Intergas boiler

[ianmcd]

Models from Ferroli, Potterton and Worcester I have worked on, and now I hear that Vokera also had one.

Vokera had two, the first compact and the vokera option were both Bi thermal, and both suffered from premature heat exchanger problems

 

[hard-work]

Even with double glazing the existing radiators may be too small to provide adequate heat when CH water temperature is reduced down to 60°C

When heating was installed the radiators would have been sized for 80°C water and double glazing in place.

Perhaps an upgrade to triple glazing is the solution to preventing hazardous hot slugs in the domestic hot water supply from certain makes of combi boilers.

In the 70/80s, the insulation value was appalling. Most homes have uprated their insulation greatly. Also rads were 10% oversized generally. These days with uprated insulation, a home can be run at 60C with no problems. A decent weather compensator will keep the flow temp down quite low most of the time.

 

[hard-work]

To add...
The likes of Intergas have integrated weather compensation. Fit an outside temperature sensor and an Opentherm room temperature sensor, then low flow temperatures are near guaranteed - as well as low gas bills.

 

[hard-work]

Vokera had two, the first compact and the vokera option were both Bi thermal, and both suffered from premature heat exchanger problems

Intergas heat exchangers are built like tanks.

 

[bernardgreen]

Most homes have uprated their insulation greatly.

There are still many homes that have not uprated their thermal insulation.

Intergas heat exchangers are built like tanks.

with a lot of metal to heat before any heat can reach the water.

 

[durhamplumber]

as well as low gas bills.

Lol...

 

[Razor900]

To add...
The likes of Intergas have integrated weather compensation. Fit an outside temperature sensor and an Opentherm room temperature sensor, then low flow temperatures are near guaranteed - as well as low gas bills.

Don't do that it won't work

 

[ianmcd]

Intergas heat exchangers are built like tanks.

Just to add, I never said that the Intergas suffered the same problems, I merely stated that a few older bi-thermal heat exchangers suffered from problems, I didnt mean that I have ever seen the Intergas suffer from it

 

[hard-work]

Intergas have a clever pre-heat function. In the heating season the heat exchanger is constantly pre-heated.

Very few homes have not updated their thermal insulation.

 

[durhamplumber]

Very few homes have not updated their thermal insulation.

That is such a vague statement as to be meaningless.

 

[hard-work]

Don't do that it won't work

Many do. The two sensors, when the system is up to, or near setpoint temperatures will have the flow temperatures markedly reduced.

Eliminating, air leakages (draughts) and uprating insulation, triple glazing instead of double, increasing loft insulation, cavity wall insulation, insulated front door, etc, it the best way for any home, which will allow low flow temperatures from older radiators, giving more efficient condensing operation.

 

[hard-work]

That is such a vague statement as to be meaningless.

I see reading comprehension is not your strong point.

 

[hard-work]

duplicate.

 

[bernardgreen]

Intergas have a clever pre-heat function. In the heating season the heat exchanger is constantly pre-heated.

So what prevents the pre-heated heat exchanger from creating thermal convectional air flows through flue and dissipating ( some of ) the pre-heat to atmosphere ?

 

[durhamplumber]

I see reading comprehension is not your strong point.

Writing vague statements meaning nothing,is defo yours.