Induction hob

Energy efficient construction methods and insulation
Mr Gus
Posts: 3813
Joined: Sun Jun 13, 2021 9:42 pm
Location: Tofu eaters paradise (harrumph)

Re: Induction hob

#141

Post by Mr Gus »

Very nice joe, do try to make up a small pan of caramel sugar to find any switching frequency problems, ..The only downside we found on our Ikea hob, which I'm loathe to fit yet another hob to replace the c r@p whirlpool unit. If anything I think a two setting unit & make more top space for the gadgets.
(Have yet to run into a 2 or more pans needed occasion in 12 months, which puts it into perspective)

Do you reckon they will next create a tax at point of purchase for total output of things like hobs as part of a tax raising energy efficiency drive in coming months / years ..just in case, I think I'll beat em to it 🤔
Last edited by Mr Gus on Thu Sep 22, 2022 4:34 pm, edited 1 time in total.
1906 ripplewatts @wind Turb-ine-erry
It's the wifes Tesla 3 (she lets me wash it)
Leaf 24
Celotex type insulation stuffed most places
Skip diver to the gentry
Austroflamm WBS
A finger of solar + shed full more
User avatar
Joeboy
Posts: 8094
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: Induction hob

#142

Post by Joeboy »

Worth mentioning air flow. The installation book said to leave a 5mm gap around the hob/worktop, seal the fibres as exposed by cutting if a laminate or wooden top and also the ensure a 5mm gap between underside of worktop and top of oven to allow warm air to flow out. Works well.

We spoke about the number of pans Gus and been at 2 for 6 months!

Image

Image

Basically, don't box it in and let it breathe. :D
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
Adokforme
Posts: 621
Joined: Sun Sep 19, 2021 10:09 pm

Re: Induction hob

#143

Post by Adokforme »

Joeboy wrote: Thu Sep 22, 2022 4:27 pm Worth mentioning air flow. The installation book said to leave a 5mm gap around the hob/worktop, seal the fibres as exposed by cutting if a laminate or wooden top and also the ensure a 5mm gap between underside of worktop and top of oven to allow warm air to flow out. Works well.

We spoke about the number of pans Gus and been at 2 for 6 months!

Image

Image

Basically, don't box it in and let it breathe. :D
Great Job Joe, How cool is that!
Oldgreybeard
Posts: 1873
Joined: Thu Sep 09, 2021 3:42 pm
Location: North East Dorset

Re: Induction hob

#144

Post by Oldgreybeard »

Is yours fixed down?

I was amazed when I fitted ours (an AEG) that it just sat in the hole with nothing holding it down. There are no fixings or anything, it literally just dropped into the hole and sits there, under its own weight. It does have some sort of of soft silicone seal moulding under the glass top that seals to the granite worktop, but that's it. Ours is in an island in the middle of the kitchen, so has a drawer underneath. Presumably that provides enough ventilation. Been fine for several years now, so I can only assume that it's fitted OK.
25 off 250W Perlight solar panels, installed 2014, with a 6kW PowerOne inverter, about 6,000kWh/year generated
6 off Pylontech US3000C batteries, with a Sofar ME3000SP inverter
Mr Gus
Posts: 3813
Joined: Sun Jun 13, 2021 9:42 pm
Location: Tofu eaters paradise (harrumph)

Re: Induction hob

#145

Post by Mr Gus »

When I had to replace the job I smashed (molten plastic broke glass) it was a pig to fit into the cut out, now, as it failed within 6 or so used I have no idea if it was due to not soliciting it in place of simply naff whirlpool quality control.

..I understood the need to fill a 4 spacer with a like for like, but aren't there cover kits or something these days that have been dreamt up as maybe no -scorch areas, or does that interfere with design flow!?
1906 ripplewatts @wind Turb-ine-erry
It's the wifes Tesla 3 (she lets me wash it)
Leaf 24
Celotex type insulation stuffed most places
Skip diver to the gentry
Austroflamm WBS
A finger of solar + shed full more
User avatar
Joeboy
Posts: 8094
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: Induction hob

#146

Post by Joeboy »

Oldgreybeard wrote: Thu Sep 22, 2022 4:34 pm Is yours fixed down?

I was amazed when I fitted ours (an AEG) that it just sat in the hole with nothing holding it down. There are no fixings or anything, it literally just dropped into the hole and sits there, under its own weight. It does have some sort of of soft silicone seal moulding under the glass top that seals to the granite worktop, but that's it. Ours is in an island in the middle of the kitchen, so has a drawer underneath. Presumably that provides enough ventilation. Been fine for several years now, so I can only assume that it's fitted OK.
No, it has 4 spring clips that hold it in place. Surprised also! :lol:
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
User avatar
Joeboy
Posts: 8094
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: Induction hob

#147

Post by Joeboy »

Oldgreybeard wrote: Thu Sep 22, 2022 4:34 pm Is yours fixed down?

I was amazed when I fitted ours (an AEG) that it just sat in the hole with nothing holding it down. There are no fixings or anything, it literally just dropped into the hole and sits there, under its own weight. It does have some sort of of soft silicone seal moulding under the glass top that seals to the granite worktop, but that's it. Ours is in an island in the middle of the kitchen, so has a drawer underneath. Presumably that provides enough ventilation. Been fine for several years now, so I can only assume that it's fitted OK.
There is talk online that induction hobs can fail if not properly
Serviced with air during operation. PCB failure apparently due to overheating? After years I think you'd be OK!
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
User avatar
Joeboy
Posts: 8094
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: Induction hob

#148

Post by Joeboy »

Mr Gus wrote: Thu Sep 22, 2022 4:39 pm When I had to replace the job I smashed (molten plastic broke glass) it was a pig to fit into the cut out, now, as it failed within 6 or so used I have no idea if it was due to not soliciting it in place of simply naff whirlpool quality control.

..I understood the need to fill a 4 spacer with a like for like, but aren't there cover kits or something these days that have been dreamt up as maybe no -scorch areas, or does that interfere with design flow!?
Just use the 2 coils not in use as storage space?
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
User avatar
Joeboy
Posts: 8094
Joined: Mon May 31, 2021 4:22 pm
Location: Inverurie

Re: Induction hob

#149

Post by Joeboy »

Adokforme wrote: Thu Sep 22, 2022 4:32 pm
Joeboy wrote: Thu Sep 22, 2022 4:27 pm Worth mentioning air flow. The installation book said to leave a 5mm gap around the hob/worktop, seal the fibres as exposed by cutting if a laminate or wooden top and also the ensure a 5mm gap between underside of worktop and top of oven to allow warm air to flow out. Works well.

We spoke about the number of pans Gus and been at 2 for 6 months!

Image

Image

Basically, don't box it in and let it breathe. :D
Great Job Joe, How cool is that!
To be honest, I was bricking it a little at this job. Went well, plenty tea and SWMBO giving a hand too. She is very happy as am I. :D

Image
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
Oldgreybeard
Posts: 1873
Joined: Thu Sep 09, 2021 3:42 pm
Location: North East Dorset

Re: Induction hob

#150

Post by Oldgreybeard »

Joeboy wrote: Thu Sep 22, 2022 5:02 pm
Oldgreybeard wrote: Thu Sep 22, 2022 4:34 pm Is yours fixed down?

I was amazed when I fitted ours (an AEG) that it just sat in the hole with nothing holding it down. There are no fixings or anything, it literally just dropped into the hole and sits there, under its own weight. It does have some sort of of soft silicone seal moulding under the glass top that seals to the granite worktop, but that's it. Ours is in an island in the middle of the kitchen, so has a drawer underneath. Presumably that provides enough ventilation. Been fine for several years now, so I can only assume that it's fitted OK.
There is talk online that induction hobs can fail if not properly
Serviced with air during operation. PCB failure apparently due to overheating? After years I think you'd be OK!
The drawer underneath it is pretty big, about 800mm wide, with a fair bit of space between the stuff in it and the underside of the hob. The hob itself is barely any deeper than the fairly thin granite worktop, it sticks down maybe 5mm at the most, so doesn't interfere with anything in the drawer below.
Hob.jpg
Hob.jpg (57.69 KiB) Viewed 1033 times
25 off 250W Perlight solar panels, installed 2014, with a 6kW PowerOne inverter, about 6,000kWh/year generated
6 off Pylontech US3000C batteries, with a Sofar ME3000SP inverter
Post Reply