Features and benefits – hotun dry trap tundish for unvented water heaters
There are many features and benefits of the hotun dry trap tundish that make it an industry go-to product.
It is now available in over 80% of Britain’s Plumbing Merchant Outlets
Features and benefits – hotun dry trap tundish for unvented water heaters
Small unvented water heaters
Small water heaters (10 – 15 litre capacity) are generally located in internal, landlocked spaces and in kitchen base unit cupboards. Thus the water heater will have limited access to an external wall. For an unvented cylinder, this gives the installer a problem of running the pressure relief discharge to a safe point of discharge.
The regulations state that this pipe should be run to an external point of termination. But if the pipe is not able to be run t outside, then how does the installer solve the problem?
If the installer runs the pipe to an internal waste, several regulations kick in, they are;
- The discharge must be visible and the user of installer must be able to see any water dripping (water regulations undue consumption clauses)
- What happens if the installer wants to connect the PRV to drain and if it is connected to a potable water source (the water heater)? In this instance, the installer must provide a way to prevent back flow or back siphonage of the water from the waste pipe from contaminating the water connected to the water heater (water regulations, prevention of contamination clauses)
- As there must be a visible gap in which to see any water dripping, that gap must be open-sided. But in this instance the installer must prevent any odours and gasses from coming back out of the waste pipe and back into the building (Building Regulations G3 and H1)
To get round these issues, it has or rather had become common practice for the installer to “hard pipe” the PRV to drain, compromising and therefore breaking the regulations on two fronts,
- There is no air gap, so water cannot be seen
- There is no protection against backflow or back siphonage contamination
So, if that the is the case then why do installers use this method?
A hard piped installation draws no attention to itself. If a standard tundish was used to solve 1 & 2 above, they then haven’t covered how to stop smells, which would be noticed!
What is the solution?
Features and benefits – hotun dry trap tundish for unvented water heaters
The hotun® dry trap tundish is the solution
In one clever little product the hotun dry trap tundish provides:
- An air break to drain
- Visibility of water passing
- Easy visibility of residual water, if he PRV has STOPPED dripping (ie a boiler that has lost all its pressure and has then locked out.
- A sprung valve which prevents odours (easily cleaned (if necessary) in situ in seconds without having to remove the tundish from the pipeline)
- Fitted into teh tightest of spaces (73mm for our snallest dry trap – the hotun 100C 15×22)
Unique Selling Points (USP’s)
- hotun’s unique design means that any water, either dripping or having dripped, is easily seen, giving unrivalled and easy visibility to see and therefore diagnose any issues
- industry beating air break to drain design. Meaning that it is fully WRAS approved to provide the correct level of backflow and back siphonage protection. In turn, this means that all possibility of contaminating the potable water is eliminated
- A patented, sprung valve arrangement to reliably prevent any smells or odours coming back into the building and is now warrantied for 10 years (if registered at time of installation)
- In pipeline service and cleaning – because of hotun’s open sided construction. If there is any need to clean the valve, it can be done without having to remove the tundish from the pipeline or take the product apart. Simply pull the valve back up through the aperture, clean the rubber diaphragm and then push it back down. This, saves time on any servicing of the product. Other products on the market have to be removed from the pipeline and dismantled for them to be cleaned!
- hotun is the only dry trap tundish on the market to do all these things in one, fully approved product