When a pressurized cylinder is installed in a cellar/basement which is below the level of the drains what is the correct proceedure in terminating the pressure/temperature relief outlet.
T.I.A
T.I.A
pressurized cylinder in cellar
- Thread starter disastermaster
- Start date
Sponsored Links
- Joined
- 25 Aug 2008
- Messages
- 5,776
- Reaction score
- 2,930
- Country
G3 of the Approved Document should be consulted for full information.
6.1 Both the pressure relief and the expansion temperature relief function valve(s) are intended to discharge water only under fault conditions; under normal working conditions water will not be discharged.
In the event of a temperature fault condition the discharge will consist of scalding water. Therefore it must be conveyed to a position where it is visible to the occupants but will not cause danger to electrical devices, persons or damage to materials, e.g. asphalt, roofing felt, plastic rainwater fittings.
Note: This is a mandatory requirement of Part 3 of Schedule 1 of the Building Regulations 1995.
6.2 The discharge pipework should be of metal.
6.3 The Tribune Premier should be discharged from the vessel to a tundish from which the pipework should fall vertically for at least 300mm and then continue by continuous fall to a visible safe termination (see Fig. 7). Adequate precautions should be taken to prevent obstruction of the outlet.
6.4 Discharge termination points should be below a fixed grating and above the water seal of a trapped gully.
Other arrangements are:
a) downwards at low level; i.e. up to 100mm above external surfaces such as car parks, hard standings, grassed areas etc. are acceptable providing that where children may play or otherwise come into contact with discharges a wire cage should be positioned to prevent contact, whilst maintaining visibility.
b) discharges at high level, e.g. into a metal hopper and metal down pipe with the end of the discharge pipe clearly visible (tundish visible or not) or on to a roof capable of withstanding high temperature discharges of water and 3m from any plastic guttering system that would collect such discharges (tundish visible).
c) where a single pipe serves a number of discharges, such as in blocks of flats, the number served should be limited to not more than 6 systems so that any installation discharging can be traced reasonably easily.
The single common discharge pipe should be at least one pipe size larger than the largest individual discharge pipe to be connected.
Taken from range tribune fitting instructions but you really need G3 building regs document for full fitting
6.1 Both the pressure relief and the expansion temperature relief function valve(s) are intended to discharge water only under fault conditions; under normal working conditions water will not be discharged.
In the event of a temperature fault condition the discharge will consist of scalding water. Therefore it must be conveyed to a position where it is visible to the occupants but will not cause danger to electrical devices, persons or damage to materials, e.g. asphalt, roofing felt, plastic rainwater fittings.
Note: This is a mandatory requirement of Part 3 of Schedule 1 of the Building Regulations 1995.
6.2 The discharge pipework should be of metal.
6.3 The Tribune Premier should be discharged from the vessel to a tundish from which the pipework should fall vertically for at least 300mm and then continue by continuous fall to a visible safe termination (see Fig. 7). Adequate precautions should be taken to prevent obstruction of the outlet.
6.4 Discharge termination points should be below a fixed grating and above the water seal of a trapped gully.
Other arrangements are:
a) downwards at low level; i.e. up to 100mm above external surfaces such as car parks, hard standings, grassed areas etc. are acceptable providing that where children may play or otherwise come into contact with discharges a wire cage should be positioned to prevent contact, whilst maintaining visibility.
b) discharges at high level, e.g. into a metal hopper and metal down pipe with the end of the discharge pipe clearly visible (tundish visible or not) or on to a roof capable of withstanding high temperature discharges of water and 3m from any plastic guttering system that would collect such discharges (tundish visible).
c) where a single pipe serves a number of discharges, such as in blocks of flats, the number served should be limited to not more than 6 systems so that any installation discharging can be traced reasonably easily.
The single common discharge pipe should be at least one pipe size larger than the largest individual discharge pipe to be connected.
Taken from range tribune fitting instructions but you really need G3 building regs document for full fitting
C
compheat
about 10 years ago i had the same problem on an installation with 2 condensing system boilers and an unvented cylinder all located in a basement, all the disharge pipework went into a glass fibre water tank and was pumped out via a submersible stainless steel pump.
The local building control were happy with the job.
The local building control were happy with the job.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
