Urgent Glycol Question
There's no glycol in my heat pump system at the moment. The installers were going to add it after I'd finished decorating. Everything took ages and we ended up in a wrangle. Last night I remembered its still in two containers under the stairs. I kept the pump running on and off overnight last night as a precaution. Is that necessary? Do I need to worry?
I think you were wise to run the pump as a precaution, if the image is your garden, then very wise! In the south east, we have had an overnight low of 1 degree C. but our system has anti-freeze valves and we keep the heat pump on 24/7 anyway.
I take it you do not have anti-freeze valves at the back of the heat pump? I also imagine that this is a temporary precaution and your installers are returning soon to mix in the glycol for you? Regards, Toodles.
Toodles, heats his home with cold draughts and cooks food with magnets.
It probably isn’t a major issue as unless the heat pump actually loses power it will run the pump to stop freezing.
As toodles points out quite a few of us run without antifreeze but use anti frost valves. Some even don’t bother using them for the reason I mention above.
House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60
@toodles yes, it was a temporary solution. I usually set it right back temp wise at night to avoid noise but when I saw the snow I remembered the glycol and did a panic Google. According to forecast we had only -1 last night but plenty of settling snow.
@bontwoody thanks. I'm probably having some adjustments made to piping so I will ask about anti frost valves. My midnight Google suggested glycol might make it more expensive to run, but I guess it's also expensive to fix if it breaks!
@lokisam Yes the glycol reduces the amount of heat the fluid can hold. There is an interesting debate on whether anti frost valves are necessary and the type of water treatment required if no glycol. Personally I have valves and just use tap water in mine.
House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60
Posted by: @bontwoodyPersonally I have valves and just use tap water in mine.
Same here
And yes when the temp drops low enough even when its off the heat pump runs the water pump every hour by the looks of it:
above 7 deg
6deg or lower seems to be the trigger point for the pump to run
“Anything worth doing, is worth doing right.”
@irmartini always good to see what I thought was happening does 😂
House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60
Posted by: @lokisamI'm probably having some adjustments made to piping so I will ask about anti frost valves.
Read this Topic which discusses anti-freeze valves and glycol.
Either strategy has deficiencies which need consideration before you start waving cash in front of an installer.
Save energy... recycle electrons!
I've only just noticed that when it runs the pump its using DHW circuit, which makes sense as the DHW temp is likely to be hotter than the central heating circuit especially once its been off for a few hours.
“Anything worth doing, is worth doing right.”
- 26 Forums
- 2,208 Topics
- 48.7 K Posts
- 79 Online
- 5,868 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Inventor (Midea) Heat Pump short cycling advice
I installed the 80L tank (volumizer) things got better ...
By immunity , 5 minutes ago
-
RE: Mitsubishi Ecodan F8 error
I absolutely love this. This is the quintessential heat...
By Mars , 7 hours ago
-
RE: Testing new controls/monitoring for Midea Clone ASHP
@papahuhu at the end of the day if you are happy with h...
By benson , 12 hours ago
-
RE: Can you recommend a Mitsubishi service engineer in the Rochdale area?
@dgclimatecontrol We'll all need annual servicing. How...
By Suzy-shadow , 12 hours ago
-
RE: Renewables & Heat Pumps in the News
@transparent I’ve understood your point now. The point ...
By Judith , 13 hours ago
-
RE: Octopus tariffs - a quick comparison
Does indeed need checking, @tim441. Neither Homely ...
By Majordennisbloodnok , 13 hours ago
-
RE: How not to install a heat pump
Delighted to hear that the buffer has been replumbed as...
By JamesPa , 14 hours ago
-
-
RE: Daikin 9kW to 8kW Swap Offer from Octopus
Yes but 9kW is similarly the 16kW derated. So 8kW subs...
By JamesPa , 15 hours ago
-
Actually, there's a rather greater degree of cattle-her...
By Majordennisbloodnok , 16 hours ago
-
RE: The Hidden Secret to a Successful Heat Pump: Pipe Size Matters
@davidnolan22 So far as I can tell from the 'other p...
By JamesPa , 20 hours ago
-
RE: 5 Star Service from Havenwise
I keep getting havenwise ads on my Facebook feed, so cl...
By benson , 22 hours ago
-
Automation options to maximuse efficiency & ToU tariffs
I started a conversation with ChatGPT. What automation...
By Tim441 , 1 day ago
-
RE: 4 Year Ongoing Heat Pump Battle With Poor Heat Pump Installation
@jamespa Oh, I know some that are good and some not so....
By ASHP-BOBBA , 1 day ago
-
RE: Samsung Heat pump with Yonos Pico circulating pump running all the time
I don't know how many pumps you have but I guess it's o...
By JamesPa , 1 day ago
-
RE: Help me keep the faith with my air source heat pump installation
That's just human nature unfortunately, not special to ...
By JamesPa , 1 day ago
-
@bontwoody how long has it been now since you started t...
By Mars , 2 days ago
-
RE: Bosch CS5800i 5kW - Experience So Far
Yes, over the last few days I've been keeping a very cl...
By Steelbadger , 2 days ago
-
Absolutely. I am one of those members and I most certai...
By Majordennisbloodnok , 2 days ago