HEATLINE SOLARIS COMBINATION BOILERS. First of all may I say that I am an Ex British Gas Trained Breakdown Engineer, and that I now work happily for myself? I purchased 3x of these 24KW boilers with an excellent DHW water flow rate for what I thought at the time was a bargain price. I fitted 1x into a landlord property about 1 year ago, and then I had to make about 4 different calls (some to very highly priced and over peak rate priced numbers) to get this boiler logged into their register’s, this had to be done just to enable me to get there contracted engineer to call round to set this boiler to run correctly, I finally got to speak to this engineer and he said he would meet me about 48 hours later at 9.00am at this rented house, he assured me that I would be his FIRST JOB on that morning, however he didn’t show on site until 11.20am, because he had decided to call at other jobs before my PRE-BOOKED 9.00am APPOINTMENT, this I wasted my valuable working time on this appointment day, this in my opinion was a VERY BAD SERVICE that I received from HEATLINE’S contracted engineer. HeatLine, who might I also say are also owned/joined up with Glowworm and Valliant Boiler’s, where they all reside from there depot at Belper, in Derbyshire, type in glow-worm postcode in Google and sure enough all of them are on there. DONT take what is written in the INSTALATION MANUAL to be FULLY CORRECT, it may be in another country, but it WONT WORK HERE without resetting the potentiometers to run in ENGLAND, the instructions says it DOES NOT NEED TO BE COMISIONED as its been fully wet tested... WELL I BEG TO DIFFER...you will have to re-set them to get it to fire correctly. I fitted 1x in my own home about 6 months ago and it failed after only 3 months use, the ignition module decided to give out a very week spark, not enough to light my boiler every time, but lucky for me I was able to take one off my new spare boxed up boiler in my stock pile, until I can be bothered to book another site visit and wait for their contracted engineer to call to replace it under warranty for free...