Baxi Combi boiler on DHW

[VanUnamed]

Hello, can a combi boiler be used only for domestic hot water?
It's a Baxi 105E, untested.
Also, I have this boiler set up on Natural gas, but I need it to be on LPG. I have no idea if it works at all, how can I test the thing without having to buy expensive LPG nozzles right away? is there a way to test it without using gas, or by maybe using lpg anyway, outside and with the firebox open? if you can't answer my gas question can you at least answer my water question?

thanks in advance,

 

[Gasmk1]

are you gas safe

 

[hammers4spanner]

First question yes advise to stick a small rad on tho.
Second question answer gas safe engineer required.

 

[Riley]

To ask this question I’m thinking not qualified

 

[ShaunCorbs]

are you gas safe

No