Hi,
Short version:
Do frost protection valves trigger when the water in the pipe gets to threshold, or when the air temp drops?
Long version:
I'd rather use frost protection + anti-freeze cycle on my mitsubishi ecodan heat pump. The warranty is apparently fine with that combination, and it avoids efficiency-reducing (and wildly expensive) glycol. Will position the frost valves (altecnic) at the coldest place, on the connection between the exterior wall and the compressor unit, so they should be the first to experience low temps.
My worry is that if the valves dump the water when the air temp gets to at 3C, that will happen quite a few times each winter (south west uk). I don't mind topping up the system its more that I wont have heating when the air temp is low and thats exactly when I want heating.
If they trigger when the water temp is below 3C thats fine, as that shouldn't happen unless there is a powercut during very cold weather (and I wouldn't have heating then anyway). They wouldn't trigger just because the air temp is low because between the normal heating cycles and the frost protection running the pump when the water is below 6C (I called mitsubishi and warranty demands the trigger temp is no lower than 6C), the water wouldn't get below 3, so no problems.
Does anyone have one or know for sure how they work? Because frankly, if they go by air temp I think I'll go down the glycol route, cos I don't want the heating system disabled right when it gets cold!
Thanks!!!!
Continue reading...
Short version:
Do frost protection valves trigger when the water in the pipe gets to threshold, or when the air temp drops?
Long version:
I'd rather use frost protection + anti-freeze cycle on my mitsubishi ecodan heat pump. The warranty is apparently fine with that combination, and it avoids efficiency-reducing (and wildly expensive) glycol. Will position the frost valves (altecnic) at the coldest place, on the connection between the exterior wall and the compressor unit, so they should be the first to experience low temps.
My worry is that if the valves dump the water when the air temp gets to at 3C, that will happen quite a few times each winter (south west uk). I don't mind topping up the system its more that I wont have heating when the air temp is low and thats exactly when I want heating.
If they trigger when the water temp is below 3C thats fine, as that shouldn't happen unless there is a powercut during very cold weather (and I wouldn't have heating then anyway). They wouldn't trigger just because the air temp is low because between the normal heating cycles and the frost protection running the pump when the water is below 6C (I called mitsubishi and warranty demands the trigger temp is no lower than 6C), the water wouldn't get below 3, so no problems.
Does anyone have one or know for sure how they work? Because frankly, if they go by air temp I think I'll go down the glycol route, cos I don't want the heating system disabled right when it gets cold!
Thanks!!!!
Continue reading...
