What Extras Do I Need To Fit To New Vented System Cylinders?

[CareerChangeChancer]

I have a definite new vented install coming up, and a poss. second one. Complete new systems. I am fine with the pipework layout, but just want to check with other installers what extras they fit to hw cylinder primaries so that the system works correctly.

1) Would you always fit an air release valve on the hw cyl. flow primary, just before it enters the cylinder? Automatic or manual?

2) Some hw primaries have a gate valve on to increase resistance so that the hw cyl. doesn't rob the heating when both are on together. Do you always fit these to start with, or only if it becomes a problem later?

3) Is there anything else I should consider for the hw cyl. to make sure it works properly.

Thanks for any advice

 

[ironman1]

If you know the system layout then why are you asking?............books & internet are great but absolutely no subtitute for experiance & knowledge , if this is a paying job then advise customer to use a competent installer.

I see this every day , customer gets a job done on the cheap then has to call a qualified tradesperson in to put it right , i have sympathy for manufactures that have to warranty their products.

 

[Boilerman2]

You only need to fit a manual or Auto air vent if the coil is a "high point" if not - you don't need one as for a balancing valve - that is a matter for the person designing/specifying the system

 

[bengasman]

I have a definite new vented install coming up,

The question is: why would you design a new vented installation in the 21st century?

 

[misterdubya]

3) Is there anything else I should consider for the hw cyl. to make sure it works properly.

Thanks for any advice

Fit an Immersion, so when you cock up the install you wont leave the custard with no hot water.

 

[PEDANTICVINDICTIVEMAN]

I have a definite new vented install coming up,

The question is: why would you design a new vented installation in the 21st century?

Why the fuk would you fit an overly complicated piece of crap like an unvented, when vented is so much cheaper to install and maintain.

 

[bengasman]

Because open vent is unhygienic to say the least and well past it's sell by date if we are talking about the cylinder.
If the question is about the ch, the answer is because open vent is a poor compromise.

 

[Agile]

If you were really pedantic then you would have read the heading and first posting properly and seen that it is a VENTED cylinder!

If the OP does not know if a balancing valve on the cylinder than in my view he is not competent to make the installation.

This is the problem with short course people who let themselves loose on the public and take on jobs they dont have enough experience for.

That then gives our trade a bad reputation.

Tony

 

[bengasman]

...heading and first posting properly and seen that it is a VENTED cylinder!

It actually says: vented SYSTEMS cylinder, which indicates the op does not know what he is on about, which in turn means he could refer to any option.
It also says complete new system.

If the OP does not know if a balancing valve on the cylinder than in my view he is not competent to make the installation.

Indeed.
The op is either a danger to himself and others, or it's a windup. Judging by his mane, my money is on the latter.

[/b]

 

[Servotech]

I have a definite new vented install coming up, and a poss. second one. Complete new systems. I am fine with the pipework layout, but just want to check with other installers what extras they fit to hw cylinder primaries so that the system works correctly.

1) Would you always fit an air release valve on the hw cyl. flow primary, just before it enters the cylinder? Automatic or manual?

Servotech "No it won't be nessesary as the expansion pipe if most likely to be taken from the primary flow" f

2) Some hw primaries have a gate valve on to increase resistance so that the hw cyl. doesn't rob the heating when both are on together. Do you always fit these to start with, or only if it becomes a problem later?

Servotech "We usually fit them at the time of instulation ( it acts as a balancing valve for the hot water circuit"

3) Is there anything else I should consider for the hw cyl. to make sure it works properly.

Servotech "Just keep things as simple as possible. One thing I will add though is that the greater the distance in hight between the MST and the cylinder the more pressure you will have on the hot water flow (domestic).
You can also gain presure at the hot tap by increasing the size of the cold feed from the MST (mains storage tank) to the cylinder to 28mm."

Servotech (technicial help at your sewrvice),


Thanks for any advice

 

[Agile]

It used to be a BSxxx requirement to use 28 mm cold feeds to cylinders!

Sadly often downgraded by house builders so many trainees thought it was the correct size to use.

Tony

 

[ironman1]

You can also gain presure at the hot tap by increasing the size of the cold feed from the MST (mains storage tank) to the cylinder to 28mm."
]

Pressure (static head) will remain the same whether using a 42mm or 22mm cold feed.

 

[CareerChangeChancer]

Many thanks to the people who made a helpful post. I will ignore the others with the holier-than-thou rantings. Agile got his usual lecture in, but redeemed himself by actually making a useful second post.

Most of my heating work seems to involve sealed systems, mainly combi. An elderly customer is insisting on a new vented system for a house that they have moved into. I wanted to ensure that the hot water side of things was designed properly.

 

[PlumbGas]

If you know the system layout then why are you asking?............books & internet are great but absolutely no subtitute for experiance & knowledge , if this is a paying job then advise customer to use a competent installer.

I see this every day , customer gets a job done on the cheap then has to call a qualified tradesperson in to put it right , i have sympathy for manufactures that have to warranty their products.

D*$K HEAD ironman, give him a chance, if somebody wants a career change then there is no reason why they shouldn't have the chance to do it, not everybody had the opportunity to do or know what they wanted to do when they left school and couldn't go through a full apprenticeship now, as the younger generation coming through don't want to stick there arms down someones shi*er then if it wasn't for people like careerchange you old twa*s would have to work until you dropped dead, and atleast he is trying to get the pro's advise, if you have nothing useful to help him then shut the f*^k up

 

[kevplumb]

This is the problem with short course people who let themselves loose on the public and take on jobs they dont have enough experience for.

That then gives our trade a bad reputation.

our trade

deffo not yours bonny lad