Which one is an adequate Boiler ?

loafclover

I'm in desperate need of help and advise from a professional please.

I'm about to get Central Heating done in my house and really dont know how to work out which is an adequate boiler to buy as the one recommended by my contractor seems that its not the right capacity.

Work is being carried out by a CIPHE/GAS SAFE REGISTER contractor but I am way confused on his recommendation about what boiler to choose and what pipes (copper or plastic) to use for central Heating piping.

I am installing a MegaFlo system instead of Combi system. I have 4 bed room house and details are as follows:-

4 x RADS in each room - roughly 4000 BTU each (16000 BTUs)
1 x RAD in Loft - 4000 BTU
3 Towel Rads - 1800 BTU each ( 5400 BTUs)
2 x RADS in Living Room - 4500 BTU each (9000 BTUs)
1 x RAD Hallway 3500 BTU

In total I have 11 RADS which totals to 37,900 BTUs. He has recommended that the adequate boiler size for my property will be 24 KW and the boiler he has recommended is Vaillant ECO Tech Plus 624. I am worried that this is under capacity according to my requirements as I have spokent to few people and pretty much they recommend that I need a 37 KW boiler (126000 + BTU) and have advised that I should go for Vaillant ECo Tech Plus 637.

I already have a Santon Premier Plus - Unvented Hot Water System with 250 litres capacity cylinder/tank installed.

Reading from Vaillant website it seems that using Vaillant accessories with its system may be energy efficient but then again its Vaillant speaking volumes of themselves. :rotfl:

1. Vaillant Digital Room stat.
2. Vaillant 7 day programmer.
3. Vaillant Wireless Weather Compensator

I am thinking of using Weather Compensator (Now whether I should go for wireless one or wired one I dont know. Being a numb nut I think if I go for wireless one it will help me save money on installation cost as there will be less wires and configuration to do. But then again I could be wrong.)

I'm not too sure whether I have the right combination of accessories listed above or not. I am not too sure what to do and am getting soo confused that I keep going in circles as cant seem to get the correct advice from any where unfortunately hence this thread.

I would be grateful for any ones advice and if they can please point me in the right direction. (As with out a shadow of a doubt they will have more experience gained from practical and installation side of things.)

Any questions then please feel free to ask.

Many Thanks.

Canucklehead

Good evening: assuming you have had more than the one quote, what have the other RGIs recommended/quoted? The 'few people' you have spoken to, are they heating professionals?

Canucklehead

loafclover

I have more than one quote but all of them have been cheeky enough not to mention the precise details of boiler I would need. They have pretty much played with words and have quoted that they will be installin "Vaillant ECo Tech Plus" boiler. With limited understanding of what it is and how these things worked I had no knowledge of whether the information supplied is useful or not. It was in the last few days that I have started reading and googling on line so get better understand things. 10 days ago I didnt have a clue about ins and out of central heating where as now I can talk about them to some extent.

The few people I have spoken to are not professionals but are pretty much hands on in DIY stuff. They are property investors who spend all day collecting rent from different assets they have, hence was convinced that they know what they are talking about.

Canucklehead

loafclover wrote: »

I have more than one quote but all of them have been cheeky enough not to mention the precise details of boiler I would need. They have pretty much played with words and have quoted that they will be installin "Vaillant ECo Tech Plus" boiler. With limited understanding of what it is and how these things worked I had no knowledge of whether the information supplied is useful or not. It was in the last few days that I have started reading and googling on line so get better understand things. 10 days ago I didnt have a clue about ins and out of central heating where as now I can talk about them to some extent.

The few people I have spoken to are not professionals but are pretty much hands on in DIY stuff. They are property investors who spend all day collecting rent from different assets they have, hence was convinced that they know what they are talking about.

Good morning: as suggested by at least 1 RGI on your duplicate thread the recommendations made by your 'property investors' are inaccurate (based on the details provided by you). A RGI, after conducting a site survey and discussing your requirements, would be best placed to advise.

The HHIC recommends the following info should be included in a quotation...see here.

Mods: perhaps you could merge the threads.;)

Canucklehead

loafclover

First of all please accept my apologies for late reply and secondly for duplicating posts. Being a first time poster & lack of understanding has lead to this duplication but thanks once again for your help. I really do appreciate it. I dont know how to merge them and perhaps if MODS can that would be great. : )

Thanks once again for the link. It really has helped and I salute for it. I'll tell you the reason why.

The following the extract from the email that company replied to:- (My question in Blue BOLD)


[FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]From the conversations we had about the central heating piping I remember being told that you would advise plastic pipes are they are durable. I have my reservations for that as they might not be as feasible for me and I would be more comfortable with using copper piping instead around the house. [/FONT][/FONT][/FONT]

• Regarding piping materials, I and most engineers not obliged to discuss technical details with the customer because we are professionally responsible to maintain the quality and standard of our job, having said that I always mention to all customers before reaching an agreement details which could effect costs to give fairer price. regarding plastic pipes I can assure you that they are recommended for heating systems because they are heat efficient, quite, don't lose heat and installation would have less connection because you can get up to 50 meters pipe so they have less possibility of leaks, also they don't get rusty.

I did some digging around on Vaillant website. I found some interesting accessories that can be used with their EcoTech boiler systems. Like:-



[FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]1. Weather compensator[/FONT][/FONT][/FONT]
[FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]2. [FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]VRT 30 – Room Thermostat [/FONT][/FONT][/FONT][/FONT][/FONT][/FONT]
[FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]3. [FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]Timeswitch 140 7/day timer which can also be used with VR 65 Control Centre ?[/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT]


[FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]In their quote they suggested using Honeywell timer and vice versa. I was wondering is there any reason why they cant use Vaillant accessories ? The companies engineer reply is below:-[/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT]


[FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif][FONT=Garamond, Times, Serif]From my experience system should be kept simple and not complicated therefore in my installation I intend to use reliable controls like Haneywell and not fancy ones to make sure you wont be out of heating because a (high tec) digital programmer fail to respond because of some sort of interference of internet or radio wave and trust me alot of customers ask me to replace those with common and simple controls[/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT][/FONT]


Their reply was not some how convincing and in my experience thats usually comes from a person who either has limited understanding of the technology and or lack of experience of installation, but I could be wrong and hence am on a forum trying to gather information from more experienced individuals out there like your self. I was wondering if indeed vaillant accessories are too complicated and from a practical point of view - do they cause more agony then comfort ? i.e. keep breaking down etc etc ?

gas4you

See your other post.