regular antifreeze used for something else and fill your whole system with it, so it's in your radiators and all pipework? I was hoping not to include any inhibitor in a new install and apply VDI 2035. It was a cheap inhibitor / antifreeze that screweys sold a few years ago, intended for central heating systems and mixed at 25:1 would give frost protection to -10 1 Link to comment Share on other sites More sharing options...
HughF Posted December 20, 2022 Share Posted December 20, 2022 5 hours ago, ruggers said: I wasn't aware of them, everyone always say fit 2. Are they a serviceable part because there's a lot riding on them working if it's fit and forget and you get a power cut in 8 yrs time on freezing day. TBH I can't think of the last time there was every a power cut in 15 years, but we do get -5°C periods every year for a few days/week. Did you just mix regular antifreeze used for something else and fill your whole system with it, so it's in your radiators and all pipework? I was hoping not to include any inhibitor in a new install and apply VDI 2035. When was the last time you changed the thermostat in your car? Link to comment Share on other sites More sharing options...
SteamyTea Posted December 21, 2022 Share Posted December 21, 2022 (edited) 10 hours ago, HughF said: When was the last time you changed the thermostat in your car? Mine was done 3 years ago because the seal had gone. Noting wrong with the actual thermostat. That is on a car that was then 11 years old and about 140k miles. Edited December 21, 2022 by SteamyTea Link to comment Share on other sites More sharing options...
ruggers Posted December 23, 2022 Share Posted December 23, 2022 On 20/12/2022 at 22:10, HughF said: When was the last time you changed the thermostat in your car? Seems irrelevant, but 6 years ago. When the stat fails on the car its usually in the half open position and stops the engine every fully warming up or takes a very long time, it doesn't blow the engine. If it fails closed you'll have a nice warm engine and cold cab. The anti freeze valves are a pressure relief system that stops your 4 grand bit of kit being damaged in the rare instance theres a power cut and the outside air temperature is 3°C or less. Thats the only reason I asked if they are servicable. These things tend to never need to activate and if they haven't, but in 5, 6 8 yrs time they need to but have sized isn't good. I've never seen them to make a judgement on whether they would fail closed or not. Link to comment Share on other sites More sharing options...
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