Data Sheet for Product

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Siem ens Indoor air quality sensors QPA10.., QPA20.. CE1N1961en

Building Technologies 2018-05-01

When laying the cables, remember that electrical interference is greater the longer the

cables run parallel and the smaller the distance between them. On applications with

EMC problems, use shielded cables. For secondary power lines and signal lines, use

twisted-pair cables.

Mounting notes

Inner wall of the room to be ventilated, not in niches, not behind curtains, not above or

near heat sources, and not exposed to direct light from spot lights.

Do not expose the sensor to direct solar radiation.

Seal the end of the conduit at the sensor to prevent false measurements due to drafts

through the conduit.

Mounting instructions are enclosed in the package.

Commissioning notes

The sensor’s functions can be checked 30 minutes after applying power:

· Checking the CO

function:

In well ventilated rooms, the sensor shows the CO

concentration of the outside air.

This is typically 360 ppm (the sensor’s measuring accuracy must be considered).

Also, a basic functional check can be made by exhaling on the sensor. In this case,

remember that the sensor’s rate of response is purposely delayed (time constant t

= 5 min).

· Checking the VOC function:

Touch the sensor with a cotton ball dowsed in alcohol (e.g. gas from a cigarette

lighter, without lighting a flame).

Ventilation should start when the preset switching level of the connected controller is

reached.

After applying power to the types of sensor with display, Init appears for about 6 se-

conds.

Disposal

The device is considered electrical and electronic equipment for disposal in terms

of the applicable European Directive and may not be disposed of as domestic garbage.

· Dispose of the device via the channels provided for this purpose.

· Comply with all local and currently applicable laws and regulations.

Cable routing and

cable selection

Mounting location

Mounting instructions