User guide

Application Guide | Gas detection in refrigeration systems

Installation guideline When it comes to installation of gas detection

there are two approaches:

• Perimeter detection

• Point detection

With perimeter detection, you place sensors all

around the perimeter of the space in question, to

make sure you monitor the whole space.

With point detection, you locate a sensor at a

particular position, where you are concerned

about a leak (e.g. at the compressor).

For gases heavier than air, sensors should be

located close to the ground/lowest point.

For gases lighter than air, sensors should be

mounted high up on the walls, ceiling or near

exhaust, but convenient for maintenance.

If the density is equal to air, the sensors should be

mounted at face level.

In some countries it may be mandatory to

have an UPS (Uninterruptible Power Supply)

connected to the gas detectors to ensure safe

operation during a power failure.

Fig. 8: Relative density refrigerant/air

Relative density

(refrigerant/air)