HVAC Questions? Ask an HVAC Expert for Answers ASAP
OK my name is ***** ***** I will attempt to solve this problem for you, can you advise me what the manufacturer of the boiler is and also its model number and also the shower manufacturer.
Ready to go when you have supplied the above ~ Ian
HRM Wallstar boiler Serial No. 20/02508 - 25/19:20 Shower I bought recently from Wickes - a simple set height large head
OK just a little more information, when we are talking about the shower head how is it connected to the water services ?
Its plumbed in to hot and cold pipes which have a long run from the boiler - I've had them lagged thinking that would help, but still can't understand how sink tap is hot and shower is not?
Approx how long is the run?
Maybe 50 feet or so?
I've tried taking shower head off but no difference and I've tried running the cold tap in the basin at the same time which does help a little.
OK you will have to leave this with me but I need more information if you can give it, I need specific details of the boiler as I cant find the 25/19 wallstar on their page. I assume it is oil fired but correct me if its gas, however from what I can see you should be getting somewhere around 35C at the shower head which is a lot hotter than tepid. I could also use the size of the supply pipes to the shower head.~ The information that I have here also refers to mixing valve below the boiler which can be changed from 1 to 5 to increase/reduce the temperature of the hot water ~ Ian
Yes it is oil fired Ian - I have the handbook in front of me. The mixing valve is on 5.
OK can you give me what is on the front of the handbook and I will contact wallstar for you tomorrow and have a chat about this problem, it surely seems strange to me, I have a combi boiler here at home and whilst the run is only about 30 feet it give a belting hot shower, with out lagging. OK I have to let it run for about 5 minutes to get the pipes warm but once they're up to temperature its fantastic. I usually have a shave whilst Im waiting ~ Ian
Can you confirm that the shower pipes are connected to the same supply as the basin ?
Ok - supply pipes are about an inch. The only information on the front of the handbook is HRM Wallstar Boiler Service no. 20/02508 - 25/19:20
Yes the shower pipes are the same supply as the basin - and yes I do let the shower run for about five minutes like you say. Look forward to hearing from you. Thanks, Julie
OK leave it with me will find out and see what they suggest and come back to you tomorrow ~ Ian
OK I have an answer of sorts from Wallstar when you are ready to go ~ Ian
OK Im here if you want the information
OK I'm on here from 1600 tomorrow ~ Ian
Yes I'd still like the information please. Will try and catch you online over the next few days. Julie
OK are you still here I am online
OK bearing in mind what you told me earlier about the pipes to the shower being about 1 inch (likely 22mm) I spoke to Wallstar technical on Your behalf. I was advised that the installation instructions show clearly that to achieve a 35C increase from the mains water incoming temperature that the supply pipes must not be greater in size that 15mm. Anything greater that 15 causes too much loss of heat through the extra external surface area of the pipework and they are not surprised that you cant get any decent temperature at the shower head. Not a very satisfactory answer for You but at least you have a expert Wallstar opinion ~ Ian
Thanks for your time looking into this for me Ian - and contacting Wallstar. Still doesn't explain why the basin hot tap gets really hot? I guess I'll just have to use the shower downstairs which is closer to the boiler. Have a good Christmas. Julie
As I said Im sorry to be the supplier of bad news, perhaps an electric power shower for upstairs? Would you now kindly rate my advice to you so that I can close down you information request. Have a great Christmas and New Year ~ Ian