Grant oil boiler questions

[Griff_1984]

We've moving into a new house with an oil boiler and I know very little about theses systems. The sellers are elderly and getting details on how the system works is proving tricky. They have it serviced etc and says its all in working order, but I'd like to understand what I'm going to be dealing with.
For anyone familiar with such things, can you identify the type of boiler from the photo? I know it's a grant, but not sure if someone knowledgeable would be able to identify the model and possibly age?
Also, can anyone help me identify the components circled? One looks like a thermostat, but there is a room thermostat in the house too?
Lastly, can any tell just from the photo if this is a heat only or DHW boiler. (The sellers are again a little vague on details, there is a hot water cylinder in the house, but I'm not completely sure if it's immersion or boiler heated or maybe both).

I'll be able to find out more once we've moved in, but in the meantime wanted to do some research and hopefully find out a bit more info.

 

[Rodders53]

That's a frost thermostat on left ... Stops anything freezing with any luck and a return flow temp stat on right to control the water temp when frost stat overrides any room and hw stats.

One would need to take off front panel and lid to find serial and model number plates. It is a condensing boiler though! Vendors may have the manuals and benchmark install documents somewhere?

I see only flow and return(x2) pipes so I think it is a system boiler. Combi would have separate domestic HW pipes in and out.
There will be motorised valves and DHW tank elsewhere. Likely be boiler heated with backup / emergency immersion.

$1000 question is the system sealed or vented and the same for the dhw. I.e. are there feed tanks in the loft?

 

[Exedon]

Grant vortex heat only with grant white system vertical flue.
Probably has pump/motorised valve in airing cupboard.
We're Grant registered installer's so fit a good few.

 

[Griff_1984]

Thank you both for the replies. It's good to know it's a condensing type (I assumes the pipe at the bottom is a condensate pipe which is how you knew?).
I'll check the loft for header tanks when I next get in.
It's good to know it can't be too old - seems like the grant vortex condenser types only came to market about 2002, and from the look of it I would guess it's not too old.

 

[Exedon]

When you get chance look at the data label it includes date of manufacture.
Fairly sure that's one of later boilers Grant used a different badge earlier.