Dimplex quantum help - how hot?

mmmmikey

bob2302 said:

Scot_39 said:

But the core itself is probably far higher  - seen reference to 110 deg C limit - hotter than boiling water - on a quick google.  And the ch6 diagnostic screen 11 ex shows 80s, 90s and 104 max iirc.

I'm very surprized it's that low. Electric Agas presumably heat their bricks to temperatures well above 200C so they can heat ovens. Bricks at 110C would store less energy than the same volume of water at 90C, and water is free at the point of installation.

Is that figure for regular clay bricks or for the magnetite bricks used in storage heaters?

bob2302

mmmmikey said:

bob2302 said:

Scot_39 said:

But the core itself is probably far higher  - seen reference to 110 deg C limit - hotter than boiling water - on a quick google.  And the ch6 diagnostic screen 11 ex shows 80s, 90s and 104 max iirc.

I'm very surprized it's that low. Electric Agas presumably heat their bricks to temperatures well above 200C so they can heat ovens. Bricks at 110C would store less energy than the same volume of water at 90C, and water is free at the point of installation.

Is that figure for regular clay bricks or for the magnetite bricks used in storage heaters?

I used the figures for  magnetite bricks quoted in the previous link for quantum heaters given by scot_39

lilac_dawn

Does anyone know how they behave if there are 2 in the room? Does one become a slave of the other? I currently have one old and one Quantum, Only have the quantum on but it's struggling to get above 16 degrees in the room today. Just wondering what the effect will be of getting another quantum. although for now I think I'll have to start using the old one again. 

Scot_39

lilac_dawn said:

Does anyone know how they behave if there are 2 in the room? Does one become a slave of the other? I currently have one old and one Quantum, Only have the quantum on but it's struggling to get above 16 degrees in the room today. Just wondering what the effect will be of getting another quantum. although for now I think I'll have to start using the old one again. 

The mode might have changed name from slave to secondary.

According to the manual if have 2 quantums the "smallest" of the two should be set in secondary mode.

It's a bit short on details of exactly what it does - just says prevents the heater in that mode  from undercharging - in the RF G12 version of manual it's under secondary.

Nothing to suggest any intelligent linking now heaters have rf comms.

The help for the old slave mode on gdhv help site is similarly worded

https://help.gdhv.co.uk/support/solutions/articles/79000143364-how-do-i-enable-slave-mode-on-my-quantum-heater-


There might be more detail on the mode their if just do a general search.

lilac_dawn

… although now I’m wondering if it’s worth getting another quantum. My old storage heater is a fan assisted one, so a precursor to the quantum. AFAIK, it only takes in charge depending on how much is left in the bricks (is that the same for all storage heaters?). I can’t pre-program times on it, but I can manually set it to low, which is just about off, then turn it up when it needs to release heat. If the quantum is red hot when charging, so heating the room as ithe old storage heater does, I’m wondering what the advantage is of the quantum. 

Gerry1

lilac_dawn said:

If the quantum is red hot when charging, so heating the room as the old storage heater does, I’m wondering what the advantage is of the quantum. 

Think of a Quantum like a Thermos flask.  Your tea will be at near boiling point but very little heat will escape until you pour it out.

Think of an old NSH like a hot water bottle.  It's always losing heat and will become cool by the evening just when it's needed most.

lilac_dawn

But they are both red hot when charging. I have FxL so it has more insulation than other storage heaters and the fan chucks out the heat - much like the quantum. 

Gerry1

My understanding is that Quantum shouldn't be operating the fan to chuck out heat when charging unless you've told it you want to be warm at that time and the room is cooler than your chosen temperature.  That's the whole point about having High Heat Retention, heat doesn't leak out, it has to be blown out by the fan.

lilac_dawn

Gerry1 said:

My understanding is that Quantum shouldn't be operating the fan to chuck out heat when charging unless you've told it you want to be warm at that time and the room is cooler than your chosen temperature.  That's the whole point about having High Heat Retention, heat doesn't leak out, it has to be blown out by the fan.

It doesn’t chuck out the heat via the fan but the fact it is so hot means it is heating the room, as if it were on. I’d call that leakage but engineer on phone said it would get hot when charging. That’s why I’m struggling to see the advantage. 

EssexHebridean

We’ve had this conversation already, surely? Quantums should feel warm to the touch - but no more - when charging. If you are putting your hand to the casing and immediately snatching it away again with an “ouch” that is not only too hot (they don’t even get that hot on the exterior when discharging heat) I would suggest that indicates a significant problem with the unit - possibly either missing insulation or the bricks overheating. Both will cost you money, and the second could be a significant fire risk.