Leak Detection For Hotel

[Slim R410a]

We are quoting a Mitsubishi R2 VRF for a Hotel (12 rooms) and require leak detection to meet BS EN378.

Any recommendations for this? :confused:

Thanks in advanced.

[r.bartlett]

We are quoting a Mitsubishi R2 VRF for a Hotel (12 rooms) and require leak detection to meet BS EN378.

Any recommendations for this? :confused:

Thanks in advanced.

Iam surprised a 12 bed vrf needs leak detection. personally we do all we can to avoid them as it's a huge cost burden. You could go tosh as they have an add on which covers this (quite expensive though)

[Slim R410a]

Smallest room volume is 25m3. Total charge 25.5kg. (0.98kg/m3 for the allowed 0.44kg/m3 for R410a)

Each en-suite will have individual extract but will probably come on with the light so cant even factor this in.

Thanks for the info on the Tosh kit.

[ballvalve]

We have used a company called murco gas detection.you could try them and get some advice .the gas detection units are installed in each bedroom and can be bit of a pain for call outs as they can shut a system off from to much hair spray etc.

[install monkey]

http://www.emersonclimate.com/en-US/market_solutions/by_solutions/refrigerant_management_tools/Pages/refrigerant_leak_detection_system.aspx
dont know the cost - or if theyre any good

[Magoo]

Hi Slim.
best to tag that section out of contract and refer to a consulting engineer, advise client accordingly, as if you get it wrong you will loose your shirt and some. Just supply and install as specified by others.

[hookster]

Hi
I would look at a TQ leak sampling very simple to install as you are only running a sample airline (6mm).
They do a 16 point unit which would suit you ideally.

http://www.tqplc.com/refrigeration/products/refrigerant-leak-detector,-infrared-gas-sensors,-refrigerant-gas-leak-detection,-gd131,-uk-/29/

[Grizzly]

We are quoting a Mitsubishi R2 VRF for a Hotel (12 rooms) and require leak detection to meet BS EN378.

Any recommendations for this? :confused:

Thanks in advanced.

I am surprised you even need a "Fixed" leak detection system??
As I think RB is implying.

If this is what you mean, then you have not read EN378!


Leak check intervals are stated for charges up to and above 30kg.

Systems with 300kg require fixed leak detection systems.


Check out the attached link.
http://www.refcom.org.uk/downloads/rac6-practical-guidance.pdf
A confused Grizzly!

[hookster]

It is always a grey area when you consider duty of care. Sometime we all just look at the requirements for compliance and service regulations. If a consultant has specified on a tender my advice is just to quote "as per tender" The leak detection may be necessary due to basement rooms etc etc

BS EN378/2000 and EN378/2007 (Final draft) Refrigeration systems and
heat pumps – safety and environmental requirements.

This standard is intended to minimise possible hazards to persons,
property and the environment from refrigeration systems and refrigerants.

[Magoo]

what has happened with chilled/hot water systems, have not noticed any reports of Hotel motel clients drowning in their beds from those AC systems.
But we are conned along with nu-wave technowledgy, yeah right, and all the implications of it not totally understood.

[r.bartlett]

what has happened with chilled/hot water systems, have not noticed any reports of Hotel motel clients drowning in their beds from those AC systems.
But we are conned along with nu-wave technowledgy, yeah right, and all the implications of it not totally understood.

Haven't of any guests being suffocated by refrigerant either...

a 4 pipe system is very inefficient as you need to maintain a 100% cooling and 100% heating capacity at the same time. Although with free cooling that can be reduced if properly designed.

[hookster]

Just to update on EN378

There are guidelines on the maximum volume of refrigerant that could be discharged into a space without the need for a fixed refrigerant sensor, also known as “practical limits”.

These two examples have been taken from BS EN378 part 1 and have been widely used for air conditioning application for hotel bedrooms and small office spaces.

The values are 0.44kg/m³ for R410A, 0.33kg/m³ for R407c.

Above these values a sensor is required.